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McKechnie T, Kazi T, Wang A, Zhang S, Thabane A, Nanji K, Doumouras AG, Eskicioglu C, Thabane L, Parpia S, Bhandari M. REporting quality of PilOt randomised controlled trials in surgery (REPORTS): a methodological survey protocol. BMJ Open 2024; 14:e085293. [PMID: 38658008 PMCID: PMC11043721 DOI: 10.1136/bmjopen-2024-085293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 03/15/2024] [Indexed: 04/26/2024] Open
Abstract
INTRODUCTION The aim of this methodological review is to evaluate the completeness of reporting of surgical pilot and feasibility randomised trials as per the Consolidated Standards of Reporting Trials (CONSORT) extension to randomised pilot and feasibility trials. Moreover, we aim to assess for the presence of spin reporting and inconsistency between abstract and main text reporting in surgical pilot and feasibility randomised trials. METHODS AND ANALYSIS A comprehensive, electronic search strategy will be used to identify studies indexed in Medline, Embase and Cochrane Central Register of Controlled Trials (CENTRAL) databases. Studies will be included if they are pilot or feasibility randomised trials of surgical interventions. The primary outcome will be overall CONSORT statement extension to randomised pilot and feasibility trials checklist completeness. This will be defined as trials reporting each of the 40 items in the CONSORT statement extension to randomised pilot and feasibility trials checklist. Secondary outcomes will include the reporting of individual studies as per the CONSORT extension to randomised pilot and feasibility trials, the use of spin reporting strategies, trial factors associated with reporting quality and spin strategy use, and consistency between abstract and main text reporting. Poisson and logistic regressions will be performed to explore the association between trial factors and completeness of reporting as measured by the number of reported CONSORT items. ETHICS AND DISSEMINATION This is a methodological survey that has been registered a priori on the International Prospective Register for Systematic Reviews (PROSPERO) (CRD42023475512). Local ethics approval is not required. We plan to disseminate study results through peer-reviewed publication and conference presentations.
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Affiliation(s)
- Tyler McKechnie
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Tania Kazi
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Austine Wang
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Sophia Zhang
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Alex Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Keean Nanji
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Biostatistics Unit, St Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada
- Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa
| | - Sameer Parpia
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
- Oncology, McMaster University, Hamilton, Ontario, Canada
| | - Mohit Bhandari
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
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Lee Y, Anvari S, Padoan A, McKechnie T, Park L, Doumouras AG, Eskicioglu C, Hong D. Financial toxicity among patients undergoing resectional surgery for inflammatory bowel disease in the United States. Colorectal Dis 2024; 26:692-701. [PMID: 38353528 DOI: 10.1111/codi.16903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 07/11/2023] [Accepted: 01/21/2024] [Indexed: 05/02/2024]
Abstract
AIM Financial toxicity describes the financial burden and distress that patients experience due to medical treatment. Financial toxicity has yet to be characterized among patients with inflammatory bowel disease (IBD) undergoing surgical management of their disease. This study investigated the risk of financial toxicity associated with undergoing surgery for IBD. METHODS This study used a retrospective analysis using the National Inpatient Sample from 2015 to 2019. Adult patients who underwent IBD-related surgery were identified using the International Classification of Diseases (10th Revision) diagnostic and procedure codes and stratified into privately insured and uninsured groups. The primary outcome was risk of financial toxicity, defined as hospital admission charges that constituted 40% or more of patient's post-subsistence income. Secondary outcomes included total hospital admission cost and predictors of financial toxicity. RESULTS The analytical cohort consisted of 6412 privately insured and 3694 uninsured patients. Overall median hospital charges were $21 628 (interquartile range $14 758-$35 386). Risk of financial toxicity was 86.5% among uninsured patients and 0% among insured patients. Predictors of financial toxicity included emergency admission, being in the lowest residential income quartile and having ulcerative colitis (compared to Crohn's disease). Additional predictors were being of Black race or male sex. CONCLUSION Financial toxicity is a serious consequence of IBD-related surgery among uninsured patients. Given the pervasive nature of this consequence, future steps to support uninsured patients receiving surgery, in particular emergency surgery, related to their IBD are needed to protect this group from financial risk.
