707 results on '"T Richards"'
Search Results
2. Incorporating the concept of overtransfusion into hemovigilance monitoring: An expert-based definition and criteria from the International HIT-OVER Forum.
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Fischer D, Weigand MA, Moss R, Veiras S, Kübel B, Garcia-Erce JA, Zacharowski K, Meybohm P, Waters JH, Raasveld SJ, Vlaar APJ, Richards T, Meier J, Lasocki S, Hofmann A, Shander A, V Heymann C, Dietrich G, Fries D, Steinbicker AU, Rondinelli MB, Levy JH, Beck G, and Frietsch T
- Abstract
Background: Liberal or overtransfusion (OT) may be regarded as "inappropriate," but it is not reported as a transfusion-related adverse event. A definition of OT is lacking. OT may include overdosing of components, giving the incorrect component, or unnecessary administration without evidence of need for transfusion. OT can be associated with hypercoagulability, thrombosis, alloimmunization, increased mortality, longer hospital stay, increased infection rates, and adverse cardiocirculatory events., Study Design and Methods: In 2023, an expert panel formed a hemovigilance international taskforce embedded in the German Interdisciplinary Taskforce for Clinical Hemotherapy (IAKH). The group was charged with proposing simple criteria to be used by hemovigilance systems to document instances of OT., Results: This international initiative combined a narrative review of the literature for the rate and outcomes of OT with transfusion error reports to propose a definition for OT, including a definition for transfusion-induced hypercoagulopathy (TIH), three new codes for OT/TIH and subcodes A to G, three severity categories (serious adverse event, adverse event, near miss), and four incident codes (definite, probable, possible, not determinable). These codes can be used by hemovigilance systems to appropriately document instances of OT., Conclusions: Global adoption of these codes within hemovigilance systems would assist with the recognition and reporting of instances of OT, promote effective policies for adequate clinical administration techniques, and support technical guidelines for avoidance of OT. Thereby, incorporation of OT into hemovigilance strategies could support adequate use of blood products, increase patient safety, and facilitate blood supply and availability., (© 2024 AABB.)
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- 2024
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3. Development and Feasibility of a Conversation Tool to Garner Mental Health and Intimate Partner Violence History from Patients Seeking Pelvic Healthcare: A Trauma-Informed Approach.
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Snyder K, Jelacic M, Bridgeman M, Bargstadt-Wilson K, Peterson J, and Richards T
- Abstract
A conversation tool was developed by a clinician/researcher partnership to garner mental health and intimate partner violence histories from patients seeking pelvic healthcare. A 3-stage mixed measures approach with healthcare providers ( n = 22) and victim service experts ( n = 8) was utilized to meet study aims. The finalized conversation tool was found to have satisfactory face and content validity as well as to be feasible to implement in clinical settings based on constructs related to acceptability, practicality, demand, and implementation. The next steps will focus on pilot testing the developed tool with health professional students and identifying tool dissemination strategies., Competing Interests: Declaration of Conflicting InterestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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4. A systematic review of management options for symptomatic scaphometacarpal impingement after trapeziectomy.
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Richards T and Trickett RW
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- Humans, Reoperation, Arthrodesis, Arthroplasty methods, Scaphoid Bone surgery, Trapezium Bone surgery
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Pain after trapeziectomy is a vexing problem, most commonly due to scaphometacarpal impingement. A number of treatment strategies have been described and are examined in this systematic review. In total, 27 studies describing revision surgery for unsatisfactory results after trapeziectomy were included. Results after soft tissue or synthetic suspensionplasties, arthrodesis procedures, implant arthroplasty and costochondral autografting were included. Most studies were heterogeneous in terms of patient selection and procedure performed, and the level of evidence and methodological quality were uniformly low. Autologous suspensionplasty procedures are the best studied and most rigorously reported techniques, with modest improvements in pain widely reported. Newer techniques using synthetic suture button suspension are encouraging with the benefit of earlier mobilization but require further study. Due to high incidences of complication and revision, the literature does not support the use of implant arthroplasty after trapeziectomy. Arthrodesis appears to be a reasonable last resort when attempts at suspension have failed., Competing Interests: Declaration of conflicting interestsThe authors declare no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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5. The RSNA Abdominal Traumatic Injury CT (RATIC) Dataset.
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Rudie JD, Lin HM, Ball RL, Jalal S, Prevedello LM, Nicolaou S, Marinelli BS, Flanders AE, Magudia K, Shih G, Davis MA, Mongan J, Chang PD, Berger FH, Hermans S, Law M, Richards T, Grunz JP, Kunz AS, Mathur S, Galea-Soler S, Chung AD, Afat S, Kuo CC, Aweidah L, Villanueva Campos A, Somasundaram A, Sanchez Tijmes FA, Jantarangkoon A, Kayat Bittencourt L, Brassil M, El Hajjami A, Dogan H, Becircic M, Bharatkumar AG, Júdice de Mattos Farina EM, and Colak E
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- Humans, Male, Female, Adult, Abdominal Injuries diagnostic imaging, Tomography, X-Ray Computed
- Abstract
Supplemental material is available for this article.
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- 2024
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6. Assessing the Performance of Models from the 2022 RSNA Cervical Spine Fracture Detection Competition at a Level I Trauma Center.
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Hu Z, Patel M, Ball RL, Lin HM, Prevedello LM, Naseri M, Mathur S, Moreland R, Wilson J, Witiw C, Yeom KW, Ha Q, Hanley D, Seferbekov S, Chen H, Singer P, Henkel C, Pfeiffer P, Pan I, Sheoran H, Li W, Flanders AE, Kitamura FC, Richards T, Talbott J, Sejdić E, and Colak E
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- Humans, Male, Middle Aged, Retrospective Studies, Female, Sensitivity and Specificity, Adult, Contrast Media, Cervical Vertebrae injuries, Cervical Vertebrae diagnostic imaging, Spinal Fractures diagnostic imaging, Spinal Fractures diagnosis, Trauma Centers, Tomography, X-Ray Computed methods
- Abstract
Purpose To evaluate the performance of the top models from the RSNA 2022 Cervical Spine Fracture Detection challenge on a clinical test dataset of both noncontrast and contrast-enhanced CT scans acquired at a level I trauma center. Materials and Methods Seven top-performing models in the RSNA 2022 Cervical Spine Fracture Detection challenge were retrospectively evaluated on a clinical test set of 1828 CT scans (from 1829 series: 130 positive for fracture, 1699 negative for fracture; 1308 noncontrast, 521 contrast enhanced) from 1779 patients (mean age, 55.8 years ± 22.1 [SD]; 1154 [64.9%] male patients). Scans were acquired without exclusion criteria over 1 year (January-December 2022) from the emergency department of a neurosurgical and level I trauma center. Model performance was assessed using area under the receiver operating characteristic curve (AUC), sensitivity, and specificity. False-positive and false-negative cases were further analyzed by a neuroradiologist. Results Although all seven models showed decreased performance on the clinical test set compared with the challenge dataset, the models maintained high performances. On noncontrast CT scans, the models achieved a mean AUC of 0.89 (range: 0.79-0.92), sensitivity of 67.0% (range: 30.9%-80.0%), and specificity of 92.9% (range: 82.1%-99.0%). On contrast-enhanced CT scans, the models had a mean AUC of 0.88 (range: 0.76-0.94), sensitivity of 81.9% (range: 42.7%-100.0%), and specificity of 72.1% (range: 16.4%-92.8%). The models identified 10 fractures missed by radiologists. False-positive cases were more common in contrast-enhanced scans and observed in patients with degenerative changes on noncontrast scans, while false-negative cases were often associated with degenerative changes and osteopenia. Conclusion The winning models from the 2022 RSNA AI Challenge demonstrated a high performance for cervical spine fracture detection on a clinical test dataset, warranting further evaluation for their use as clinical support tools. Keywords: Feature Detection, Supervised Learning, Convolutional Neural Network (CNN), Genetic Algorithms, CT, Spine, Technology Assessment, Head/Neck Supplemental material is available for this article. © RSNA, 2024 See also commentary by Levi and Politi in this issue.
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- 2024
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7. Enhancement of a social risk score in the electronic health record to identify social needs among medically underserved patients: using structured data and free-text provider notes.
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Hatef E, Kitchen C, Gray GM, Zirikly A, Richards T, Ahumada LM, and Weiner JP
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Objective: To improve the performance of a social risk score (a predictive risk model) using electronic health record (EHR) structured and unstructured data., Materials and Methods: We used EPIC-based EHR data from July 2016 to June 2021 and linked it to community-level data from the US Census American Community Survey. We identified predictors of interest within the EHR structured data and applied natural language processing (NLP) techniques to identify patients' social needs in the EHR unstructured data. We performed logistic regression models with and without information from the unstructured data (Models I and II) and compared their performance with generalized estimating equation (GEE) models with and without the unstructured data (Models III and IV)., Results: The logistic model (Model I) performed well (Area Under the Curve [AUC] 0.703, 95% confidence interval [CI] 0.701:0.705) and the addition of EHR unstructured data (Model II) resulted in a slight change in the AUC (0.701, 95% CI 0.699:0.703). In the logistic models, the addition of EHR unstructured data resulted in an increase in the area under the precision-recall curve (PRC 0.255, 95% CI 0.254:0.256 in Model I versus 0.378, 95% CI 0.375:0.38 in Model II). The GEE models performed similarly to the logistic models and the addition of EHR unstructured data resulted in a slight change in the AUC (0.702, 95% CI 0.699:0.705 in Model III versus 0.699, 95% CI 0.698:0.702 in Model IV)., Discussion: Our work presents the enhancement of a novel social risk score that integrates community-level data with patient-level data to systematically identify patients at increased risk of having future social needs for in-depth assessment of their social needs and potential referral to community-based organizations to address these needs., Conclusion: The addition of information on social needs extracted from unstructured EHR resulted in an improved prediction of positive cases presented by the improvement in the PRC., Competing Interests: The authors have no competing interests to declare., (© The Author(s) 2024. Published by Oxford University Press on behalf of the American Medical Informatics Association.)
- Published
- 2024
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8. Community screening for iron deficiency in reproductive aged women: Lessons learnt from Australia.
