159 results on '"WALSH, C"'
Search Results
2. Consumer responses to low-salt food products
- Author
-
Walsh, C., primary
- Published
- 2007
- Full Text
- View/download PDF
3. Contributor contact details
- Author
-
Kilcast, David, primary, Angus, Fiona, additional, Angus, F., additional, He, F.J., additional, MacGregor, G.A., additional, Fernstrom, J.D., additional, McCaughey, S., additional, Purdy, J., additional, Armstrong, G., additional, Walsh, C., additional, Bussell, G., additional, Hunt, M., additional, Man, D., additional, Betts, G., additional, Kilcast, D., additional, den Ridder, C., additional, McGregor, R., additional, Desmond, E., additional, Pedro, S., additional, Nunes, M.L., additional, Cauvain, S.P., additional, Ainsworth, P., additional, Plunkett, A., additional, Guinee, T., additional, O’Kennedy, B.T., additional, and Robinson, T., additional
- Published
- 2007
- Full Text
- View/download PDF
4. A passive technique to measure radon progeny surface deposition variations in rooms and chambers
- Author
-
McLaughlin, J.P., primary and Walsh, C., additional
- Published
- 2005
- Full Text
- View/download PDF
5. [45] Suicide substrates for flavoprotein enzymes
- Author
-
Walsh, C., primary, Cromartie, T., additional, Marcotte, P., additional, and Spencer, R., additional
- Published
- 1978
- Full Text
- View/download PDF
6. Comparing carbon agronomic footprint and sequestration in Central American coffee agroforestry systems and assessing trade-offs with economic returns.
- Author
-
Walsh C, Haggar J, Cerretelli S, Van Oijen M, and Cerda B RH
- Subjects
- Costa Rica, Guatemala, Forestry, Carbon analysis, Coffea growth & development, Carbon Sequestration, Carbon Footprint, Agriculture methods
- Abstract
Agricultural systems are both emitters of greenhouse gases and have the potential to sequester carbon, especially agroforestry systems. Coffee agroforestry systems offer a wide range of intensities of use of agricultural inputs and densities and management of shade trees. We assessed the agronomic carbon footprint (up to farm gate) and modelled the carbon sequestration of a range of coffee agroforestry systems across 180 farms in Costa Rica and Guatemala. The agronomic carbon footprint included upstream, direct and indirect processes associated with chemical and organic fertiliser use and energy consumption (excluding processing of cherries). Carbon sequestration was modelled using the CAF2021 model a processed based model of the C, N and water dynamics specifically designed for coffee agroforestry systems. The carbon footprint per kg of coffee cherries was significantly and positively related to the level of nitrogen inputs. Modelled changes in C stocks i.e. carbon sequestration was significantly and positively related to the Leaf Area Index (LAI) of the trees, and the levels of nitrogen inputs. Increasing nitrogen inputs per hectare was positively associated with emission per kg as nitrogen efficiency varied significantly across the sample. The net carbon balance, defined as sequestration minus CO
2 e emissions was also positively related to shade tree LAI but negatively with yield and N application. Carbon positive farms were characterized by shade cover over 60 %, but low yields and low net income. However, farms that were close to carbon neutral had higher yields and higher net income, with shade levels of about 50 % cover, while carbon negative farms which had shade cover averaging 40 %. Nevertheless, farms showed a large variation in performance with all combinations of positive and negative for carbon balance and net income. However, among the farms with a positive net income, those with a positive carbon balance had a significantly lower net income than those that were carbon negative (i.e. net emitters). This confirms the economic trade-off for farmers seeking to maximise these two goals. If farmers are expected to generate positive carbon balances and potentially to offset emissions higher in the supply chain, then they should receive economic support to compensate continued on-farm carbon accumulation., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Conor Walsh reports financial support was provided by Global Challenges Research Fund. Jeremy Haggar reports financial support was provided by Global Challenges Research Fund. Stefania Cerretelli1 reports financial support was provided by Global Challenges Research Fund. Marcel Van Oijen reports financial support was provided by Global Challenges Research Fund. Rolando H. Cerda reports was provided by Global Challenges Research Fund. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2025
- Full Text
- View/download PDF
7. INteractive survivorship program to improve health care REsources [INSPIRE]: A study protocol testing a digital intervention with stepped care telehealth to improve outcomes for adolescent and young adult survivors.
- Author
-
Yi JC, Ballard S, Walsh C, Friedman DN, Ganz PA, Jacobs LA, Partridge AH, Mitchell SA, Leisenring WM, Syrjala KL, and Baker KS
- Subjects
- Adolescent, Adult, Female, Humans, Male, Young Adult, Health Literacy, Neoplasms therapy, Self-Management methods, Social Media, Survivorship, Randomized Controlled Trials as Topic, Cancer Survivors psychology, Mobile Applications, Telemedicine organization & administration
- Abstract
Background: Adolescents and young adults with cancer (AYAs, ages 15-39 at the time of diagnosis) experience significant adverse health and psychosocial outcomes. AYAs live with emotional distress and health care demands that exceed those of their healthy peers but can have difficulty accessing care. Digitally delivered interventions are an attractive option for AYA survivors, a population that routinely utilizes online resources when seeking health information and support., Aim: By improving access to survivorship resources and support and strengthening health literacy and self-management skills, the INteractive Survivorship Program to Improve Health care REsources [INSPIRE] is designed to improve adherence to AYA health care guidelines and reduce cancer-related distress. We describe the protocol for a two-arm randomized controlled trial (RCT) testing the AYA-adapted INSPIRE program., Methods/design: The intervention includes an interactive mobile app, study website, and social media platforms, adding telehealth for those with continued distress, lower survivorship health care literacy, or poor engagement with the digital program at 6 weeks. Participants are randomized to INSPIRE or an active control. In the active control arm, survivors receive access to a study website with links to existing AYA survivor resources followed by delayed access to the INSPIRE program. Participants are not blinded; study staff not providing telehealth are blinded. The primary outcomes are cancer-related distress and health care adherence specific to second cancer and cardiometabolic screenings., Discussion: If effective, the program is positioned for accelerated implementation to improve care for AYA survivors by using a scalable informatics-based administration and largely digital intervention program., Competing Interests: Declaration of competing interest The authors declare no relevant conflicts of interest., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2025
- Full Text
- View/download PDF
8. Suboptimal care factors and stillbirths during the COVID-19 pandemic in Victoria: A state-wide linkage study of stillbirths and Consultative Council on Obstetric and Paediatric Mortality and Morbidity case reviews.
- Author
-
Hui L, Marzan MB, Palmer KR, Walsh C, Begg L, McDonald S, Farrell T, and Umstad M
- Subjects
- Humans, Female, Pregnancy, Victoria epidemiology, Adult, Infant, Newborn, Pandemics, Prenatal Care statistics & numerical data, Pregnancy Outcome epidemiology, Stillbirth epidemiology, COVID-19 epidemiology, SARS-CoV-2
- Abstract
Problem: The COVID-19 pandemic affected perinatal outcomes globally, with some regions reporting an increase in stillbirths., Background: Melbourne, Australia, experienced one of the longest and most stringent pandemic lockdowns., Aim: To compare stillbirth rates for singleton pregnancies > 20 weeks' gestation before and during the pandemic and examine differences in suboptimal care factors., Methods: January 2018 to December 2021 data on singleton births ≥ 20 weeks in Victoria were extracted and linked to stillbirths in the Consultative Council on Obstetric and Paediatric Mortality and Morbidity database. Statistical comparisons of patient characteristics, pregnancy outcomes, and suboptimal care factors were performed between the pre-pandemic period (2018-19) and the pandemic years (2020, 2021)., Results: Among 302,528 singleton births, 2244 stillbirths were recorded. The stillbirth rate was higher in the first pandemic year (0.81 %) compared with pre-pandemic years (0.73 %) and the second pandemic year (0.70 %) (p = 0.04). No stillbirths were directly attributable to maternal COVID-19 infection. The proportion of stillbirths with suboptimal care factors was similar across periods (p > 0.05). 'Barriers to engaging care' increased in frequency as a contributing factor (p < 0.001). 'Organizational factors' were more common in 2020 (p < 0.001), while suboptimal care related to healthcare personnel was less common in 2021 (p < 0.001). Disadvantaged and non-Australian-born women were more likely to experience suboptimal care., Discussion: Significant fluctuations in stillbirth rates were observed during the pandemic, with a temporary rise in 2020. Barriers to accessing care were a notable factor., Conclusion: Embedding woman-centred care to address structural inequities is essential for supporting families and creating a just health system., Competing Interests: Declaration of Competing Interest Authors have no conflict of interest to disclose, (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2025
- Full Text
- View/download PDF
9. Factors Associated With Cocaine Use at 17 and 20 Years Old: A Longitudinal Analysis of a Nationally Representative Cohort.
- Author
-
Brennan MM, Cavallaro M, Mongan D, Doyle A, Millar SR, Zgaga L, Smyth BP, Nixon E, Ivers JH, Galvin B, Walsh C, McCrory C, and McCarthy ND
- Subjects
- Humans, Adolescent, Male, Female, Longitudinal Studies, Ireland epidemiology, Young Adult, Risk Factors, Prevalence, Peer Group, Self Report, Alcohol Drinking epidemiology, Alcohol Drinking trends, Cocaine-Related Disorders epidemiology
- Abstract
Purpose: Despite growing concerns about trends in cocaine use, there is a shortage of longitudinal research that prospectively examines risk and protective factors associated with cocaine initiation and use in general youth populations. This study addresses this gap., Methods: Growing Up in Ireland is a nationally representative cohort. Individual, family, and socio-environmental exposures associated with incident past-year cocaine use at ages 17 (N = 5965) and 20 (n = 4549) were assessed with survey-weighted logistic regression using generalised estimating equations. Prevalent past-year cocaine use at 20 (N = 4679) was analysed using generalised estimating equations complemented by gradient-boosted decision trees and Shapley explanations., Results: 221 (3.7%) self-reported cocaine use at 17 and 1072 (22.9%) at 20. Alcohol use at 14 or younger was associated with eight times the odds of cocaine use at 17 (aOR 8.0, 95% CI 1.7-37.3) and 19 times at 20 (aOR 19.2, 95% CI 8.6-43.2). Peer cannabis use was associated with 7 times the odds of cocaine use at 17 (aOR 7.3, 95% CI 2.9-18.3) and double at 20 (aOR 2.4, 95% CI 1.8-3.2). Growing up in a neighbourhood where substance use was common doubled the odds of cocaine use at 17 (aOR 2.4, 95% CI 1.3-4.4). Shapley explanations revealed individual-specific positive or negative impacts of exposures., Discussion: Cocaine use among 20-year-olds in Ireland is higher than reported internationally, and increases sharply between the ages of 17 and 20, suggesting a need for interventions targeting this age group. However, associations with early adolescent factors suggest that early interventions may also be important., (Copyright © 2024 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2025
- Full Text
- View/download PDF
10. Systematic review of multivariable prognostic models for outcomes at least 30 days after hip fracture finds 18 mortality models but no nonmortality models warranting validation.
