47 results on '"Renner R"'
Search Results
2. NOVO ENSINO MÉDIO: TRÊS ASPECTOS AOS QUAIS DEVEMOS NOS ATENTAR
- Author
-
RENNER, R. S., primary, OLIVEIRA, J. F. B., additional, SILVA, T. P., additional, and OLIVEIRA, S. J., additional
- Published
- 2022
- Full Text
- View/download PDF
3. Susceptibility of Candida albicans, Staphylococcus aureus and Escherichia coli to Extracts of Mango (Magnifera indica)
- Author
-
Renner R. Nrior, Chukwuemeka J. Ugboma, Queen Lugbe, and David N. Ogbonna
- Subjects
General Medicine - Abstract
Aim: This study was carried out to investigate the Susceptibility of Candida albicans, Staphylococcus aureus and Escherichia coli to extracts from young and mature mango (Magnifera indica) leaves and stem-bark of the same plant. Study Design: The study employed statistical analysis of the data and interpretation. Place and Duration of Study: Young and mature mango leaves and stem-barks were collected from the Botanical Garden, Kenule Beeson Saro-Wiwa Polytechnic, Bori, Nigeria, and taken to the laboratory for analyses. Methodology: The samples were dried in an oven at 80oC for 3 days. Thereafter, 50 g of each ground mango leaves and stem-bark (young and mature of the same plant) were soaked separately in 500 ml of water, ethanol (95% v/v), and acetic acid (99.9% v/v) for another 3 days. The soaked materials were filtered through Whatman No. 1 filter paper into sterile beakers and evaporated to dryness in a water-bath at 80oC. The dried extracts obtained were reconstituted with water at concentrations of 100, 75, 50 and 25 mg/ml. Test organisms, Candida albicans, Staphylococcus aureus and Escherichia coli were obtained after proper laboratory screening of isolates from the diagnostic laboratory of the Rivers State University Teaching Hospital, Port Harcourt, Nigeria, for confirmation of identity and storage in universal bottles in a refrigerator. Sensitivity tests were carried out with the agar well diffusion method against the test organisms, using tetracycline as standard control drug (for bacteria) and fluconazole (for Candida), with cultures incubated accordingly. The measured zones of inhibition were compared with the controls and interpreted as resistant, intermediate, or susceptible to mango extracts in accordance with the interpretive guidelines published by the National Committee for Clinical Laboratory Standards (NCCLS). Assays for minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) were also carried out. Results: Results obtained showed that Escherichia coli was completely susceptible to acetic acid young leaf and young bark extracts at 100 mg/ml concentrations. Staphylococcus aureus was susceptible only to Acetic acid young leaf extract at 100 mg/ml. For Candida albicans complete susceptibility was with acetic acid young bark at 100 mg/ml. mature leaf extract (100 mg/ml ), acetic acid young bark extract (100 to 50 mg/ml ), aqueous young bark extract (100 mg/ml) and acetic acid mature Candida albicans was susceptible to acetic acid young and mature bark extract at 100 mg/ml concentration. Minimum inhibitory concentration (MIC) values of acetic acid young leaf extract for all three organisms were 12.5 mg/ml. MIC of ethanolic young leaf extract for E. coli was 12.5 mg/ml whereas that for C. albicans was 50 mg/ml. Minimum bacteriocidal concentration values were same as MIC. Conclusion: E. coli and S.aureus were found to be most susceptible to acetic acid young leaf and stem-bark mango extracts. For C. albicans susceptibility profiles were best with aceti acid young and mature stem-bark extracts. It was also found that mango phytochemicals have broad-spectrum antibacterial activity as well as antifungal properties. The study also reveals that young mango parts contain higher bioactive substances than mature parts. Finally, it was concluded that acetic acid extracts produced the highest antimicrobial effects whereas aqueous extracts produced the least.
- Published
- 2023
4. Antibacterial Properties of Young and Mature Mango Leaves (Mangifera indica) Extract on Some Clinical Isolates
- Author
-
Renner R. Nrior, Queen Lugbe, and David N. Ogbonna
- Subjects
Geography, Planning and Development ,Development - Abstract
Aim: This study was carried out to investigate the antibacterial properties and efficacy of mango (Mangifera indica) leaf extracts on some clinical isolates as test rganisms. Study Design: The study employed statistical analysis of the data and interpretation Place and Duration of Study: Young and mature mango leaves were collected from the Botanical Garden, Kenule Beeson Saro-Wiwa Polytechnic, Bori, Nigeria, and taken to the laboratory for analyses. Methodology: The samples were dried in an oven at 80oC for 3 days. Thereafter, 50 g of each ground mango leaf (young and mature leaves) were soaked separately in 500 ml of water, ethanol (95% v/v), and acetic acid (99.9% v/v) respectively for another 3 days. The soaked materials were filtered through Whatman No. 1 filter paper into sterile beakers and evaporated to dryness in a water bath at 80oC. The dried extracts obtained were reconstituted with water at concentrations of 100, 75, 50, and 25 mg/ml. Test organisms, Escherichia coli, Staphylococcus aureus, Salmonella typhi, Proteus mirabilis, Bacillus cereus, and Pseudomonas aeruginosa were obtained after proper laboratory screening of isolates from the diagnostic laboratory of the Rivers State University Teaching Hospital, Port Harcourt, Nigeria, for confirmation of identity and storage in universal bottles in a refrigerator. Sensitivity tests were carried out with the agar well diffusion method against the test organisms, using tetracycline as the standard control drug, with cultures incubated accordingly. The measured zones of inhibition were compared with the controls and interpreted as resistant, intermediate, or susceptible to mango extracts in accordance with the interpretive guidelines published by the National Committee for Clinical Laboratory Standards (NCCLS). Assay for minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) was also carried out. Results: Results obtained showed that acetic acid young leaf extract at 100mg/ml produced 50 % susceptibility and 50 % intermediate response of test bacterial species. Generally, at 100 mg/ml, acetic acid young leaf extracts yielded 50% susceptibility and 50% intermediate response among both Gram-positive and Gram-negative bacteria. Ethanolic extracts gave 100% intermediate sensitivity of Gram-negative species and 50% each of resistant and intermediate response in Gram-positive forms. Aqueous extracts also produced no susceptibility among the test organisms as there was 100% resistance. Extracts of mature mango leaves of all solvents and at all concentrations used yielded no susceptibility response among the test bacterial species on the NCCLS scale. Minimum inhibitory and bactericidal concentrations were found to range from 25 mg/ml to 50 mg/ml. Additionally, it was observed that the sensitivity of organisms to mango extracts increased with concentration. Conclusion: In conclusion, acetic acid has a better extracting potential than ethanol and water as a solvent for the extraction of mango parts. More so, young mango leaves extracted with acetic acid possess higher broad-spectrum antibacterial properties than the mature mango leaves extracted from the same plant. It is therefore recommended that young mango leaves, extracted with acetic acid, be used for the treatment of microbial infections at concentrations not below 50 mg/ml.
- Published
- 2022
5. Susceptibility of Candida albicans, Staphylococcus aureus and Escherichia coli to Extracts of Mango (Magnifera indica)
- Author
-
Nrior, Renner R., primary, Ugboma, Chukwuemeka J., additional, Lugbe, Queen, additional, and Ogbonna, David N., additional
- Published
- 2023
- Full Text
- View/download PDF
6. Ecotoxicological Evaluatation of Artisanal Effluents on Bacillus, Enterobacter, Amorphotheca, Cladosporium and Penicillium Species in Brackish Water
- Author
-
Deinbo G. Bagshaw, Renner R. Nrior, Janet O. Williams, and Samuel A. Wemedo
- Subjects
Geography, Planning and Development ,Development - Abstract
Aim: To assess the effect of the hydrocarbon discharges from the artisanal refineries on the community structure of microbial mats in an aquatic environment Study Design: The study employs experimental design, statistical analysis of the data and interpretation. Place and Duration of Study: The microbial mats, surface water and sediments samples were collected from four hydrocarbon polluted stations (A, B, C and D) and a control sampling station in Yellow island (Iyalla kiri) in Degema Local Government Area, in Rivers state Nigeria. The samples were immediately transported with ice packs to the Microbiology Laboratory of Rivers State University, Port Harcourt. The study lasted from March 2020 to February 2021, covering both wet and dry seasons. Methodology: Different concentrations of fresh effluent (0, 1.625, 3.25, 6.5, 12.5, 25, 50 and 75%) were prepared in test tubes to final volume of 10ml. Each of the test tubes was inoculated with one milliliter (1ml) of the test organism. Five sets of concentrations were prepared for the five test organisms (Bacillus subtillis MW808817, Enterobacter ludwigiiMW767009, Amorphotheca resinae EU040230, Cladosporium cladosporioides MW793722 and Penicillium chrysogenum MN184857). The organisms were exposed to the pollutant for duration of 0, 4, 8, 12 and 24 hours and plated out using spread plate technique. The cultures were incubated for 24 hours for bacteria and five days for fungi. Median lethal concentration (LC50) was determined using SPSS version 20. Results: The results showed that the percentage logarithm survival of the test organisms decreased with increase in exposure time and concentration. The LC50 of Bacillus subtillis MW808817 was 30.93%, Enterobacter ludwigii MW767009 was 29.74%, Amorphotheca resinae EU040230 was 19.65%,Cladosporium cladosporioides MW793722 was 20.08% and Penicillium chrysogenum MN184857 was 17.77%, (noting; the lower the LC50 the more toxic the pollutant). Conclusion: The effluent discharge was more toxic on Penicillium chrysogenum MN184857 than the other test organisms. Also, the ecotoxicological evaluation of the effluents on the test organisms isolated from the study area showed that LC50 of the effluent was slightly toxic on the microbial population when the results obtained were compared to GESAMP Standard for Toxicity Ranking of Chemicals/Effluents in Marine Environment.
