371 results on '"Reeves BC"'
Search Results
2. BENEFIT TO PATIENTS AND THE NHS OF CARDIAC MAGNETIC RESONANCE IMAGING AFTER PRIMARY PERCUTANEOUS CORONARY INTERVENTION : DATA CHALLENGES WITHIN A ROUTINE DATA REGISTRY
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Harris, JM, Pufulete, M, Rogers, CA, Brierley, R, Bucciarelli-Ducci, C, Greenwood, JP, Dorman, S, Anderson, RA, and Reeves, BC
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- 2016
3. OP68 Technical and practical challenges in implementing digital applications for self-monitoring visual function in the MONARCH study
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Wickens, RA, primary, Treanor, C, additional, Ward, E, additional, O’Connell, A, additional, Hogg, RE, additional, and Reeves, BC, additional
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- 2020
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4. Predicting mortality for patients with exacerbations of COPD and Asthma in the COPD and Asthma Outcome Study (CAOS)
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Wildman, MJ, Sanderson, C, Groves, J, Reeves, BC, Ayres, J, Harrison, D, Young, D, and Rowan, K
- Published
- 2009
5. Risk of bias and reporting completeness of randomised controlled trials in burn care: protocol for a systematic review
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Young, A, Reeves, BC, Cheng, H-Y, Wasiak, J, Muir, D, Davies, A, Blazeby, J, Young, A, Reeves, BC, Cheng, H-Y, Wasiak, J, Muir, D, Davies, A, and Blazeby, J
- Abstract
INTRODUCTION: Burn care represents a healthcare and economic burden to patients internationally. Choice of the most clinically effective treatment strategies requires evidence which is best obtained through high-quality randomised controlled trials (RCT). The number of published RCTs of burn care is increasing. However, trial quality and reporting standards are unclear. This study will assess the risk of bias and adequacy of reporting in recent burn care RCTs using tools endorsed by the Cochrane Collaboration. METHODS AND ANALYSIS: A systematic literature review will be undertaken, assessing parallel group RCTs evaluating therapeutic interventions for patients with cutaneous burns. Literature searches will use Ovid Medline, Ovid Embase, Web of Science and the Cochrane Library. Separate searches for each database will include medical subject heading and free text terms including 'burn', 'scald', 'thermal injury' and 'RCT'. Two reviewers will independently assess each study for inclusion. Risk of bias (RoB) will be assessed with the revised tool (RoB 2) and reporting completeness with the CONsolidated Standards of Reporting Trials (CONSORT) 2010 guidelines. We will report a narrative synthesis of all studies, including domain specific, and overall risk of bias for the primary outcome of each trial. Inter-rater agreement for RoB 2 will be reported using Fleiss's Kappa. For adherence to the CONSORT guidelines, we will generate a completeness of reporting index for the five domains. ETHICS AND DISSEMINATION: No ethics approval is required because published documents will be used. Findings of the study will be disseminated in a peer-reviewed journal and presented at conferences. PROSPERO REGISTRATION NUMBER: CRD42018111020.
- Published
- 2019
6. A qualitative study to identify indicators of the quality of wound closure
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Blencowe, NS, primary, Rooshenas, L, additional, Tolkien, Z, additional, Bera, KD, additional, Gould Brown, H, additional, Elliott, D, additional, Reeves, BC, additional, and Blazeby, JM, additional
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- 2019
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7. Ranibizumab versus bevacizumab to treat neovascular age-related macular degeneration: One-year findings from the IVAN randomized trial
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Chakravarthy, U, Harding, SP, Rogers, CA, Downes, SM, Lotery, AJ, Wordsworth, S, and Reeves, BC
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genetic structures - Abstract
Purpose: To compare the efficacy and safety of ranibizumab and bevacizumab intravitreal injections to treat neovascular age-related macular degeneration (nAMD). Design: Multicenter, noninferiority factorial trial with equal allocation to groups. The noninferiority limit was 3.5 letters. This trial is registered (ISRCTN92166560). Participants: People >50 years of age with untreated nAMD in the study eye who read
- Published
- 2016
8. Primary total hip replacement: variations in patient management in Oxford and Anglia, Trent, Yorkshire and Northern 'regions'
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Morris, RW, Fitzpatrick, R, Hajat, S, Reeves, BC, Murray, DW, Hannen, D, Rigge, M, Williams, O, and Gregg, PJ
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OBJECTIVES: To examine national practice, and variations in practice, concerning total hip replacement; in particular the choice of prosthesis and the involvement of consultants in NHS operations. DESIGN: Pre-operative survey of patients undergoing total hip replacement. SETTING: Five English regions serving combined population of 16.8 million people. SUBJECTS: 13,343 total hip replacement operations in one year commencing September 1996, either in NHS or private sector. MAIN OUTCOME MEASURES: Prosthesis used for surgery, status of surgeons involved in operation, use of laminar flow operating theatre. RESULTS: Prostheses without well documented 5-year survival were used in 5504 (58%) of 9417 operations for which information was available. The consultant was the operator in 4810 (64%) of 7499 NHS operations. In 1352 trainee-led operations, the consultant was present for only 637 (47%); this figure was 54% for trainees in years 1-4 of their training. Substantial variation between NHS consultant firms occurred both for use of prostheses with well documented survival data, and supervision of trainees by the consultant. CONCLUSIONS: This large study is the first attempt to describe national practice for primary total hip replacement. Substantial variation among consultant firms was observed for all indices of practice reported.
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- 2016
9. P08 Serum B-type natriuretic peptide (BNP or NT-BNP) testing and monitoring in patients with heart failure (HF): the challenges of setting up and analysing a population based cohort study in the Clinical Practice Research Datalink (CPRD)
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McDonagh, T, primary, Reeves, BC, additional, Pufulete, M, additional, Maishman, R, additional, Dreyer, L, additional, Rogers, CA, additional, Dayer, M, additional, Nightingale, A, additional, Purdy, S, additional, Macleod, J, additional, Hollingworth, W, additional, and Williams, R, additional
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- 2016
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10. P103 Benefit to Patients and the NHS of Cardiac Magnetic Resonance Imaging after Primary Percutaneous Coronary Intervention: Data challenges within a Routine Data Registry
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Harris, JM, primary, Pufulete, M, additional, Rogers, CA, additional, Brierley, R, additional, Bucciarelli-Ducci, C, additional, Greenwood, JP, additional, Dorman, S, additional, Anderson, RA, additional, and Reeves, BC, additional
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- 2016
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11. PP20 Is red cell transfusion beneficial and safe after cardiac surgery? Intention-to-treat compared to instrumental variable analyses in the Transfusion Indication Threshold Reduction (TITRe2) randomised controlled trial (RCT)
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Pike, K, primary, Rogers, CA, additional, Sterne, JAC, additional, Murphy, GJ, additional, and Reeves, BC, additional
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- 2014
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12. Multicentre randomised controlled trial of nasal diamorphine for analgesia in children and teenagers with clinical fractures
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Kendall, JM, Reeves, BC, Latter, VS, and Nasal Diamorphine Trial Group
- Abstract
OBJECTIVE: To compare the effectiveness of nasal diamorphine spray with intramuscular morphine for analgesia in children and teenagers with acute pain due to a clinical fracture, and to describe the safety profile of the spray. DESIGN: Multicentre randomised controlled trial. SETTING: Emergency departments in eight UK hospitals. PARTICIPANTS: Patients aged between 3 and 16 years presenting with a clinical fracture of an upper or lower limb. MAIN OUTCOME MEASURES: Patients' reported pain using the Wong Baker face pain scale, ratings of reaction to treatment of the patients and acceptability of treatment by staff and parents, and adverse events. RESULTS: 404 eligible patients completed the trial (204 patients given nasal diamorphine spray and 200 given intramuscular morphine). Onset of pain relief was faster in the spray group than in the intramuscular group, with lower pain scores in the spray group at 5, 10, and 20 minutes after treatment but no difference between the groups after 30 minutes. 80% of patients given the spray showed no obvious discomfort compared with 9% given intramuscular morphine (difference 71%, 95% confidence interval 65% to 78%). Treatment administration was judged acceptable by staff and parents, respectively, for 98% (199 of 203) and 97% (186 of 192) of patients in the spray group compared with 32% (64 of 199) and 72% (142 of 197) in the intramuscular group. No serious adverse events occurred in the spray group, and the frequencies of all adverse events were similar in both groups (spray 24.1% v intramuscular morphine 18.5%; difference 5.6%, -2.3% to 13.6%). CONCLUSION: Nasal diamorphine spray should be the preferred method of pain relief in children and teenagers presenting to emergency departments in acute pain with clinical fractures. The diamorphine spray should be used in place of intramuscular morphine.