- Author
-
Walsh ME, Kristensen PK, Hjelholt TJ, Hurson C, Walsh C, Ferris H, Crozier-Shaw G, Keohane D, Geary E, O'Halloran A, Merriman NA, and Blake C
- Subjects
- Humans, Prognosis, Models, Statistical, Female, Male, Aged, Hip Fractures mortality
- Abstract
Objectives: Prognostic models have the potential to aid clinical decision-making after hip fracture. This systematic review aimed to identify, critically appraise, and summarize multivariable prediction models for mortality or other long-term recovery outcomes occurring at least 30 days after hip fracture., Study Design and Setting: MEDLINE, Embase, Scopus, Web of Science, and CINAHL databases were searched up to May 2023. Studies were included that aimed to develop multivariable models to make predictions for individuals at least 30 days after hip fracture. Risk of bias (ROB) was dual-assessed using the Prediction model Risk Of Bias ASsessment Tool. Study and model details were extracted and summarized., Results: From 5571 records, 80 eligible studies were identified. They predicted mortality in n = 55 studies/81 models and nonmortality outcomes (mobility, function, residence, medical, and surgical complications) in n = 30 studies/45 models. Most (n = 46; 58%) studies were published since 2020. A quarter of studies (n = 19; 24%) reported using 'machine-learning methods', while the remainder used logistic regression (n = 54; 68%) and other statistical methods (n = 11; 14%) to build models. Overall, 15 studies (19%) presented 18 low ROB models, all predicting mortality. Common concerns were sample size, missing data handling, inadequate internal validation, and calibration assessment. Many studies with nonmortality outcomes (n = 11; 37%) had clear data complexities that were not correctly modeled., Conclusion: This review has comprehensively summarized and appraised multivariable prediction models for long-term outcomes after hip fracture. Only 15 studies of 55 predicting mortality were rated as low ROB, warranting further development of their models. All studies predicting nonmortality outcomes were high or unclear ROB. Careful consideration is required for both the methods used and justification for developing further nonmortality prediction models for this clinical population., Competing Interests: Declaration of competing interest M.E.W. reports financial support was provided by Health Research Board. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
11. Long-term colchicine for the prevention of vascular recurrent events in non-cardioembolic stroke (CONVINCE): a randomised controlled trial.
- Author
-
Kelly P, Lemmens R, Weimar C, Walsh C, Purroy F, Barber M, Collins R, Cronin S, Czlonkowska A, Desfontaines P, De Pauw A, Evans NR, Fischer U, Fonseca C, Forbes J, Hill MD, Jatuzis D, Kõrv J, Kraft P, Kruuse C, Lynch C, McCabe D, Mikulik R, Murphy S, Nederkoorn P, O'Donnell M, Sandercock P, Schroeder B, Shim G, Tobin K, Williams DJ, and Price C
- Subjects
- Aged, Female, Humans, Male, Middle Aged, Hospitalization statistics & numerical data, Ischemic Attack, Transient prevention & control, Ischemic Attack, Transient drug therapy, Myocardial Infarction prevention & control, Recurrence, Stroke prevention & control, Treatment Outcome, Colchicine administration & dosage, Colchicine therapeutic use, Ischemic Stroke prevention & control, Secondary Prevention methods
- Abstract
Background: Anti-inflammatory therapy with long-term colchicine prevented vascular recurrence in coronary disease. Unlike coronary disease, which is typically caused by atherosclerosis, ischaemic stroke is caused by diverse mechanisms including atherosclerosis and small vessel disease or is frequently due to an unknown cause. We aimed to investigate the hypothesis that long-term colchicine would reduce recurrent events after ischaemic stroke., Methods: We did a randomised, parallel-group, open-label, blinded endpoint assessed trial comparing long-term colchicine (0·5 mg orally per day) plus guideline-based usual care with usual care only. Hospital-based patients with non-severe, non-cardioembolic ischaemic stroke or high-risk transient ischaemic attack were eligible. The primary endpoint was a composite of first fatal or non-fatal recurrent ischaemic stroke, myocardial infarction, cardiac arrest, or hospitalisation (defined as an admission to an inpatient unit or a visit to an emergency department that resulted in at least a 24 h stay [or a change in calendar date if the hospital admission or discharge times were not available]) for unstable angina. The p value for significance was 0·048 to adjust for two prespecified interim analyses conducted by the data monitoring committee, for which the steering committee and trial investigators remained blinded. The trial was registered at ClinicalTrials.gov (NCT02898610) and is completed., Findings: 3154 patients were randomly assigned between Dec 19, 2016, and Nov 21, 2022, with the last follow-up on Jan 31, 2024. The trial finished before the anticipated number of outcomes was accrued (367 outcomes planned) due to budget constraints attributable to the COVID-19 pandemic. Ten patients withdrew consent for analysis of their data, leaving 3144 patients in the intention-to-treat analysis: 1569 (colchicine and usual care) and 1575 (usual care alone). A primary endpoint occurred in 338 patients, 153 (9·8%) of 1569 patients allocated to colchicine and usual care and 185 (11·7%) of 1575 patients allocated to usual care alone (incidence rates 3·32 vs 3·92 per 100 person-years, hazard ratio 0·84; 95% CI 0·68-1·05, p=0·12). Although no between-group difference in C-reactive protein (CRP) was observed at baseline, patients treated with colchicine had lower CRP at 28 days and at 1, 2, and 3 years (p<0·05 for all timepoints). The rates of serious adverse events were similar in both groups., Interpretation: Although no statistically significant benefit was observed on the primary intention-to-treat analysis, the findings provide new evidence supporting the rationale for anti-inflammatory therapy in further randomised trials., Funding: Health Research Board Ireland, Deutsche Forschungsgemeinschaft (German Research Foundation), and Fonds Wetenschappelijk Onderzoek Vlaanderen (Research Foundation Flanders), Belgium., Competing Interests: Declaration of interests We declare no competing interests., (Copyright © 2024 Elsevier Ltd. All rights reserved, including those for text and data mining, AI training, and similar technologies.)
- Published
- 2024
- Full Text
- View/download PDF
12. Activated carbon amendment of sand in the base of a permeable pavement reduces total nitrogen and nitrate leaching.
- Author
-
Zan R, Stirling R, Blackburn A, Walsh C, and Werner D
- Subjects
- England, Charcoal chemistry, Environmental Monitoring, Nitrogen analysis, Water Pollutants, Chemical analysis, Nitrates analysis, Sand
- Abstract
Urban runoff from impermeable surfaces contains various pollutants. Stormwater samples were collected for one year from car parks on the campus of Newcastle University, located in northeast England, to monitor seasonal variation in stormwater properties and leachate quality following stormwater percolation through pilot-scale, outdoor permeable pavements. The pilot study compared an innovative 'pollution munching' permeable pavement with 2 % activated carbon (AC) amendment in the sand base with a conventional, un-amended sand base permeable pavement. Faecal coliforms were detected in stormwater at an average value of 3.75 ± 0.79 log
10 CFUs per 100 mL. The permeable pavements without and with AC had mean log removal values of 0.81 ± 0.35 and 0.70 ± 0.35 for these faecal bacteria. The absence of genetic markers for human host associated Bacteroides (HF183) in eleven out of twelve stormwater samples showed that the faecal bacteria were mainly from animal sources. 16S rRNA gene sequencing results confirmed the presence of nitrifying bacteria from the genera Nitrosomonas, Nitrobacter, Nitrosococcus, Nitrospira, and Nitrosospira in stormwater. Nitrification and nitrate leaching was more notable for the conventional permeable pavement and may pose a groundwater pollution risk. Two percent AC amendment of the sand base reduced nitrate and total nitrogen leaching significantly compared with the conventional permeable pavement, by 57 ± 15 % and 40 ± 20 %, respectively. The AC amendment also resulted in significantly reduced Cu and DOC leaching, and lesser accumulation of PAHs by passive samplers embedded in the permeable pavement base. Hydraulic tests showed that the AC amended base layer still met the design specifications for permeable pavements, making it a promising proposition for pollution reduction in Sustainable Drainage Systems (SuDS)., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
13. The Effect of Hormonal Treatment on Ovarian Endometriomas: A Systematic Review and Meta-Analysis.
- Author
-
Thiel PS, Donders F, Kobylianskii A, Maheux-Lacroix S, Matelski J, Walsh C, and Murji A
- Subjects
- Female, Humans, Letrozole therapeutic use, Leuprolide therapeutic use, Nandrolone analogs & derivatives, Nandrolone therapeutic use, Ovarian Cysts drug therapy, Ovarian Cysts surgery, Ovarian Diseases drug therapy, Ovarian Diseases surgery, Ovarian Diseases pathology, Treatment Outcome, Endometriosis drug therapy, Endometriosis surgery, Endometriosis pathology
- Abstract
Objective: To evaluate the effect of hormonal suppression of endometriosis on the size of endometriotic ovarian cysts., Data Sources: The authors searched MEDLINE, PubMed, Cochrane Central Register of Controlled Trials, Embase, and ClinicalTrials.gov from January 2012 to December 2022., Methods of Study Selection: We included studies of premenopausal women undergoing hormonal treatment of endometriosis for ≥3 months. The authors excluded studies involving surgical intervention in the follow-up period and those using hormones to prevent endometrioma recurrence after endometriosis surgery. Risk of bias was assessed with the Newcastle-Ottawa Scale and Cochrane Risk of Bias Tool. The protocol was registered in PROSPERO (CRD42022385612)., Tabulation, Integration, and Results: The primary outcome was the mean change in endometrioma volume, expressed as a percentage, from baseline to at least 6 months. Secondary outcomes were the change in volume at 3 months and analyses by class of hormonal therapy. The authors included 16 studies (15 cohort studies, 1 randomized controlled trial) of 888 patients treated with dienogest (7 studies), other progestins (4), combined hormonal contraceptives (2), and other suppressive therapy (3). Globally, the decrease in endometrioma volume became statistically significant at 6 months with a mean reduction of 55% (95% confidence interval, -40 to -71; 18 treatment groups; 730 patients; p <.001; I
2 = 96%). The reduction was the greatest with dienogest and norethindrone acetate plus letrozole, followed by relugolix and leuprolide acetate. The volume reduction was not statistically significant with combined hormonal contraceptives or other progestins. There was high heterogeneity, and studies were at risk of selection bias., Conclusion: Hormonal suppression can substantially reduce endometrioma size, but there is uncertainty in the exact reduction patients may experience., (Copyright © 2024 AAGL. Published by Elsevier Inc. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
14. A Comparison of Relative-Efficacy Estimate(S) Derived From Both Matching-Adjusted Indirect Comparisons and Standard Anchored Indirect Treatment Comparisons: A Review of Matching-Adjusted Indirect Comparisons.
- Author
-
Cassidy O, Harte M, Trela-Larsen L, Walsh C, White A, McCullagh L, and Leahy J
- Subjects
- Humans, Treatment Outcome, Outcome Assessment, Health Care methods
- Abstract
Objectives: We present an empirical comparison of relative-efficacy estimate(s) from matching-adjusted indirect comparisons (MAICs) with estimates from corresponding standard anchored indirect treatment comparisons., Methods: A total of 80 comparisons were identified from 17 publications through a systematic rapid review. A standardized metric that used reported relative treatment efficacy estimates and their associated uncertainty was used to compare the methods across different treatment indications and outcome measures., Results: On aggregate, MAICs presented for connected networks tended to report a more favorable relative-efficacy estimate for the treatment for which individual-level patient data were available relative to the reported indirect treatment comparison estimate., Conclusions: Although we recognize the importance of MAIC and other population adjustment methods in certain situations, we recommend that results from these analyses are interpreted with caution. Researchers and analysts should carefully consider if MAICs are appropriate where presented and whether MAICs would have added value where omitted., (Copyright © 2023. Published by Elsevier Inc.)