- Published
- 2022
7. Eruptive Xanthome bei Hypertriglyzeridämie
- Author
-
Renner, R., Teuwen, I., Harth, W., Treudler, R., and Simon, J.C.
- Abstract
Zusammenfassung: Eruptive Xanthome sind häufig kutane Symptome einer erhöhten Plasmakonzentration triglyzeridreicher Lipoproteine und können Indikator einer unentdeckten Fettstoffwechselstörung, eines Diabetes mellitus oder einer Pankreatitis sein. Wir berichten über eine 42-jährige Patientin mit akut aufgetretenen disseminierten eruptiven Xanthomen aufgrund einer ausgeprägten Hyperlipidämie sowie dekompensiertem Diabetes mellitus bei akuter Pankreatitis. Nach optimierter Blutzucker- und Fettstoffwechseleinstellung bildeten sich die Hautläsionen wieder zurück. Eruptive Xanthome sollten frühzeitig diagnostiziert werden und zur weiterführenden Differenzialdiagnostik einschließlich der Stoffwechselparameter führen.
- Published
- 2024
- Full Text
- View/download PDF
8. AC power system stability with voltage source converters
- Author
-
Renner, R. H., primary
- Published
- 2023
- Full Text
- View/download PDF
9. Antibacterial Properties of Young and Mature Mango Leaves (Mangifera indica) Extract on Some Clinical Isolates
- Author
-
Ogbonna, David N., primary, Lugbe, Queen, primary, and Nrior, Renner R., primary
- Published
- 2022
- Full Text
- View/download PDF
10. Ecotoxicological Evaluatation of Artisanal Effluents on Bacillus, Enterobacter, Amorphotheca, Cladosporium and Penicillium Species in Brackish Water
- Author
-
Wemedo, Samuel A., primary, Williams, Janet O., primary, Nrior, Renner R., primary, and Bagshaw, Deinbo G., primary
- Published
- 2022
- Full Text
- View/download PDF
11. High dose dopamine agonist treatment and combination of dopamine agonists
- Author
-
Odin, P, Oehlwein, C, Storch, A, Polzer, U, Werner, G, Renner, R, Shing, M, Ludolph, A, and Schüler, P
- Published
- 2024
- Full Text
- View/download PDF
12. Optimising co-design processes in telemedicine innovation-developing a telemedical solution for emergency medical services.
- Author
-
Klager E, Lintschinger JM, Teufel A, Schaden E, Manschein V, Reischmann-Senoner L, Ulbing S, Willschke H, Frimmel C, Renner R, Grill C, and Hafner C
- Subjects
- Humans, Stakeholder Participation, Health Personnel, Austria, Telemedicine, Emergency Medical Services
- Abstract
Background: Stakeholder engagement plays a vital role in driving advancements in product development. This imperative now extends to the healthcare domain, driven by the scarcity of healthcare professionals and the pressing demand for effective solutions. Through the application of design thinking and co-design methodologies, this study endeavours to promote comprehensive stakeholder involvement, creating streamlined processes and adaptable templates geared towards fostering innovative solutions for tele-emergency medicine., Methods: In this study design thinking and co-design methods are developed, adapted, and tested, to create effective tools and demonstrate their application. This is part of a process involving stakeholders and lead users to develop a telemedicine solution for emergency medical services. This research is descriptive in kind, offering a transparent and holistic portrayal of the co-design process. The rural region of Burgenland in Austria was chosen for this study, with the challenges of its weak infrastructure offering valuable insights. The tools were tested in co-design workshops, with the participants continuously observed by the research team., Results: Seventeen healthcare professionals, emergency medical technicians and academics participated in a co-design process to develop a telemedicine solution for emergency medical services. The results section presents practical co-creative healthcare innovation tools and templates that have been shown to facilitate the co-design process., Conclusions: The study developed and applied co-design elements for the creation of a prototype concept for telemedicine in emergency medicine and offers valuable insights for similar projects involving diverse stakeholders. It shows that structured co-design activities help all stakeholders to jointly create solutions that meet the overall needs., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Klager et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2024
- Full Text
- View/download PDF
13. Nurse practitioner medication abortion providers in Canada: results from a national survey.
- Author
-
Stirling-Cameron E, Carson A, Abdulai AF, Martin-Misener R, Renner R, Ennis M, and Norman WV
- Abstract
Background: In 2017, nurse practitioners (NPs) became the first non-physician healthcare providers authorised to independently provide medication abortion (MA) in Canada. We aimed to report on demographic and clinical characteristics of NPs providing mifepristone/misoprostol MA in Canada and to identify context-specific barriers and enablers to NP provision of mifepristone/misoprostol MA in Canada among MA providers and non-providers., Methods: From August 2020 to February 2021, we invited Canadian NPs to complete a national, web-based, bilingual (English/French) survey. The survey was distributed through national and provincial nursing associations and national abortion health professional organisations. We collected demographic and clinical care characteristics and present descriptive statistics and bivariate analyses to compare the experiences of NP providers and non-providers of MA., Results: The 181 respondents represented all Canadian provinces and territories. Sixty-five NPs (36%) had provided MA at the time of the survey and 116 (64%) had not. Nearly half (47%) of respondents worked in rural or remote communities and 81% in primary care clinics. Significant barriers impacting non-providers' abilities to provide MA included limited proximity to a pharmacy that dispensed mifepristone/misoprostol, few experienced abortion providers in their community of practice, poor access to procedural abortion services, policy restrictions in NPs' places of employment, and no access to clinical mentorship. Some 98% of NPs providing MA services had never encountered anti-choice protest activity., Conclusions: NPs appear prepared and able to provide MA, yet barriers remain, particularly for NPs in smaller, lower-resourced communities. Our findings inform the development of supports for NPs in this new practice to improve abortion access in Canada., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY. Published by BMJ.)
- Published
- 2024
- Full Text
- View/download PDF
14. Provision of care to diverse populations: results from the 2019 Canadian Abortion Provider Survey.
- Author
-
Ennis M, Renner R, Olure B, Begun S, Norman WV, and Munro S
- Abstract
Competing Interests: Competing interests: SM and WVN are both supported by grants from the Canadian Institutes of Health Research and as Scholars of the Michael Smith Foundation for Health Research. WVN is a paid consultant to the Ontario Attorney General as an expert witness for a court case relating to abortion stigma and harassment. All other authors declare they have no conflict of interest with respect to this research.
- Published
- 2024
- Full Text
- View/download PDF
15. Comprehensive Risk Analysis of Emergency Medical Response Systems in Serbian Healthcare: Assessing Systemic Vulnerabilities in Disaster Preparedness and Response.
- Author
-
Cvetković VM, Tanasić J, Renner R, Rokvić V, and Beriša H
- Abstract
Background/objectives: Emergency Medical Response Systems (EMRSs) play a vital role in delivering medical aid during natural and man-made disasters. This quantitative research delves into the analysis of risk and effectiveness within Serbia's Emergency Medical Services (EMS), with a special emphasis on how work organization, resource distribution, and preparedness for mass casualty events contribute to overall disaster preparedness., Methods: The study was conducted using a questionnaire consisting of 7 sections and a total of 88 variables, distributed to and collected from 172 healthcare institutions (Public Health Centers and Hospitals). Statistical methods, including Pearson's correlation, multivariate regression analysis, and chi-square tests, were rigorously applied to analyze and interpret the data., Results: The results from the multivariate regression analysis revealed that the organization of working hours ( β = 0.035) and shift work ( β = 0.042) were significant predictors of EMS organization, explaining 1.9% of the variance ( R
2 = 0.019). Furthermore, shift work ( β = -0.045) and working hours ( β = -0.037) accounted for 2.0% of the variance in the number of EMS points performed ( R2 = 0.020). Also, the availability of ambulance vehicles ( β = 0.075) and financial resources ( β = 0.033) explained 4.1% of the variance in mass casualty preparedness ( R2 = 0.041). When it comes to service area coverage, the regression results suggest that none of the predictors were statistically significant. Based on Pearson's correlation results, there is a statistically significant correlation between the EMS organization and several key variables such as the number of EMS doctors ( p = 0.000), emergency medicine specialists ( p = 0.000), etc. Moreover, the Chi-square test results reveal statistically significant correlations between EMS organization and how EMS activities are conducted ( p = 0.001), the number of activity locations ( p = 0.005), and the structure of working hours ( p = 0.001)., Conclusions: Additionally, the results underscore the necessity for increased financial support, standardized protocols, and enhanced intersectoral collaboration to strengthen Serbia's EMRS and improve overall disaster response effectiveness. Based on these findings, a clear roadmap is provided for policymakers, healthcare administrators, and EMS personnel to prioritize strategic interventions and build a robust emergency medical response system.- Published