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- 2001
13. Modelling of longitudinal outcomes with highly skewed distributions: applications in the IVAN trial
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Nash, R, primary, Scott, L, additional, Chakravarthy, U, additional, Harding, SP, additional, Reeves, BC, additional, and Rogers, CA, additional
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- 2013
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14. Recruitment challenges in surgical trials: lessons from the crisp trial
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Pike, K, primary, Angelini, GD, additional, Reeves, BC, additional, Taggart, DP, additional, and Rogers, CA, additional
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- 2013
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15. Verteporfin photodynamic therapy for neovascular age-related macular degeneration: cohort study for the UK.
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Reeves, BC, primary, Harding, SP, additional, Langham, J, additional, Grieve, R, additional, Tomlin, K, additional, Walker, J, additional, Guerriero, C, additional, Carpenter, J, additional, Patton, WP, additional, Muldrew, KA, additional, Peto, T, additional, and Chakravarthy, U, additional
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- 2012
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16. Identification of risk factors by systematic review and development of risk-adjusted models for surgical site infection.
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Gibbons, C, primary, Bruce, J, additional, Carpenter, J, additional, Wilson, AP, additional, Wilson, J, additional, Pearson, A, additional, Lamping, DL, additional, Krukowski, ZH, additional, and Reeves, BC, additional
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- 2011
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17. Principles of Research: Limitations of Non-randomized Studies
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Reeves, BC, primary
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- 2003
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18. Risks of adverse events with therapies for age-related macular degeneration: a response.
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Williams T, Reeves BC, Foss AJ, and Fell G
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- 2012
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19. Variation in outcome after subarachnoid hemorrhage: a study of neurosurgical units in UK and Ireland.
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Langham J, Reeves BC, Lindsay KW, van der Meulen JH, Kirkpatrick PJ, Gholkar AR, Molyneux AJ, Shaw DM, Copley L, Browne JP, Steering Group for National Study of Subarachnoid Haemorrhage, Langham, Julia, Reeves, Barnaby C, Lindsay, Kenneth W, van der Meulen, Jan H, Kirkpatrick, Peter J, Gholkar, Anil R, Molyneux, Andrew J, Shaw, Donald M, and Copley, Lynn
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- 2009
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20. Increased mortality, morbidity, and cost associated with red blood cell transfusion after cardiac surgery.
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Reeves BC and Murphy GJ
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- 2008
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21. Implementation of computerised physician order entry (CPOE) and picture archiving and communication systems (PACS) in the NHS: quantitative before and after study.
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Collin S, Reeves BC, Hendy J, Fulop N, Hutchings A, and Priedane E
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- 2008
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22. What do patients really want? Patients' preferences for treatment for angina.
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Bowling A, Culliford L, Smith D, Rowe G, and Reeves BC
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Objective To measure preferences for angina treatments among patients admitted from accident and emergency with acute coronary syndrome. Background Evidence suggests variability in treatment allocations amongst certain socio-demographic groups (e.g. related to age and sex), although it is unclear whether this reflects patient choice, as research on patients' treatment preferences is sparse. Given current policy emphasis on 'patient choice', providers need to anticipate patients' preferences to plan appropriate and acceptable health services. Design Self-administered questionnaire survey. Setting In-patients in a UK hospital. Participants A convenience sample of 53 newly admitted patients with acute coronary syndrome. Exclusion criteria were: a previous cardiologist consultation (including previous revascularization); a clinical judgement of too ill to participate; post-admission death; non-cardiac reasons for chest pain. Main outcome measures Patients' preferences for coronary artery bypass graft (CABG); angioplasty; and two medication alternatives. Results Angioplasty was the preferred treatment (for 80% of respondents), and CABG was second (most preferred by 19%, but second most preferred for 60%). The two least preferred (and least acceptable) treatments were medications. The majority of patients (83%) would 'choose treatment based on the extent of benefits' and 'accept any treatment, no matter how extreme, to return to health'. There were some differences in preference related to age (>70 years preferred medication to a greater degree than <70 years) and sex (males preferred CABG surgery more than females). Conclusions There was general preference for procedural interventions over medication, but most patients would accept any treatment, however extreme, to return to former health. There was some evidence of differences in preferences related to age and sex. Furthermore, most patients preferred to have some input into treatment choice (e.g. nearly half wanted to share decision responsibility with their doctor), with only 4% preferring to leave the decision entirely to their doctor. Given these findings, and past findings that suggest there may be variability in treatment allocation according to certain socio-demographic factors, this study suggests a need to develop and use preference measures, and makes a step towards this. [ABSTRACT FROM AUTHOR]
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- 2008
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23. Increased mortality, postoperative morbidity, and cost after red blood cell transfusion in patients having cardiac surgery.
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Murphy GJ, Reeves BC, Rogers CA, Rizvi SI, Culliford L, Angelini GD, Murphy, Gavin J, Reeves, Barnaby C, Rogers, Chris A, Rizvi, Syed I A, Culliford, Lucy, and Angelini, Gianni D
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- 2007
24. Economic evaluation of a rehabilitation program integrating exercise, self-management, and active coping strategies for chronic knee pain.
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Hurley MV, Walsh NE, Mitchell HL, Pimm TJ, Williamson E, Jones RH, Reeves BC, Dieppe PA, and Patel A
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- 2007
25. Clinical effectiveness of a rehabilitation program integrating exercise, self-management, and active coping strategies for chronic knee pain: a cluster randomized trial.
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Hurley MV, Walsh NE, Mitchell HL, Pimm TJ, Patel A, Williamson E, Jones RH, Dieppe PA, and Reeves BC
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- 2007
26. Integrated exercise and self-management programmes in osteoarthritis of the hip and knee: a systematic review of effectiveness.
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Walsh NE, Mitchell HL, Reeves BC, and Hurley MV
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The aim of this systematic review was to investigate the clinical effects of integrated exercise and self-management programmes on pain and function in patients with hip and knee osteoarthritis, and to determine the cost-effectiveness of these interventions. A multiple database literature search identified randomised controlled trials reporting treatment regimens that combined exercise with interventions promoting self-management. A predetermined protocol was developed by the reviewers who then independently appraised the methodological quality of the studies, and extracted outcome data for pain and function. Of 109 abstracts identified, 10 studies met the inclusion criteria for this review. Outcome data suggested that interventions reduced pain and improved function, but many of the papers had methodological flaws, such as low statistical power, limited blinding and randomisation procedures, short follow-up and protracted treatment regimens. No associated cost analyses were included in any of the studies accepted within the review. Combining exercise and psychological interventions improves pain and function in hip and knee osteoarthritis, although methodological problems limit the ability to extrapolate the findings of these studies into clinical practice. Rigorously designed research studies of typical patients, using clinically applicable and practicable interventions with long-term follow-up and cost-benefit analyses are required to inform management guidelines and clinical practice. [ABSTRACT FROM AUTHOR]
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- 2006
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27. Complications of surgery for nasal polyposis and chronic rhinosinusitis: the results of a national audit in England and Wales.