- Published
- 2023
- Full Text
- View/download PDF
15. Indications and Outcomes for Planned Cesarean Hysterectomy in Non-Placenta Accreta Spectrum Disorder Patients: A Systematic Review.
- Author
-
Wilkins KA, Rosen A, Papalia N, Matelski J, Walsh C, Hobson SR, Kingdom JC, and Murji A
- Subjects
- Pregnancy, Female, Humans, Retrospective Studies, Risk Factors, Hysterectomy methods, Placenta Accreta surgery, Neoplasms
- Abstract
Objective: Planned hysterectomy at the time of cesarean delivery may be reasonable in cases other than placenta accreta spectrum disorders. Our objective was to synthesize the published literature on the indications and outcomes for planned cesarean hysterectomy., Data Sources: We performed a systematic review of published literature from the following databases from inception (1946) to June 2021: MEDLINE, PubMed, EMBASE, Cochrane CENTRAL, DARE, and clinicaltrials.gov., Study Selection: We included all study designs where subjects underwent planned cesarean delivery with simultaneous hysterectomy. Emergency procedures and those performed for placenta accreta spectrum disorders were excluded., Data Extraction and Synthesis: The primary outcome was surgical indication, though other surgical outcomes were evaluated when data permitted. Quantitative analysis was limited to studies published in 1990 or later. Risk of bias was assessed using an adaptation of the ROBINS-I tool., Conclusion: The most common indication for planned cesarean hysterectomy was malignancy, with cervical cancer being the most frequent. Other indications included permanent contraception, uterine fibroids, menstrual disorders, and chronic pelvic pain. Common complications included bleeding, infection, and ileus. The surgical skill for cesarean hysterectomy continues to be relevant in contemporary obstetrical practice for reproductive malignancy and several benign indications. Although the data indicate relatively safe outcomes, these studies show significant publication bias and, therefore, further systematic study of this procedure is justified., Prospero Registration Number: CRD42021260545, registered June 16, 2021., (Copyright © 2023 The Society of Obstetricians and Gynaecologists of Canada/La Société des obstétriciens et gynécologues du Canada. Published by Elsevier Inc. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
16. Street Doctors Northern Ireland: A mixed-method process and impact evaluation of a youth violence reduction intervention.
- Author
-
Walsh C, Roche E, and Gill K
- Subjects
- Humans, Adolescent, Northern Ireland, Program Evaluation, United Kingdom, Violence prevention & control
- Abstract
Community violence is an enduring challenge that disproportionally affects youth. This is particularly the case in post-conflict settings such as Northern Ireland. Evidence supported youth work interventions are an important yet under-evaluated area of violence prevention efforts. Youth work approaches have demonstrated significant utility in reaching those most at risk of violence related harm and have the potential to save lives. Street Doctors is a UK charity that seeks to empower young people affected by violence with the skills and knowledge to save lives. Despite burgeoning delivery across the United Kingdom, there has been a paucity of robust evaluations undertaken thus far. The present study reports the findings of a process and impact evaluation of Street Doctors during its pilot into Northern Ireland. The brief intervention was a highly acceptable, thus demonstrating its potential to be implemented within the context of routine youth service provision. Despite the favourable attitudes of participants, no effects were found. Practical implications are discussed., (Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
17. Natural spider silk nanofibrils produced by assembling molecules or disassembling fibers.
- Author
-
Perera D, Li L, Walsh C, Silliman J, Xiong Y, Wang Q, and Schniepp HC
- Subjects
- Animals, Biocompatible Materials metabolism, Silk chemistry, Spiders metabolism
- Abstract
Spider silk is biocompatible, biodegradable, and rivals some of the best synthetic materials in terms of strength and toughness. Despite extensive research, comprehensive experimental evidence of the formation and morphology of its internal structure is still limited and controversially discussed. Here, we report the complete mechanical decomposition of natural silk fibers from the golden silk orb-weaver Trichonephila clavipes into ≈10 nm-diameter nanofibrils, the material's apparent fundamental building blocks. Furthermore, we produced nanofibrils of virtually identical morphology by triggering an intrinsic self-assembly mechanism of the silk proteins. Independent physico-chemical fibrillation triggers were revealed, enabling fiber assembly from stored precursors "at-will". This knowledge furthers the understanding of this exceptional material's fundamentals, and ultimately, leads toward the realization of silk-based high-performance materials. STATEMENT OF SIGNIFICANCE: Spider silk is one of the strongest and toughest biomaterials, rivaling the best man-made materials. The origins of these traits are still under debate but are mostly attributed to the material's intriguing hierarchical structure. Here we fully disassembled spider silk into 10 nm-diameter nanofibrils for the first time and showed that nanofibrils of the same appearance can be produced via molecular self-assembly of spider silk proteins under certain conditions. This shows that nanofibrils are the key structural elements in silk and leads toward the production of high-performance future materials inspired by spider silk., Competing Interests: Declaration of Competing Interests The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
18. Environmental DNA clarifies impacts of combined sewer overflows on the bacteriology of an urban river and resulting risks to public health.
- Author
-
Zan R, Blackburn A, Plaimart J, Acharya K, Walsh C, Stirling R, Kilsby CG, and Werner D
- Subjects
- Humans, Escherichia coli, Environmental Monitoring methods, Sewage microbiology, Public Health, Bacteria genetics, Water Microbiology, DNA, Environmental, Bacteriology
- Abstract
There is no reference of microbiological water quality in the European Union's Water Framework Directive, adapted into English law, and consequently microbial water quality is not routinely monitored in English rivers, except for two recently designated bathing water sites. To address this knowledge gap, we developed an innovative monitoring approach for quantitative assessment of combined sewer overflow (CSO) impacts on the bacteriology of receiving rivers. Our approach combines conventional and environmental DNA (eDNA) based methods to generate multiple lines of evidence for assessing risks to public health. We demonstrated this approach by investigating spatiotemporal variation in the bacteriology of the Ouseburn in northeast England for different weather conditions in the summer and early autumn of the year 2021 across eight sampling locations that comprised rural, urban, and recreational land use settings. We characterized pollution source attributes by collecting sewage from treatment works and CSO discharge at the peak of a storm event. CSO discharge was characterized by log
10 values per 100 mL (average ± stdev) of 5.12 ± 0.03 and 4.90 ± 0.03 for faecal coliforms and faecal streptococci, and 6.00 ± 0.11 and 7.78 ± 0.04 for rodA and HF183 genetic markers, for E. coli and human host associated Bacteroides, respectively, indicating about 5 % sewage content. SourceTracker analysis of sequencing data attributed 72-77 % of bacteria in the downstream section of the river during a storm event to CSO discharge sources, versus only 4-6 % to rural upstream sources. Data from sixteen summer sampling events in a public park exceeded various guideline values for recreational water quality. Quantitative microbial risk assessment (QMRA) predicted a median and 95th percentile risk of 0.03 and 0.39, respectively, of contracting a bacterial gastrointestinal disease when wading and splashing around in the Ouseburn. We show clearly why microbial water quality should be monitored where rivers flow through public parks, irrespective of their bathing water designation., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2023
- Full Text
- View/download PDF
19. A Woman in Severe Pain.
- Author
-
Walsh C, Duggan N, Egan DJ, and Wittels KA
- Subjects
- Female, Humans, Pain etiology, Point-of-Care Systems, Aortic Aneurysm, Aortic Dissection
- Abstract
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
- Published
- 2023
- Full Text
- View/download PDF
20. Steps Ahead: Optimising physical activity in adults with cystic fibrosis: A pilot randomised trial using wearable technology, goal setting and text message feedback.
- Author
-
Curran M, Tierney AC, Collins L, Kennedy L, McDonnell C, Jurascheck AJ, Sheikhi A, Walsh C, Button B, Casserly B, and Cahalan R
- Subjects
- Humans, Adult, Feedback, Quality of Life, Pilot Projects, Goals, Exercise, Cystic Fibrosis therapy, Text Messaging, Wearable Electronic Devices
- Abstract
Background: Regular participation in physical activity (PA) is encouraged for people with Cystic Fibrosis (CF). This study aimed to assess the effectiveness of an intervention using wearable technology, goal setting and text message feedback on PA and health outcomes in people with CF., Methods: This was a pilot randomised trial conducted at University Hospital Limerick. Participants were randomly assigned to the intervention (INT) or active comparator (AC). The 12-week intervention consisted of wearable technology (Fitbit Charge 2) which was remotely monitored, and participants set step count goals. Participants were sent a one-way text message once a week over 12 weeks to positively reinforce and encourage PA participation. The AC group received the wearable technology alone. Follow up was assessed at 24 weeks. Outcomes assessed were PA, aerobic capacity, lung function, sleep, quality of life and wellbeing., Results: Step count increased significantly for the INT group over 12 weeks when compared to the AC group (p=0.019). The INT group had a 28% week-to-week percentage change (Weeks 1-12), while the AC group reduced by 1%, p=0.023. Within group changes demonstrated that VO2 peak (ml/kg/min) significantly increased for the INT group at 12 weeks (24.4 ±7.65 to 26.13 ±7.79, p=0.003) but not at 24 weeks (24.45 ±7.05, p=0.776). There were no significant differences observed for VO2 peak (ml/kg/min) for the AC group. There was no significant effect on lung function, sleep, well-being, or quality of life for either group., Conclusions: A personalised PA intervention using wearable technology, goal setting and text message feedback increased PA and aerobic capacity in people with CF. Integration of this intervention into usual care may encourage regular PA participation for people with CF., Competing Interests: Declaration of Competing Interest The authors declares that there is no conflict of interest., (Copyright © 2022. Published by Elsevier B.V.)
- Published
- 2023
- Full Text
- View/download PDF
21. Index atherectomy peripheral vascular interventions performed for claudication are associated with more reinterventions than nonatherectomy interventions.