- 2024
- Full Text
- View/download PDF
16. Expectations of healthcare professionals of community-based telemedicine in emergency medical service.
- Author
-
Klager E, Teufel A, Eitenberger M, Bukowski N, Lintschinger JM, Manschein V, Metelka P, Willschke H, Schaden E, Frimmel C, Renner R, and Hafner C
- Subjects
- Humans, Female, Male, Surveys and Questionnaires, Adult, Middle Aged, Focus Groups, Austria, Attitude of Health Personnel, Telemedicine, Emergency Medical Services, Health Personnel
- Abstract
Background: In times of demographic change and an immense shortage of qualified personnel in emergency medical services, telemedicine could offer more efficient solutions for better care. Given the community-based nature of emergency services, local communities play an important role. This study explored the expectations of healthcare professionals and volunteers for telemedicine tools in prehospital emergency medicine., Methods: This mixed-methods study was conducted in the rural region of Burgenland in Austria with stakeholders of the local emergency medical service in two focus groups (13 participants) and 99 quantitative questionnaires., Results: Combining quantitative and qualitative data, we found that a majority of respondents (almost 80%) already experienced basic telemedicine and consider it valuable. In particular, there is a strong expectation for diagnostic support and inquiries related to potential hospitalization. Findings from two focus groups emphasized the importance of cultivating an improved learning culture, developing a specific mindset, and refining soft skills. The optimal telemedicine solution includes a knowledgeable and experienced tele-emergency physician coupled with user-friendly technology., Conclusion: To be clear about the expectations of stakeholders, it is essential to involve all stakeholders right from the beginning. The solution should prioritize the integration of existing structures and be seamlessly incorporated into an evolving learning culture, while also fostering the necessary mindsets alongside educational aspects., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Klager et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2024
- Full Text
- View/download PDF
17. Local anaesthesia for pain control in surgical abortion before 14 weeks of pregnancy: a systematic review.
- Author
-
Renner R, Ennis M, McKercher A, Henderson JT, and Edelman A
- Abstract
Background: Abortions are common and associated with procedural pain. We aimed to evaluate benefits and harms of local anaesthesia given for pain control during surgical abortion at less than 14 weeks' gestation., Methods: We searched a systematic review on local anaesthesia for pain control for surgical abortion at less than 14 weeks' gestation using uterine aspiration. We searched multiple databases through December 2022. We evaluated study quality using the Cochrane Risk of Bias 2 (RoB2) instrument and assessed the certainty of evidence using GRADE (Grading of Recommendations Assessment, Development and Evaluation). Outcomes included intraoperative pain (with dilation, aspiration or procedure), patient satisfaction and adverse events., Results: Thirteen studies with 1992 participants met the inclusion criteria and the majority were judged as low risk of bias. Intervention protocols were heterogeneous, limiting meta-analysis. A 20 mL 1% lidocaine paracervical block (PCB) reduced pain with dilation compared with sham PCB (mean difference (MD) -37.00, 95% CI -45.64 to -28.36) and aspiration (MD -26.00, 95% CI -33.48 to -18.52; 1 randomised controlled trial (RCT), n=120; high-certainty evidence). A PCB with 14 mL 1% chloroprocaine was associated with a slight reduction in pain during aspiration compared with normal saline PCB injected at two or four sites (MD -1.50, 95% CI -2.45 to -0.55; 1 RCT, n=79; high-certainty evidence). Other RCTs compared a range of local anaesthetic types, PCB techniques and topical anaesthetics. Participants reported moderately high satisfaction with any type of pain control and studies reported few adverse events that were rarely medication-related., Conclusion: RCT evidence supports PCB efficacy but was inconsistent and of low certainty for topical anaesthesia., Competing Interests: Competing interests: RR has been involved with several studies included in this review. These studies did not receive pharmaceutical funding. ME: none. AMK: none. JTH: none. AE has been involved with several studies included in this review. These studies did not receive pharmaceutical funding., (© Author(s) (or their employer(s)) 2024. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2024
- Full Text
- View/download PDF
18. Fundamental Limits for Realizing Quantum Processes in Spacetime.
- Author
-
Vilasini V and Renner R
- Abstract
Understanding the interface between quantum and relativistic theories is crucial for fundamental and practical advances, especially given that key physical concepts such as causality take different forms in these theories. Bell's no-go theorem reveals limits on classical processes, arising from relativistic causality principles. Considering whether similar fundamental limits exist on quantum processes, we derive no-go theorems for quantum experiments realizable in classical background spacetimes. We account for general processes allowed by quantum theory, including those with indefinite causal order (ICO), which have also been the subject of recent experiments. Our first theorem implies that realizations of ICO processes that do not violate relativistic causality must involve the nonlocalization of systems in spacetime. The second theorem shows that for any such realization of an ICO process, there exists a more fine-grained description in terms of a definite and acyclic causal order process. This enables a general reconciliation of quantum and relativistic notions of causality and, in particular, applies to experimental realizations of the quantum switch, a prominent ICO process. By showing what is impossible to achieve in classical spacetimes, these no-go results also offer insights into how causality and information processing may differ in future quantum experiments in relativistic regimes beyond classical spacetimes.
- Published
- 2024
- Full Text
- View/download PDF
19. A retrospective analysis of the need for on-site emergency physician presence and mission characteristics of a rural ground-based emergency medical service.
- Author
-
Lintschinger JM, Laxar D, Kapral L, Ulbing S, Glock T, Behrens S, Frimmel C, Renner R, Klaus DA, Willschke H, and Hafner C
- Subjects
- Retrospective Studies, Humans, Female, Austria, Male, Adult, Middle Aged, Physicians, Aged, Adolescent, Child, Emergency Medical Services organization & administration, Rural Health Services organization & administration
- Abstract
Background: This study aimed to address the challenges faced by rural emergency medical services in Europe, due to an increasing number of missions and limited human resources. The primary objective was to determine the necessity of having an on-site emergency physician (EP), while the secondary objectives included analyzing the characteristics of rural EP missions., Methods: A retrospective study was conducted, examining rural EP missions carried out between January 1st, 2017, and December 2nd, 2021 in Burgenland, Austria. The need for physical presence of an EP was classified based on the National Advisory Committee for Aeronautics (NACA) score into three categories; category A: no need for an EP (NACA 1-3); category B: need for an EP (NACA 1-3 along with additional medical interventions beyond the capabilities of emergency medical technicians); and category C: definite need for an EP (NACA 4-7). Descriptive statistics were used for analysis., Results: Out of 16,971 recorded missions, 15,591 were included in the study. Approximately 32.3% of missions fell into category A, indicating that an EP's physical presence was unnecessary. The diagnoses made by telecommunicators matched those of the EPs in only 52.8% of cases., Conclusion: The study suggests that about a third of EP missions carried out in rural areas might not have a solid medical rationale. This underscores the importance of developing an alternative care approach for these missions. Failing to address this could put additional pressure on already stretched EMS systems, risking their collapse., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
20. NCI Cancer Research Data Commons: Core Standards and Services.
- Author
-
Brady A, Charbonneau A, Grossman RL, Creasy HH, Renner R, Pihl T, Otridge J, Kim E, Barnholtz-Sloan JS, and Kerlavage AR
- Subjects
- Humans, United States, Biomedical Research standards, Databases, Factual, Neoplasms therapy, National Cancer Institute (U.S.)
- Abstract
The NCI Cancer Research Data Commons (CRDC) is a collection of data commons, analysis platforms, and tools that make existing cancer data more findable and accessible by the cancer research community. In practice, the two biggest hurdles to finding and using data for discovery are the wide variety of models and ontologies used to describe data, and the dispersed storage of that data. Here, we outline core CRDC services to aggregate descriptive information from multiple studies for findability via a single interface and to provide a single access method that spans multiple data commons. See related articles by Wang et al., p. 1388, Pot et al., p. 1396, and Kim et al., p. 1404., (©2024 The Authors; Published by the American Association for Cancer Research.)
- Published
- 2024
- Full Text
- View/download PDF
21. Publisher Correction: Reply to: Quantum mechanical rules for observed observers and the consistency of quantum theory.