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MacLean B, Lim J, Fuller J, Wylie R, Joo JY, Al-Sharea A, Cheyyur J, Ng H, Zhang S, Ahmed M, Dugan C, and Richards T
- Abstract
Background and Objectives: Reproductive-aged women are at an increased risk of developing iron deficiency (ID). We aimed to develop a non-invasive screening tool to identify ID in women and assess the acceptability of screening., Study Design and Methods: We screened women (age 18-49 years) in the community of Western Australia., Primary Outcome: acceptability of screening, assessed by the feasibility of recruiting the required sample size (n = 323)., Secondary Outcomes: Hand grip strength, finger prick haemoglobin concentration (Hb), prevalence of heavy menstrual bleeding (HMB), diet, pregnancy history, blood donation, symptoms of ID and history of ID or anaemia (Hb < 120 g/L). Those with Hb <130 g/L and no history of iron therapy in the past 2 years were given referrals for venous full blood count and ferritin sampling., Results: Across 5 days, we recruited 640 eligible women. Of which, 178 (28%) had HMB and 79 (12%) were anaemic. Mean age was 33.5 ± 9.2 years, and mean Hb was 132.4 ± 11.9 g/L. In the past 2 years: 335 (52%) were diagnosed with ID or anaemia; 322 (50%) had taken oral iron; and 210 (33%) had an intravenous iron infusion. Vegetarian diets were followed by 89 (14%); 40 (6%) were regular blood donors; 290 (45%) had a previous pregnancy. HMB increased the risk of symptoms of ID and having prior ID/anaemia diagnosis (67% vs. 47%) or treatment (p < 0.022). Hand grip strength showed a positive relationship with both Hb (adjusted R
2 = 0.012, p = 0.004) and ferritin (adjusted R2 = 0.135, p = 0.005)., Conclusion: ID screening was well accepted by women in the community, with high recruitment rates over a short period. Future screening tool development may consider incorporating hand grip strength and HMB assessment., (© 2024 The Author(s). Vox Sanguinis published by John Wiley & Sons Ltd on behalf of International Society of Blood Transfusion.)- Published
- 2024
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9. Nutcracker syndrome (a Delphi consensus).
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Heilijgers F, Gloviczki P, O'Sullivan G, Chavent B, Avgerinos ED, Harth K, Black SA, Erben YM, Rotmans JI, Richards T, Chaer RA, Villalba L, Jayaraj A, Malgor RD, Tripathi RK, Dua A, Murphy E, Rinckenbach S, Vedantham S, Hamming JF, and van der Vorst JR
- Abstract
Background: Nutcracker syndrome (NCS) describes the symptomatic compression of the left renal vein between the aorta and superior mesenteric artery. Whereas asymptomatic compression is a common radiological finding, patients with NCS can report a range of symptoms. There are no specific diagnostic criteria and interventions include a range of open surgical and endovascular procedures. Therefore, we wished to develop an international consensus document covering aspects of diagnosis, management, and follow-up for patients with NCS., Methods: A three-stage modified Delphi consensus was performed. A steering committee developed 37 statements covering 3 categories for patients with NCS: diagnosis, management, and follow-up. These statements were reported individually by 20 international experts in the management of venous disease, using a 5-point Likert scale. Consensus was defined if ≥70% of respondents rated the statement between 1 and 2 (agreement) and between 4 and 5 (disagreement). Those statements without consensus were recirculated in a second round of voting. A third round of the questionnaire was performed with 14 additional statements to clarify diagnostic values of NCS., Results: Responses were returned by 20 of 20 experts (100%) in round one and 17 of 20 (85%) in round two. Initial consensus was reached in 24 of 37 statements (65%) spread over all categories. Round two achieved a further consensus on 5 out of 10 statements (50%). No categories reported consensus on all statements. In round two consensus was reached in the category of follow-up (4/5 statements [80%]). The final round reached consensus on 5 out of 14 statements (36%). Experts agreed that imaging is obligated to confirm NCS. Experts did not agree on specific diagnostic cut-off values. There was a consensus that the first choice of operative treatment is left renal vein transposition and that the risk of stent migration outweighs the advantages of a percutaneous procedure., Conclusions: Consensus was achieved on most statements concerning the assessment and management of NCS. This Delphi consensus identified those areas in which further research is needed, such as antiplatelet therapy, endovascular treatment, and renal autotransplantation. A rare disease registry to improve data and reports of patient outcomes is warranted., Competing Interests: Disclosures None., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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10. Seroprevalence of SARS-CoV-2 in pediatric hematology-oncology patients.
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Phan V, Richards T, Kang K, Sheridan M, Levorson R, deFilippi C, and Yang E
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- Humans, Child, Male, Female, Adolescent, Child, Preschool, Seroepidemiologic Studies, Neoplasms immunology, Neoplasms drug therapy, Neoplasms epidemiology, Neoplasms blood, Infant, Anemia, Sickle Cell immunology, Anemia, Sickle Cell epidemiology, Anemia, Sickle Cell complications, Anemia, Sickle Cell blood, Young Adult, Hematologic Neoplasms immunology, Hematologic Neoplasms epidemiology, Follow-Up Studies, COVID-19 Vaccines administration & dosage, COVID-19 Vaccines immunology, COVID-19 epidemiology, COVID-19 immunology, COVID-19 prevention & control, SARS-CoV-2 immunology, Antibodies, Viral blood
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Background: The COVID-19 pandemic disproportionately affected persons with underlying medical conditions. SARS-CoV-2 infection susceptibility and vaccine effectiveness in pediatric hematology-oncology patients were unknown., Methods: From February to July 2022, anti-spike and anti-nucleocapsid Ig were assayed in 354 pediatric hematology-oncology subjects, including 53 oncology patients receiving chemotherapy (cancer), 150 patients with sickle cell disease (SCD), and 151 benign consult and long-term follow-up patients (controls). Participants completed a questionnaire., Results: Frequencies of COVID-19 infection, defined by positive PCR/antigen test or anti-nucleocapsid Ig, were 62% in cancer, 71% in SCD, 52% in controls, with SCD statistically different than controls (p = .001). Infection was associated with COVID-19 exposure, Hispanic/Latino or Black/African American ethnicity, multi-family dwelling, sports participation; COVID-19 booster decreased association with infection. In COVID-19-positive cancer patients, 58% had positive anti-nucleocapsid and 76% had positive anti-spike (≥10 U/mL), compared to essentially 100% seroconversion in SCD and controls (p < .0001, p = .01, respectively). Infection led to high anti-spike (≥2500 U/mL) in 12% cancer, 14% SCD, and 15% controls (p = .93). Vaccination resulted in anti-spike positivity in 90% cancer, 100% SCD, and 100% controls (p = .06), and in high anti-spike in 20% cancer, 47% SCD, and 41% controls (p = .36). Of boosted subjects, one of two cancer, 6/6 SCD, and 19/19 controls exhibited high anti-spike., Conclusions: Cancer patients demonstrated similar SARS-CoV-2 infection frequency as controls, but diminished antibody response to infection and vaccination. SCD patients exhibited seroconversion indistinguishable from controls. Vaccination was associated with higher frequency of high anti-spike than infection; vaccination plus booster was most effective in eliciting high anti-spike antibody detectable beyond 90 days., (© 2024 The Author(s). Pediatric Blood & Cancer published by Wiley Periodicals LLC.)
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- 2024
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11. Next generation sequencing identifies WNT signalling as a significant pathway in Autosomal Recessive Polycystic Kidney Disease (ARPKD) manifestation and may be linked to disease severity.
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Richards T, Wilson P, and Goggolidou P
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- Humans, Male, Female, Exome Sequencing, Child, Severity of Illness Index, High-Throughput Nucleotide Sequencing, Adolescent, Child, Preschool, Kidney metabolism, Kidney pathology, Polycystic Kidney, Autosomal Recessive genetics, Polycystic Kidney, Autosomal Recessive pathology, Polycystic Kidney, Autosomal Recessive metabolism, Wnt Signaling Pathway genetics, Receptors, Cell Surface genetics, Receptors, Cell Surface metabolism
- Abstract
Introduction: Autosomal Recessive Polycystic Kidney Disease (ARPKD) is a rare paediatric disease primarily caused by sequence variants in PKHD1. ARPKD presents with considerable clinical variability relating to the type of PKHD1 sequence variant, but not its position. Animal models of Polycystic Kidney Disease (PKD) suggest a complex genetic landscape, with genetic modifiers as a potential cause of disease variability., Methods: To investigate in an unbiased manner the molecular mechanisms of ARPKD and identify potential indicators of disease severity, Whole Exome Sequencing (WES) and RNA-Sequencing (RNA-Seq) were employed on human ARPKD kidneys and age-matched healthy controls., Results: WES confirmed the clinical diagnosis of ARPKD in our patient cohort consisting of ten ARPKD kidneys. Sequence variant type, nor position of PKHD1 sequence variants, was linked to disease severity. Sequence variants in genes associated with other ciliopathies were detected in the ARPKD cohort, but only PKD1 could be linked to disease severity. Transcriptomic analysis on a subset of four ARPKD kidneys representing severe and moderate ARPKD, identified a significant number of genes relating to WNT signalling, cellular metabolism and development. Increased expression of WNT signalling-related genes was validated by RT-qPCR in severe and moderate ARPKD kidneys. Two individuals in our cohort with the same PKHD1 sequence variants but different rates of kidney disease progression, with displayed transcriptomic differences in the expression of WNT signalling genes., Conclusion: ARPKD kidney transcriptomics highlights changes in WNT signalling as potentially significant in ARPKD manifestation and severity, providing indicators for slowing down the progression of ARPKD., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Taylor Richards reports financial support was provided by PKD Charity UK. Paraskevi Goggolidou reports equipment, drugs, or supplies were provided by PKD Charity UK. Patricia Wilson reports a relationship with PKD Charity UK that includes: board membership. Patricia Wilson is an Editorial Board member for BBA Molecular Basis of Disease. 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., (Crown Copyright © 2024. Published by Elsevier B.V. All rights reserved.)
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- 2024
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12. Real-world experience with clinical management of talquetamab in relapsed/refractory multiple myeloma: a qualitative study of US healthcare providers.