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Hopkins C, Browne JP, Slack R, Lund VJ, Topham J, Reeves BC, Copley LP, Brown P, van der Meulen JHP, Hopkins, Claire, Browne, John P, Slack, Rob, Lund, Valerie J, Topham, John, Reeves, Barnaby C, Copley, Lynn P, Brown, Peter, and van der Meulen, Jan H P
- Abstract
Objective: The objective of this study was to determine the rate of complications of surgery for nasal polyposis and chronic rhinosinusitis as well as their risk factors. STUDY DESIGN, SETTING, PARTICIPANTS, AND OUTCOME MEASURES: The authors conducted a prospective study of 3,128 patients who underwent sinonasal surgery during 2000 and 2001 in 87 National Health Service hospitals in England and Wales. Patients completed a preoperative questionnaire that included the Sino-Nasal Outcome Test, a measure of sinonasal symptoms severity and health-related quality of life. Surgeons provided information about polyp extent, opacity of the sinuses on computed tomography (Lund-Mackay score), comorbidity (American Society of Anesthesiologists score), and the occurrence of perioperative complications.Results: Major complications (orbital or intracranial complications, bleeding requiring ligation or orbital decompression, or return to the operating room) occurred in 11 patients (0.4%). Minor complications (all other untoward events) occurred in 207 patients (6.6%). Most frequently reported minor complications were excessive perioperative hemorrhage bleeding (5.0%) as well as postoperative hemorrhage requiring treatment (0.8%). Multivariate analysis indicated that the complication rate was linked to the extent of disease measured in terms of symptom severity and health-related quality of life, the extent of polyposis, level of opacity of the sinuses on computed tomography, and the presence of comorbidity, but not surgical characteristics (extent of surgery, use of endoscope or microdebrider, grade of surgeon, and adjunctive turbinate surgery).Conclusions: The risk of complications depended on patient characteristics rather than on the surgical technique used. Measures of the extent of disease and comorbidity may help in identifying patients at high risk of complications. [ABSTRACT FROM AUTHOR]- Published
- 2006
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28. Retinal and cerebral microembolization during coronary artery bypass surgery: a randomized, controlled trial.
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Ascione R, Ghosh A, Reeves BC, Arnold J, Potts M, Shah A, and Angelini GD
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- 2005
29. Surgical wound infection as a performance indicator: agreement of common definitions of wound infection in 4773 patients.
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Wilson APR, Gibbons C, Reeves BC, Hodgson B, Liu M, Plummer D, Krukowski ZH, Bruce J, Wilson J, and Pearson A
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- 2004
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30. Effectiveness of coronary artery bypass grafting with or without cardiopulmonary bypass in overweight patients.
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Ascione R, Reeves BC, Rees K, Angelini GD, Ascione, Raimondo, Reeves, Barnaby C, Rees, Karen, and Angelini, Gianni D
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- 2002
31. A review of data-derived methods for assigning causes of death from verbal autopsy data.
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Reeves, BC, Quigley, M, and Reeves, B C
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Background: Verbal autopsy (VA) is an indirect method for estimating cause-specific mortality. In most previous studies, cause of death has been assigned from verbal autopsy data using expert algorithms or by physician review. Both of these methods may have poor validity. In addition, physician review is time consuming and has to be carried out by doctors. A range of methods exist for deriving classification rules from data. Such rules are quick and simple to apply and in many situations perform as well as experts.Methods: This paper has two aims. First, it considers the advantages and disadvantages of the three main methods for deriving classification rules empirically; (a) linear and other discriminant techniques, (b) probability density estimation and (c) decision trees and rule-based methods. Second, it reviews the factors which need to be taken into account when choosing a classification method for assigning cause of death from VA data.Results: Four main factors influence the choice of classification method: (a) the purpose for which a classifier is being developed, (b) the number of validated causes of death assigned to each case, (c) the characteristics of the VA data and (d) the need for a classifier to be comprehensible. When the objective is to estimate mortality from a single cause of death, logistic regression should be used. When the objective is to determine patterns of mortality, the choice of method will depend on the above factors in ways which are elaborated in the paper.Conclusion: Choice of classification method for assigning cause of death needs to be considered when designing a VA validation study. Comparison of the performance of classifiers derived using different methods requires a large VA dataset, which is not currently available. [ABSTRACT FROM AUTHOR]- Published
- 1997
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32. A randomised trial of calcium alginate swabs to control blood loss in 3-5-year-old children
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Henderson, NJ, Crawford, PJ, and Reeves, BC
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- 1998
33. Parachute approach to evidence based medicine: as obvious as ABC.
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Reeves BC
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- 2006
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34. STUDIEN-VERZERRUNGEN VERRINGERN.
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Sterne, JAC, Higgins, JPT, and Reeves, BC
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- 2015
35. Applicability and generalisability of published results of randomised controlled trials and non-randomised studies evaluating four orthopaedic procedures: methodological systematic review.
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Pibouleau L, Boutron I, Reeves BC, Nizard R, and Ravaud P
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- 2009
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36. Early and midterm outcome after off-pump and on-pump surgery in Beating Heart Against Cardioplegic Arrest Studies (BHACAS 1 and 2): a pooled analysis of two randomised controlled trials.
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Angelini GD, Taylor FC, Reeves BC, and Ascione R
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- 2002
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37. Endoscopic endonasal resection of olfactory tract hamartoma for pediatric epilepsy.
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Kundishora AJ, Reeves BC, Lerner DK, Storm PB, Prelack MS, Palmer JN, Adappa ND, and Kennedy BC
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- Humans, Male, Adolescent, Neuroendoscopy methods, Hamartoma surgery, Hamartoma complications, Olfactory Bulb surgery, Olfactory Bulb pathology, Drug Resistant Epilepsy surgery
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Background: Non-hypothalamic glioneural hamartomas are rare entities known to cause medically refractory epilepsy. Olfactory bulb hamartomas, in particular, are exceptionally rare., Methods: We describe a case of an olfactory bulb hamartoma that was surgically resected at our institution. We also performed a literature review of all glioneural hamartomas and discuss the clinical presentation, diagnosis, and management of these lesions., Results: Herein, we present the unusual case of a typically developing 17-year-old boy with a near life-long history of drug-resistant epilepsy, found to have a 0.8 × 1.0 cm right olfactory bulb hamartoma. Endoscopic endonasal trans-cribriform resection of the lesion led to seizure freedom in the 6-month follow-up period (Engel class 1 outcome). Comprehensive literature review revealed only one other sporadic case, which was also successfully treated with total surgical resection., Conclusions: Our case of an olfactory bulb hamartoma adds to the limited literature currently available, illustrating key clinical characteristics of these exceedingly rare lesions and outlining an effective, minimally invasive, and low-morbidity treatment strategy., Competing Interests: Declarations. Conflict of interest: The authors declare no competing interests., (© 2024. The Author(s).)
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- 2024
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38. Peri-operative Replacement of Exogenous Steroids (PREdS): a national audit of current peri-operative prescribing for patients taking therapeutic steroids.