- Author
-
Del Rio L and Renner R
- Published
- 2024
- Full Text
- View/download PDF
22. Reply to: Quantum mechanical rules for observed observers and the consistency of quantum theory.
- Author
-
Del Rio L and Renner R
- Published
- 2024
- Full Text
- View/download PDF
23. Teaching by texting to promote positive health behaviours in pregnancy: a protocol for a randomised controlled trial of SmartMom.
- Author
-
Janssen P, Lecke S, Renner R, Zhang W, Vedam S, Norman WV, Bayrampour H, Tough S, Murray J, Muhajarine N, and Dennis CL
- Subjects
- Pregnancy, Humans, Infant, Newborn, Female, Canada, Health Behavior, Weight Gain, Randomized Controlled Trials as Topic, Text Messaging, Premature Birth
- Abstract
Introduction: Prenatal education is associated with positive health behaviours, including optimal weight gain, attendance at prenatal care, acceptance of routine screening tests, smoking cessation, decreased alcohol consumption and breast feeding. Adoption of these behaviours has been associated with reduced rates of caesarean birth, preterm birth and low birth weight. Barriers to prenatal class attendance faced by parents in Canada include geography, socioeconomic status, age, education, and, among Indigenous peoples and other equity-deserving groups, stigma. To address the need for easily accessible and reliable information, we created 'SmartMom', Canada's first prenatal education programme delivered by short message service text messaging. SmartMom provides evidence-based information timed to be relevant to each week of pregnancy. The overall goal of SmartMom is to motivate the adoption of positive prenatal health behaviours with the ultimate goal of improving health outcomes among women and their newborns., Methods and Analysis: We will conduct a two-arm single-blinded randomised controlled trial. Blinding of participants to trial intervention will not be possible as they will be aware of receiving the intervention, but data analysts will be blinded. Our primary research questions are to determine if women experiencing uncomplicated pregnancies randomly assigned to receive SmartMom messages versus messages addressing general topics related to pregnancy but without direction for behaviour change, have higher rates of: (1) weight gain within ranges recommended for prepregnancy body mass index and (2) adherence to Canadian guidelines regarding attendance at prenatal care appointments., Ethics and Dissemination: The study has been granted a Certificate of Approval, number H22-00603, by the University of British Columbia Research Ethics Board. To disseminate our findings, we are undertaking both integrated and end-of-grant knowledge translation, which will proactively involve potential end-users and stakeholders at every phase of our project., Trial Registration Number: NCT05793944., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2024
- Full Text
- View/download PDF
24. Feasibility and Acceptability of a Mobile Technology Intervention to Support Postabortion Care After Surgical Abortion (the FACTS Study Phase 3): Mixed Methods Prospective Pilot Study.
- Author
-
Gill R, Ogilvie G, Norman WV, Fitzsimmons B, Maher C, and Renner R
- Abstract
Background: In Canada, 1 in 3 women and people of gestational age undergo an abortion in their lifetime. Despite the liberal legal context, barriers continue to exist for women and people who can become pregnant to access this service., Objective: This study aims to (1) conduct a pilot study to demonstrate the feasibility and acceptability of myPostCare to support follow-up care after a procedural abortion; (2) use the findings to understand whether myPostCare has the potential to improve contraceptive behavior and knowledge, emotional well-being, and sexual health knowledge; and (3) develop a better understanding of how innovative mobile solutions can support integrative health programs in British Columbia with the goal of expanding to other sites across Canada., Methods: People of gestational age (aged 14-45 y) who underwent a procedural abortion were recruited from 2 urban abortion facilities in British Columbia. The participants completed a baseline quantitative survey and were provided access to myPostCare for up to 30 days. A follow-up quantitative survey was sent via email on day 30. Qualitative interviews were conducted to explore user satisfaction and usability of myPostCare. Responses to the survey questions were summarized using descriptive statistics, and the system usability scale (SUS) was scored according to the instructions. A secure analytics platform was implemented to obtain data on the overall use of the website by users. Qualitative analysis was conducted with NVivo using a thematic analysis approach. This study was approved by the Women's and Children's Research Ethics Board., Results: Overall, 62 participants were recruited (average age 30 y); 40% (25/62) of the participants completed the exit surveys, and 24% (6/25) consented to participate in the semistructured interviews; 40 participants had undergone an immediate postabortion intrauterine device (IUD) insertion, and 22 did not have an IUD inserted. Participants were satisfied with myPostCare. The SUS average score was 81.5 (SD 9.7; median 82.5, IQR 77.5-87.5), indicating high usability of the tool. Overall, 88% (22/25) of the participants changed their contraceptive method to an IUD. Web-based analytics demonstrated that there were 61 unique visitors to the site, and the top pages visited were Postprocedure Care, Emotional Well-Being, and Contraception Explorer. The longest time spent on the website was 56 minutes. The overall email open rate was 80%, with a click rate of 36%., Conclusions: This study demonstrates that communities and individuals are important collaborators in developing a mobile innovation that facilitates access to high-quality patient-centered abortion care. Through the cocreation process, a digital platform such as myPostCare highlighted a gap in abortion care in Canada, particularly around follow-up support after a procedural abortion., (©Roopan Gill, Gina Ogilvie, Wendy V Norman, Brian Fitzsimmons, Ciana Maher, Regina Renner. Originally published in JMIR Formative Research (https://formative.jmir.org), 09.01.2024.)
- Published
- 2024
- Full Text
- View/download PDF
25. Generalised Entropy Accumulation.
- Author
-
Metger T, Fawzi O, Sutter D, and Renner R
- Abstract
Consider a sequential process in which each step outputs a system A i and updates a side information register E . We prove that if this process satisfies a natural "non-signalling" condition between past outputs and future side information, the min-entropy of the outputs A 1 , ⋯ , A n conditioned on the side information E at the end of the process can be bounded from below by a sum of von Neumann entropies associated with the individual steps. This is a generalisation of the entropy accumulation theorem (EAT) (Dupuis et al. in Commun Math Phys 379: 867-913, 2020), which deals with a more restrictive model of side information: there, past side information cannot be updated in subsequent rounds, and newly generated side information has to satisfy a Markov condition. Due to its more general model of side-information, our generalised EAT can be applied more easily and to a broader range of cryptographic protocols. As examples, we give the first multi-round security proof for blind randomness expansion and a simplified analysis of the E91 QKD protocol. The proof of our generalised EAT relies on a new variant of Uhlmann's theorem and new chain rules for the Rényi divergence and entropy, which might be of independent interest., Competing Interests: Conflict of interestThe authors have no Conflict of interest to declare., (© The Author(s) 2024.)
- Published
- 2024
- Full Text
- View/download PDF
26. Erratum: "Reaction to the Solution: Lead Exposure following Partial Service Line Replacement".
- Author
-
Renner R
- Published
- 2024
- Full Text
- View/download PDF
27. First and Second-Trimester Surgical Abortion Providers and Services in 2019: Results From the Canadian Abortion Provider Survey.
- Author
-
Renner R, Ennis M, Kean L, Brooks M, Dineley B, Pymar H, Norman WV, and Guilbert E
- Subjects
- Female, Humans, Pregnancy, Canada, Cross-Sectional Studies, Mifepristone, Pregnancy Trimester, Second, Pregnancy Trimester, First, Abortion, Induced methods
- Abstract
Objective: Our objective was to explore the workforce and clinical care of first and second-trimester surgical abortion (FTSA, STSA) providers following the publication of the updated Society of Obstetricians and Gynaecologists of Canada (SOGC) surgical abortion guidelines., Methods: We conducted a national, cross-sectional, online, self-administered survey of physicians who provided abortion care in 2019. This anonymized survey collected participant demographics, types of abortion services, and characteristics of FTSA and STSA clinical care. Through healthcare organizations using a modified Dillman technique, we recruited from July to December 2020. Descriptive statistics were generated by R Statistical Software., Results: We present the data of 222 surgical abortion provider respondents, of whom 219 provided FTSA, 109 STSA, and 106 both. Respondents practiced in every Canadian province and territory. Most were obstetrician-gynaecologists (56.8%) and family physicians (36.0%). The majority of FTSA and STSA respondents were located in urban settings, 64.8% and 79.8%, respectively, and more than 80% practiced in hospitals. More than 1 in 4 respondents reported <5 years' experience with surgical abortion care and 93.2% followed SOGC guidelines. Noted guideline deviations included that prophylactic antibiotic use was not universal, and more than half of respondents used sharp curettage in addition to suction. Fewer than 5% of STSA respondents used mifepristone for cervical preparation., Conclusion: The surgical abortion workforce is multidisciplinary and rejuvenating. Education, training, and practice support, including SOGC guideline implementation, are required to optimize care and to ensure equitable FTSA and STSA access in both rural and urban regions. GESTATIONAL AGE NOTATION: weeks, weeks' gestation, gestational age (GA), e.g., 11
6 weeks., (Copyright © 2023 The Author. Published by ELSEVIER INC. on behalf of 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