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Schinke C, Dhakal B, Mazzoni S, Shenoy S, Scott SA, Richards T, Le HH, DeBrosse A, Okorozo P, McDowell R, Patel S, Bunn J, Hawks K, Zhang X, and Rodriguez C
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- Humans, United States, Male, Female, Middle Aged, Qualitative Research, Antibodies, Bispecific administration & dosage, Antibodies, Bispecific therapeutic use, Aged, Multiple Myeloma drug therapy, Health Personnel
- Abstract
Objective: Talquetamab is the first-in-class GPRC5DxCD3 bispecific antibody for relapsed/refractory multiple myeloma. Given limited real-world data, this study was conducted with US healthcare providers (HCPs) to understand real-world talquetamab dosing and symptom management., Methods: In February/March 2024, individual in-depth interviews (IDIs; n = 10) were conducted with HCPs administering talquetamab in real-world settings. A subsequent expert panel ( n = 6) further discussed current practices., Results: The IDIs reported a variety of settings for step-up dosing (SUD), including inpatient ( n = 5), outpatient ( n = 3), and hybrid models ( n = 2), with a trend toward shorter SUD length to reduce healthcare resource utilization. Most HCPs used a biweekly (Q2W) schedule in SUD ( n = 7) and treatment phases ( n = 8). Six participants explored reducing dose frequency to every 4 weeks (Q4W) in patients following positive disease response to treatment, considering patient convenience and relieving GPRC5D-related symptoms. Panelists recommended symptom management and prophylactic strategies, such as dexamethasone and nystatin mouthwash or zinc and vitamin B complex for oral symptoms, and topical steroids and cosmetic products for skin and nail symptoms., Conclusion: This study outlines current real-world practices for talquetamab. Findings indicate variation in the SUD care setting. The 0.8 mg/kg Q2W dosing schedule was most common, although switching to Q4W is a real-world symptom management strategy for some patients with responses to therapy. GPRC5D-related symptom management approaches are evolving; prophylactic use of dexamethasone and nystatin mouthwash or zinc and vitamin B complex may be effective strategies to alleviate oral symptoms. Further real-world evidence is needed to inform optimal dosing schedules while mitigating symptom impact.
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- 2024
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13. Associations between non-anaemic iron deficiency and outcomes following elective surgery for colorectal cancer: a prospective cohort study.
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Miles LF, Luu S, Ong I, Pac Soo V, Braat S, Burgess A, Heritier S, Tan N, Parker A, Richards T, Burbury KL, and Story DA
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- Humans, Female, Prospective Studies, Male, Aged, Middle Aged, Cohort Studies, Australia epidemiology, Treatment Outcome, Adult, Aged, 80 and over, New Zealand epidemiology, Anemia, Iron-Deficiency blood, Colorectal Neoplasms surgery, Colorectal Neoplasms complications, Elective Surgical Procedures, Iron Deficiencies, Postoperative Complications epidemiology
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Background: Iron deficiency is present in up to 75% of patients presenting for colorectal cancer surgery. It is unclear whether iron deficiency without anaemia is associated with worse postoperative outcomes. We hypothesised that, in adults without anaemia undergoing surgery for colorectal cancer, iron deficiency would be associated with worse postoperative outcomes relative to an iron-replete state., Methods: We performed a prospective, observational study, recruiting adults (aged ≥ 18 y) without anaemia who were undergoing surgery for colorectal cancer in 16 hospitals across Australia and Aotearoa/New Zealand. Anaemia was defined as a haemoglobin concentration < 130 g.l
-1 for men and < 120 g.l-1 for women. Iron deficiency was defined primarily as transferrin saturation < 20%. The primary endpoint was days alive and at home on postoperative day 90. The primary endpoint analysis was adjusted for surgical risk based on recruiting institution; sex; Charlson comorbidity index; CR-POSSUM score; surgical approach; and requirement for neoadjuvant therapy., Results: Of 420 patients, 170 were iron deficient and 250 were iron replete. The median (IQR [range]) days alive and at home in the iron-deficient group was 84.0 (80.7-85.9 [0-88.2]) days and in the iron-replete group was 83.1 (78.7-85.1 [0-88.9]) days. The unadjusted difference in medians between groups was 0.9 (95%CI 0-1.8, p = 0.047) days and the adjusted difference was 0.9 (95%CI 0-1.80, p = 0.042) days, favouring the iron-deficient group., Conclusions: In adult patients without anaemia undergoing surgery for colorectal cancer, iron deficiency defined by transferrin saturation < 20% was not associated with worse patient outcomes and appeared to be associated with more days alive and at home on postoperative day 90., (© 2024 The Author(s). Anaesthesia published by John Wiley & Sons Ltd on behalf of Association of Anaesthetists.)- Published
- 2025
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14. An update on iron therapy as an intervention to reduce blood transfusion for patients undergoing hip fracture surgery.
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MacLean B, Lim J, and Richards T
- Abstract
Competing Interests: The authors declare that they have no conflicts of interest.
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- 2024
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15. Understanding Barriers and Facilitators to Disaster Preparedness in Federally Qualified Health Centers in the United States: A Mixed Methods Study.
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Hassan S, Wiciak M, Escobar K, González Montalvo MDM, Richards T, Villanueva H, Ortiz J, Evans DP, and Nunez-Smith M
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- Humans, Puerto Rico, Surveys and Questionnaires, Male, Female, United States, Adult, Civil Defense methods, Civil Defense statistics & numerical data, Civil Defense standards, United States Virgin Islands, Middle Aged, Disaster Planning methods, Disaster Planning statistics & numerical data, Qualitative Research
- Abstract
Objective: Severe weather events exacerbate existing health disparities due to poorly managed non-communicable diseases (NCDs). Our objective is to understand the experiences of staff, providers, and administrators (employees) of Federally Qualified Health Centers (FQHCs) in Puerto Rico and the US Virgin Islands (USVI) in providing care to patients living with NCDs in the setting of recent climate-related extreme events., Methods: We used a convergent mixed-methods study design. A quantitative survey was distributed to employees at 2 FQHCs in Puerto Rico and the USVI, assessing experience with disasters, knowledge of disaster preparedness, the relevance of NCDs, and perceived gaps. Qualitative in-depth interviews explored their experience providing care for NCDs during recent disasters. Quantitative and qualitative data were merged using a narrative approach., Results: Through the integration of quantitative and qualitative data, we recognize: (1) significant gaps in confidence and preparedness of employees with a need for more training; (2) challenges faced by persons with multiple NCDs, especially cardiovascular and mental health disorders; and (3) most clinicians do not discuss disaster preparedness with patients but recognize their important role in community resilience., Conclusion: With these results, we recommend strengthening the capacity of FQHCs to address the needs of their patients with NCDs in disasters.
- Published
- 2024
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16. Evaluating diagnostic tools, outcome measures and antibiotic approach in diabetic foot osteomyelitis: a scoping review and narrative synthesis.
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Motaganahalli S, Reynolds G, Haikerwal S, Richards T, Peel TN, and Trubiano JA
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Introduction: Diabetic foot osteomyelitis (DFO) is a significant complication of diabetic foot disease; however, diagnosis remains challenging and treatment success is difficult to ascertain. Literature in this space that has utilized varying diagnostic criteria and ideal outcome measures for success is unclear., Areas Covered: This scoping review assesses methods of diagnosis of DFO and definitions of treatment outcomes in the literature assessing antibiotic therapy for treatment of DFO., Expert Opinion: There is a lack of consensus in the design of diabetic foot trials, resulting in difficulty for clinicians to assess and manage serious conditions such as DFO. The cure for DFO is challenging to ascertain and treatment failure may be a better approach to assess outcomes in research assessing the efficacy of antibiotic therapy. In the absence of gold-standard diagnostic tools, practical approaches to outcome assessment may allow for greater clinical applicability of available data.
- Published
- 2024
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17. Urinary Ferritin as a Noninvasive Means of Assessing Iron Status in Young Children.
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Moumin NA, D'Vaz N, Kidd C, MacRae A, Zhou SJ, Richards T, Palmer DJ, Grzeskowiak LE, Sullivan TR, and Green TJ
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- Humans, Child, Preschool, Male, Female, Longitudinal Studies, Iron Deficiencies, Sensitivity and Specificity, Specific Gravity, Western Australia, Cohort Studies, Predictive Value of Tests, Ferritins blood, Biomarkers urine, Biomarkers blood, Iron urine, Iron blood, Anemia, Iron-Deficiency urine, Anemia, Iron-Deficiency diagnosis, Anemia, Iron-Deficiency blood, Nutritional Status, Creatinine urine, Creatinine blood
- Abstract
Background: Iron deficiency (ID) is the most common nutritional deficiency affecting young children. Serum ferritin concentration is the preferred biomarker for measuring iron status because it reflects iron stores; however, blood collection can be distressing for young children and can be logistically difficult. A noninvasive means to measure iron status would be attractive to either diagnose or screen for ID in young children., Objectives: This study aimed to determine the correlation between urinary and serum ferritin concentrations in young children; to determine whether correcting urinary ferritin for creatinine and specific gravity improves the correlation; and to determine a urine ferritin cut point to predict ID., Methods: Validation study was conducted using paired serum and urine collected from 3-y-old children (n = 142) participating in a longitudinal birth cohort study: the ORIGINS project in Perth, Western Australia. We calculated the sensitivity, specificity, positive, and negative predictive values of urinary ferritin amount in identifying those with ID at the clinical cut point used by the World Health Organization (serum ferritin concentration of <12 ng/mL)., Results: Urine ferritin, corrected for creatinine, correlated moderately with serum ferritin [r = 0.53 (0.40-0.64)] and performed well in predicting those with ID (area under the curve: 0.85; 95% confidence interval: 0.75, 0.94). Urine ferritin <2.28 ng/mg creatinine was sensitive (86%) and specific (77%) in predicting ID and had a high negative predictive value of 97%; however, the positive predictive value was low (40%) owing to the low prevalence of ID in the sample (16%)., Conclusions: Urine ferritin shows good diagnostic performance for ID. This noninvasive biomarker maybe a useful screening tool to exclude ID in healthy young children; however, further research is needed in other populations., (Copyright © 2024 American Society for Nutrition. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
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18. Associations between postoperative anaemia and unplanned readmission to hospital after major surgery: a retrospective cohort study † .