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Barker OJH, Ramesh AV, Kangesan I, Barnes J, Harrogate S, Gupta S, Reeves BC, and Gibbison B
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- Humans, Female, Male, Middle Aged, Aged, United Kingdom, Adult, Glucocorticoids therapeutic use, Glucocorticoids administration & dosage, Medical Audit methods, Prednisolone therapeutic use, Guideline Adherence statistics & numerical data, Adrenal Insufficiency drug therapy, Adrenal Cortex Hormones therapeutic use, Young Adult, Hormone Replacement Therapy methods, Aged, 80 and over, Perioperative Care methods
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Introduction: Approximately 1% of the UK population take oral corticosteroids for ≥ 28 days each year, for broadly two reasons: deficiency in corticosteroid requiring replacement; or therapeutic corticosteroid for inflammatory conditions. Acute deficiency can occur at times of physiological stress (e.g. surgery), potentially leading to major complications. The Association of Anaesthetists' 2020 consensus guideline provides detailed advice for the management of glucocorticoids during the peri-operative period for patients with adrenal insufficiency. This national audit aimed to assess compliance with this guideline., Methods: Data were collected from 59 Trusts over 14 consecutive days for all eligible patients undergoing procedures under the care of an anaesthetist. Patients who were prescribed ≥ 5 mg oral prednisolone equivalents pre-operatively, in whom supplementary corticosteroid would be indicated, were compared with those prescribed < 5 mg oral prednisolone equivalents., Results: Operations for 21,731 patients were audited: 277 (1.3%) patients were taking therapeutic corticosteroids. Detailed peri-operative data were collected for all patients receiving therapeutic corticosteroids: 201/277 (73%) were ASA physical status ≥ 3; 184/277 (66%) underwent elective procedures; and 252/277 (91%) were prescribed prednisolone pre-operatively, of whom 219/277 (79%) were prescribed ≥ 5 mg oral prednisolone equivalents. In the patients who were prescribed ≥ 5 mg oral prednisolone equivalents, 186/219 (85%) received pre-operative glucocorticoid supplementation and 97/219 (42%) received it postoperatively; however, only 67/219 (31%) and 43/219 (20%) respectively received glucocorticoid supplementation according to the guidelines. Overall, peri-operative prescribing was compliant in 19/219 (9%) patients. A similar proportion, 30/219 (14%), received no supplementation. In the patients taking < 5 mg oral prednisolone equivalents pre-operatively, 28/58 (48%) received inappropriate supplementation., Conclusions: Despite 125/277 (45%) of anaesthetists reporting Association of Anaesthetists' guidelines use, compliance remained low, with adherence in only 27/125 (22%) patients. Further research is required to identify the correct peri-operative strategy for patients taking therapeutic corticosteroids., (© 2024 Association of Anaesthetists.)
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- 2024
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39. High inpatient-opioid consumption predicts extended length of hospital stay in patients undergoing spinal fusion for adolescent idiopathic scoliosis.
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Sandhu MRS, Craft S, Reeves BC, Sayeed S, Hengartner AC, Tuason DA, DiLuna M, and Elsamadicy AA
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Objectives: Opioids are common medications used following spine surgery. However, few studies have assessed the impact of increased inpatient-opioid consumption on outcomes following posterior spinal fusion (PSF) for adolescent idiopathic scoliosis (AIS). The aim of this study was to determine the impact of increased inpatient-opioid consumption on hospital length of stay (LOS) following PSF for AIS., Methods: A retrospective cohort study was performed using the Premier Healthcare Database (2016-2017). Adolescent patients (11-17 years old) who underwent PSF for AIS, identified using ICD-10-CM coding, were stratified by inpatient MME (morphine milligram equivalent) consumption into Low (< 25th percentile for the cohort), Medium (25-75th percentile), and High (> 75th percentile) cohorts. Demographics, comorbidities, intraoperative procedures, perioperative adverse events (AEs), length of hospital stay (LOS), non-routine discharge rates, cost of admission, and 30-day readmission rates were assessed. A logistic multivariate regression analysis was performed to determine the association between inpatient MME consumption and extended LOS., Results: Of the 1042 study patients, 260 (24.9%) had Low-MME consumption, 523 (50.2%) had Medium-MME consumption, and 259 (24.9%) had High-MME consumption. A greater proportion of patients in the High cohort identified as non-Hispanic white (Low: 46.5% vs Medium: 61.4% vs High: 65.3%, p < 0.001), while the proportion of patients reporting any comorbidity did not vary across the cohorts (p = 0.940). The number of post-operative AEs experienced also did not vary across the cohorts (p = 0.629). A greater proportion of patients in the High cohort had an extended LOS (Low: 6.5% vs Medium: 8.6% vs High: 19.7%, p < 0.001), while a greater proportion of patients in the Low cohort had an increased cost of admission (Low: 33.1% vs Medium: 20.3% vs High: 26.6%, p < 0.001). The High cohort had increased 30-day readmission rates relative to the Low and Medium cohorts (Low: 0.8% vs Medium: 0.2% vs High: 1.5%, p = 0.049). Non-routine discharge rates did not vary among the cohorts (p = 0.441). On multivariate analysis, High-MME consumption was significantly associated with extended LOS, while Medium-MME consumption was not [Medium: aOR: 1.48, CI (0.83, 2.74), p = 0.193; High: aOR: 4.43, CI (2.47, 8.31), p < 0.001]., Conclusions: Our study showed that high post-operative-MME consumption was significantly associated with extended LOS in patients undergoing PSF for AIS. In light of these findings, changes to existing protocols that decrease the reliance on opioids for post-operative analgesia are merited to improve patient outcomes and reduce health-care expenditures., (© 2024. The Author(s), under exclusive licence to Scoliosis Research Society.)
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- 2024
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40. Effectiveness and cost-effectiveness of radiofrequency denervation versus placebo for chronic and moderate to severe low back pain: study protocol for the RADICAL randomised controlled trial.
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Ashton KE, Price C, Fleming L, Blom AW, Culliford L, Evans RN, Foster NE, Hollingworth W, Jameson C, Jeynes N, Moore AJ, Orpen N, Palmer C, Reeves BC, Rogers CA, and Wylde V
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- Humans, Double-Blind Method, Pain Measurement, Chronic Pain therapy, Chronic Pain surgery, Quality of Life, Treatment Outcome, Adult, Low Back Pain therapy, Low Back Pain surgery, Low Back Pain economics, Cost-Benefit Analysis, Denervation methods, Denervation economics
- Abstract
Introduction: Low back pain (LBP) is the leading global cause of disability. Patients with moderate to severe LBP who respond positively to a diagnostic medial nerve branch block can be offered radiofrequency denervation (RFD). However, high-quality evidence on the effectiveness of RFD is lacking., Methods and Analysis: RADICAL (RADIofrequenCy denervAtion for Low back pain) is a double-blind, parallel-group, superiority randomised controlled trial. A total of 250 adults listed for RFD will be recruited from approximately 20 National Health Service (NHS) pain and spinal clinics. Recruitment processes will be optimised through qualitative research during a 12-month internal pilot phase. Participants will be randomised in theatre using a 1:1 allocation ratio to RFD or placebo. RFD technique will follow best practice guidelines developed for the trial. Placebo RFD will follow the same protocol, but the electrode tip temperature will not be raised. Participants who do not experience a clinically meaningful improvement in pain 3 months after randomisation will be offered the alternative intervention to the one provided at the outset without disclosing the original allocation. The primary clinical outcome will be pain severity, measured using a pain Numeric Rating Scale, at 3 months after randomisation. Secondary outcomes will be assessed up to 2 years after randomisation and include disability, health-related quality of life, psychological distress, time to pain recovery, satisfaction, adverse events, work outcomes and healthcare utilisation. The primary statistical analyses will be by intention to treat and will follow a prespecified analysis plan. The primary economic evaluation will take an NHS and social services perspective and estimate the discounted cost per quality-adjusted life-year and incremental net benefit of RFD over the 2-year follow-up period., Ethics and Dissemination: Ethics approval was obtained from the London-Fulham Research Ethics Committee (21/LO/0471). Results will be disseminated in open-access publications and plain language summaries., Trial Registration Number: ISRCTN16473239., Competing Interests: Competing interests: All authors received support from the National Institute for Health and Care Research for the project associated with this manuscript, which was paid to their employing institution. No other conflicts were reported., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY. Published by BMJ.)