28. Quantifying population-level conservation impacts for a perpetual conservation program on private land.
- Author
-
Kemink KM, Pressey RL, Adams VM, Olimb SK, Healey AM, Liu B, Frerichs T, and Renner R
- Subjects
- Animals, Computer Simulation, Montana, Animals, Wild, Wetlands
- Abstract
Area-based targets, such as percentages of regions protected, are popular metrics of success in the protection of nature. While easily quantified, these targets can be uninformative about the effectiveness of conservation interventions and should be complemented by program impact evaluations. However, most impact evaluations have examined the effect of protected areas on deforestation. Studies that have extended these evaluations to more dynamic systems or different outcomes are less common, largely due to data availability. In these cases, simulations might prove to be a valuable tool for gaining an understanding of the potential range of program effect sizes. Here, we employ simulations of wetland drainage to estimate the impact of the United States Fish and Wildlife Service Small Wetlands Acquisition Program (SWAP) across a ten-year period in terms of wetland area, and breeding waterfowl and brood abundance in the Prairie Pothole Region of North Dakota, South Dakota, and Montana. Using our simulation results, we estimate a plausible range of program impact for the SWAP as an avoided loss of between 0.00% and 0.02% of the carrying capacity for broods and breeding waterfowl from 2008-2017. Despite the low programmatic impact that these results suggest, the perpetual nature of SWAP governance provides promising potential for a higher cumulative conservation impact in the long term if future wetland drainage occurs., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Kaylan Kemink reports financial support, administrative support, and article publishing charges were provided by Ducks Unlimited Inc. Robert L. Pressey reports financial support was provided by Australian Research Council. Vanessa M Adams reports financial support was provided by Australian Research Council Future Fellowship., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Published
- 2023
- Full Text
- View/download PDF
29. Mobility range, level of pain and sleep quality of patients with venous leg ulcers.
- Author
-
Siegling M, Renner R, and Erfurt-Berge C
- Subjects
- Humans, Sleep Quality, Ulcer, Pain, Varicose Ulcer therapy, Leg Ulcer therapy
- Abstract
This study aimed to compare mobility range, level of pain and sleep quality in patients with venous leg ulcers to age- and gender-matched controls without ulcers. Twenty patients with venous leg ulceration and 20 matched controls each answered a questionnaire, completed the short-physical performance battery, filled in a subject diary and wore a smartwatch for 1 week. The median daily step counts of the ulcer group (3622 steps/day) and the control group (5133 steps/day) were significantly different (P = .017). Significant correlations between total step count and age, duration of physical outdoor activities and scores in the short-physical performance battery were observed in the ulcer group. The scores in the short-physical performance battery were significantly different in both groups (P = .005), indicating weaker physical performance in the ulcer group. The greatest difference in the self-reported level of pain between the two groups was stated during movement. On average, the ulcer group slept shorter by 1 h 38 min (P = .002) and had 0.7 wake phases per night (P = .019) more than the control group. Assessing mobility in patients with venous leg ulcers can be used to develop preventive and interventional concepts to improve and individualise physical therapies., (© 2023 The Authors. International Wound Journal published by Medicalhelplines.com Inc and John Wiley & Sons Ltd.)
- Published
- 2023
- Full Text
- View/download PDF
30. Security of quantum key distribution from generalised entropy accumulation.
- Author
-
Metger T and Renner R
- Abstract
The goal of quantum key distribution (QKD) is to establish a secure key between two parties connected by an insecure quantum channel. To use a QKD protocol in practice, one has to prove that a finite size key is secure against general attacks: no matter the adversary's attack, they cannot gain useful information about the key. A much simpler task is to prove security against collective attacks, where the adversary is assumed to behave identically and independently in each round. In this work, we provide a formal framework for general QKD protocols and show that for any protocol that can be expressed in this framework, security against general attacks reduces to security against collective attacks, which in turn reduces to a numerical computation. Our proof relies on a recently developed information-theoretic tool called generalised entropy accumulation and can handle generic prepare-and-measure protocols directly without switching to an entanglement-based version., (© 2023. Springer Nature Limited.)
- Published
- 2023
- Full Text
- View/download PDF
31. Safety of an esophageal deviator for atrial fibrillation catheter ablation.
- Author
-
Pereira R, Pisani C, Aiello V, Cestari I, Oyama H, Santos O, Otubo J, Moura D, and Scanavacca M
- Abstract
Background: Esophageal thermal injury is a complication of atrial fibrillation (AF) ablation, and it can be avoided by esophageal deviation during left atrial posterior wall radiofrequency catheter ablation., Objective: This study aimed to evaluate the safety of a nitinol-based mechanical esophageal displacement device (MEDD) and its performance., Methods: This preclinical safety study was conducted on 20 pigs, with 10 undergoing radiofrequency AF ablation using the MEDD and 10 serving as a control group under anticoagulation but without radiofrequency application. Esophageal traumatic injuries were classified from 0 to 4 and were grouped as absent (grade 0), minor (grade 1 or 2), moderate (grade 3), or major risk lesions (grade 4) by anatomopathological study. Grades 1 and 2 were considered acceptable. Fluoroscopy was used to measure displacement., Results: Five (25%) pigs developed traumatic lesions, 4 with grade 1 and 1 with grade 2 (2-mm superficial ulcer). There was no difference in lesion occurrence between the radiofrequency and control groups (30% and 20%, respectively; P = .43). Under rightward displacement, the right edge moved 23.9 (interquartile range [IQR] 21.3-26.3) mm and the left edge moved 16.3 (IQR 13.8-18.4) mm ( P < .001) from baseline. Under leftward displacement, the right edge moved 13.5 (IQR 10.9-15.3) mm and the left edge moved 16.5 (IQR 12.3-18.5) mm ( P = .07). A perforation to the pharyngeal diverticulum occurred in 1 pig, related to an accidental extubation., Conclusion: In pigs, the MEDD demonstrated safety in relation to esophageal tissue, and successful deviation. Esophageal traumatic injuries were acceptable, but improper manipulation led to pharyngeal lesion., (© 2023 Published by Elsevier Inc. on behalf of Heart Rhythm Society.)
- Published
- 2023
- Full Text
- View/download PDF
32. First-Order Individual Gas Sensors as Next Generation Reliable Analytical Instruments.
- Author
-
Potyrailo RA, Scherer B, Cheng B, Nayeri M, Shan S, Crowder J, St-Pierre R, Brewer J, and Ruffalo R
- Abstract
It is conventionally expected that the performance of existing gas sensors may degrade in the field compared to laboratory conditions because (i) a sensor may lose its accuracy in the presence of chemical interferences and (ii) variations of ambient conditions over time may induce sensor-response fluctuations (i.e., drift). Breaking this status quo in poor sensor performance requires understanding the origins of design principles of existing sensors and bringing new principles to sensor designs. Existing gas sensors are single-output (e.g., resistance, electrical current, light intensity, etc.) sensors, also known as zero-order sensors (Karl Booksh and Bruce R. Kowalski, Analytical Chemistry , DOI: 10.1021/ac00087a718). Any zero-order sensor is undesirably affected by variable chemical background and sensor drift that cannot be distinguished from the response to an analyte. To address these limitations, we are developing multivariable gas sensors with independent responses, which are first-order analytical instruments. Here, we demonstrate self-correction against drift in two types of first-order gas sensors that operate in different portions of the electromagnetic spectrum. Our radiofrequency sensors utilize dielectric excitation of semiconducting metal oxide materials on the shoulder of their dielectric relaxation peak and achieve self-correction of the baseline drift by operation at several frequencies. Our photonic sensors utilize nanostructured sensing materials inspired by Morpho butterflies and achieve self-correction of the baseline drift by operation at several wavelengths. These principles of self-correction for drift effects in first-order sensors open opportunities for diverse emerging monitoring applications that cannot afford frequent periodic maintenance that is typical of traditional analytical instruments.
- Published
- 2023
- Full Text
- View/download PDF
33. Intersystem crossing of perylene bisimide neutral, radical anion, and dianion derivatives compared via ultrafast spectroelectrochemistry.
- Author
-
Heitmüller J, Fröhlich R, Renner R, Würthner F, and Brixner T
- Abstract
Perylene bisimides are widely studied due to their various applications. Most research is carried out on neutral molecules but charged species are essential in the context of organic electronics and photovoltaics. In this study, we carry out ultrafast transient absorption spectroelectrochemistry and coherent two-dimensional electronic spectroelectrochemistry on three different neutral perylene bisimide derivatives as well as their singly and doubly reduced species. We compare an unsubstituted, flat parent perylene bisimide with two twisted ones that introduce spin-orbit coupling, leading to enhanced intersystem crossing. The internal conversion from higher excited states to the lowest electronically excited state occurs in the picosecond regime with lifetimes significantly shorter for the charged species compared to the neutral ones. Coherent oscillations of the transients for the flat dianion of parent perylene bisimide indicate the occurrence of Fermi resonance. The corresponding vibrational coupling and the superposition of the participating vibrational modes may lead to an enhanced charge separation and triplet formation.