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Makar T, Hezkial M, Vasudeva M, Walpole D, Xie J, Zhao CZ, Ou Yang B, Ramesh S, Larsen T, Heritier S, Richards T, and Miles LF
- Subjects
- Humans, Retrospective Studies, Female, Male, Middle Aged, Aged, Cohort Studies, Adult, Risk Factors, Surgical Procedures, Operative adverse effects, Patient Readmission statistics & numerical data, Anemia, Postoperative Complications epidemiology, Hemoglobins analysis
- Abstract
Background: Anaemia following major surgery may be associated with unplanned readmission to hospital. However, the severity-response relationship between the degree of anaemia at discharge and the risk of unplanned readmission is poorly defined. We aimed to describe the severity-response relationship between haemoglobin concentration at the time of discharge and the risk of unplanned readmission in a cohort of patients undergoing different types of major surgery., Methods: We performed a retrospective cohort study in a single tertiary health service, including all patients who underwent major surgery (orthopaedic, abdominal, cardiac or thoracic) between 1 May 2011 and 1 February 2022. The primary outcome was unplanned readmission to hospital in the 90 days following discharge after the index surgical procedure. These complex, non-linear relationships were modelled with restricted cubic splines., Results: We identified 22,134 patients and included 14,635 in the primary analysis, of whom 1804 (12%) experienced at least one unplanned readmission. The odds of unplanned readmission rose when the discharge haemoglobin concentration was < 100 g.l
-1 (p < 0.001). On subgroup analysis, the haemoglobin threshold below which odds of readmission began to increase appeared to be higher in patients undergoing emergency surgery (110 g.l-1 ; p < 0.001) compared with elective surgery. Declining discharge haemoglobin concentration was associated with increased odds ratios (95%CI) of unplanned readmission in patients undergoing orthopaedic (1.08 (1.01-1.15), p = 0.03), abdominal (1.13 (1.07-1.19), p < 0.001) and thoracic (1.12 (1.01-1.24), p = 0.03) procedures, but not cardiac surgery (1.09 (0.99-1.19), p = 0.07)., Conclusions: Our findings suggest that a haemoglobin concentration < 100 g.l-1 following elective procedures and < 110 g.l-1 following emergency procedures, at the time of hospital discharge after major surgery, was associated with unplanned readmission. Future interventional trials that aim to treat postoperative anaemia and reduce unplanned readmission should include patients with discharge haemoglobin below these thresholds., (© 2024 The Authors. Anaesthesia published by John Wiley & Sons Ltd on behalf of Association of Anaesthetists.)- Published
- 2024
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19. Piloting a Clinical Decision Support Tool to Identify Patients With Social Needs and Provide Navigation Services and Referral to Community-Based Organizations: Protocol for a Randomized Controlled Trial.
- Author
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Hatef E, Richards T, Topel K, Hail S, Kitchen C, Shaw K, Zhang T, Lasser EC, and Weiner JP
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- Adult, Female, Humans, Male, Needs Assessment, Patient Navigation organization & administration, Pilot Projects, Social Determinants of Health, Randomized Controlled Trials as Topic, Decision Support Systems, Clinical, Referral and Consultation organization & administration
- Abstract
Background: Social needs and social determinants of health (SDOH) significantly outrank medical care when considering the impact on a person's length and quality of life, resulting in poor health outcomes and worsening life expectancy. Integrating social needs and SDOH data along with clinical risk information within operational clinical decision support (CDS) systems built into electronic health records (EHRs) is an effective approach to addressing health-related social needs. To achieve this goal, applied research is needed to develop EHR-integrated CDS tools and closed-loop referral systems and implement and test them in the digital and clinical workflows at health care systems and collaborating community-based organizations (CBOs)., Objective: This study aims to describe the protocol for a mixed methods study including a randomized controlled trial and a qualitative phase assessing the feasibility, acceptability, and effectiveness of an EHR-integrated digital platform to identify patients with social needs and provide navigation services and closed-loop referrals to CBOs to address their social needs., Methods: The randomized controlled trial will enroll and randomize adult patients living in socioeconomically challenged neighborhoods in Baltimore City receiving care at a single academic health care institution in the 3-month intervention (using the digital platform) or the 3-month control (standard-of-care assessment and addressing of social needs) arms (n=295 per arm). To evaluate the feasibility and acceptability of the digital platform and its impact on the clinical and digital workflow and patient care, we will conduct focus groups with the care teams in the health care system (eg, clinical providers, social workers, and care managers) and collaborating CBOs. The outcomes will be the acceptability, feasibility, and effectiveness of the CDS tool and closed-loop referral system., Results: This clinical trial opened to enrollment in June 2023 and will be completed in March 2025. Initial results are expected to be published in spring 2025. We will report feasibility outcome measures as weekly use rates of the digital platform. The acceptability outcome measure will be the provider's and patient's responses to the truthfulness of a statement indicating a willingness to use the platform in the future. Effectiveness will be measured by tracking a 3-month change in identified social needs and provided navigation services as well as clinical outcomes such as hospitalization and emergency department visits., Conclusions: The results of this investigation are expected to contribute to our understanding of the use of digital interventions and the implementation of such interventions in digital and clinical workflows to enhance the health care system and CBO ability related to social needs assessment and intervention. These results may inform the construction of a future multi-institutional trial designed to test the effectiveness of this intervention across different health care systems and care settings., Trial Registration: ClinicalTrials.gov NCT05574699; https://clinicaltrials.gov/study/NCT05574699., International Registered Report Identifier (irrid): DERR1-10.2196/57316., (©Elham Hatef, Thomas Richards, Kristin Topel, Sofia Hail, Christopher Kitchen, Katherine Shaw, Talan Zhang, Elyse C Lasser, Jonathan P Weiner. Originally published in JMIR Research Protocols (https://www.researchprotocols.org), 23.07.2024.)
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- 2024
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20. Efficacy of iron supplementation on physical capacity in non-anaemic iron-deficient individuals: protocol for an individual patient data meta-analysis.
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Dugan C, Peeling P, Burden R, and Richards T
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- Humans, Systematic Reviews as Topic, Quality of Life, Meta-Analysis as Topic, Fatigue drug therapy, Anemia, Iron-Deficiency drug therapy, Dietary Supplements, Iron therapeutic use, Iron Deficiencies
- Abstract
Background: A deficiency in iron stores is associated with various adverse health complications, which, if left untreated, can progress to states of anaemia, whereby there is significant detriment to an individual's work capacity and quality of life due to compromised erythropoiesis. The most common methods employed to treat an iron deficiency include oral iron supplementation and, in persistent and/or unresponsive cases, intravenous iron therapy. The efficacy of these treatments, particularly in states of iron deficiency without anaemia, is equivocal. Indeed, both randomised control trials and aggregate data meta-analyses have produced conflicting evidence. Therefore, this study aims to assess the efficacy of both oral and intravenous iron supplementation on physical capacity, quality of life, and fatigue scores in iron-deficient non-anaemic individuals using individual patient data (IPD) meta-analysis techniques., Methods: All potential studies, irrespective of design, will be sourced through systematic searches on the following databases: Cochrane Central Register of Controlled Trials, MEDLINE Ovid, Embase Ovid, Web of Science: Science Citation Index Expanded, Web of Science: Conference Proceedings Citation Index-Science, ClinicalTrials.gov, and World Health Organization (WHO) International Clinical Trials Registry Platform. Individual patient data from all available trials will be included and subsequently analysed in a two-stage approach. Predetermined subgroup and sensitivity analyses will be employed to further explain results., Discussion: The significance of this IPD meta-analysis is one of consolidating a clear consensus to better inform iron-deficient individuals of the physiological response associated with iron supplementation. The IPD approach, to the best of our knowledge, is novel for this research topic. As such, the findings will significantly contribute to the current body of evidence., Systematic Review Registration: PROSPERO CRD42020191739., (© 2024. The Author(s).)
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- 2024
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21. Patients need access to their medical records-now.
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Coulter A, Richards T, Giles C, and Walker S
- Subjects
- Humans, Patient Access to Records, United Kingdom, Electronic Health Records
- Abstract
Competing Interests: Competing interests: All authors are members of The BMJ’s International Patient Advisory Panel. TR lives with multiple long term conditions, including metastatic adrenal cancer.
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- 2024
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22. The relationship between menorrhagia, iron deficiency, and anaemia in recreationally active females: An exploratory population based screening study.
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Dugan C, Peeling P, Davies A, MacLean B, Simpson A, Lim J, and Richards T
- Subjects
- Humans, Female, Adult, Cross-Sectional Studies, Middle Aged, Young Adult, Adolescent, Hemoglobins analysis, Risk Factors, Iron Deficiencies, Exercise, Aged, Surveys and Questionnaires, Prevalence, Ferritins blood, Anemia epidemiology, Anemia blood, Anemia diagnosis, Menorrhagia blood, Menorrhagia epidemiology, Anemia, Iron-Deficiency epidemiology, Anemia, Iron-Deficiency blood, Anemia, Iron-Deficiency diagnosis
- Abstract
Objectives: Iron deficiency, anaemia, and menorrhagia - or heavy menstrual bleeding - are interrelated conditions that are highly prevalent and commonly underrecognised in exercising females of reproductive age. This study utilised a screening tool to identify risk factors and symptoms associated with heavy menstrual bleeding, iron deficiency, and anaemia in this population., Design: An observational, cross sectional survey study was employed., Methods: 1042 active females (aged 18-65) completed a comprehensive screening questionnaire and 887 (85 % compliance) provided a fingerprick blood sample for haemoglobin (Hb) concentration measurement. Women that presented as anaemic (defined as a [Hb] < 120 g/L) or deemed to be at risk of iron deficiency (120 < [Hb] < 130 g/L) were asked to complete follow-up blood tests to screen for iron studies., Results: Average [Hb] was 134.2 ± 12.1 g/L, with 94 individuals considered anaemic (10.6 %). Of the sample, 104 underwent follow-up blood tests; 51 (~49 %) presented with iron deficiency (defined as ferritin <30 μg/L). Based on survey responses, 274 (30.9 %) participants were determined to have heavy menstrual bleeding. Those presenting with heavy menstrual bleeding were younger, exercised fewer hours per week, and were more likely to have a history of iron deficiency or anaemia (all p < 0.05). Participants reporting a history of anaemia or iron deficiency were more likely to have heavy menstrual bleeding (anaemia: 39.7 %; iron deficiency; 36.9 %; both p < 0.05)., Conclusions: In this cohort of exercising females of reproductive age, the prevalence of anaemia was 10.6 %. There is a strong association between heavy menstrual bleeding and a self-reported history of iron deficiency and anaemia. Greater awareness of heavy menstrual bleeding and its relationship with iron deficiency and anaemia is needed in this population. Non-invasive screening should be conducted to raise awareness and further understand the associated risk factors and symptomatology., Competing Interests: Declaration of interest statement No potential conflict of interest was reported by the authors. The results of the study are presented clearly, honestly, and without fabrication, falsification, or inappropriate data manipulation., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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23. Associations Between Nonanemic Iron Deficiency and Postoperative Outcomes in Cardiac Surgery: A Systematic Review and Meta-Analysis.