- Author
-
Kawaji Q, Dun C, Walsh C, Sorber RA, Stonko DP, Abularrage CJ, Black JH 3rd, Perler BA, Makary MA, and Hicks CW
- Subjects
- Aged, Atherectomy adverse effects, Humans, Intermittent Claudication diagnosis, Intermittent Claudication etiology, Intermittent Claudication surgery, Male, Medicare, Retrospective Studies, Risk Factors, Time Factors, Treatment Outcome, United States, Peripheral Arterial Disease diagnosis, Peripheral Arterial Disease etiology, Peripheral Arterial Disease surgery
- Abstract
Objective: Despite limited evidence supporting atherectomy alone over stenting/angioplasty as the index peripheral vascular intervention (PVI), the use of atherectomy has rapidly increased in recent years. We previously identified a wide distribution of atherectomy practice patterns among US physicians. The aim of this study was to investigate the association of index atherectomy with reintervention., Methods: We used 100% Medicare fee-for-service claims to identify all beneficiaries who underwent elective first-time femoropopliteal PVI for claudication between January 1, 2019, and December 31, 2019. Subsequent PVI reinterventions were examined through June 30, 2021. Kaplan-Meier curves were used to compare rates of PVI reinterventions for patients who received index atherectomy versus nonatherectomy procedures. Reintervention rates were also described for physicians by their overall atherectomy use (by quartile). A hierarchical Cox proportional hazard model was used to evaluate patient and physician-level characteristics associated with reinterventions., Results: A total of 15,246 patients underwent an index PVI for claudication in 2019, of which 59.7% were atherectomy. After a median of 603 days (interquartile range, 77-784 days) of follow-up, 41.2% of patients underwent a PVI reintervention, including 48.9% of patients who underwent index atherectomy versus 29.8% of patients who underwent index nonatherectomy (P < .001). Patients treated by high physician users of atherectomy (quartile 4) received more reinterventions than patients treated by standard physician users (quartiles 1-3) (56.8% vs 39.6%; P < .001). After adjustment, patient factors association with PVI reintervention included receipt of index atherectomy (adjusted hazard ratio [aHR], 1.33; 95% confidence interval [CI], 1.21-1.46), Black race (vs White; aHR; 1.18; 95% CI, 1.03-1.34), diabetes (aHR, 1.13; 95% CI, 1.07-1.21), and urban residence (aHR, 1.11; 95% CI, 1.01-1.22). Physician factors associated with reintervention included male sex (aHR, 1.52; 95% CI, 1.12-2.04), high-volume PVI practices (aHR, 1.23; 95% CI, 1.10-1.37), and physicians with a high use of index atherectomy (aHR, 1.49; 95% CI, 1.27-1.74). Vascular surgeons had a lower risk of PVI reintervention than cardiologists (vs vascular; aHR, 1.22; 95% CI, 1.09-1.38), radiologists (aHR, 1.55; 95% CI, 1.31-1.83), and other specialties (aHR, 1.59; 95% CI, 1.20-2.11). The location of services delivered was not associated with reintervention (P > .05)., Conclusions: The use of atherectomy as an index PVI for claudication is associated with higher PVI reintervention rates compared with nonatherectomy procedures. Similarly, high physician users of atherectomy perform more PVI reinterventions than their peers. The appropriateness of using atherectomy for initial treatment of claudication needs critical reevaluation., (Copyright © 2022 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
22. Spatiotemporal variation in urban wastewater pollution impacts on river microbiomes and associated hazards in the Akaki catchment, Addis Ababa, Ethiopia.
- Author
-
Hiruy AM, Mohammed J, Haileselassie MM, Acharya K, Butte G, Haile AT, Walsh C, and Werner D
- Subjects
- Bacteria, Environmental Monitoring, Escherichia coli, Ethiopia, Feces microbiology, Humans, Sewage, Wastewater, Water, Water Microbiology, Water Pollution, Microbiota, Rivers microbiology
- Abstract
In Addis Ababa and its environs, most urban wastewater is discharged into rivers without treatment. This study related urban wastewater characteristics to the prevalence of faecal, antibiotic resistant, and potentially pathogenic bacteria in rivers of the Akaki catchment across six locations, for the dry and wet season. Spatiotemporal variation in bacterial hazards across the catchment was up to 6 log
10 units. Cooccurrence of sewage pollution marker gene HF183 in all river samples testing positive for the Vibrio cholerae marker gene ompW, and high levels of these two genes in untreated wastewater, identified human sewage as the likely source of Vibrio cholerae hazards in the catchment. Levels of the marker genes rodA for E. coli, HF183 for human host associated Bacteroides, ciaB for Arcobacter, and ompW for Vibrio cholerae were all higher in the dry season than in the wet season. Marker gene gyrB for Pseudomonas aeruginosa was not detected in the samples. From the sequencing data, notable bacterial genera in the dry season included wastewater pollution indicators Arcobacter and Aeromonas, whereas soil erosion may explain the greater prominence of Legionella, Vicinamibacter, and Sphingomonas during the wet season. Except for the most upstream location, all faecal coliform (FC) counts exceeded WHO standards of 1000 CFU/100 mL for unrestricted irrigation. Concerningly, 0.6-20% of FC had ESBL producing antimicrobial resistance traits. In conclusion, multiple bacterial hazards were of concern for river water users in the Akaki catchment, and elevated in the dry season, when the river water is being used for irrigation of vegetable fields that supply the markets of Addis Ababa. This reflects inadequate treatment and limited dilution of urban wastewater by the natural river flows during periods of low rainfall., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2022 The Authors. Published by Elsevier B.V. All rights reserved.)- Published
- 2022
- Full Text
- View/download PDF
23. Advancing Patient Safety Science While Not Losing Focus of the Big Picture: Improving Patient Care.
- Author
-
Khalil S and Ascher-Walsh C
- Subjects
- Humans, Patient Care, Patient Safety
- Published
- 2022
- Full Text
- View/download PDF
24. Validity of the DSM-5 tobacco use disorder diagnostics in adults with problematic substance use.
- Author
-
Shmulewitz D, Greenstein E, Stohl M, Fink DS, Roncone S, Walsh C, Aharonovich E, and Hasin DS
- Subjects
- Adult, Craving, Diagnostic and Statistical Manual of Mental Disorders, Humans, Prospective Studies, Substance-Related Disorders, Tobacco Use Disorder diagnosis, Tobacco Use Disorder psychology
- Abstract
Background: DSM-5 tobacco use disorder (TUD) nosology differs from DSM-IV nicotine dependence (ND) by including craving and DSM-IV abuse criteria, a lower threshold (≥ 2 criteria), and severity levels (mild; moderate; severe). We assessed concurrent and prospective validity of the DSM-5 TUD diagnosis and severity and compared validity with DSM-IV ND diagnosis., Methods: The sample included U.S. adults with current problematic substance use and past year cigarette smoking (N = 396). Baseline assessment collected information on DSM-IV ND and DSM-5 TUD criteria, smoking-related variables, and psychopathology. Over the following 90 days, electronic daily assessments queried smoking and cigarette craving. Variables expected to be related to TUD were validators: cigarette consumption, cigarette craving scale, Fagerström Test for Nicotine Dependence, and psychiatric disorders. Regression models estimated the association of each validator with DSM-5 TUD and severity levels, and differential association between DSM-5 TUD and DSM-IV ND diagnoses., Results: DSM-5 TUD and DSM-IV ND were associated with most baseline validators (p-values < 0.05), with significantly stronger associations with DSM-5 TUD for number of days smoked (p = 0.023) and cigarette craving scale (p = 0.007). Baseline DSM-5 TUD and DSM-IV ND predicted smoking and craving on any given day during follow-up, with stronger associations for DSM-5 TUD (association difference [95% CI%]: any smoking, 0.53 [0.27, 0.77]; number of cigarettes smoked, 1.36 [0.89, 1.78]; craving scale, 0.19 [0.09, 0.28]). Validators were associated with TUD severity in a dose-dependent manner., Conclusion: DSM-5 TUD diagnostic measures as operationalized here demonstrated concurrent and prospective validity. Inclusion of new criteria, particularly craving, improved validity and clinical relevance., (Copyright © 2022 Elsevier B.V. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
25. Challenges and opportunities of integrating imaging and mathematical modelling to interrogate biological processes.
- Author
-
Berg M, Holroyd N, Walsh C, West H, Walker-Samuel S, and Shipley R
- Subjects
- Diagnostic Imaging, Humans, Image Processing, Computer-Assisted, Models, Biological, Biological Phenomena, Models, Theoretical
- Abstract
Advances in biological imaging have accelerated our understanding of human physiology in both health and disease. As these advances have developed, the opportunities gained by integrating with cutting-edge mathematical models have become apparent yet remain challenging. Combined imaging-modelling approaches provide unprecedented opportunity to correlate data on tissue architecture and function, across length and time scales, to better understand the mechanisms that underpin fundamental biology and also to inform clinical decisions. Here we discuss the opportunities and challenges of such approaches, providing literature examples across a range of organ systems. Given the breadth of the field we focus on the intersection of continuum modelling and in vivo imaging applied to the vasculature and blood flow, though our rationale and conclusions extend widely. We propose three key research pillars (image acquisition, image processing, mathematical modelling) and present their respective advances as well as future opportunity via better integration. Multidisciplinary efforts that develop imaging and modelling tools concurrently, and share them open-source with the research community, provide exciting opportunity for advancing these fields., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
26. Residential bacteria and fungi identified by high-throughput sequencing and childhood respiratory health.
- Author
-
Cox J, Stone T, Ryan P, Burkle J, Jandarov R, Mendell MJ, Niemeier-Walsh C, and Reponen T
- Subjects
- Bacteria genetics, Child, Dust analysis, Fungi genetics, High-Throughput Nucleotide Sequencing, Humans, Air Pollution, Indoor analysis, Microbiota
- Abstract
The objective of this study was to examine and compare environmental microbiota from dust and children's respiratory health outcomes at ages seven and twelve. At age seven, in-home visits were conducted for children enrolled in the Cincinnati Childhood Allergy and Air Pollution Study (CCAAPS). Floor dust was collected and analyzed for bacterial (16 S rRNA gene) and fungal (internal transcribed spacer region) microbiota. Respiratory outcomes, including physician-diagnosed asthma, wheeze, rhinitis, and aeroallergen sensitivity were assessed by physical examination and caregiver-report at ages seven and twelve. The associations between dust microbiota and respiratory outcomes were evaluated using Permanova, DESeq, and weighted quantile sum (WQS) regression models. Four types of WQS regression models were run to identify mixtures of fungi or bacteria that were associated with the absence or presence of health outcomes. For alpha or beta diversity of fungi and bacteria, no significant associations were found with respiratory health outcomes. DESeq identified specific bacterial and fungal indicator taxa that were higher or lower with the presence of different health outcomes. Most individual indicator fungal species were lower with asthma and wheeze and higher with aeroallergen positivity and rhinitis, whereas bacterial data was less consistent. WQS regression models demonstrated that a combination of species might influence health outcomes. Several heavily weighted species had a strong influence on the models, and therefore, created a microbial community that was associated with the absence or presence of asthma, wheeze, rhinitis, and aeroallergen+. Weights for specific species within WQS regression models supported indicator taxa findings. Health outcomes might be more influenced by the composition of a complex mixture of bacterial and fungal species in the indoor environment than by the absence or presence of individual species. This study demonstrates that WQS is a useful tool in evaluating mixtures in relation to potential health effects., (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