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- 2024
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41. Stereotactic radiotherapy for neovascular age-related macular degeneration (STAR): a pivotal, randomised, double-masked, sham-controlled device trial.
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Jackson TL, Desai R, Wafa HA, Wang Y, Peacock J, Peto T, Chakravarthy U, Dakin H, Wordsworth S, Lewis C, Clinch P, Ramazzotto L, Neffendorf JE, Lee CN, O'Sullivan JM, and Reeves BC
- Subjects
- Humans, Male, Double-Blind Method, Female, Aged, Middle Aged, Macular Degeneration, Treatment Outcome, Vascular Endothelial Growth Factor A antagonists & inhibitors, Aged, 80 and over, Visual Acuity, Angiogenesis Inhibitors administration & dosage, Angiogenesis Inhibitors therapeutic use, Ranibizumab administration & dosage, Ranibizumab therapeutic use, Radiosurgery methods, Intravitreal Injections
- Abstract
Background: Neovascular age-related macular degeneration (nAMD) is a leading cause of blindness. The first-line therapy is anti-vascular endothelial growth factor (anti-VEGF) agents delivered by intravitreal injection. Ionising radiation mitigates key pathogenic processes underlying nAMD, and therefore has therapeutic potential. STAR aimed to assess whether stereotactic radiotherapy (SRT) reduces the number of anti-VEGF injections required, without sacrificing visual acuity., Methods: This pivotal, randomised, double-masked, sham-controlled trial enrolled participants with pretreated chronic active nAMD from 30 UK hospitals. Participants were randomly allocated in a 2:1 ratio to 16-Gray (Gy) SRT delivered using a robotically controlled device or sham SRT, stratified by treatment centre. Eligible participants were aged 50 years or older and had chronic active nAMD, with at least three previous anti-VEGF injections, including at least one in the last 4 months. Participants and all trial and image reading centre staff were masked to treatment allocation, except one unmasked statistician. The primary outcome was the number of intravitreal ranibizumab injections required over 2 years, tested for superiority (fewer injections). The main secondary outcome was Early Treatment Diabetic Retinopathy Study visual acuity at two years, tested for non-inferiority (five-letter margin). The primary analysis used the intention-to-treat principle, and safety was analysed per-protocol on participants with available data. The study is registered with ClinicalTrials.gov (NCT02243878) and is closed for recruitment., Findings: 411 participants enrolled between Jan 1, 2015, and Dec 27, 2019, and 274 were randomly allocated to the 16-Gy SRT group and 137 to the sham SRT group. 240 (58%) of all participants were female, and 171 (42%) of all participants were male. 241 participants in the 16-Gy SRT group and 118 participants in the sham group were included in the final analysis, and 409 patients were treated and formed the safety population, of whom two patients allocated to sham treatment erroneously received 16-Gy SRT. The SRT group received a mean of 10·7 injections (SD 6·3) over 2 years versus 13·3 injections (5·8) with sham, a reduction of 2·9 injections after adjusting for treatment centre (95% CI -4·2 to -1·6, p<0·0001). The SRT group best-corrected visual acuity change was non-inferior to sham (adjusted mean letter loss difference between groups, -1·7 letters [95% CI -4·2 to 0·8]). Adverse event rates were similar across groups, but reading centre-detected microvascular abnormalities occurred in 77 SRT-treated eyes (35%) and 13 (12%) sham-treated eyes. Overall, eyes with microvascular abnormalities tended to have better best-corrected visual acuity than those without. Fewer ranibizumab injections offset the cost of SRT, saving a mean of £565 per participant (95% CI -332 to 1483)., Interpretation: SRT can reduce ranibizumab treatment burden without compromising vision., Funding: Medical Research Council and National Institute for Health and Care Research Efficacy and Mechanism Evaluation Programme., Competing Interests: Declaration of interests Oraya/Zeiss provided free use of the SRT device at the STAR National Treatment Centres. BCR, TP, YW, HAW, JMO, and JP declare no competing interests. TLJ is a consultant or adviser to 2CTech, Alcon, Dutch Ophthalmic Research Centre, iLumen, Opthea, Outlook Therapeutics, Oxurion, and Regeneron. He has received conference support from Roche, and an advisory board payment from Oraya in 2013. TP has participated in advisory boards for Apellis and received investigator initiated research funds paid to her institution from Boehringen Ingelheim; as well as receiving speakers fees from Heidelberg, Zeiss, and Optos. UC serves on a data monitoring committee for Adverum and is a consultant to Apellis, Boehringer Ingelheim, Isarna, Iveric, and Hoffman La Roche. JEN is an adviser to Solvemed, has received lecture fees from Novartis, and has received conference support from Dutch Ophthalmic Research Centre. HD and SW are financially supported in part by the National Institute for Health and Care Research (NIHR) Oxford Biomedical Research Centre. CNL has undertaken contracting work for Opthea. TLJ, LR, RD, CNL, CL, PC and JEN's NHS employer receives site fees for patients enrolled on commercial retinal trials of AMD and other conditions., (Copyright © 2024 The Author(s). Published by Elsevier Ltd. This is an Open Access article under the CC BY 4.0 license. Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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42. Reduced racial disparities among newborns with intraventricular hemorrhage.
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Sayeed S, Reeves BC, Theriault BC, Hengartner AC, Ahsan N, Sadeghzadeh S, Elsamadicy EA, DiLuna M, and Elsamadicy AA
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- Female, Humans, Infant, Newborn, Male, Black or African American, Cerebral Hemorrhage ethnology, Cerebral Hemorrhage epidemiology, Cerebral Hemorrhage economics, Cerebral Hemorrhage mortality, Cerebral Intraventricular Hemorrhage epidemiology, Healthcare Disparities ethnology, White People, Hispanic or Latino, Racial Groups, Length of Stay statistics & numerical data
- Abstract
Introduction: Intraventricular hemorrhage (IVH) can ensue permanent neurologic dysfunction, morbidity, and mortality. While previous reports have identified disparities based on patient gender or weight, no prior study has assessed how race may influence in neonatal or infantile IVH patients. The aim of this study was to investigate the impact of race on adverse event (AE) rates, length of stay (LOS), and total cost of admission among newborns with IVH., Methods: Using the 2016-2019 National Inpatient Sample database, newborns diagnosed with IVH were identified using ICD-10-CM codes. Patients were stratified based on race. Patient characteristics and inpatient outcomes were assessed. Multivariate logistic regression analyses were used to identify the impact of race on extended LOS and exorbitant cost., Results: Of 1435 patients, 650 were White (45.3%), 270 African American (AA) (18.8%), 300 Hispanic (20.9%), and 215 Other (15.0%). A higher percentage of AA and Other patients than Hispanic and White patients were < 28 days old (p = 0.008). Each of the cohorts had largely similar presenting comorbidities and symptoms, although AA patients did have significantly higher rates of NEC (p < 0.001). There were no observed differences in rates of AEs, rates of mortality, mean LOS, or mean total cost of admission. Similarly, on multivariate analysis, no race was identified as a significant independent predictor of extended LOS or exorbitant cost., Conclusions: Our study found that in newborns with IVH, race is not associated with proxies of poor healthcare outcomes like prolonged LOS or excessive cost. Further studies are needed to validate these findings., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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43. Home-monitoring for neovascular age-related macular degeneration in older adults within the UK: the MONARCH diagnostic accuracy study.