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Peri V, Devlin P, Perry L, Richards T, and Miles LF
- Subjects
- Humans, Treatment Outcome, Length of Stay, Anemia, Iron-Deficiency blood, Anemia, Iron-Deficiency diagnosis, Risk Factors, Iron Deficiencies, Erythrocyte Transfusion adverse effects, Iron blood, Female, Male, Cardiac Surgical Procedures adverse effects, Cardiac Surgical Procedures mortality, Postoperative Complications etiology, Postoperative Complications blood, Postoperative Complications mortality, Postoperative Complications diagnosis, Postoperative Complications epidemiology
- Abstract
Background: Preoperative screening for iron deficiency is a part of patient blood management protocols. This systematic review, meta-analysis, and meta-regression reviews the association between nonanemic iron deficiency and postoperative outcomes in patients undergoing cardiac surgery. We aimed to determine whether preoperative screening for nonanemic iron deficiency should be recommended in patients undergoing cardiac surgery., Methods: Electronic databases MEDLINE (Ovid), Embase (Ovid), and Scopus were searched from inception until December 9, 2022. Studies were considered for inclusion if they (1) used an observational study design; (2) enrolled adult patients undergoing cardiac surgery; and (3) included an iron-deficient and iron-replete group, defined using serum ferritin and/or transferrin saturation. The primary outcome was the length of acute hospital stay. Secondary outcomes included length of intensive care unit stay, requirement for allogeneic red blood cell transfusion, number of red blood cell units transfused, days alive and at home at postoperative days 30 and 90, all-cause postoperative complications, postoperative infection, mortality, and hospital readmission. Meta-regression was performed to assess the effects of study and patient-level factors on the associations between nonanemic iron deficiency and specific outcomes. Individual study quality was assessed using the Risk of Bias in Non-Randomized Studies of Exposures (ROBINS-E) tool. The Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) framework was used to determine the quality of evidence for each outcome., Results: Eight studies (2683 patients) were included. No significant association was observed between nonanemic iron deficiency and any of the primary or secondary outcomes except for an increased requirement for allogeneic red blood cell transfusion (odds ratio [OR], 1.39 [95% confidence interval, CI, 1.16-1.68; P < .001; I2 2.8%]). Meta-regression did not identify any potential sources of heterogeneity to explain variation in individual study results. The quality of evidence was rated as "low" or "very low" for all outcomes., Conclusions: Few high-quality studies are available to assess associations between nonanemic iron deficiency and outcomes after cardiac surgery. Acknowledging these limitations, the presence of preoperative nonanemic iron deficiency was not associated with a change in the primary outcome of length of hospital stay, or any patient-centered secondary outcome compared to those without iron deficiency. There was an association with increased requirement for allogeneic red blood cell transfusion, but this did not impact the reported patient-centered outcomes., Competing Interests: Conflicts of Interest: See Disclosures at the end of the article., (Copyright © 2024 International Anesthesia Research Society.)
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- 2024
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24. Identification and management of preoperative anaemia in adults: A British Society for Haematology Guideline update.
- Author
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Hands K, Daru J, Evans C, Kotze A, Lewis C, Narayan S, Richards T, Taylor C, Timmins S, and Wilson A
- Subjects
- Humans, Adult, Blood Transfusion, Anemia, Iron-Deficiency diagnosis, Anemia, Iron-Deficiency therapy, Anemia, Iron-Deficiency etiology, United Kingdom, Anemia therapy, Anemia diagnosis, Anemia etiology, Preoperative Care standards, Hematinics therapeutic use
- Abstract
This updated British Society for Haematology guideline provides an up-to-date literature review and recommendations regarding the identification and management of preoperative anaemia. This includes guidance on thresholds for the diagnosis of anaemia and the diagnosis and management of iron deficiency in the preoperative context. Guidance on the appropriate use of erythropoiesis-stimulating agents and preoperative transfusion is also provided., (© 2024 British Society for Haematology and John Wiley & Sons Ltd.)
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- 2024
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25. Not "all in the mind".
- Author
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Richards T
- Subjects
- Humans
- Abstract
Competing Interests: Competing interests: none declared.
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- 2024
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26. Images in Vascular Medicine: String of pearls and skydancer in fibromuscular dysplasia (FMD) with abdominal aortic aneurysm (AAA).
- Author
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Western B and Richards T
- Subjects
- Humans, Computed Tomography Angiography, Aortography, Male, Middle Aged, Female, Fibromuscular Dysplasia diagnostic imaging, Fibromuscular Dysplasia complications, Aortic Aneurysm, Abdominal diagnostic imaging, Aortic Aneurysm, Abdominal surgery
- Abstract
Competing Interests: Declaration of conflicting interestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2024
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27. Vascular service provision during the COVID-19 pandemic worsened major amputation rates in socially deprived diabetic populations.
- Author
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AlMajali AS, Richards T, Yusuf SW, and Telgenkamp B
- Subjects
- Humans, Male, Female, Retrospective Studies, Middle Aged, Aged, Social Deprivation, Diabetic Foot surgery, Diabetic Foot epidemiology, Incidence, Pandemics, SARS-CoV-2, Aged, 80 and over, COVID-19 epidemiology, Amputation, Surgical statistics & numerical data
- Abstract
Introduction: The Coronavirus Disease - 2019 (COVID-19) pandemic significantly impacted healthcare service provision and put diabetic patients at increased risk of adverse health outcomes. We aimed to assess the impact of the COVID-19 pandemic on the incidence and demographic shift of major lower-limb amputation in diabetic patients., Methods: We performed a retrospective analysis of diabetic patient records undergoing major lower-limb amputation between 01/03/2019 and 01/03/2021 at the Royal Sussex County Hospital, the regional arterial hub for Sussex. Primary outcomes were amputation incidence rates and patient demographics compared between the prepandemic and pandemic cohorts., Results: The incidence rate ratio of major lower-limb amputations shows a drop in amputations during the pandemic compared to pre-pandemic (IRR 0.82; 95% CI 0.57-1.18). Data suggests a shift in the social deprivation background of patients receiving amputations to disproportionately affect those in the more deprived 50% of the population (p=0.038). Younger patients received more amputations during the pandemic compared to prepandemic levels (p=0.001)., Conclusion: Results suggest that during the COVID-19 pandemic there was a paradoxical reduction in amputations compared to prepandemic levels. However, changes to the demographic makeup of patient's receiving amputations are alarming as younger, and more deprived patients have been disproportionately affected by the pandemic., Competing Interests: The 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 © 2024 AlMajali, Richards, Yusuf and Telgenkamp.)
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- 2024
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28. Erratum for: Performance of the Winning Algorithms of the RSNA 2022 Cervical Spine Fracture Detection Challenge.
- Author
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Lee GR, Flanders AE, Richards T, Kitamura F, Colak E, Lin HM, Ball RL, Talbott J, and Prevedello LM
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- 2024
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29. Lessons Learned in Building Expertly Annotated Multi-Institution Datasets and Hosting the RSNA AI Challenges.
- Author
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Kitamura FC, Prevedello LM, Colak E, Halabi SS, Lungren MP, Ball RL, Kalpathy-Cramer J, Kahn CE Jr, Richards T, Talbott JF, Shih G, Lin HM, Andriole KP, Vazirabad M, Erickson BJ, Flanders AE, and Mongan J
- Subjects
- Humans, Diagnostic Imaging methods, Societies, Medical, North America, Artificial Intelligence, Radiology
- Abstract
The Radiological Society of North America (RSNA) has held artificial intelligence competitions to tackle real-world medical imaging problems at least annually since 2017. This article examines the challenges and processes involved in organizing these competitions, with a specific emphasis on the creation and curation of high-quality datasets. The collection of diverse and representative medical imaging data involves dealing with issues of patient privacy and data security. Furthermore, ensuring quality and consistency in data, which includes expert labeling and accounting for various patient and imaging characteristics, necessitates substantial planning and resources. Overcoming these obstacles requires meticulous project management and adherence to strict timelines. The article also highlights the potential of crowdsourced annotation to progress medical imaging research. Through the RSNA competitions, an effective global engagement has been realized, resulting in innovative solutions to complex medical imaging problems, thus potentially transforming health care by enhancing diagnostic accuracy and patient outcomes. Keywords: Use of AI in Education, Artificial Intelligence © RSNA, 2024.
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- 2024
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30. Health literacy matters.
- Author
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Richards T
- Abstract
Competing Interests: Competing interests: TR has multiple long term conditions including metastatic adrenal cancer.
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- 2024
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31. Vascular access surgery training in the United Kingdom is currently perceived (by trainees) to be inadequate.
- Author
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Richards T, Ahmed I, Harvey R, and El Sakka K
- Abstract
Introduction: Vascular access surgery (VAS) involves the creation and maintenance of arteriovenous access to facilitate haemodialysis. The prevalence of haemodialysis is rising despite increases in kidney transplants on a yearly basis. There is currently only one access surgery fellowship accredited by the Royal College of Surgeons of England. We aimed to establish the experience and perceived competence in access surgery of senior vascular surgery trainees., Methods: A short questionnaire (SurveyMonkey) was used to survey all senior (ST6-ST8) vascular surgery trainees in Health Education England (HEE) vascular surgery training programmes. The short survey asked trainees to report their: (1) training grade; (2) training deanery; (3) experience of access surgery; and (4) whether senior trainees thought they would be able to independently undertake primary access surgery post-completion of training (post Certificate of Completion of Training). The survey was circulated via HEE deaneries and the vascular surgery trainees' society: the Rouleaux Club., Results: Twenty-eight senior (ST6-ST8) vascular surgery trainees responded to the survey: 29.6% were ST6 level, 33.3% were ST7 and 37.1% were ST8. Deanery respondence was evenly spread, although London was overrepresented (37.1%). In total, 28.6% had been involved in fewer than 10 cases, 35.7% in 10-25 cases, and 35.7% in more than 25 cases. Almost 54% of senior vascular surgery trainees believed they would not be able to undertake independent access surgery once they had completed training., Conclusions: Competence in access surgery is an increasing requirement of a consultant vascular surgeon. More formalised training is required to adequately train the next generation of vascular surgeons.
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- 2024
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32. Vascular access surgery training in the United Kingdom is currently perceived (by trainees) to be inadequate.