27. Surgical Outcomes in Benign Gynecologic Surgery Patients during the COVID-19 Pandemic (SOCOVID study).
- Author
-
Kho RM, Chang OH, Hare A, Schaffer J, Hamner J, Northington GM, Metcalfe ND, Iglesia CB, Zelivianskaia AS, Hur HC, Seaman S, Mueller MG, Milad M, Ascher-Walsh C, Kossl K, Rardin C, Siddique M, Murphy M, and Heit M
- Subjects
- Adolescent, COVID-19 Testing, Female, Gynecologic Surgical Procedures adverse effects, Humans, Pregnancy, Prospective Studies, Retrospective Studies, SARS-CoV-2, Treatment Outcome, United States epidemiology, COVID-19, Pandemics
- Abstract
Study Objective: To determine the incidence of perioperative coronavirus disease (COVID-19) in women undergoing benign gynecologic surgery and to evaluate perioperative complication rates in patients with active, previous, or no previous severe acute respiratory syndrome coronavirus 2 infection., Design: A multicenter prospective cohort study., Setting: Ten institutions in the United States., Patients: Patients aged >18 years who underwent benign gynecologic surgery from July 1, 2020, to December 31, 2020, were included. All patients were followed up from the time of surgery to 10 weeks postoperatively. Those with intrauterine pregnancy or known gynecologic malignancy were excluded., Interventions: Benign gynecologic surgery., Measurements and Main Results: The primary outcome was the incidence of perioperative COVID-19 infections, which was stratified as (1) previous COVID-19 infection, (2) preoperative COVID-19 infection, and (3) postoperative COVID-19 infection. Secondary outcomes included adverse events and mortality after surgery and predictors for postoperative COVID-19 infection. If surgery was delayed because of the COVID-19 pandemic, the reason for postponement and any subsequent adverse event was recorded. Of 3423 patients included for final analysis, 189 (5.5%) postponed their gynecologic surgery during the pandemic. Forty-three patients (1.3% of total cases) had a history of COVID-19. The majority (182, 96.3%) had no sequelae attributed to surgical postponement. After hospital discharge to 10 weeks postoperatively, 39 patients (1.1%) became infected with severe acute respiratory syndrome coronavirus 2. The mean duration of time between hospital discharge and the follow-up positive COVID-19 test was 22.1 ± 12.3 days (range, 4-50 days). Eleven (31.4% of postoperative COVID-19 infections, 0.3% of total cases) of the newly diagnosed COVID-19 infections occurred within 14 days of hospital discharge. On multivariable logistic regression, living in the Southwest (adjusted odds ratio, 6.8) and single-unit increase in age-adjusted Charlson comorbidity index (adjusted odds ratio, 1.2) increased the odds of postoperative COVID-19 infection. Perioperative complications were not significantly higher in patients with a history of positive COVID-19 than those without a history of COVID-19, although the mean duration of time between previous COVID-19 diagnosis and surgery was 97 days (14 weeks)., Conclusion: In this large multicenter prospective cohort study of benign gynecologic surgeries, only 1.1% of patients developed a postoperative COVID-19 infection, with 0.3% of infection in the immediate 14 days after surgery. The incidence of postoperative complications was not different in those with and without previous COVID-19 infections., (Copyright © 2021 AAGL. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
28. Use of highly-potent cannabis concentrate products: More common in U.S. states with recreational or medical cannabis laws.
- Author
-
Hasin DS, Borodovsky J, Shmulewitz D, Walsh C, Livne O, Struble CA, Aharonovich E, Fink DS, and Budney A
- Subjects
- Adult, Cross-Sectional Studies, Humans, Legislation, Drug, Cannabis, Hallucinogens, Medical Marijuana
- Abstract
Background: Highly-potent cannabis products, e.g., concentrates, entail greater risks of cannabis-related harms than lower-potency products such as plant or flower material. However, little information is available on whether individuals in U.S. states with recreational cannabis laws (RCL) or medical cannabis laws (MCL) are more likely than individuals in U.S. states without cannabis legalization (no-CL) to use highly-potent forms of cannabis., Methods: Cannabis-using adults in a 2017 online survey (N = 4064) provided information on state of residence and past-month cannabis use, including types of products used, categorized as low-potency (smoked or vaped plant cannabis) or high-potency (vaping or dabbing concentrates). Multivariable logistic regression models generated adjusted odds ratios (aOR) and 95% confidence intervals (CI) for use of high-potency cannabis products by state cannabis legalization status (RCL, MCL, no-CL)., Results: Compared to participants in no-CL states, participants in RCL states had greater odds of using high-potency concentrate products (aOR=2.61;CI=1.77-3.86), as did participants in MCL-only states (aOR=1.55;CI=1.21-1.97). When participants in RCL states and MCL states were directly compared, those in RCL states had greater odds of using high-potency concentrate products (aOR=1.69;CI=1.27-2.42)., Discussion: Although the sample was not nationally representative and the cross-sectional data precluded determining the direction of effect, results suggest that use of high-potency cannabis concentrates is more likely among those in RCL states. Clinicians in RCL states should screen cannabis users for harmful patterns of use. Policymakers in states that do not yet have RCL should consider these findings when drafting new cannabis laws, including the specific products permitted and how best to regulate them., (Copyright © 2021 Elsevier B.V. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
29. Correlation of surgical case volume and fellowship training with performance on simulated procedural tasks.
- Author
-
Doneza JA, Palvia V, Lerner VT, Overbey J, Levie M, Brodman M, and Ascher-Walsh C
- Subjects
- Blood Loss, Surgical, Clinical Competence, Computer Simulation, Humans, Virtual Reality, Fellowships and Scholarships, Gynecologic Surgical Procedures statistics & numerical data, Gynecology education, Laparoscopy education, Obstetrics education, Simulation Training
- Abstract
Background: High-volume and fellowship-trained surgeons have superior outcomes. However, in gynecology, a large proportion of cases are performed by low-volume surgeons. Simulation has been shown to be useful in assessing surgical skill and may be a useful tool in hospital credentialing and maintenance of privileges., Objective: To determine the correlation between a surgical case volume and fellowship training with performance on simulated procedural tasks., Study Design: A total of 108 obstetricians and gynecologists with laparoscopic privileges at 2 academic institutions completed a pre-test survey and performed 3 tasks on the LapSim laparoscopic virtual reality simulator. The pre-test survey inquired about the monthly laparoscopic case volume and prior training. Simulations included a basic skills task (peg transfer) followed by a procedural task (salpingectomy) of 2 difficulty levels (low and moderate). Spearman correlation and Wilcoxon tests were used to determine correlations between the survey responses and performance metrics., Results: Participants included 67 generalists (62%) and 41 fellowship-trained specialists (38%). There was an observed weak correlation among surgical volume (more than 6 cases per month), time to completion, and the amount of blood loss when performing the low-difficulty level salpingectomy (r=-0.32, P=.0007 and r=-0.29, P=.002, respectively). The economy of movement (instrument path length) was correlated to high surgical volume (r=-0.35, P=.0002). Compared with generalists, surgeons with fellowship training performed tasks faster (410.8 seconds [interquartile range, 309.7-595.2]) vs 530.2 seconds (interquartile range, 406.2-605.0; P=.0009), more efficiently at 6.1 m (interquartile range, 4.8-7.3) vs 8.1 m (interquartile range, 5.8-10.7; P=.0003), and with less blood loss at 21.7 mL (interquartile range, 11.8-37.7) vs 42.9 mL (interquartile range, 18.1-70.6; P=.002). Regarding the case volume and fellowship background, there was no difference in ovarian diathermy damage. In addition, there was no difference among most performance parameters for the peg transfer task and the moderate-difficulty salpingectomy procedure., Conclusion: Surgical experience obtained through higher case volume and fellowship training correlate with higher performance scores during simulated procedural tasks. In a previous study, we found a similar correlation with simulated basic skills tasks. The current study is a continuation of an ongoing quality initiative to establish a summative assessment of laparoscopic surgical skills using virtual reality simulator for the maintenance of credentials among obstetrical and gynecologic surgeons. Future studies will compare the performance metrics from laparoscopic procedures performed on virtual reality simulator with the performance in the operating room and clinical outcomes., (Copyright © 2021 Elsevier Inc. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
30. Trends over time in adult cannabis use: A review of recent findings.
- Author
-
Hasin D and Walsh C
- Subjects
- Adult, Cannabis, Hallucinogens, Humans, Legislation, Drug, Marijuana Smoking legislation & jurisprudence, Medical Marijuana, Substance-Related Disorders, United States epidemiology, COVID-19, Marijuana Smoking epidemiology
- Abstract
In the United States, policies regarding the medical and nonmedical use of cannabis are changing rapidly. In 2021, a total of 34 US states have legalized cannabis for adult medical use, and 15 of these states have legalized adult non-medical use. These changing policies have raised questions about increasing prevalences of cannabis use, changing perceptions regarding frequent use, and potentially related outcomes such as comorbid psychiatric illness or driving under the influence of cannabis. Research regarding the correlates of any and frequent cannabis use is also developing quickly. This article reviews recent empirical studies concerning (1) adult trends in cannabis use, (2) state cannabis laws and related outcomes, and (3) emerging evidence regarding how the global coronavirus 19 pandemic may impact cannabis use patterns. We summarize recent findings and conclude with suggestions to address unanticipated effects of rapidly changing cannabis laws and policies., Competing Interests: Conflict of interest statement Nothing declared., (Copyright © 2021 Elsevier Ltd. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
31. Epithelioid trophoblastic tumor presenting as a Caesarean scar defect: A case report.
- Author
-
Black KA, Simone K, Hirt-Walsh C, and Sabourin J
- Abstract
Background: Epithelioid trophoblastic tumor is a rare form of gestational trophoblastic neoplasia. We present the first known case of this rare malignancy presenting as a Caesarean scar defect., Case: A patient with 3 prior Caesarean sections presented with vaginal bleeding 2 months following management of retained products of conception. Her hCG was negative. She underwent surgical repair of a Caesarean scar defect, and pathology was consistent with epithelioid trophoblastic tumor., Conclusion: This case highlights the possibility of malignancy presenting to the general gynecologist as a Caesarean scar defect. The diagnosis of gestational trophoblastic neoplasia should always be considered in the differential diagnosis of a patient with postpartum vaginal bleeding. Limited evidence on fertility conserving treatment of epithelioid trophoblastic tumors does not seem favorable., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2021 The Author(s).)
- Published
- 2021
- Full Text
- View/download PDF
32. Radiology reporting of micturating cystourethrograms (MCUGs): What the paediatric urologists want to know.
- Author
-
Walsh C, Wessely K, De Caluwe D, Rahman N, and Farrugia MK
- Subjects
- Child, Cystography, Humans, Infant, Male, Retrospective Studies, Urologists, Radiology, Vesico-Ureteral Reflux diagnostic imaging
- Abstract
Background: Micturating cystourethrograms (MCUGs) are commonly requested to exclude vesicoureteric reflux (VUR) and bladder outlet obstruction (BOO). Useful additional information including timing and bladder volume at the start of reflux, urethral anomalies and post-void drainage can be obtained from the cystograms, but are not routinely reported by radiologists., Objective: The study aim was to retrospectively review MCUG reports against a proposed reporting proforma, and then re-analyse the effect of the proforma on report quality., Study Design: A retrospective analysis of paediatric MCUG reports was undertaken from two patient cohorts. Cohorts A (41 reports) and B (51 reports) comprised reports written before (2011-12) and following (2016-17) distribution of the standardised reporting proforma, respectively. Reports were assessed with respect to the parameters outlined on the standardised MCUG reporting proforma, including presence, grade and timing of VUR amongst others. Findings from both cohorts were compared and statistically analysed (p < 0.05 significant) to establish if the proforma influenced the content of reports., Results: Statistically significant improvements were demonstrated in the reporting of: bladder outline normal/abnormal - reported in 92% after the proforma vs 56% before (p < 0.001); urethra normal/abnormal - 87% vs 68% (p = 0.033); contrast volume instilled - 84% vs 61% (p = 0.011); bladder emptying - 69% vs 17% (p < 0.001). In patients with VUR, reporting of VUR timing - 96% vs 33% (p < 0.001) and VUR grade - 91% vs 40% (p = 0.002) were also significantly improved., Conclusion: Implementation of a standardised MCUG reporting proforma produced substantial improvements in report quality and consistency, with statistically significant improvements noted in six of seven key features., Competing Interests: Conflicts of interest The authors declare that they have no conflict of interest., (Copyright © 2020 Journal of Pediatric Urology Company. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF
33. California oil: Bridging the gaps between local decision-making and state-level climate action.
- Author
-
Partridge T, Barandiaran J, Walsh C, Bakardzhieva K, Bronstein L, and Hernandez M
- Abstract
California has set ambitious climate policies, including economy-wide carbon neutrality by 2045. Yet levels of oil production and consumption remain high in the state. This gap between California's oil politics and its climate ambitions is deepened by decentralized decision-making processes. County officials are tasked with extractive planning decisions that have wide-ranging implications. In this Viewpoint article, we analyze proposals for enhanced extraction at the Cat Canyon oilfield in Santa Barbara County. After two of three proposals were withdrawn in recent months, we highlight how it has been oil industry volatility and public opposition - rather than state regulations - that have brought county development plans into closer alignment with state climate goals. As California pursues a goal of 'managing the decline' of domestic oil production, we identify strategies for bridging such gaps between local decision-making and state-level climate action, including: a comprehensive state-wide ban on new enhanced oil extraction projects; a 2,500 ft buffer zone around extraction sites; and revenue generation schemes that support a just transition. As Covid-19 forces an oil surplus and lowered production, there are opportunities to enact such changes - particularly by redirecting oil industry labor toward the growing problem of well decommissioning., (© 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF
34. Development and evaluation of a novel caregiver-report tool to assess barriers to physical healthcare for people on the autism spectrum.