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Hogg RE, Wickens R, O'Connor S, Gidman E, Ward E, Treanor C, Peto T, Burton B, Knox P, Lotery AJ, Sivaprasad S, Donnelly M, Rogers CA, and Reeves BC
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- Humans, United Kingdom, Aged, Male, Female, Aged, 80 and over, Visual Acuity, Technology Assessment, Biomedical, Macular Degeneration diagnosis
- Abstract
Background: Most neovascular age-related macular degeneration treatments involve long-term follow-up of disease activity. Home monitoring would reduce the burden on patients and those they depend on for transport, and release clinic appointments for other patients. The study aimed to evaluate three home-monitoring tests for patients to use to detect active neovascular age-related macular degeneration compared with diagnosing active neovascular age-related macular degeneration by hospital follow-up., Objectives: There were five objectives: Estimate the accuracy of three home-monitoring tests to detect active neovascular age-related macular degeneration. Determine the acceptability of home monitoring to patients and carers and adherence to home monitoring. Explore whether inequalities exist in recruitment, participants' ability to self-test and their adherence to weekly testing during follow-up. Provide pilot data about the accuracy of home monitoring to detect conversion to neovascular age-related macular degeneration in fellow eyes of patients with unilateral neovascular age-related macular degeneration. Describe challenges experienced when implementing home-monitoring tests., Design: Diagnostic test accuracy cohort study, stratified by time since starting treatment., Setting: Six United Kingdom Hospital Eye Service macular clinics (Belfast, Liverpool, Moorfields, James Paget, Southampton, Gloucester)., Participants: Patients with at least one study eye being monitored by hospital follow-up., Reference Standard: Detection of active neovascular age-related macular degeneration by an ophthalmologist at hospital follow-up., Index Tests: KeepSight Journal: paper-based near-vision tests presented as word puzzles. MyVisionTrack®: electronic test, viewed on a tablet device. MultiBit: electronic test, viewed on a tablet device. Participants provided test scores weekly. Raw scores between hospital follow-ups were summarised as averages., Results: Two hundred and ninety-seven patients (mean age 74.9 years) took part. At least one hospital follow-up was available for 317 study eyes, including 9 second eyes that became eligible during follow-up, in 261 participants (1549 complete visits). Median testing frequency was three times/month. Estimated areas under receiver operating curves were < 0.6 for all index tests, and only KeepSight Journal summary score was significantly associated with the lesion activity (odds ratio = 3.48, 95% confidence interval 1.09 to 11.13, p = 0.036). Older age and worse deprivation for home address were associated with lower participation (χ
2 = 50.5 and 24.3, respectively, p < 0.001) but not ability or adherence to self-testing. Areas under receiver operating curves appeared higher for conversion of fellow eyes to neovascular age-related macular degeneration (0.85 for KeepSight Journal) but were estimated with less precision. Almost half of participants called a study helpline, most often due to inability to test electronically., Limitations: Pre-specified sample size not met; participants' difficulties using the devices; electronic tests not always available., Conclusions: No index test provided adequate test accuracy to identify lesion diagnosed as active in follow-up clinics. If used to detect conversion, patients would still need to be monitored at hospital. Associations of older age and worse deprivation with study participation highlight the potential for inequities with such interventions. Provision of reliable electronic testing was challenging., Future Work: Future studies evaluating similar technologies should consider: Independent monitoring with clear stopping rules based on test performance. Deployment of apps on patients' own devices since providing devices did not reduce inequalities in participation and complicated home testing. Alternative methods to summarise multiple scores over the period preceding a follow-up., Trial Registration: This trial is registered as ISRCTN79058224., Funding: This award was funded by the National Institute of Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 15/97/02) and is published in full in Health Technology Assessment ; Vol. 28, No. 32. See the NIHR Funding and Awards website for further award information.- Published
- 2024
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44. Impact of a quality improvement initiative and monthly multidisciplinary meetings on outcomes after posterior spinal fusion for adolescent idiopathic scoliosis.
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Hengartner AC, Elsamadicy AA, Jonnalagadda A, Craft S, Sherman JJZ, Reeves BC, Fernandez T, Hobbs J, Koo AB, DiLuna M, and Tuason DA
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- Humans, Adolescent, Female, Male, Retrospective Studies, Child, Treatment Outcome, Length of Stay, Patient Care Team organization & administration, Postoperative Complications epidemiology, Enhanced Recovery After Surgery, Scoliosis surgery, Spinal Fusion methods, Quality Improvement
- Abstract
Introduction: Several studies have demonstrated the benefits of enhanced recovery after surgery (ERAS) protocols for patients with adolescent idiopathic scoliosis (AIS) undergoing posterior spinal instrumented fusion (PSIF). However, there are relatively few studies investigating the effect of regular multidisciplinary team meetings on level selection, surgical performance parameters, and patient outcomes after PSIF for AIS. The aim of this study was to assess changes in intra- and postoperative outcomes following multidisciplinary team meeting implementation for patients undergoing PSIF for AIS., Methods: The medical records of 96 adolescents (10 to 18 years old) diagnosed with AIS and undergoing PSIF at a major academic institution from 2017 to 2022 were retrospectively reviewed. A quality improvement (QI) initiative was implemented in February 2020, including institution of monthly multidisciplinary conferences focusing on preoperative indications, level selection, postoperative review of surgical performance parameters for previous cases, and discussion and optimization of postoperative ambulation and pain control protocols. Patients were placed into "Pre-QI" (treated pre-February 2020) and "Post-QI" (treated post-February 2020) cohorts. Patient demographics, comorbidities, deformity characteristics, intraoperative variables, ambulation status, postoperative complications, length of stay (LOS), and unplanned readmission rates were assessed., Results: Of the 96 study patients, 44 (45.8%) were in the Pre-QI cohort, and 52 (54.2%) were in the Post-QI cohort. Mean major curve was not significantly different between the two cohorts (Pre-QI: 58.0 ± 7.3° vs Post-QI: 57.9 ± 14.5°, p = 0.169). The Pre-QI cohort had a greater mean minor curve degree (Pre-QI: 42.7 ± 11.8° vs Post-QI: 36.8 ± 12.4, p = 0.008). The Pre-QI cohort had significantly greater mean spinal levels fused (Pre-QI: 11.7 ± 1.7 vs Post-QI: 10.4 ± 2.6, p = 0.009), significantly greater mean estimated blood loss (Pre-QI: 1063.6 ± 631.5 ml vs. Post-QI: 415.8 ± 189.9 ml, p < 0.001), significantly greater mean operative time normalized to levels fused (Pre-QI: 0.6 ± 0.1 h/level fused vs Post-QI: 0.4 ± 0.1 h/level fused, p < 0.001), and a significantly greater proportion of patients with intraoperative drain placement (Pre-QI: 93.2% vs Post-QI: 5.8%, p < 0.001). The Post-QI cohort had significantly shorter time to postoperative ambulation (Pre-QI: 2.1 ± 0.9 days vs Post-QI: 1.3 ± 0.5 days, p < 0.001). A significantly greater proportion of patients in the Pre-QI cohort developed any postoperative complication (Pre-QI: 72.7% vs Post-QI: 34.6%, p < 0.001), and mean LOS was significantly greater among Pre-QI patients (Pre-QI: 4.5 ± 1.1 days vs Post-QI: 3.2 ± 0.8 days, p < 0.001). Discharge disposition (p = 0.758) and 30-day unplanned readmissions (p = 0.207) were similar between the cohorts., Conclusions: Our findings suggest that monthly multidisciplinary pediatric spine team meetings may improve patient care. Further studies exploring the incorporation of QI implementation with frequent multidisciplinary team meetings into existing ERAS protocols are merited., (© 2024. The Author(s), under exclusive licence to Scoliosis Research Society.)