- Published
- 2023
- Full Text
- View/download PDF
34. Lateral parabrachial FoxP2 neurons regulate respiratory responses to hypercapnia.
- Author
-
Kaur S, Nicole L, Sela Y, Lima J, Thomas R, Bandaru S, and Saper C
- Abstract
Although CGRP neurons in the external lateral parabrachial nucleus (PBel
CGRP neurons) are critical for cortical arousal in response to hypercapnia, activating them has little effect on respiration. However, deletion of all Vglut2 expressing neurons in the PBel region suppresses both the respiratory and arousal response to high CO2. We identified a second population of non-CGRP neurons adjacent to the PBelCGRP group in the central lateral, lateral crescent and Kölliker-Fuse parabrachial subnuclei that are also activated by CO2 and project to the motor and premotor neurons that innvervate respiratory sites in the medulla and spinal cord. We hypothesize that these neurons may in part mediate the respiratory response to CO2 and that they may express the transcription factor, Fork head Box protein 2 (FoxP2), which has recently been found in this region. To test this, we examined the role of the PBFoxP2 neurons in respiration and arousal response to CO2, and found that they show cFos expression in response to CO2 exposure as well as increased intracellular calcium activity during spontaneous sleep-wake and exposure to CO2. We also found that optogenetically photo-activating PBFoxP2 neurons increases respiration and that photo-inhibition using archaerhodopsin T (ArchT) reduced the respiratory response to CO2 stimulation without preventing awakening. Our results indicate that PBFoxP2 neurons play an important role in the respiratory response to CO2 exposure during NREM sleep, and indicate that other pathways that also contribute to the response cannot compensate for the loss of the PBFoxP2 neurons. Our findings suggest that augmentation of the PBFoxP2 response to CO2 in patients with sleep apnea in combination with inhibition of the PBelCGRP neurons may avoid hypoventilation and minimize EEG arousals.- Published
- 2023
- Full Text
- View/download PDF
35. The nonequilibrium cost of accurate information processing.
- Author
-
Chiribella G, Meng F, Renner R, and Yung MH
- Abstract
Accurate information processing is crucial both in technology and in nature. To achieve it, any information processing system needs an initial supply of resources away from thermal equilibrium. Here we establish a fundamental limit on the accuracy achievable with a given amount of nonequilibrium resources. The limit applies to arbitrary information processing tasks and arbitrary information processing systems subject to the laws of quantum mechanics. It is easily computable and is expressed in terms of an entropic quantity, which we name the reverse entropy, associated to a time reversal of the information processing task under consideration. The limit is achievable for all deterministic classical computations and for all their quantum extensions. As an application, we establish the optimal tradeoff between nonequilibrium and accuracy for the fundamental tasks of storing, transmitting, cloning, and erasing information. Our results set a target for the design of new devices approaching the ultimate efficiency limit, and provide a framework for demonstrating thermodynamical advantages of quantum devices over their classical counterparts., (© 2022. The Author(s).)
- Published
- 2022
- Full Text
- View/download PDF
36. A Canadian survey of patients' attitudes toward donation of products of conception for research at the time of their aspiration abortion.
- Author
-
Hazan A, Fitzsimmons B, Albert A, and Renner R
- Subjects
- Attitude, British Columbia, Female, Health Knowledge, Attitudes, Practice, Humans, Pregnancy, Surveys and Questionnaires, Abortion, Induced, Tissue and Organ Procurement
- Abstract
Objective: We explored patients' attitudes toward donating products of conception for research at the time of their aspiration abortion., Study Design: We surveyed patients presenting for first or second trimester aspiration abortion to the abortion service at British Columbia Women's Hospital over a 6-month period in 2018. Questions explored demographics, attitudes toward tissue donation, willingness to donate products of conception for research, and how the option of donating tissue influenced patients' perception of their abortion. We analyzed quantitative data using descriptive statistics and answers to open-ended questions using content analysis., Results: The partially tracked response rate to our survey was n = 35 of 46 (76%). Of 98 respondents included for analysis 77 (79%) were willing to donate their products of conception to research. Most respondents (n = 85, 93%), 49 (54%) of whom had ever been offered to actually donate tissue, reported that tissue donation would either positively change (n = 33, 36%) or not change (n = 52, 57%) how they felt at the time of their abortion. The majority of respondents (n = 25, 60%) who were not invited to donate their products of conception would have liked the opportunity to do so. Content analysis of open-ended responses from those willing to donate identified the categories of helping others, contributing to research and providing meaning beyond the respondents' individual experience., Conclusion: Patients' willingness to donate products of conception to research and their associated positive attitudes provide important support for researchers and clinicians who are involved in research that uses products of conception., Implications: Our data may inform research programs and abortion clinics involved in research using products of conception by better understanding the patient experience of being involved in this type of research., (Copyright © 2022. Published by Elsevier Inc.)
- Published
- 2022
- Full Text
- View/download PDF
37. Provision of first-trimester medication abortion in 2019: Results from the Canadian abortion provider survey.
- Author
-
Ennis M, Renner R, Guilbert E, Norman WV, Pymar H, Kean L, Carson A, Martin-Misener R, and Dunn S
- Subjects
- Canada, Cross-Sectional Studies, Female, Humans, Mifepristone, Pregnancy, Pregnancy Trimester, First, Abortion, Induced methods, Abortion, Spontaneous, Misoprostol therapeutic use
- Abstract
Objective: To explore the Canadian first-trimester medication abortion (MA) workforce and their clinical care following the introduction of mifepristone in 2017, updated national clinical practice guidelines and government approval of nurse practitioners (NPs) as first-trimester MA providers., Study Design: We conducted a national, self-administered, cross-sectional survey of abortion providers in 2019. Our bilingual (French/English) survey collected information on demographics, abortion number, and clinical care characteristics. The true number of abortion providers is unknown thus we cannot calculate a survey response rate. To maximize identification of possibly eligible respondents, we widely distributed the survey between July and December 2020 through health professional organizations, using a modified Dillman technique. We used descriptive statistics to characterize the workforce and clinical practices., Results: Four-hundred-sixty-five clinicians responded, of whom 388 provided first-trimester MA. Physicians (n = 358) and NPs (n = 30) reported providing 13,429 first-trimester MAs in 2019 which represented 27.7% of all reported abortions in the survey. The majority of first-trimester MA respondents were primary care physicians (n = 245, 63.1%), had less than five years' experience (n = 223, 61.3%) and practiced outside of hospitals (n = 228, 66.5%). Forty-three percent (n = 165) practiced rurally, and 44.0% (n = 136) used telemedicine for some abortion care. Ninety-nine percent (n = 350) used a guideline-recommended mifepristone/misoprostol regimen while 14.5% (n = 51) sometimes used methotrexate. Patients most commonly received mifepristone/misoprostol at community pharmacies (median 100.0%; interquartile range 50.0%-100.0%)., Conclusion: Our results suggest that there are many new first-trimester MA providers, an increase in the proportion of MAs since 2012 and a shift to primary care settings. Respondents widely adopted mifepristone., Implications Statement: Our results highlight that, following mifepristone introduction, many new primary care practitioners started providing first-trimester medication abortion throughout Canada, including the first non-physicians. This increased access to abortion particularly in rural and underserved communities. These results could inform future directions in policy, guidelines, and abortion access initiatives., (Copyright © 2022. Published by Elsevier Inc.)
- Published
- 2022
- Full Text
- View/download PDF
38. The problem with "unprotected" sex.
- Author
-
Chan MC, Martin L, and Renner R
- Subjects
- Condoms, Humans, Risk-Taking, HIV Infections, Unsafe Sex
- Published
- 2022
- Full Text
- View/download PDF
39. Second- and Third-Trimester Medical Abortion Providers and Services in 2019: Results From the Canadian Abortion Provider Survey.