- Author
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Richards T, Ahmed I, Harvey R, and El Sakka K
- Abstract
Introduction: Vascular access surgery (VAS) involves the creation and maintenance of arteriovenous access to facilitate haemodialysis. The prevalence of haemodialysis is rising despite increases in kidney transplants on a yearly basis. There is currently only one access surgery fellowship accredited by the Royal College of Surgeons of England. We aimed to establish the experience and perceived competence in access surgery of senior vascular surgery trainees., Methods: A short questionnaire (SurveyMonkey) was used to survey all senior (ST6-ST8) vascular surgery trainees in Health Education England (HEE) vascular surgery training programmes. The short survey asked trainees to report their: (1) training grade; (2) training deanery; (3) experience of access surgery; and (4) whether senior trainees thought they would be able to independently undertake primary access surgery post-completion of training (post Certificate of Completion of Training). The survey was circulated via HEE deaneries and the vascular surgery trainees' society: the Rouleaux Club., Results: Twenty-eight senior (ST6-ST8) vascular surgery trainees responded to the survey: 29.6% were ST6 level, 33.3% were ST7 and 37.1% were ST8. Deanery respondence was evenly spread, although London was overrepresented (37.1%). In total, 28.6% had been involved in fewer than 10 cases, 35.7% in 10-25 cases, and 35.7% in more than 25 cases. Almost 54% of senior vascular surgery trainees believed they would not be able to undertake independent access surgery once they had completed training., Conclusions: Competence in access surgery is an increasing requirement of a consultant vascular surgeon. More formalised training is required to adequately train the next generation of vascular surgeons.
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- 2024
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33. Cutting the queue: the need for evidence-driven surgery.
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Darvall JN and Richards T
- Subjects
- Humans, Time Factors, Software, Surgery, Computer-Assisted
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- 2024
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34. Fix or Replace? Patient Preferences for the Treatment of Geriatric Lower Extremity Fractures: A Discrete Choice Experiment.
- Author
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Richards JT, O'Hara NN, Healy K, Zingas N, McKibben N, Benzel C, Slobogean GP, O'Toole RV, and Sciadini MF
- Abstract
Introduction: When considering treatment options for geriatric patients with lower extremity fractures, little is known about which outcomes are prioritized by patients. This study aimed to determine the patient preferences for outcomes after a geriatric lower extremity fracture., Materials and Methods: We administered a discrete choice experiment survey to 150 patients who were at least 60 years of age and treated for a lower extremity fracture at a Level I trauma center. The discrete choice experiment presented study participants with 8 sets of hypothetical outcome comparisons, including joint preservation (yes or no), risk of reoperation at 6 months and 24 months, postoperative weightbearing status, disposition, and function as measured by return to baseline walking distance. We estimated the relative importance of these potential outcomes using multinomial logit modeling., Results: The strongest patient preference was for maintained function after treatment (59%, P < .001), followed by reoperation within 6 months (12%, P < .001). Although patients generally favored joint preservation, patients were willing to change their preference in favor of joint replacement if it increased function (walking distance) by 13% (SE, 66%). Reducing the short-term reoperation risk (12%, P < .001) was more important to patients than reducing long-term reoperation risk (4%, P = .33). Disposition and weightbearing status were lesser priorities to patients (9%, P < .001 and 7%, P < .001, respectively)., Discussion: After a lower extremity fracture, geriatric patients prioritized maintained walking function. Avoiding short-term reoperation was more important than avoiding long-term reoperation. Joint preservation through fracture fixation was the preferred treatment of geriatric patients unless arthroplasty or arthrodesis provides a meaningful functional benefit. Hospital disposition and postoperative weightbearing status were less important to patients than the other included outcomes., Conclusions: Geriatric patients strongly prioritize function over other outcomes after a lower extremity fracture., Competing Interests: N. N. O’Hara receives stock or stock options from Arbutus Medical, Inc. unrelated to this research. G. P. Slobogean receives research funding from the National Institute of Arthritis and Musculoskeletal and Skin Diseases of the National Institutes of Health, and serves as a paid consultant for Smith and Nephew and Zimmer, all unrelated to this research. R. V. O’Toole serves as a paid consultant for Stryker, receives stock options from Imagen, and receives royalties from Lincotek, all unrelated to this research. M. F. Sciadini serves as a paid consult for Globus Medical and Stryker, receives stock options from Stryker, and receives royalties from Globus Medical, all unrelated to this research. The remaining authors report no conflict of interest., (© The Author(s) 2024.)
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- 2024
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35. Coupling remote sensing and eDNA to monitor environmental impact: A pilot to quantify the environmental benefits of sustainable agriculture in the Brazilian Amazon.
- Author
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Dyson K, Nicolau AP, Tenneson K, Francesconi W, Daniels A, Andrich G, Caldas B, Castaño S, de Campos N, Dilger J, Guidotti V, Jaques I, McCullough IM, McDevitt AD, Molina L, Nekorchuk DM, Newberry T, Pereira CL, Perez J, Richards-Dimitrie T, Rivera O, Rodriguez B, Sales N, Tello J, Wespestad C, Zutta B, and Saah D
- Subjects
- Brazil, Agriculture, Forests, Biodiversity, Conservation of Natural Resources, Environmental Monitoring methods, Remote Sensing Technology, DNA, Environmental
- Abstract
Monitoring is essential to ensure that environmental goals are being achieved, including those of sustainable agriculture. Growing interest in environmental monitoring provides an opportunity to improve monitoring practices. Approaches that directly monitor land cover change and biodiversity annually by coupling the wall-to-wall coverage from remote sensing and the site-specific community composition from environmental DNA (eDNA) can provide timely, relevant results for parties interested in the success of sustainable agricultural practices. To ensure that the measured impacts are due to the environmental projects and not exogenous factors, sites where projects have been implemented should be benchmarked against counterfactuals (no project) and control (natural habitat) sites. Results can then be used to calculate diverse sets of indicators customized to monitor different projects. Here, we report on our experience developing and applying one such approach to assess the impact of shaded cocoa projects implemented by the Instituto de Manejo e Certificação Florestal e Agrícola (IMAFLORA) near São Félix do Xingu, in Pará, Brazil. We used the Continuous Degradation Detection (CODED) and LandTrendr algorithms to create a remote sensing-based assessment of forest disturbance and regeneration, estimate carbon sequestration, and changes in essential habitats. We coupled these remote sensing methods with eDNA analyses using arthropod-targeted primers by collecting soil samples from intervention and counterfactual pasture field sites and a control secondary forest. We used a custom set of indicators from the pilot application of a coupled monitoring framework called TerraBio. Our results suggest that, due to IMAFLORA's shaded cocoa projects, over 400 acres were restored in the intervention area and the community composition of arthropods in shaded cocoa is closer to second-growth forests than that of pastures. In reviewing the coupled approach, we found multiple aspects worked well, and we conclude by presenting multiple lessons learned., Competing Interests: The authors have declared that no competing interests exist., (Copyright: This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.)
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- 2024
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36. Assisted dying framed as true love.
- Author
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Richards T
- Subjects
- Humans, Love, Attitude to Death, Suicide, Assisted, Terminal Care
- Abstract
Competing Interests: Competing interests: TR lives with multiple long term conditions including metastatic adrenal cancer.
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- 2024
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37. Systematic review of the results of fenestrated endovascular aortic repair in octogenarians.
- Author
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Elahwal M, Richards T, Imsirovic A, Bagga R, Almond G, and Yusuf SW
- Subjects
- Aged, 80 and over, Humans, Endovascular Aneurysm Repair, Blood Vessel Prosthesis, Octogenarians, Risk Factors, Treatment Outcome, Postoperative Complications etiology, Time Factors, Prosthesis Design, Retrospective Studies, Blood Vessel Prosthesis Implantation adverse effects, Blood Vessel Prosthesis Implantation methods, Aortic Aneurysm, Abdominal surgery, Endovascular Procedures methods
- Abstract
Introduction: With the increasing life expectancy of Western populations, more octogenarians are presenting with large abdominal aortic aneurysm (AAA). Endovascular repair offers a less invasive alternative and older patients who may not have been offered open repair in the past are now being considered for elective repair with this approach. Age in isolation may not be the only consideration in recommending elective aneurysm repair. We aimed to review the literature on complex endovascular AAA repairs (mainly fenestrated endovascular aortic repair [FEVAR]) in octogenarians., Methods: A literature search was conducted using the Ovid Medline
® , Embase® and Cochrane Library databases for articles published up to January 2022. All English language publications from 1995 onwards were eligible for inclusion. Search terms included: "FEVAR", "F-EVAR", "fenestrated EVAR", "fenestrated endovascular aortic repair", "fenestrated endovascular aneurysm repair", "fenestrated AAA repair", "fenestrated endograft", "fenestrated stent graft", "fenestrated", "endograft", "EVAR", "octogenarian", "elderly", "above 80" and "over 80"., Methods: The literature search identified 134 potential articles. Following qualitative assessment by two independent appraisers, this was refined to 11 studies, in accordance with the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) statement., Results: The primary outcome measure was 30-day mortality, which was highly variable, ranging from 0% to 9% in octogenarians and from 0% to 5% in non-octogenarians. However, these differences were only found to be statistically significant in two studies. The secondary outcome measures included technical success rates, major adverse events, reintervention rates, freedom from reintervention, target vessel patency, freedom from target branch instability, and length of hospital and intensive care unit stay. No statistically significant differences were found between octogenarians and non-octogenarians. Long-term survival was significantly lower for octogenarians in two studies., Conclusions: The perioperative outcomes of FEVAR in octogenarians are comparable with those of younger patients. FEVAR therefore appears to be an acceptable option for complex endovascular aneurysm repairs in carefully selected octogenarians. Nevertheless, this review highlights the paucity of published data on the outcomes of endovascular repair of complex aneurysms in octogenarians.- Published
- 2024
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38. Iron Deficiency and Depressive Symptoms: Value of Serum Ferritin Threshold.
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Lim J, MacLean B, and Richards T
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- Humans, Depression, Iron, Ferritins, Iron Deficiencies, Anemia, Iron-Deficiency
- Abstract
Competing Interests: Conflict of interest The authors report no conflicts of interest.
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- 2024
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39. The balance of n-6 and n-3 fatty acids in canine, feline, and equine nutrition: exploring sources and the significance of alpha-linolenic acid.