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- 2024
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45. Conventional versus minimally invasive extra-corporeal circulation in patients undergoing cardiac surgery: A randomized controlled trial (COMICS).
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Angelini GD, Reeves BC, Culliford LA, Maishman R, Rogers CA, Anastasiadis K, Antonitsis P, Argiriadou H, Carrel T, Keller D, Liebold A, Ashkaniani F, El-Essawi A, Breitenbach I, Lloyd C, Bennett M, Cale A, Gunaydin S, Gunertem E, Oueida F, Yassin IM, Serrick C, Murkin JM, Rao V, Moscarelli M, Condello I, Punjabi P, Rajakaruna C, Deliopoulos A, Bone D, Lansdown W, Moorjani N, and Dennis S
- Abstract
Introduction: The trial hypothesized that minimally invasive extra-corporeal circulation (MiECC) reduces the risk of serious adverse events (SAEs) after cardiac surgery operations requiring extra-corporeal circulation without circulatory arrest., Methods: This is a multicentre, international randomized controlled trial across fourteen cardiac surgery centres including patients aged ≥18 and <85 years undergoing elective or urgent isolated coronary artery bypass grafting (CABG), isolated aortic valve replacement (AVR) surgery, or CABG + AVR surgery. Participants were randomized to MiECC or conventional extra-corporeal circulation (CECC), stratified by centre and operation. The primary outcome was a composite of 12 post-operative SAEs up to 30 days after surgery, the risk of which MiECC was hypothesized to reduce. Secondary outcomes comprised: other SAEs; all-cause mortality; transfusion of blood products; time to discharge from intensive care and hospital; health-related quality-of-life. Analyses were performed on a modified intention-to-treat basis., Results: The trial terminated early due to the COVID-19 pandemic; 1071 participants (896 isolated CABG, 97 isolated AVR, 69 CABG + AVR) with median age 66 years and median EuroSCORE II 1.24 were randomized (535 to MiECC, 536 to CECC). Twenty-six participants withdrew after randomization, 22 before and four after intervention. Fifty of 517 (9.7%) randomized to MiECC and 69/522 (13.2%) randomized to CECC group experienced the primary outcome (risk ratio = 0.732, 95% confidence interval (95% CI) = 0.556 to 0.962, p = 0.025). The risk of any SAE not contributing to the primary outcome was similarly reduced (risk ratio = 0.791, 95% CI 0.530 to 1.179, p = 0.250)., Conclusions: MiECC reduces the relative risk of primary outcome events by about 25%. The risk of other SAEs was similarly reduced. Because the trial terminated early without achieving the target sample size, these potential benefits of MiECC are uncertain.
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- 2024
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46. Home-Monitoring Vision Tests to Detect Active Neovascular Age-Related Macular Degeneration.
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Hogg RE, Sivaprasad S, Wickens R, O'Connor S, Gidman E, Ward E, Treanor C, Peto T, Burton BJL, Knox P, Lotery AJ, Donnelly M, Rogers CA, and Reeves BC
- Subjects
- Humans, Male, Female, Aged, Aged, 80 and over, ROC Curve, Reproducibility of Results, Mobile Applications, Follow-Up Studies, Angiogenesis Inhibitors therapeutic use, Angiogenesis Inhibitors administration & dosage, Tomography, Optical Coherence, Visual Acuity physiology, Vision Tests instrumentation, Wet Macular Degeneration diagnosis, Wet Macular Degeneration drug therapy, Wet Macular Degeneration physiopathology
- Abstract
Importance: Most neovascular age-related macular degeneration (nAMD) treatments involve long-term follow-up of disease activity. Home-monitoring would reduce the burden on patients and their caregivers and release clinic capacity., Objective: To evaluate 3 vision home-monitoring tests for patients to use to detect active nAMD compared with diagnosing active nAMD at hospital follow-up during the after-treatment monitoring phase., Design, Setting, and Participants: This was a diagnostic test accuracy study wherein the reference standard was detection of active nAMD by an ophthalmologist at hospital follow-up. The 3 home-monitoring tests evaluated included the following: (1) the KeepSight Journal (KSJ [International Macular and Retinal Foundation]), which contains paper-based near-vision tests presented as word puzzles, (2) the MyVisionTrack (mVT [Genentech]) vision-monitoring mobile app, viewed on an Apple mobile operating system-based device, and (3) the MultiBit (MBT [Visumetrics]) app, viewed on an Apple mobile operating system-based device. Participants were asked to test weekly; mVT and MBT scores were transmitted automatically, and KSJ scores were returned to the research office every 6 months. Raw scores between hospital follow-ups were summarized as averages. Patients were recruited from 6 UK hospital eye clinics and were 50 years and older with at least 1 eye first treated for active nAMD for at least 6 months or longer to a maximum of 42 months before approach. Participants were stratified by time since starting treatment. Study data were analyzed from May to September 2021., Exposures: The KSJ, mVT, and MBT were compared with the reference standard (in-hospital ophthalmologist examination)., Main Outcomes and Measures: Estimated area under receiver operating characteristic curve (AUROC). The study had 90% power to detect a difference of 0.06, or 80% power to detect a difference of 0.05, if the AUROC for 2 tests was 0.75., Results: A total of 297 patients (mean [SD] age, 74.9 [6.6] years; 174 female [58.6%]) were included in the study. At least 1 hospital follow-up was available for 312 study eyes in 259 participants (1549 complete visits). Median (IQR) home-monitoring testing frequency was 3 (1-4) times per month. Estimated AUROC was less than 0.6 for all home-monitoring tests, and only the KSJ summary score was associated with lesion activity (odds ratio, 3.48; 95% CI, 1.09-11.13; P = .04)., Conclusions and Relevance: Results suggest that no home-monitoring vision test evaluated provided satisfactory diagnostic accuracy to identify active nAMD diagnosed in hospital eye service follow-up clinics. Implementing any of these evaluated tests, with ophthalmologists only reviewing test positives, would mean most active lesions were missed, risking unnecessary sight loss.
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- 2024
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47. Primary intraosseous xanthoma of the frontal bone in a child: illustrative case.
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Madsen PJ, Kundishora AJ, Reeves BC, Coyle AM, Nagasawa DT, Wong JM, Yang I, and Tucker AM
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Background: Skull lesions are a common finding in children, with dermoid cysts and eosinophilic granulomas observed most frequently. However, primary intraosseous xanthomas of the calvaria, which are lytic, expansile lesions that develop without underlying hyperlipidemic disease, are rare in children, with only one prior case reported., Observations: The authors describe the case of a healthy 6-year-old male who presented with a 2-month history of an enlarging midline skull mass that developed after a recent minor trauma. Imaging showed a full-thickness, lytic frontal bone lesion with an aggressive appearance and heterogeneous contrast enhancement. The patient underwent gross-total resection of the lesion with placement of a mesh cranioplasty. Histopathology revealed a primary intraosseous xanthoma. The patient was discharged on postoperative day 2 and required no further treatment at the 1-month follow-up., Lessons: This is the first reported case of a primary intraosseous xanthoma in the frontal bone of a pediatric patient. It emphasizes the need to include primary xanthomas in the differential diagnosis for pediatric skull lesions, particularly when the lesion has an aggressive radiographic appearance or the patient has a history of focal trauma. Furthermore, our findings indicate that resection, together with subsequent monitoring for lesion reccurrence, is an adequate first-line treatment.
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- 2024
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48. Utilization of Machine Learning to Model Important Features of 30-day Readmissions following Surgery for Metastatic Spinal Column Tumors: The Influence of Frailty.