- Author
-
Renner R, Ennis M, Guilbert E, Roy G, and Barrett J
- Subjects
- Canada, Cross-Sectional Studies, Female, Humans, Mifepristone therapeutic use, Physicians, Family, Pregnancy, Pregnancy Trimester, Third, Abortion, Induced methods, Misoprostol therapeutic use
- Abstract
Objectives: Mifepristone became available in Canada in 2017. Updated national guidelines recommend its off-label use for second/third-trimester medical abortion (STMA/TTMA) by labour induction. The objective of this study was to explore STMA/TTMA provision in Canada and the role of mifepristone., Methods: We conducted a national, cross-sectional, web-based, self-administered, anonymized survey, available in English and French. The survey was distributed through health professional organizations and recruited physicians who provided abortion care in 2019. We used a modified Dillman technique to maximize participation. The survey included sections on workforce and clinical care, including mifepristone use. We used R statistical software to produce descriptive statistics., Results: Four hundred sixty-five clinicians responded to the survey, of whom 112 reported providing STMA and 63, TTMA, for a total of 115 respondents providing at least 1 of the 2 services. Two-thirds of respondents were general obstetrician-gynaecologists or family physicians and the remainder were maternal-fetal medicine subspecialists. The majority (64.7%) provided STMA/TTMA in an academic hospital, and 59.4% performed fewer than 5 STMAs (maximum 50) and 76.1%, fewer than 5 TTMA (maximum 15) in 2019. Fifty-nine percent of respondents reported having used mifepristone/misoprostol for STMA. Among mifepristone users, 48.6% used it for TTMA. Most required an indication beyond patient request to provide STMA/TTMA (82.1%/95.5%)., Conclusions: STMA/TTMA care is provided by multiple (sub-) specialties, and mifepristone has not yet been universally implemented. Our results will inform knowledge translation activities aimed at facilitating collaboration between STMA/TTMA providers and health policy and service delivery leaders and will further increase mifepristone use for STMA/TTMA in Canada., (Copyright © 2022 The Society of Obstetricians and Gynaecologists of Canada/La Société des obstétriciens et gynécologues du Canada. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
40. Contraceptive counselling in 3 Canadian bariatric surgery clinics: a multicentre qualitative study of the experiences of patients and health care providers.
- Author
-
Dineley B, Munro S, Norman WV, Zevin B, Hong D, Katiraee B, Fitzsimmons B, and Renner R
- Subjects
- Adolescent, Adult, Canada epidemiology, Contraceptive Agents, Counseling methods, Female, Humans, Middle Aged, Pregnancy, Young Adult, Bariatric Surgery, Health Personnel
- Abstract
Background: Evidence suggests an increase in fertility and unintended pregnancy after bariatric surgery; contraceptive counselling, traditionally defined as a discussion of contraception options, is therefore an important facet of surgical planning. Our aim was to investigate patient experiences of contraceptive counselling, the attitudes of health care providers (HCPs) toward contraceptive counselling, and their perceptions of the facilitators and barriers to contraceptive counselling in bariatric surgery clinics., Methods: We conducted a qualitative study using semistructured interviews with patients and HCPs at publicly funded Canadian bariatric surgery clinics from May 2018 to February 2019. We recruited bariatric HCPs from across Canada using snowball sampling, and recruited patient participants from 3 Canadian bariatric surgery programs. Patient participants had to be at risk of pregnancy in the postoperative period, aged 18-45 years old and have completed all preoperative counselling. We included HCPs who delivered care in a publicly funded, hospital-affiliated bariatric surgery clinic in Canada. Team members analyzed transcripts thematically., Results: We completed 27 interviews (patient n = 16, HCP n = 11). Our analysis identified 3 separate themes: missing information in contraception counselling, making assumptions about who would benefit from counselling and strategies for improving contraception counselling. We found patients and HCPs wanted more resources on the safety and efficacy of contraceptive methods., Interpretation: Our study showed a need for structured contraceptive counselling in bariatric surgery clinics. Information resources that support patients and HCPs who provide counselling are needed., Competing Interests: Competing interests: Wendy Norman reports serving as an unpaid expert witness to the Government of Ontario, Office of the Attorney General, outside the submitted work. She was also a member of the board of directors with the Society of Family Planning, during the conduct of the study. Regina Renner reports grants from the Canadian Institutes of Health Research and payment from Merck Canada, outside the submitted work. No other competing interests were declared., (© 2022 CMA Impact Inc. or its licensors.)
- Published
- 2022
- Full Text
- View/download PDF
41. Endoscopic closure of oesophageal perforation after catheter ablation for atrial fibrillation.
- Author
-
Pereira R, Pisani C, Lemes C, Moura E, Sakai P, and Scanavacca M
- Subjects
- Humans, Treatment Outcome, Atrial Fibrillation surgery, Catheter Ablation adverse effects, Esophageal Perforation diagnostic imaging, Esophageal Perforation etiology, Esophageal Perforation surgery
- Published
- 2022
- Full Text
- View/download PDF
42. Substituent-dependent absorption and fluorescence properties of perylene bisimide radical anions and dianions.
- Author
-
Renner R, Stolte M, Heitmüller J, Brixner T, Lambert C, and Würthner F
- Abstract
Perylene-3,4:9,10-bis(dicarboximides) (PBIs) rank among the most important functional dyes and organic semiconductors, but only recently have their radical anions and dianions attracted interest for a variety of applications. Here, we systematically elucidate the functional properties (redox, absorption, and emission) of five PBI anions and dianions bearing different bay-substituents attached to the chromophore core. Cyclic voltammetry measurements reveal the influence of the substituents ranging from electron-withdrawing cyano to electron-donating phenoxy groups on the oxidation and reduction potentials that relate to the HOMO and LUMO levels ranging from -7.07 eV to -6.05 eV and -5.01 eV to -4.05 eV, respectively. Spectroelectrochemical studies reveal a significant number of intense absorption bands in the NIR-spectral range (750-1400 nm) for the radical anions, whereas the dianionic species are characterized by similar spectra to those for the neutral dyes, however being bathochromically shifted and with increased molar extinction coefficients of approximately 100 000 M
-1 cm-1 . The increase of the transition dipole moment is up to 56% and accompanied by an almost cyanine-like red-shifted (by 300 nm) absorption spectrum for the most electron-poor tetracyanotetrachloro PBI. Whilst the outstanding fluorescence properties of the neutral PBIs are lost for the radical anions, an appreciable near-infrared (NIR) fluorescence with a quantum yield of up to 18% is revealed for the dianions by utilizing a custom-built flow-cell spectroelectrochemistry setup. Time-dependent density functional theory calculations help to assign the absorption bands to the respective electronic transitions.- Published
- 2022
- Full Text
- View/download PDF
43. Comorbidity and Therapeutic Approaches in Patients with Necrobiosis Lipoidica.
- Author
-
Erfurt-Berge C, Heusinger V, Reinboldt-Jockenhöfer F, Dissemond J, and Renner R
- Subjects
- Adolescent, Adult, Calcineurin Inhibitors therapeutic use, Cluster Analysis, Comorbidity, Dapsone therapeutic use, Diabetes Mellitus drug therapy, Female, Fumarates therapeutic use, Humans, Male, Necrobiosis Lipoidica drug therapy, Retrospective Studies, Steroids therapeutic use, Thyroid Diseases drug therapy, Young Adult, Diabetes Mellitus epidemiology, Necrobiosis Lipoidica epidemiology, Thyroid Diseases epidemiology
- Abstract
Background: Necrobiosis lipoidica (NL) is a rare granulomatous disorder of unknown aetiology. Randomized controlled studies are not available due to it being an orphan disease., Objectives: We evaluated patients in 2 dermatological centres to cluster data about epidemiology, the therapeutic approaches for NL, and their efficacy., Materials and Methods: Comorbidity and the efficacy of the applied treatment was assessed for 98 patients., Results: We identified 54% of patients with concomitant diabetes and 19% with thyroidal disorders. Topical steroids (85.7%) were predominantly used followed by calcineurin inhibitors (31%) and phototherapy (41.8%). Systemically, fumaric acid esters were more frequently applied (26.8%) than steroids (24.4%) and dapsone (24.4%). Steroids, compression therapy, calcineurin inhibitors, phototherapy, fumaric acid esters, and dapsone showed remarkable efficacy., Conclusion: Therapeutic options were chosen individually in accordance with the severity of NL and presence of ulceration. Topical calcineurin inhibitors, systemic application of fumaric acid esters, and dapsone represent effective alternatives to the use of steroids., (© 2021 S. Karger AG, Basel.)
- Published
- 2022
- Full Text
- View/download PDF
44. Dispensing and practice use patterns, facilitators and barriers for uptake of ulipristal acetate emergency contraception in British Columbia: a mixed-methods study.