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Burron S, Richards T, Krebs G, Trevizan L, Rankovic A, Hartwig S, Pearson W, Ma DWL, and Shoveller AK
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- Animals, Dogs, Horses, Cats, Animal Nutritional Physiological Phenomena, Fatty Acids, Omega-3 metabolism, alpha-Linolenic Acid metabolism, Fatty Acids, Omega-6 metabolism, Animal Feed analysis, Diet veterinary
- Abstract
Both n-6 and n-3 fatty acids (FA) have numerous significant physiological roles for mammals. The interplay between these families of FA is of interest in companion animal nutrition due to the influence of the n-6:n-3 FA ratio on the modulation of the inflammatory response in disease management and treatment. As both human and animal diets have shifted to greater consumption of vegetable oils rich in n-6 FA, the supplementation of n-3 FA to canine, feline, and equine diets has been advocated for. Although fish oils are commonly added to supply the long-chain n-3 FA eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), a heavy reliance on this ingredient by the human, pet food, and equine supplement industries is not environmentally sustainable. Instead, sustainable sourcing of plant-based oils rich in n-3 α-linolenic acid (ALA), such as flaxseed and camelina oils, emerges as a viable option to support an optimal n-6:n-3 FA ratio. Moreover, ALA may offer health benefits that extend beyond its role as a precursor for endogenous EPA and DHA production. The following review underlines the metabolism and recommendations of n-6 and n-3 FA for dogs, cats, and horses and the ratio between them in promoting optimal health and inflammation management. Additionally, insights into both marine and plant-based n-3 FA sources will be discussed, along with the commercial practicality of using plant oils rich in ALA for the provision of n-3 FA to companion animals., (© The Author(s) 2024. Published by Oxford University Press on behalf of the American Society of Animal Science.)
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- 2024
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40. Preoperative intravenous iron and the risk of blood transfusion in colorectal cancer surgery: meta-analysis of randomized clinical trials.
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Lederhuber H, Massey LH, Abeysiri S, Roman MA, Rajaretnam N, McDermott FD, Miles LF, Smart NJ, and Richards T
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- Humans, Iron therapeutic use, Randomized Controlled Trials as Topic, Blood Transfusion, Preoperative Care, Hemoglobins, Digestive System Surgical Procedures, Colorectal Neoplasms surgery, Colorectal Neoplasms drug therapy, Anemia, Iron-Deficiency drug therapy
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- 2024
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41. Performance of the Winning Algorithms of the RSNA 2022 Cervical Spine Fracture Detection Challenge.
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Lee GR, Flanders AE, Richards T, Kitamura F, Colak E, Lin HM, Ball RL, Talbott J, and Prevedello LM
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- Male, Humans, Middle Aged, Artificial Intelligence, Retrospective Studies, Algorithms, Cervical Vertebrae diagnostic imaging, Spinal Fractures diagnosis, Fractures, Bone
- Abstract
Purpose To evaluate and report the performance of the winning algorithms of the Radiological Society of North America Cervical Spine Fracture AI Challenge. Materials and Methods The competition was open to the public on Kaggle from July 28 to October 27, 2022. A sample of 3112 CT scans with and without cervical spine fractures (CSFx) were assembled from multiple sites (12 institutions across six continents) and prepared for the competition. The test set had 1093 scans (private test set: n = 789; mean age, 53.40 years ± 22.86 [SD]; 509 males; public test set: n = 304; mean age, 52.51 years ± 20.73; 189 males) and 847 fractures. The eight top-performing artificial intelligence (AI) algorithms were retrospectively evaluated, and the area under the receiver operating characteristic curve (AUC) value, F1 score, sensitivity, and specificity were calculated. Results A total of 1108 contestants composing 883 teams worldwide participated in the competition. The top eight AI models showed high performance, with a mean AUC value of 0.96 (95% CI: 0.95, 0.96), mean F1 score of 90% (95% CI: 90%, 91%), mean sensitivity of 88% (95% Cl: 86%, 90%), and mean specificity of 94% (95% CI: 93%, 96%). The highest values reported for previous models were an AUC of 0.85, F1 score of 81%, sensitivity of 76%, and specificity of 97%. Conclusion The competition successfully facilitated the development of AI models that could detect and localize CSFx on CT scans with high performance outcomes, which appear to exceed known values of previously reported models. Further study is needed to evaluate the generalizability of these models in a clinical environment. Keywords: Cervical Spine, Fracture Detection, Machine Learning, Artificial Intelligence Algorithms, CT, Head/Neck Supplemental material is available for this article. © RSNA, 2024.
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- 2024
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42. Lung transplantation for COVID-2019 respiratory failure in the United States: Outcomes 1-year posttransplant and the impact of preoperative extracorporeal membrane oxygenation support.
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Bermudez C, Bermudez F, Courtwright A, Richards T, Diamond J, Cevasco M, Blumberg E, Christie J, Usman A, and Crespo MM
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- Humans, United States epidemiology, Treatment Outcome, Retrospective Studies, Extracorporeal Membrane Oxygenation adverse effects, COVID-19 therapy, Lung Transplantation adverse effects, Respiratory Insufficiency therapy
- Abstract
Objective: Patients with end-stage respiratory failure after severe coronavirus disease 2019 (COVID-19) infection may benefit from lung transplant; however, data on transplant outcomes and the impact of prolonged circulatory support before transplant in these patients are limited., Methods: We assessed survival, postoperative complications, and the impact of pretransplant extracorporeal membrane oxygenation (ECMO) in patients undergoing lung transplant in the United States from August 2020 through March 2022 using records validated by United Network for Organ Sharing experts and extracted from the United Network for Organ Sharing database., Results: In 305 patients with COVID-19-related respiratory failure and validated data, survival for up to 1-year posttransplant did not differ between 188 patients with COVID-19-related acute respiratory distress syndrome and 117 patients with post-COVID-19 pulmonary fibrosis (P = .8). Pretransplant ECMO support (median 66 days) was required in 191 patients (63%), and venovenous ECMO was used in 91.2% of patients. One-, 6-, and 12-month survival was not significantly different between patients requiring ECMO and patients without ECMO (95.8% vs 99.1%, 93.1% vs 96.4%, 84.8% vs 90.9%, P = .2) In addition, 1-year survival was similar in recipients requiring ECMO for COVID-19 lung failure and recipients requiring ECMO for non-COVID-19 restrictive lung failure (84.8% vs 78.0%, P = .1)., Conclusions: These findings suggest that lung transplant in patients with COVID-19 respiratory failure yields acceptable 1-year outcomes. Despite an often more complex postoperative course, prolonged ECMO pretransplant in well-selected patients was associated with adequate clinical and functional status., (Copyright © 2023. Published by Elsevier Inc.)
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- 2024
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43. Treatment with intravenous iron in postpartum anaemia.
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Lim J, MacLean B, and Richards T
- Abstract
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.
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- 2023
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44. COVID-19 vaccine hesitancy in rural and metropolitan Western Australia: A mid-rollout cross-sectional analysis of why it exists and potential solutions.
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Damianopoulos N, Leigh J, Pugliese M, Frayne J, and Richards T
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- Humans, Adult, Middle Aged, Rural Population, COVID-19 Vaccines, Cross-Sectional Studies, Western Australia, COVID-19 prevention & control, Thrombosis
- Abstract
Introduction: Vaccine hesitancy represents a state of uncertainty before a decision about vaccination is made. It can lead to limited vaccine uptake despite adequate supply and an efficacious product. Western Australia (WA) presents a unique challenge with a population widely spread across metropolitan and rural sites and diverse opinions regarding vaccination., Objective: To elicit and compare the common COVID-19 vaccine concerns in rural and metropolitan WA, and to identify proposed solutions to vaccine hesitancy., Design: A voluntary online survey was distributed via social media over a 2-week period in August 2021 during Phase 2A of the National COVID-19 Vaccine Rollout Strategy. General practitioners and members of the public living in rural and metropolitan WA over the age of 18 were surveyed regarding COVID-19 vaccine concerns (blood clots; long- and short-term side effects; lack of testing; and other concerns) and suggested methods to address vaccine hesitancy. Data were analysed with a sequential mixed methods and thematic analysis approach., Findings: There were 468 general population respondents to our survey, of whom 19.0% (n = 89) lived rurally. A majority (52.6% [n = 246]) of general respondents expressed concerns about COVID-19 vaccine safety. The commonest concerns were long- and short-term side effects, blood clots and inadequate testing. There was a positive correlation between rurality and vaccine concerns; an inverse relationship between rurality and vaccine uptake; and an inverse relationship between vaccine concerns and uptake. Improved media coverage was the commonest solution suggested to address COVID-19 vaccine hesitancy., Discussion: A significant proportion of respondents had concerns about vaccine safety; concerns were more common in rural respondents. Rural communities may benefit from location-targeted media campaigns with a focus on breaking down barriers specific to these members of the population. Vaccine access is more challenging, and consistent messaging from trusted sources is of utmost importance to improve uptake., Conclusion: COVID-19 vaccine hesitancy is more common in rural populations. Targeted media-based education regarding vaccine safety may improve COVID-19 vaccine uptake., (© 2023 The Authors. Australian Journal of Rural Health published by John Wiley & Sons Australia, Ltd on behalf of National Rural Health Alliance Ltd.)
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- 2023
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45. ESAIC focused guideline for the use of cardiac biomarkers in perioperative risk evaluation.
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Lurati Buse G, Bollen Pinto B, Abelha F, Abbott TEF, Ackland G, Afshari A, De Hert S, Fellahi JL, Giossi L, Kavsak P, Longrois D, M'Pembele R, Nucaro A, Popova E, Puelacher C, Richards T, Roth S, Sheka M, Szczeklik W, van Waes J, Walder B, and Chew MS
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- Adult, Humans, Biomarkers, Postoperative Period, Troponin, Health Status Disparities, Natriuretic Peptide, Brain
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Background: In recent years, there has been increasing focus on the use of cardiac biomarkers in patients undergoing noncardiac surgery., Aims: The aim of this focused guideline was to provide updated guidance regarding the pre-, post- and combined pre-and postoperative use of cardiac troponin and B-type natriuretic peptides in adult patients undergoing noncardiac surgery., Methods: The guidelines were prepared using Grading of Recommendations Assessment Development and Evaluation (GRADE) methodology. This included the definition of critical outcomes, a systematic literature search, appraisal of certainty of evidence, evaluation of biomarker measurement in terms of the balance of desirable and undesirable effects including clinical outcomes, resource use, health inequality, stakeholder acceptance, and implementation. The panel differentiated between three different scopes of applications: cardiac biomarkers as prognostic factors, as tools for risk prediction, and for biomarker-enhanced management strategies., Results: In a modified Delphi process, the task force defined 12 critical outcomes. The systematic literature search resulted in over 25,000 hits, of which 115 full-text articles formed the body of evidence for recommendations. The evidence appraisal indicated heterogeneity in the certainty of evidence across critical outcomes. Further, there was relevant gradient in the certainty of evidence across the three scopes of application. Recommendations were issued and if this was not possible due to limited evidence, clinical practice statements were produced., Conclusion: The ESAIC focused guidelines provide guidance on the perioperative use of cardiac troponin and B-type natriuretic peptides in patients undergoing noncardiac surgery, for three different scopes of application., (Copyright © 2023 European Society of Anaesthesiology and Intensive Care. Unauthorized reproduction of this article is prohibited.)