- Author
-
Walsh C, Lydon S, Hehir A, and O'Connor P
- Abstract
Introduction: People on the autism spectrum often experience poorer health than the general population despite higher engagement with the health services. This suggests a disparity in the accessibility of appropriate healthcare for autistic individuals. To improve access, barriers the autism community experience in healthcare first need to be identified. This paper aimed to: 1) develop and evaluate a caregiver-report tool; 2) identify barriers to physical healthcare for autistic individuals; and 3) identify potential contributing factors., Methods: A previously established taxonomy of barriers to healthcare for autistic individuals informed the development of the tool; this was then distributed to caregivers of autistic adults and children. Exploratory factor analysis (EFA) assessed validity and reliability of the tool. Multiple Regressions were performed to identify predictors of barriers., Results: In total, caregivers of 194 autistic children or adults participated in the study. The EFA produced four factors: 1) patient-level barriers; 2) healthcare provider-level (HCP) barriers; 3) healthcare system-level barriers; and 4) barriers related to managing healthcare. The greatest barriers included difficulties with identifying/reporting symptoms (endorsed by 62.4% of participants); difficulties handling the waiting area (60.3% of participants); and a lack of HCP knowledge regarding autism (52.1% of participants). Autism severity, general adjustment problems, anxiety, age and having unmet needs predicted the frequency and/or severity of barriers., Conclusions: A tool that allows assessment of patient-, HCP-, and system-level barriers to healthcare was developed and evaluated. Patient-level barriers appear to occur frequently and pose substantial challenges. This tool will help identify areas most in need of intervention and support intervention evaluation., Competing Interests: The authors declare they have no conflicts of interest., (© 2020 The Author(s).)
- Published
- 2020
- Full Text
- View/download PDF
35. Human milk oligosaccharides: Shaping the infant gut microbiota and supporting health.
- Author
-
Walsh C, Lane JA, van Sinderen D, and Hickey RM
- Abstract
Human milk oligosaccharides (HMO) are complex sugars which are found in breast milk at significant concentrations and with unique structural diversity. These sugars are the fourth most abundant component of human milk after water, lipids, and lactose and yet provide no direct nutritional value to the infant. Recent research has highlighted that HMOs have various functional roles to play in infant development. These sugars act as prebiotics by promoting growth of beneficial intestinal bacteria thereby generating short-chain fatty acids which are critical for gut health. HMOs also directly modulate host-epithelial immune responses and can selectively reduce binding of pathogenic bacteria and viruses to the gut epithelium preventing the emergence of a disease. This review covers current knowledge related to the functional biology of HMOs and their associated impact on infant gut health., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2020 The Authors.)
- Published
- 2020
- Full Text
- View/download PDF
36. Lacing up: Reflections from returning to run the 2014 Boston marathon.
- Author
-
Walsh C
- Subjects
- Child, Female, Humans, Young Adult, Marathon Running, Running
- Abstract
In this narrative essay, the author, a pediatric medical social worker and young adult cancer researcher, recounts her experience of returning to run the 2014 Boston Marathon. She shares lessons learned about community and coping in the wake of tragedy., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF
37. Randomized, Sham-Controlled Trial of Real-Time Functional Magnetic Resonance Imaging Neurofeedback for Tics in Adolescents With Tourette Syndrome.
- Author
-
Sukhodolsky DG, Walsh C, Koller WN, Eilbott J, Rance M, Fulbright RK, Zhao Z, Bloch MH, King R, Leckman JF, Scheinost D, Pittman B, and Hampson M
- Subjects
- Adolescent, Cross-Over Studies, Humans, Magnetic Resonance Imaging, Severity of Illness Index, Neurofeedback, Tics therapy, Tourette Syndrome diagnostic imaging, Tourette Syndrome therapy
- Abstract
Background: Activity in the supplementary motor area (SMA) has been associated with tics in Tourette syndrome (TS). The aim of this study was to test a novel intervention-real-time functional magnetic resonance imaging neurofeedback from the SMA-for reduction of tics in adolescents with TS., Methods: Twenty-one adolescents with TS were enrolled in a double-blind, randomized, sham-controlled, crossover study involving two sessions of neurofeedback from their SMA. The primary outcome measure of tic severity was the Yale Global Tic Severity Scale administered by an independent evaluator before and after each arm. The secondary outcome was control over the SMA assessed in neuroimaging scans, in which subjects were cued to increase/decrease activity in SMA without receiving feedback., Results: All 21 subjects completed both arms of the study and all assessments. Participants had significantly greater reduction of tics on the Yale Global Tic Severity Scale after real neurofeedback as compared with the sham control (p < .05). Mean Yale Global Tic Severity Scale Total Tic score decreased from 25.2 ± 4.6 at baseline to 19.9 ± 5.7 at end point in the neurofeedback condition and from 24.8 ± 8.1 to 23.3 ± 8.5 in the sham control condition. The 3.8-point difference is clinically meaningful and corresponds to an effect size of 0.59. However, there were no differences in changes on the secondary measure of control over the SMA., Conclusions: This first randomized controlled trial of real-time functional magnetic resonance imaging neurofeedback in adolescents with TS suggests that this neurofeedback intervention may be helpful for improving tic symptoms. However, no effects were found in terms of change in control over the SMA, the hypothesized mechanism of action., (Copyright © 2019 Society of Biological Psychiatry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF
38. Characterization of aerosols over the Great Barrier Reef: The influence of transported continental sources.
- Author
-
Chen Z, Schofield R, Rayner P, Zhang T, Liu C, Vincent C, Fiddes S, Ryan RG, Alroe J, Ristovski ZD, Humphries RS, Keywood MD, Ward J, Paton-Walsh C, Naylor T, and Shu X
- Subjects
- Australia, Meteorology, Models, Theoretical, Weather, Aerosols analysis, Air Pollutants analysis, Coral Reefs, Environmental Monitoring
- Abstract
The rapid environmental changes in Australia prompt a more thorough investigation of the influence of transportation, local emissions, and optical-chemical properties on aerosol production across the region. A month-long intensive measurement campaign was conducted during spring 2016 at Mission Beach, a remote coastal site west of the Great Barrier Reef (GBR) on the north-east coast of Australia. One aerosol pollution episode was investigated in early October. This event was governed by meteorological conditions and characterized by the increase in black carbon (BC) mass concentration (averaged value of 0.35 ± 0.20 μg m
-3 ). Under the influence of the continental transportation, a new layer of nucleation-mode aerosols with an initial size diameter of 20 nm was observed and aerosol number concentrations reached the peak of 6733 cm-3 at a diameter of 29 nm. The averaged aerosol extinction coefficient at the height of 2 km was 150 Mm-1 , with a small depolarized ratio (3.5-5%). Simultaneously, the boundary layer height presented a fall-rise trend in the presence of these enhanced aerosol concentrations and became stable in a later stage of the episode. We did not observe clear boundary layer height diurnal variations from the LiDAR observations or from the Weather Research and Forecasting (WRF) model outputs, except in an earlier stage of the aerosol episode for the former. Although the sea breeze may have been responsible for these particles, on the balance of available data, we suggest that the aerosol properties at the GBR surface during this period are more likely influenced by regional transportation of continental sources, including biomass-burning aerosols., (Copyright © 2019 Elsevier B.V. All rights reserved.)- Published
- 2019
- Full Text
- View/download PDF
39. Palliative Care Transitions From Acute Care to Community-Based Care-A Systematic Review.
- Author
-
Saunders S, Killackey T, Kurahashi A, Walsh C, Wentlandt K, Lovrics E, Scott M, Mahtani R, Bernstein M, Howard M, Tanuseputro P, Goldman R, Zimmermann C, Aslakson RA, and Isenberg SR
- Subjects
- Humans, Community Health Services, Palliative Care, Patient Discharge, Patient Transfer, Transitional Care
- Abstract
Context: Although the literature on transitions from hospital to the community is extensive, little is known about this experience within the context of palliative care (PC)., Objective: We conducted a systematic review to investigate the impact of receiving palliative care in hospital on the transition from hospital to the community., Methods: We systematically searched MEDLINE, Embase, ProQuest, and CINAHL from 1995 until April 10, 2018, and extracted relevant references. Eligible articles were published in English, included adult patients receiving PC as inpatients, and explored transitions from hospital to the community., Results: A total of 1514 studies were identified and eight met inclusion criteria. Studies were published recently (>2012; n = 7, 88%). Specialist PC interventions were delivered by multidisciplinary care teams as part of inpatient PC triggers, discharge planning programs, and transitional care programs. Common outcomes reported with significant findings consisted of length of stay (n = 5), discharge support (n = 5), and hospital readmissions (n = 6) for those who received inpatient PC. Most studies were at high risk of bias., Conclusion: Heterogeneity of study designs, outcomes, findings, and poor methodological quality renders it challenging to draw conclusions regarding PC's impact on the transition from hospital to home. Further research should use standardized outcomes with randomized controlled trial and/or propensity matched cohort designs., (Copyright © 2019 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