- Author
-
Chan MC, Munro S, Schummers L, Albert A, Mackenzie F, Soon JA, Ragsdale P, Fitzsimmons B, and Renner R
- Subjects
- British Columbia epidemiology, Contraceptive Agents, Female pharmacology, Culture, Female, Health Knowledge, Attitudes, Practice, Humans, Practice Patterns, Pharmacists' statistics & numerical data, Practice Patterns, Physicians' statistics & numerical data, Social Stigma, Communication Barriers, Contraception, Postcoital methods, Contraception, Postcoital psychology, Drug Utilization statistics & numerical data, Levonorgestrel pharmacology, Norpregnadienes pharmacology, Patient Preference psychology, Patient Preference statistics & numerical data
- Abstract
Background: Ulipristal acetate 30 mg became available as prescription-only emergency contraception in British Columbia, Canada, in September 2015, as an addition to over-the-counter levonorgestrel emergency contraception. In this study, we determined dispensing and practice use patterns for ulipristal acetate, as well as facilitators of and barriers to emergency contraception for physicians, pharmacists and patients in BC., Methods: In the quantitative component of this mixed-methods study, we examined ulipristal acetate use from September 2015 to December 2018 using a database that captures all outpatient prescription dispensations in BC (PharmaNet) and another capturing market sales numbers for all oral emergency contraception in BC (IQVIA). We analyzed the quantitative data descriptively. We conducted semistructured interviews from August to November 2019, exploring barriers and facilitators affecting the use of ulipristal acetate. We performed iterative qualitative data collection and thematic analysis guided by Michie's Theoretical Domains Framework., Results: Over the 3-year study period, 318 patients filled 368 prescriptions for ulipristal acetate. Use of this agent increased between 2015 and 2018. However, levonorgestrel use by sales (range 118 897-129 478 units/yr) was substantially higher than use of ulipristal acetate (range 128-389 units/yr). In the 39 interviews we conducted, from the perspectives of 12 patients, 12 community pharmacists, and 15 prescribers, we identified the following themes and respective theoretical domains as barriers to access: low awareness of ulipristal acetate (knowledge), beliefs and experiences related to shame and stigma (beliefs about consequences), and multiple health system barriers (reinforcement)., Interpretation: Use of ulipristal acetate in BC was low compared with use of levonorgestrel emergency contraception; lack of knowledge, beliefs about consequences and health system barriers may be important impediments to expanding use of ulipristal acetate. These findings illuminate potential factors to explain low use of this agent and point to the need for additional strategies to support implementation., Competing Interests: Competing interests: None declared., (© 2021 CMA Joule Inc. or its licensors.)
- Published
- 2021
- Full Text
- View/download PDF
45. High Prevalence of Genital Human Papillomavirus Infection in Patients With Primary Immunodeficiencies.
- Author
-
Gernert M, Kiesel M, Fröhlich M, Renner R, Strunz PP, Portegys J, Tony HP, Schmalzing M, and Schwaneck EC
- Subjects
- Adult, Aged, Condylomata Acuminata diagnosis, Condylomata Acuminata immunology, Cross-Sectional Studies, Female, Germany epidemiology, Human Papillomavirus DNA Tests, Humans, Immunocompromised Host, Male, Middle Aged, Papillomavirus Infections diagnosis, Papillomavirus Infections immunology, Prevalence, Primary Immunodeficiency Diseases diagnosis, Primary Immunodeficiency Diseases immunology, Risk Assessment, Risk Factors, Young Adult, Condylomata Acuminata epidemiology, Papillomavirus Infections epidemiology, Primary Immunodeficiency Diseases epidemiology
- Abstract
Background: Genital human papillomavirus (HPV)-infections are common in the general population and are responsible for relevant numbers of epithelial malignancies. Much data on the HPV-prevalence is available for secondary immunodeficiencies, especially for patients with human immunodeficiency virus (HIV)-infection. Little is known about the genital HPV-prevalence in patients with primary immunodeficiencies (PIDs)., Methods: We performed a cross-sectional study of patients with PIDs and took genital swabs from male and female patients, which were analyzed with polymerase chain reaction for the presence of HPV-DNA. Clinical and laboratory data was collected to identify risk factors., Results: 28 PID patients were included in this study. 10 of 28 (35.7%) had HPV-DNA in their genital swabs. 6 patients had high-risk HPV-types (21.4%). Most patients had asymptomatic HPV-infections, as genital warts were rare (2 of 28 patients) and HPV-associated malignancy was absent. Differences in the HPV-positivity regarding clinical PID-diagnosis, duration of PID, age, sex, immunosuppression, immunoglobulin replacement, or circumcision in males were not present. HPV-positive PID patients had higher numbers of T cells (CD3
+ ), of cytotoxic T cells (CD3+ /CD8+ ), of transitional B cells (CD19+ /CD38++ /CD10+ /IgD+ ), and of plasmablasts (CD19+ /CD38+ /CD27++ /IgD- ) compared to HPV-negative., Conclusion: PID patients exhibit a high rate of genital HPV-infections with a high rate of high-risk HPV-types. Regular screening for symptomatic genital HPV-infection and HPV-associated malignancy in PID patients seems recommendable., Competing Interests: MG received travel grants from AbbVie, Chugai, Eli Lilly, Hexal, Janssen, Novartis, Pfizer and compensation for board membership from Takeda. MF received travel grants from AbbVie, Novartis, Janssen, Eli Lilly and compensation for board memberships from AbbVie. P-PS received travel grants from AbbVie, Eli Lilly, Janssen-Cilag. JP received travel grants from AbbVie and Janssen-Cilag. H-PT received speaker’s fees, travel grants, research funding, or compensation for consultancies or board memberships from AbbVie, Chugai/Roche, Eli Lilly, Gilead, Janssen, Novartis, Sandoz/Hexal, Sanofi Aventis, Takeda (Shire). MS received speaker’s fees, travel grants, research funding, or compensation for consultancies or board memberships from AbbVie, Actelion, BMS, Boehringer/Ingelheim, Celgene, Chugai/Roche, Eli Lilly, Genzyme, Gilead, Hexal/Sandoz, Janssen-Cilag, MSD, Novartis, Pfizer, Sanofi Pasteur, Takeda (Shire), UCB. ES received speaker’s fees, travel grants, research funding, or compensation for consultancies or board memberships from AbbVie, Chugai/Roche, Janssen-Cilag, Eli Lilly, Novartis, Pfizer, Takeda (Shire). The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Gernert, Kiesel, Fröhlich, Renner, Strunz, Portegys, Tony, Schmalzing and Schwaneck.)- Published
- 2021
- Full Text
- View/download PDF
46. Clonal expansion of large granular lymphocytes in patients with spondyloarthritis and psoriatic arthritis treated with TNFα inhibitors.
- Author
-
Schwaneck EC, Renner R, Tony HP, Weber A, Geissinger E, Gernert M, Fröhlich M, Schmalzing M, and Gadeholt O
- Subjects
- Adult, Aged, Arthritis, Psoriatic drug therapy, Case-Control Studies, Cross-Sectional Studies, Female, Flow Cytometry, Humans, Male, Middle Aged, Prospective Studies, Spondylarthritis drug therapy, T-Lymphocytes metabolism, Tumor Necrosis Factor Inhibitors adverse effects, Arthritis, Psoriatic blood, Spondylarthritis blood, Tumor Necrosis Factor Inhibitors administration & dosage
- Abstract
To determine the prevalence of clonal T-large granular lymphocyte (T-LGL) cells in patients with spondyloarthritis (SpA) and psoriatic arthritis (PsA) and to define possible risk factors for this condition. We present a cross-sectional analysis with retrospective and prospective aspects. 115 SpA patients, 48 PsA patients and 51 controls were recruited between December 28, 2017 and January 23, 2019. Flow cytometry (FACS) was performed to screen for aberrant T-LGL cells. Molecular analysis was then employed to confirm the diagnosis in patients with suggestive FACS findings. Patients with clonal T-LGL populations were followed prospectively by FACS analysis. Electronic patient files were retrospectively analyzed to determine risk factors. Median age was 49 years for SpA, 55.5 years for PsA, and 54 years for controls. Median disease duration of SpA and PsA was 15 years and 11 years, respectively. 79.8% of patients had received biologics at some point, 75.5% had ever received tumor necrosis factor (TNF) inhibitors. 59.5% were treated with TNF inhibitors at the time of study inclusion. We identified clonal T-LGL expansions in 13 individuals equaling a prevalence of 6% (13/214). T-LGL patients were taking TNF inhibitors more frequently at the time of study inclusion (p = 0.022) and were more likely to have ever been treated with TNF inhibition (p = 0.046). Clonal T-LGL expansions can be detected in patients with SpA, PsA and also in healthy controls. Confirming earlier results, exposure to TNFα-blocking agents appears to increase the risk of developing clonal expansions of T-LGL cells., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2021
- Full Text
- View/download PDF
47. Site-specific chemical doping reveals electron atmospheres at the surfaces of organic semiconductor crystals.
- Author
-
He T, Stolte M, Wang Y, Renner R, Ruden PP, Würthner F, and Frisbie CD
- Abstract
Chemical doping controls the electronic properties of organic semiconductors, but so far, doping protocols and mechanisms are less developed than in conventional semiconductors. Here we describe a unique, site-specific, n-type surface doping mechanism for single crystals of two benchmark organic semiconductors that produces dramatic improvement in electron transport and provides unprecedented evidence for doping-induced space charge. The surface doping chemistry specifically targets crystallographic step edges, which are known electron traps, simultaneously passivating the traps and releasing itinerant electrons. The effect on electron transport is profound: field-effect electron mobility increases by as much as a factor of ten, and its temperature-dependent behaviour switches from thermally activated to band-like. Our findings suggest new site-specific strategies to dope organic semiconductors that differ from the conventional redox chemistry of randomly distributed substitutional impurities. Critically, they also verify the presence of doping-induced electron atmospheres, confirming long-standing expectations for organic systems from conventional solid-state theory., (© 2021. The Author(s), under exclusive licence to Springer Nature Limited.)
- Published
- 2021
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.