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- 2023
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46. Relationships between GABA, glutamate, and GABA/glutamate and social and olfactory processing in children with autism spectrum disorder.
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Johnson AJ, Shankland E, Richards T, Corrigan N, Shusterman D, Edden R, Estes A, St John T, Dager S, and Kleinhans NM
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- Humans, Male, Child, Smell, Magnetic Resonance Spectroscopy methods, gamma-Aminobutyric Acid, Glutamic Acid, Autism Spectrum Disorder diagnostic imaging
- Abstract
Theories of altered inhibitory/excitatory signaling in autism spectrum disorder (ASD) suggest that gamma amino butyric acid (GABA) and glutamate (Glu) abnormalities may underlie social and sensory challenges in ASD. Magnetic resonance spectroscopy was used to measure Glu and GABA+ levels in the amygdala-hippocampus region and cerebellum in autistic children (n = 30), a clinical control group with sensory abnormalities (SA) but not ASD (n = 30), and children with typical development (n = 37). All participants were clinically assessed using the Autism Diagnostic Interview-Revised, the Autism Diagnostic Observation Scale-2, and the Child Sensory Profile-2. The Social Responsiveness Scale-2, Sniffin Sticks Threshold Test, and the University of Pennsylvania Smell Identification Test were administered to assess social impairment and olfactory processing. Overall, autistic children showed increased cerebellar Glu levels compared to TYP children. Evidence for altered excitatory/inhibitory signaling in the cerebellum was more clear-cut when analyses were restricted to male participants. Further, lower cerebellar GABA+/Glu ratios were correlated to more severe social impairment in both autistic and SA males, suggesting that the cerebellum may play a transdiagnostic role in social impairment. Future studies of inhibitory/excitatory neural markers, powered to investigate the role of sex, may aid in parsing out disorder-specific neurochemical profiles., Competing Interests: Declaration of Competing Interest None., (Copyright © 2023. Published by Elsevier B.V.)
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- 2023
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47. Effects of dietary camelina, flaxseed, and canola oil supplementation on plasma fatty acid concentrations and health parameters in horses.
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Burron S, Richards T, McCorkell TC, Trevizan L, Puttick D, Ma DWL, Pearson W, and Shoveller AK
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- Horses, Animals, Rapeseed Oil, Plant Breeding, Diet veterinary, Dietary Supplements, Fatty Acids, Flax
- Abstract
Camelina (Camelina sativa) is a hardy, low-input oilseed crop that provides a rich source of the n-3 fatty acid, α-linolenic acid (ALA). The primary purpose of the present study was to assess the effects of dietary camelina oil (CAM) consumption on various health parameters, as compared to horses fed canola oil (OLA) or flax oil (FLX). Secondly, to determine how dietary CAM, FLX, and OLA alter circulating plasma total lipids across time. Thirty horses, from three separate herds, were used for this study [14.9 years ± 5.3 years; 544 ± 66 kg calculated BW (mean ± SD)]. After a 4-week gradual acclimation period using sunflower oil mixed with soaked hay cubes, horses were balanced by location, age, sex, weight, and breed and randomly allocated to one of three treatment oils (CAM, OLA, or FLX) at an inclusion of 370 mg of oil/kg BW/day. Horses had ad libitum access to hay and/or pasture for the duration of the study. Body condition score (BCS), BW, oil intake, complete blood counts, plasma biochemical profiles, and plasma total lipids were measured on weeks 0, 2, 4, 8, and 16 throughout the 16-week treatment period. BW, BCS, and oil intake were analyzed using an ANOVA using PROC GLIMMIX in SAS Studio. Complete blood counts and biochemical profiles were analyzed using an ANCOVA, and fatty acids were analyzed using an ANOVA in PROC MIXED in SAS Studio. No differences were observed among treatment groups for BW, BCS, oil intake, complete blood counts, and biochemical parameters. Individual fatty acids that differed among treatments and/or across time were largely reflective of the different FA profiles of the oils provided. Most notably, plasma ALA was greater for FLX than OLA, but neither differed from CAM (P = 0.01). Linoleic acid did not differ among treatments or over time (P > 0.05). The n-6:n-3 ratio decreased over time for both CAM and FLX, and ratios were lower for FLX than OLA at week 16, but not different from CAM (P = 0.02). These results suggest that dietary CAM had no adverse effects on health parameters and that daily supplementation of CAM and FLX at 370 mg of oil/kg BW/day induces positive changes (a decrease) in the n-6:n-3 status of the horse. Consequently, CAM may be considered as an alternative oil to FLX in equine diets., (Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.)
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- 2023
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48. Impact of closed-incision negative pressure wound dressings on surgical site infection following groin incisions in vascular surgery; a single-centre experience.
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Barry IP, Turley LP, Gwilym BL, Bosanquet DC, and Richards T
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- Humans, Retrospective Studies, Vascular Surgical Procedures adverse effects, Bandages, Surgical Wound Infection diagnosis, Surgical Wound Infection epidemiology, Surgical Wound Infection therapy, Groin
- Abstract
Objectives: Surgical site infection (SSI) is a common complication in vascular surgery, and is associated with increased patient morbidity, readmission and reintervention. The aim of this study was to assess the impact of closed-incision negative pressure wound therapy (CiNPWT) upon rate of SSI and length of hospital stay., Methods: This study was reported in line with the STROBE guidelines. We assessed the baseline incidence of SSI from a 12-month retrospective cohort and, following a change in practice intervention with CiNPWT, compared to a 6-month prospective cohort. The primary endpoint was incidence of SSI (according to CDC-NHSN guidelines) while secondary endpoints included length of hospital stay, readmission, reintervention and Days Alive and Out of Hospital (DAOH) to 90-days., Results: A total of 127 groin incisions were performed: 76 (65 patients) within the retrospective analysis and 51 (42 patients) within the prospective analysis (of whom 69% received CiNPWT). The primary endpoint of SSI was seen in 21.1% of the retrospective cohort and 9.8% of the prospective cohort ( p = .099). Readmission was found to be significantly associated with the retrospective cohort ( p = .016) while total admission (inclusive of re-admission) was significantly longer in those in the retrospective cohort ( p = .013). DAOH-90 was 83 days (77-85) following introduction of the CiNPWT protocol as compared to the retrospective cohort (77 days (64-83), p = .04)., Conclusion: Introduction of CiNPWT was associated with a reduced length of hospital stay and improved DAOH-90. Further trials on CINPWT should include patient-centred outcomes and healthcare cost analysis., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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- 2023
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49. Therapeutic Intervention of Neuroinflammatory Alzheimer Disease Model by Inhibition of Classical Complement Pathway with the Use of Anti-C1r Loaded Exosomes.
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Richards T, Perron JC, Patel K, Wurpel J, Reznik SE, and Schanne F
- Abstract
Alzheimer's disease (AD) is a complex neurodegenerative disease associated with memory decline, cognitive impairment, amyloid plaque formation and tau tangles. Neuroinflammation has been shown to be a precursor to apparent amyloid plaque accumulation and subsequent synaptic loss and cognitive decline. In this study, the ability of a novel, small molecule, T-ALZ01, to inhibit neuroinflammatory processes was analyzed. T-ALZ01, an inhibitor of complement component C1r, demonstrated a significant reduction in the levels of the inflammatory cytokines, IL-6 and TNF-α in vitro . An LPS-induced animal model, whereby animals were injected intraperitoneally with 0.5 mg/kg LPS, was used to analyze the effect of T-ALZ01 on neuroinflammation in vivo . Moreover, exosomes (nanosized, endogenous extracellular vehicles) were used as drug delivery vehicles to facilitate intranasal administration of T-ALZ01 across the blood-brain barrier. T-ALZ01 demonstrated significant reduction in degenerating neurons and the activation of resident microglia and astrocytes, as well as inflammatory markers in vivo . This study demonstrates a significant use of small molecule complement inhibitors via exosome drug delivery as a possible therapeutic in disorders characterized by neuroinflammation, such AD., Competing Interests: Competing interests The authors declare no competing interests.
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- 2023
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50. Application of natural language processing to identify social needs from patient medical notes: development and assessment of a scalable, performant, and rule-based model in an integrated healthcare delivery system.
- Author
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Gray GM, Zirikly A, Ahumada LM, Rouhizadeh M, Richards T, Kitchen C, Foroughmand I, and Hatef E
- Abstract
Objectives: To develop and test a scalable, performant, and rule-based model for identifying 3 major domains of social needs (residential instability, food insecurity, and transportation issues) from the unstructured data in electronic health records (EHRs)., Materials and Methods: We included patients aged 18 years or older who received care at the Johns Hopkins Health System (JHHS) between July 2016 and June 2021 and had at least 1 unstructured (free-text) note in their EHR during the study period. We used a combination of manual lexicon curation and semiautomated lexicon creation for feature development. We developed an initial rules-based pipeline (Match Pipeline) using 2 keyword sets for each social needs domain. We performed rule-based keyword matching for distinct lexicons and tested the algorithm using an annotated dataset comprising 192 patients. Starting with a set of expert-identified keywords, we tested the adjustments by evaluating false positives and negatives identified in the labeled dataset. We assessed the performance of the algorithm using measures of precision, recall, and F 1 score., Results: The algorithm for identifying residential instability had the best overall performance, with a weighted average for precision, recall, and F 1 score of 0.92, 0.84, and 0.92 for identifying patients with homelessness and 0.84, 0.82, and 0.79 for identifying patients with housing insecurity. Metrics for the food insecurity algorithm were high but the transportation issues algorithm was the lowest overall performing metric., Discussion: The NLP algorithm in identifying social needs at JHHS performed relatively well and would provide the opportunity for implementation in a healthcare system., Conclusion: The NLP approach developed in this project could be adapted and potentially operationalized in the routine data processes of a healthcare system., Competing Interests: None declared., (© The Author(s) 2023. Published by Oxford University Press on behalf of the American Medical Informatics Association.)
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- 2023
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