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Elsamadicy AA, Koo AB, Reeves BC, Cross JL, Hersh A, Hengartner AC, Karhade AV, Pennington Z, Akinduro OO, Larry Lo SF, Gokaslan ZL, Shin JH, Mendel E, and Sciubba DM
- Abstract
Study Design: Retrospective cohort study., Objective: The aim of this study was to determine the relative importance and predicative power of the Hospital Frailty Risk Score (HFRS) on unplanned 30-day readmission after surgical intervention for metastatic spinal column tumors., Methods: All adult patients undergoing surgery for metastatic spinal column tumor were identified in the Nationwide Readmission Database from the years 2016 to 2018. Patients were categorized into 3 cohorts based on the criteria of the HFRS: Low(<5), Intermediate(5-14.9), and High(≥ 15). Random Forest (RF) classification was used to construct predictive models for 30-day patient readmission. Model performance was examined using the area under the receiver operating curve (AUC), and the Mean Decrease Gini (MDG) metric was used to quantify and rank features by relative importance., Results: There were 4346 patients included. The proportion of patients who required any readmission were higher among the Intermediate and High frailty cohorts when compared to the Low frailty cohort ( Low:33.9% vs. Intermediate:39.3% vs. High:39.2%, P < .001 ). An RF classifier was trained to predict 30-day readmission on all features (AUC = .60) and architecturally equivalent model trained using only ten features with highest MDG (AUC = .59). Both models found frailty to have the highest importance in predicting risk of readmission. On multivariate regression analysis, Intermediate frailty [ OR:1.32, CI(1.06,1.64), P = .012 ] was found to be an independent predictor of unplanned 30-day readmission., Conclusion: Our study utilizes machine learning approaches and predictive modeling to identify frailty as a significant risk-factor that contributes to unplanned 30-day readmission after spine surgery for metastatic spinal column metastases., 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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- 2024
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49. Temporal and Spatial Comparison of Mercury Bioaccumulation in the Lower Trophic Levels of a Post-glacial Lake Food Web.
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Reeves BC, Slife CC, and Paterson G
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- Animals, Bioaccumulation, Lakes, Ecology, Zooplankton, Food Chain, Mercury
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Total mercury (Hg) concentrations and carbon (δ
13 C) and nitrogen (δ15 N) stable isotopes were quantified among aquatic invertebrate and sediment samples collected from Keuka Lake in New York's Finger Lakes region to evaluate temporal and spatial variability in Hg bioaccumulation and trophic ecology among these lower trophic levels. Hg concentrations ranged from 6.3 to 158.8 ng/g (dry wt) across dreissenid mussel, zooplankton, and juvenile (< 10 mm) and adult (≥ 10 mm) mysid shrimp (Mysis diluviana) samples. Hg concentrations were higher in samples collected from the western basin in 2015 relative to those for samples collected from this basin in 2022 (p < 0.001). While no specific mechanisms could be identified to explain this difference, higher δ15 N values for zooplankton collected in 2015 support conclusions regarding the role of zooplankton trophic status on Hg concentrations in these populations. Spatial patterns in Hg concentrations were of generally low variability among samples collected from the lake's east, west and south basins in 2022. Trophic positions as inferred by δ15 N were represented by adult mysids > juvenile mysids > large zooplankton (≥ 500 µm) > dreissenid mussels ≥ small zooplankton (64-500 µm). Differences were evident among the regression slopes describing the relationships between sample Hg concentrations and δ15 N values across the lake's three basins (p = 0.028). However, this was primarily attributed to high δ15 N values measured in dreissenid mussels collected from the south basin in 2022. Biota sediment accumulation factors ranged from 0.2 to 2.3 and were highest for adult M. diluviana but mysid δ13 C values generally supported a pelagic pathway of Hg exposure relative to benthic sediments. Overall, these results provide additional support regarding the contributions of lower trophic levels to Hg biomagnification in aquatic food-webs., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)- Published
- 2024
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50. A novel SMARCC1 BAFopathy implicates neural progenitor epigenetic dysregulation in human hydrocephalus.
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Singh AK, Allington G, Viviano S, McGee S, Kiziltug E, Ma S, Zhao S, Mekbib KY, Shohfi JP, Duy PQ, DeSpenza T Jr, Furey CG, Reeves BC, Smith H, Sousa AMM, Cherskov A, Allocco A, Nelson-Williams C, Haider S, Rizvi SRA, Alper SL, Sestan N, Shimelis H, Walsh LK, Lifton RP, Moreno-De-Luca A, Jin SC, Kruszka P, Deniz E, and Kahle KT
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- Child, Humans, Transcription Factors genetics, Epigenesis, Genetic, Eye Proteins genetics, Intracellular Signaling Peptides and Proteins genetics, Autism Spectrum Disorder genetics, Hydrocephalus diagnostic imaging, Hydrocephalus genetics, Cerebral Aqueduct abnormalities, Genetic Diseases, X-Linked
- Abstract
Hydrocephalus, characterized by cerebral ventriculomegaly, is the most common disorder requiring brain surgery in children. Recent studies have implicated SMARCC1, a component of the BRG1-associated factor (BAF) chromatin remodelling complex, as a candidate congenital hydrocephalus gene. However, SMARCC1 variants have not been systematically examined in a large patient cohort or conclusively linked with a human syndrome. Moreover, congenital hydrocephalus-associated SMARCC1 variants have not been functionally validated or mechanistically studied in vivo. Here, we aimed to assess the prevalence of SMARCC1 variants in an expanded patient cohort, describe associated clinical and radiographic phenotypes, and assess the impact of Smarcc1 depletion in a novel Xenopus tropicalis model of congenital hydrocephalus. To do this, we performed a genetic association study using whole-exome sequencing from a cohort consisting of 2697 total ventriculomegalic trios, including patients with neurosurgically-treated congenital hydrocephalus, that total 8091 exomes collected over 7 years (2016-23). A comparison control cohort consisted of 1798 exomes from unaffected siblings of patients with autism spectrum disorder and their unaffected parents were sourced from the Simons Simplex Collection. Enrichment and impact on protein structure were assessed in identified variants. Effects on the human fetal brain transcriptome were examined with RNA-sequencing and Smarcc1 knockdowns were generated in Xenopus and studied using optical coherence tomography imaging, in situ hybridization and immunofluorescence. SMARCC1 surpassed genome-wide significance thresholds, yielding six rare, protein-altering de novo variants localized to highly conserved residues in key functional domains. Patients exhibited hydrocephalus with aqueductal stenosis; corpus callosum abnormalities, developmental delay, and cardiac defects were also common. Xenopus knockdowns recapitulated both aqueductal stenosis and cardiac defects and were rescued by wild-type but not patient-specific variant SMARCC1. Hydrocephalic SMARCC1-variant human fetal brain and Smarcc1-variant Xenopus brain exhibited a similarly altered expression of key genes linked to midgestational neurogenesis, including the transcription factors NEUROD2 and MAB21L2. These results suggest de novo variants in SMARCC1 cause a novel human BAFopathy we term 'SMARCC1-associated developmental dysgenesis syndrome', characterized by variable presence of cerebral ventriculomegaly, aqueductal stenosis, developmental delay and a variety of structural brain or cardiac defects. These data underscore the importance of SMARCC1 and the BAF chromatin remodelling complex for human brain morphogenesis and provide evidence for a 'neural stem cell' paradigm of congenital hydrocephalus pathogenesis. These results highlight utility of trio-based whole-exome sequencing for identifying pathogenic variants in sporadic congenital structural brain disorders and suggest whole-exome sequencing may be a valuable adjunct in clinical management of congenital hydrocephalus patients., (© The Author(s) 2023. Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
- Published
- 2024
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