40. Optimal Interval of Time from Operative Hysteroscopy to Embryo Transfer in an In Vitro Fertilization Cycle.
- Author
-
Aharon D, Sekhon L, Lee JA, Ascher-Walsh C, and Copperman AB
- Subjects
- Abortion, Spontaneous epidemiology, Abortion, Spontaneous etiology, Adult, Cohort Studies, Female, Humans, Hysteroscopy adverse effects, Hysteroscopy statistics & numerical data, Pregnancy, Pregnancy Outcome epidemiology, Pregnancy Rate, Retrospective Studies, Time Factors, Wound Healing physiology, Embryo Implantation physiology, Embryo Transfer methods, Embryo Transfer statistics & numerical data, Fertilization in Vitro methods, Fertilization in Vitro statistics & numerical data, Hysteroscopy rehabilitation, Time-to-Pregnancy
- Abstract
Study Objective: Data are limited regarding optimal timing between operative hysteroscopy and embryo transfer (ET). This study aimed to assess whether the time interval from operative hysteroscopy to ET affects implantation and clinical pregnancy rates., Design: Retrospective cohort study (Canadian Task Force classification II-2)., Setting: Private academic center., Patients: All patients who had operative hysteroscopy followed by a day 5 ET from 2012 to 2017., Intervention: Interval of time from operative hysteroscopy to ET., Measurements and Main Results: The interval of time from hysteroscopy to ET was calculated, and linear regression analyses were performed to assess the impact on clinical outcome. A subanalysis of patients who underwent subsequent single, euploid, frozen ET(s) was performed. A total of 318 patients were included. Indications for hysteroscopy included polypectomy (n = 205), myomectomy (n = 36), lysis of adhesions (n = 46), septum resection (n = 19), and retained products of conception (n = 12). The mean interval of time from hysteroscopy to ET was 138.4 ± 162.7 days (range, 20-1390). There was no significant difference in mean interval of time between procedure and subsequent ET when comparing patients who achieved and did not achieve implantation. Patients stratified by interval of time from operative hysteroscopy to ET had similar clinical outcomes. The time interval from hysteroscopy had no impact on odds of implantation (odds ratio [OR], 1.001; 95% confidence interval [CI], .999-1.002; p = .49), ongoing pregnancy (OR, 1.001; 95% CI, .999-1.002; p = .42), or early pregnancy loss (OR, .997; 95% CI, .994-1.000; p = .07) (adjusted for oocyte age, recipient age, endometrial thickness, use of preimplantation genetic testing, use of donor egg, fresh vs frozen ET, ET count). Similar results were observed in the subanalysis restricted to euploid single frozen ETs from autologous cycles., Conclusion: The time interval from operative hysteroscopy to subsequent ET does not impact the likelihood of successful clinical outcome. Patients who have undergone operative hysteroscopy do not need to delay fertility treatment., (Copyright © 2018 AAGL. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
41. Genomic and phenotypic delineation of congenital microcephaly.
- Author
-
Shaheen R, Maddirevula S, Ewida N, Alsahli S, Abdel-Salam GMH, Zaki MS, Tala SA, Alhashem A, Softah A, Al-Owain M, Alazami AM, Abadel B, Patel N, Al-Sheddi T, Alomar R, Alobeid E, Ibrahim N, Hashem M, Abdulwahab F, Hamad M, Tabarki B, Alwadei AH, Alhazzani F, Bashiri FA, Kentab A, Şahintürk S, Sherr E, Fregeau B, Sogati S, Alshahwan SAM, Alkhalifi S, Alhumaidi Z, Temtamy S, Aglan M, Otaify G, Girisha KM, Tulbah M, Seidahmed MZ, Salih MA, Abouelhoda M, Momin AA, Saffar MA, Partlow JN, Arold ST, Faqeih E, Walsh C, and Alkuraya FS
- Subjects
- Adult, Child, Child, Preschool, Dwarfism genetics, Female, Genomics methods, Genotype, Humans, Infant, Infant, Newborn, Male, Mutation genetics, Pedigree, Phenotype, Exome Sequencing methods, Microcephaly genetics, Microcephaly physiopathology
- Abstract
Purpose: Congenital microcephaly (CM) is an important birth defect with long term neurological sequelae. We aimed to perform detailed phenotypic and genomic analysis of patients with Mendelian forms of CM., Methods: Clinical phenotyping, targeted or exome sequencing, and autozygome analysis., Results: We describe 150 patients (104 families) with 56 Mendelian forms of CM. Our data show little overlap with the genetic causes of postnatal microcephaly. We also show that a broad definition of primary microcephaly -as an autosomal recessive form of nonsyndromic CM with severe postnatal deceleration of occipitofrontal circumference-is highly sensitive but has a limited specificity. In addition, we expand the overlap between primary microcephaly and microcephalic primordial dwarfism both clinically (short stature in >52% of patients with primary microcephaly) and molecularly (e.g., we report the first instance of CEP135-related microcephalic primordial dwarfism). We expand the allelic and locus heterogeneity of CM by reporting 37 novel likely disease-causing variants in 27 disease genes, confirming the candidacy of ANKLE2, YARS, FRMD4A, and THG1L, and proposing the candidacy of BPTF, MAP1B, CCNH, and PPFIBP1., Conclusion: Our study refines the phenotype of CM, expands its genetics heterogeneity, and informs the workup of children born with this developmental brain defect.
- Published
- 2019
- Full Text
- View/download PDF
42. Whole-exome sequencing reanalysis at 12 months boosts diagnosis and is cost-effective when applied early in Mendelian disorders.
- Author
-
Ewans LJ, Schofield D, Shrestha R, Zhu Y, Gayevskiy V, Ying K, Walsh C, Lee E, Kirk EP, Colley A, Ellaway C, Turner A, Mowat D, Worgan L, Freckmann ML, Lipke M, Sachdev R, Miller D, Field M, Dinger ME, Buckley MF, Cowley MJ, and Roscioli T
- Subjects
- Computational Biology, Cost-Benefit Analysis economics, Female, Genetic Diseases, Inborn diagnosis, Genetic Diseases, Inborn economics, Genetic Testing economics, Humans, Intellectual Disability diagnosis, Intellectual Disability pathology, Male, Phenotype, Exome Sequencing economics, Exome genetics, Genetic Diseases, Inborn genetics, Genetic Testing trends, Intellectual Disability genetics, Exome Sequencing trends
- Abstract
Purpose: Whole-exome sequencing (WES) has revolutionized Mendelian diagnostics, however, there is no consensus on the timing of data review in undiagnosed individuals and only preliminary data on the cost-effectiveness of this technology. We aimed to assess the utility of WES data reanalysis for diagnosis in Mendelian disorders and to analyze the cost-effectiveness of this technology compared with a traditional diagnostic pathway., Methods: WES was applied to a cohort of 54 patients from 37 families with a variety of Mendelian disorders to identify the genetic etiology. Reanalysis was performed after 12 months with an improved WES diagnostic pipeline. A comparison was made between costs of a modeled WES pathway and a traditional diagnostic pathway in a cohort with intellectual disability (ID)., Results: Reanalysis of WES data at 12 months improved diagnostic success from 30 to 41% due to interim publication of disease genes, expanded phenotype data from referrer, and an improved bioinformatics pipeline. Cost analysis on the ID cohort showed average cost savings of US$586 (AU$782) for each additional diagnosis., Conclusion: Early application of WES in Mendelian disorders is cost-effective and reanalysis of an undiagnosed individual at a 12-month time point increases total diagnoses by 11%.
- Published
- 2018
- Full Text
- View/download PDF
43. Ultrasound guided transversus abdominis plane (TAP) block utilization in multimodal pain management after open gynecologic surgery.
- Author
-
Chang H, Rimel BJ, Li AJ, Cass I, Karlan BY, and Walsh C
- Abstract
Transversus abdominis plane (TAP) block is a peripheral nerve block directed at the nerves in the anterior abdominal wall. We sought to determine whether TAP block reduces post-operative narcotic use or length of stay after open gynecologic surgery. Among 98 women who underwent an open hysterectomy between July 2016 - July 2017 by a gynecologic oncologist, 73 (74.5%) received a TAP block. The majority of patients who received a TAP block had a vertical incision (86.3%) while the majority of patients who did not receive TAP block had a transverse incision (64%). More patients in the TAP block group underwent cancer debulking compared to the no TAP block group (65.7% versus 8%). The two groups did not differ in post-operative pain scores on day 1, 2, or 3, cumulative narcotic use by post-operative day 3, length of stay, or ileus. We found TAP block after vertical skin incision results in comparable pain scores, narcotic use, and length of stay compared to patients undergoing transverse incisions without TAP block.
- Published
- 2018
- Full Text
- View/download PDF
44. Comparison of the Memory Foam Pad Versus the Bean Bag with Shoulder Braces in Preventing Patient Displacement during Gynecologic Laparoscopic Surgery.
- Author
-
Farag S, Rosen L, and Ascher-Walsh C
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Cohort Studies, Equipment Design, Female, Humans, Middle Aged, Patient Positioning methods, Pilot Projects, Viscoelastic Substances, Young Adult, Braces adverse effects, Gynecologic Surgical Procedures adverse effects, Gynecologic Surgical Procedures instrumentation, Gynecologic Surgical Procedures methods, Laparoscopy adverse effects, Laparoscopy instrumentation, Laparoscopy methods, Patient Positioning instrumentation, Restraint, Physical adverse effects, Restraint, Physical instrumentation, Restraint, Physical methods, Robotic Surgical Procedures adverse effects, Robotic Surgical Procedures instrumentation, Robotic Surgical Procedures methods, Shoulder
- Abstract
Study Objective: To compare the amount of patient displacement when a memory foam pad is used versus a bean bag with shoulder braces. The secondary aim was to evaluate for postoperative extremity symptoms including pain, numbness, and weakness., Design: A prospective randomized pilot study (Canadian Task Force classification I)., Setting: A single academic institution., Patients: Women ≥18 years of age undergoing laparoscopic or robotic gynecologic surgery., Interventions: Patients were randomized to be positioned on the memory foam pad (group A) or the bean bag with shoulder braces (group B) preoperatively. The patients' positions were measured before and after the procedure, and the displacement was recorded. Patients were followed postoperatively and questioned regarding upper extremity or lower extremity weakness, numbness, and pain. Demographic characteristics were collected using the electronic medical record., Measurements and Main Results: Forty-three patients were included in the study (22 in group A and 21 in group B). The demographic and intraoperative characteristics of the patients were similar in both groups. The patients in group A moved a mean distance of 3.80 ± 3.32 cm, whereas those in group B moved a mean distance of 1.07 ± 1.93 cm (p = .002). A Pearson correlation coefficient did not yield a correlation between patient displacement and age, body mass index, length of surgery, or pathology weight. In group A, 2 patients had lower extremity numbness, and 1 patient had upper extremity numbness. In group B, 1 patient had upper extremity pain, and 1 patient had both upper and lower extremity numbness. These patients had complete resolution of their symptoms within the first 2 weeks postoperatively, with the exception of 1 patient in group A whose lower extremity numbness resolved 3 months postoperatively., Conclusion: Positioning patients on the bean bag with shoulder braces resulted in significantly less displacement during gynecologic laparoscopic surgery when compared with the memory foam pad. All postoperative extremity numbness, weakness, and pain were temporary and resolved completely in our cohort. A larger study would be necessary to determine the true incidence of peripheral nerve injuries because these are rare complications of laparoscopic surgeries., (Published by Elsevier Inc.)
- Published
- 2018
- Full Text
- View/download PDF
45. Predictors of laparoscopic simulation performance among practicing obstetrician gynecologists.
- Author
-
Mathews S, Brodman M, D'Angelo D, Chudnoff S, McGovern P, Kolev T, Bensinger G, Mudiraj S, Nemes A, Feldman D, Kischak P, and Ascher-Walsh C
- Subjects
- Humans, Models, Anatomic, Obstetrics, Time Factors, User-Computer Interface, Clinical Competence, Computer Simulation, Gynecology, Laparoscopy standards, Physicians standards
- Abstract
Background: While simulation training has been established as an effective method for improving laparoscopic surgical performance in surgical residents, few studies have focused on its use for attending surgeons, particularly in obstetrics and gynecology. Surgical simulation may have a role in improving and maintaining proficiency in the operating room for practicing obstetrician gynecologists., Objective: We sought to determine if parameters of performance for validated laparoscopic virtual simulation tasks correlate with surgical volume and characteristics of practicing obstetricians and gynecologists., Study Design: All gynecologists with laparoscopic privileges (n = 347) from 5 academic medical centers in New York City were required to complete a laparoscopic surgery simulation assessment. The physicians took a presimulation survey gathering physician self-reported characteristics and then performed 3 basic skills tasks (enforced peg transfer, lifting/grasping, and cutting) on the LapSim virtual reality laparoscopic simulator (Surgical Science Ltd, Gothenburg, Sweden). The association between simulation outcome scores (time, efficiency, and errors) and self-rated clinical skills measures (self-rated laparoscopic skill score or surgical volume category) were examined with regression models., Results: The average number of laparoscopic procedures per month was a significant predictor of total time on all 3 tasks (P = .001 for peg transfer; P = .041 for lifting and grasping; P < .001 for cutting). Average monthly laparoscopic surgical volume was a significant predictor of 2 efficiency scores in peg transfer, and all 4 efficiency scores in cutting (P = .001 to P = .015). Surgical volume was a significant predictor of errors in lifting/grasping and cutting (P < .001 for both). Self-rated laparoscopic skill level was a significant predictor of total time in all 3 tasks (P < .0001 for peg transfer; P = .009 for lifting and grasping; P < .001 for cutting) and a significant predictor of nearly all efficiency scores and errors scores in all 3 tasks., Conclusion: In addition to total time, there was at least 1 other objective performance measure that significantly correlated with surgical volume for each of the 3 tasks. Higher-volume physicians and those with fellowship training were more confident in their laparoscopic skills. By determining simulation performance as it correlates to active physician practice, further studies may help assess skill and individualize training to maintain skill levels as case volumes fluctuate., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2017
- Full Text
- View/download PDF
46. Disrupted avoidance learning in functional neurological disorder: Implications for harm avoidance theories.
- Author
-
Morris LS, To B, Baek K, Chang-Webb YC, Mitchell S, Strelchuk D, Mikheenko Y, Phillips W, Zandi M, Jenaway A, Walsh C, and Voon V
- Subjects
- Adult, Aged, Amygdala physiopathology, Brain Mapping methods, Fear physiology, Female, Humans, Magnetic Resonance Imaging methods, Male, Middle Aged, Prefrontal Cortex physiopathology, Task Performance and Analysis, Young Adult, Attention physiology, Avoidance Learning physiology, Conditioning, Classical physiology, Conditioning, Operant physiology
- Abstract
Background: Functional neurological disorder (FND) is an elusive disorder characterized by unexplained neurological symptoms alongside aberrant cognitive processing and negative affect, often associated with amygdala reactivity., Methods: We examined the effect of negative conditioning on cognitive function and amygdala reactivity in 25 FND patients and 20 healthy volunteers (HV). Participants were first conditioned to stimuli paired with negative affective or neutral (CS +/CS -) information. During functional MRI, subjects then performed an instrumental associative learning task to avoid monetary losses in the context of the previously conditioned stimuli. We expected that FND patients would be better at learning to avoid losses when faced with negatively conditioned stimuli (increased harm avoidance). Multi-echo resting state fMRI was also collected from the same subjects and a robust denoising method was employed, important for removing motion and physiological artifacts., Results: FND subjects were more sensitive to the negative CS + compared to HV, demonstrated by a reinforcement learning model. Contrary to expectation, FND patients were generally more impaired at learning to avoid losses under both contexts (CS +/CS -), persisting to choose the option that resulted in a negative outcome demonstrated by both behavioural and computational analyses. FND patients showed enhanced amygdala but reduced dorsolateral prefrontal cortex responses when they received negative feedback. Patients also had increased resting state functional connectivity between these two regions., Conclusions: FND patients had impaired instrumental avoidance learning, findings that parallel previous observations of impaired action-outcome binding. FND patients further show enhanced behavioural and neural sensitivity to negative information. However, this did not translate to improved avoidance learning. Put together, our findings do not support the theory of harm avoidance in FND. We highlight a potential mechanism by which negative contexts interfere with adaptive behaviours in this under-explored disorder.
- Published
- 2017
- Full Text
- View/download PDF
47. The effects of acute psychological stress on circulating and stimulated inflammatory markers: A systematic review and meta-analysis.
- Author
-
Marsland AL, Walsh C, Lockwood K, and John-Henderson NA
- Subjects
- Biomarkers blood, Humans, Inflammation blood, Inflammation complications, Inflammation Mediators blood, Stress, Psychological blood, Stress, Psychological complications
- Abstract
Inflammatory reactivity to acute laboratory stress is thought to reflect individual differences in responsivity to environmental stressors and may confer future health risk. To characterize this response, we conducted a meta-analysis of 34 studies that measured circulating inflammatory markers and 15 studies that measured stimulated production of inflammatory markers before and after exposure to laboratory challenge. Results showed significant stress-related increases in circulating interleukin (IL)-1β (d=0.66, p<0.001), IL-6 (d=0.35, p<0.001), IL-10 (d=0.69, p<0.001), and tumor necrosis factor(TNF)-α (d=0.28, p<0.001), but not IL-1ra, IL-2, interferon-γ, or C-reactive protein. There were sufficient data to assess the time course of IL-6, IL-1β, and TNF-α reactivity. IL-6 increased from baseline to measures taken 40-50, 60-75, 90, and 120min following stress, with the largest effect at 90min post-stress (d=0.70, p<0.001). IL-1β increased from baseline to 20-30, 40-50, and 60-70min following stress, with the largest effect between 40 and 50min post-stress (d=0.73, p=0.02). For TNF-α, there was a significant increase from baseline to 31-50min post stress (d=0.44, p=0.01), but not at later times. There was no difference in magnitude of IL-6 reactivity as a function of type of stress (social-evaluative versus other). For stimulated inflammatory markers, results showed stress-related increases in IL-1β when measured 20-120min post-stress (d=1.09, p<0.001), and in IL-4 and interferon-γ when measured 0-10min post stressor (d=-0.42, p<0.001 and d=0.47, p<0.001). These results extend findings from a prior meta-analysis (Steptoe et al., 2007) to show reliable increases in circulating IL-6, IL-1β, IL-10 and TNF-α and stimulated IL-1β, IL-4 and interferon-γ in response to acute stress. It is possible that these responses contribute to associations between exposure to life challenges and vulnerability to inflammatory disease., (Copyright © 2017 Elsevier Inc. All rights reserved.)
- Published
- 2017
- Full Text
- View/download PDF
48. A Multisite Study of Family Functioning Impairment in Pediatric Obsessive-Compulsive Disorder.
- Author
-
Stewart SE, Hu YP, Leung A, Chan E, Hezel DM, Lin SY, Belschner L, Walsh C, Geller DA, and Pauls DL
- Subjects
- Adolescent, Adult, Boston, British Columbia, Child, Female, Humans, Male, Middle Aged, Obsessive-Compulsive Disorder nursing, Obsessive-Compulsive Disorder physiopathology, Parents psychology, Cost of Illness, Family psychology, Obsessive-Compulsive Disorder psychology
- Abstract
Objective: Familial aspects of pediatric obsessive-compulsive disorder (OCD), including accommodation and treatment, have received notable and warranted attention. However, individual perspectives of its repercussions on family functioning, including emotional and occupational parental burden, have not been closely examined. The present study details this topic using a large multicenter sample., Method: Participants included 354 youth affected with OCD and their mothers and fathers ascertained through OCD programs in Boston, Massachusetts (n = 180) and Vancouver, British Columbia (n = 174). The validated OCD Family Functioning Scale and standard OCD measurements were completed. Descriptive, between-site, and cross-perspective comparative analyses were followed by regression model testing to predict family impairment., Results: Family functioning was negatively affected from youth, mother, and father perspectives. Impairment was reportedly more extensive at the time of worst OCD severity and was greater from maternal versus paternal viewpoints. Most frequently affected family tasks and implicated OCD symptoms included morning and bedtime routines and intrusive thoughts. Emotional repercussions in all members included stress and anxiety, followed by frustration or anger in youth and sadness in parents. Nearly half of mothers and one third of fathers reported daily occupational impairment. Compared with youth self-report, parents perceived fewer social and academic effects on their child. Family accommodation most consistently predicted family impairment, especially from parent perspectives. OCD and compulsion severity, contamination and religious obsessions, and comorbidities also predicted various perspectives of family subdomain impairment., Conclusion: This study quantitatively details the pervasive burden that pediatric OCD places on families, as reported from complementary relative perspectives. Further attention to this topic is warranted in clinical and research realms., (Copyright © 2017 American Academy of Child and Adolescent Psychiatry. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
- Full Text
- View/download PDF
49. External fixator immobilization after extensor mechanism reconstruction in total knee arthroplasty.
- Author
-
Canham CD, Walsh C, and Incavo SJ
- Abstract
Extensor mechanism disruption after total knee arthroplasty is a complicated problem that typically requires surgical reconstruction. After extensor mechanism failure, reconstruction is typically indicated to restore active knee extension and provide a stable limb for ambulation. Immobilization of the knee in extension is vital in the initial postoperative period after extensor mechanism reconstruction. We describe a series of 4 patients who underwent extensor mechanism reconstruction followed by external fixator application to maintain the knee extended in the initial postoperative period. Our results have been favorable. However, close follow-up is important to monitor for the development of pin site infections.
- Published
- 2017
- Full Text
- View/download PDF
50. Effect of Having a Usual Source of Care on Health Care Outcomes Among Children With Serious Emotional Disturbance.
- Author
-
Witt WP, Fullerton CA, Chow C, Gokhale M, Naeger S, Walsh C, and Karnell L
- Subjects
- Adolescent, Affective Symptoms epidemiology, Ambulatory Care economics, Child, Child, Preschool, Emergency Service, Hospital economics, Female, Hospitalization economics, Humans, Infant, Male, Medicaid, Multivariate Analysis, Patient Readmission economics, Patient Readmission statistics & numerical data, United States, Ambulatory Care statistics & numerical data, Continuity of Patient Care, Emergency Service, Hospital statistics & numerical data, Health Expenditures, Hospitalization statistics & numerical data, Mental Disorders epidemiology, Quality of Health Care
- Abstract
Objective: To determine the influence of a usual source of care (USC) on health care utilization, expenditures, and quality for Medicaid-insured children and adolescents with a serious emotional disturbance (SED)., Methods: Administrative claims data for 2011-2012 were extracted from the Truven Health MarketScan Multi-State Medicaid Research Database for 286,585 children and adolescents with a primary diagnosis of SED. We used propensity score-adjusted multivariate regressions to determine whether having a USC had a significant effect on utilization and expenditures for high-cost services that are considered potentially avoidable with appropriate outpatient care: physical and behavioral health inpatient admissions, emergency department (ED) visits, and hospital readmissions., Results: Propensity score-adjusted regressions indicated that children with a USC had fewer inpatient admissions related to behavioral health (adjusted odds ratio [AOR] = 0.87; 95% confidence interval [CI], 0.79-0.97) and physical health (AOR = 0.91; 95% CI, 0.89-0.93) and lower expenditures for behavioral health inpatient admissions, physical health ED visits, and readmissions. Having a USC also was associated with a higher likelihood of receiving quality health care for 4 physical health and 2 behavioral health measures., Conclusions: Having a USC improved the health care of Medicaid-insured children and adolescents with an SED. However, despite having insurance, approximately one-fourth of this patient population did not appear to have a USC. This information can be used in developing programs that encourage connections with comprehensive health care that provides coordination among various providers., (Copyright © 2016 Academic Pediatric Association. Published by Elsevier Inc. All rights reserved.)
- Published
- 2017
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.