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Affiliation(s)
- Yung Lee
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts, USA
| | - Sama Anvari
- Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Adelia Padoan
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Tyler McKechnie
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Lily Park
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of Gastroenterology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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McKechnie T, Yang S, Wu K, Sharma S, Lee Y, Park LJ, Passos EM, Doumouras AG, Hong D, Parpia S, Bhandari M, Eskicioglu C. Fragility of Statistically Significant Outcomes in Colonic Diverticular Disease Randomized Trials: A Systematic Review. Dis Colon Rectum 2024; 67:414-426. [PMID: 37889999 DOI: 10.1097/dcr.0000000000003014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/29/2023]
Abstract
BACKGROUND The p value has been criticized as an oversimplified determination of whether a treatment effect exists. One alternative is the fragility index. It is a representation of the minimum number of nonevents that would need to be converted to events to increase the p value above 0.05. OBJECTIVE To determine the fragility index of randomized controlled trials assessing the efficacy of interventions for patients with diverticular disease since 2010 to assess the robustness of current evidence. DESIGN MEDLINE, Embase, and Cochrane Central Register of Controlled Trials were searched from inception to August 2022. SETTINGS Articles were eligible for inclusion if they were randomized trials conducted between 2010 and 2022 with parallel, superiority designs evaluating interventions in patients with diverticular disease. Only randomized trials with dichotomous primary outcomes with an associated p value of <0.05 were considered for inclusion. PARTICIPANTS Any surgical or medical intervention for patients with diverticular disease. MAIN OUTCOME MEASURES The fragility index was determined by adding events and subtracting nonevents from the groups with the smaller number of events. Events were added until the p value exceeded 0.05. The smallest number of events required was considered the fragility index. RESULTS After screening 1271 citations, 15 randomized trials met the inclusion criteria. Nine of the studies evaluated surgical interventions and 6 evaluated medical interventions. The mean number of patients randomly assigned and lost to follow-up per randomized controlled trial was 92 (SD 35.3) and 9 (SD 11.4), respectively. The median fragility index was 1 (range, 0-5). The fragility indices for the included studies did not correlate significantly with any study characteristics. LIMITATIONS Small sample, heterogeneity, and lack of inclusion of studies with continuous outcomes. CONCLUSIONS The randomized trials evaluating surgical and medical interventions for diverticular disease are not robust. Changing a single-outcome event in most studies was sufficient to make a statistically significant study finding not significant. See Video Abstract . FRAGILIDAD DE LOS RESULTADOS ESTADSTICAMENTE SIGNIFICATIVOS EN ENSAYOS ALEATORIOS DE ENFERMEDAD DIVERTICULAR DEL COLON UNA REVISIN SISTEMTICA ANTECEDENTES:El valor p ha sido criticado por una determinación demasiado simplificada de si existe un efecto del tratamiento. Una alternativa es el Índice de Fragilidad. Es una representación del número mínimo de no eventos que deberían convertirse en eventos para aumentar el valor p por encima de 0,05.OBJETIVO:Determinar el IF de ensayos controlados aleatorios que evalúan la eficacia de las intervenciones para pacientes con enfermedad diverticular desde 2010 para evaluar la solidez de la evidencia actual.FUENTES DE DATOS:Se realizaron búsquedas en MEDLINE, Embase y CENTRAL desde el inicio hasta agosto de 2022.SELECCIÓN DE ESTUDIOS:Los artículos eran elegibles para su inclusión si eran ensayos aleatorizados realizados entre 2010 y 2022 con diseños paralelos de superioridad que evaluaran intervenciones en pacientes con enfermedad diverticular. Sólo se consideraron para su inclusión los ensayos aleatorizados con resultados primarios dicotómicos con un valor de p asociado menor que 0,05.INTERVENCIÓNES:Cualquier intervención quirúrgica o médica para pacientes con enfermedad diverticular.PRINCIPALES MEDIDAS DE VALORACIÓN:El índice de fragilidad se determinó sumando eventos y restando no eventos de los grupos con el menor número de eventos. Se agregaron eventos hasta que el valor p superó 0,05. El menor número de eventos requeridos se consideró índice de fragilidad.RESULTADOS:Después de examinar 1271 citas, 15 ensayos aleatorios cumplieron los criterios de inclusión. Nueve de los estudios evaluaron intervenciones quirúrgicas y seis evaluaron intervenciones médicas. El número medio de pacientes aleatorizados y perdidos durante el seguimiento por ECA fue 92 (DE 35,3) y 9 (DE 11,4), respectivamente. La mediana del índice de fragilidad fue 1 (rango: 0-5). Los índices de fragilidad de los estudios incluidos no se correlacionaron significativamente con ninguna característica del estudio.LIMITACIONES:Muestra pequeña, heterogeneidad y falta de inclusión de estudios con resultados continuos.CONCLUSIONES:Los ensayos aleatorios que evalúan las intervenciones quirúrgicas y médicas para la enfermedad diverticular no son sólidos. Cambiar un solo evento de resultado en la mayoría de los estudios fue suficiente para que un hallazgo estadísticamente significativo del estudio no fuera significativo. (Traducción- Dr. Ingrid Melo ).
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Affiliation(s)
- Tyler McKechnie
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Shuling Yang
- Faculty of Health Sciences, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Kathy Wu
- Faculty of Health Sciences, Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Sahil Sharma
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Yung Lee
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Lily J Park
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Edward M Passos
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada
| | - Sameer Parpia
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Mohit Bhandari
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada
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Gunka B, Mackenzie D, Hughes T, Sardo L, Bayadinova J, Siegal DM, Tseng EK, Doumouras AG, Mithoowani S. Pharmacokinetics of direct oral anticoagulants after bariatric surgery: A retrospective cohort study. Thromb Res 2024; 235:15-17. [PMID: 38266535 DOI: 10.1016/j.thromres.2024.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 01/01/2024] [Accepted: 01/08/2024] [Indexed: 01/26/2024]
Affiliation(s)
- Barbara Gunka
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | | | - Laurie Sardo
- McMaster University, Hamilton, Ontario, Canada; St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | | | - Deborah M Siegal
- Department of Medicine, University of Ottawa, Ontario, Canada; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ontario, Canada
| | - Eric K Tseng
- Department of Medicine, University of Toronto, Canada; Division of Hematology/Oncology, St. Michael's Hospital, Unity Health Toronto, Toronto, Canada
| | - Aristithes G Doumouras
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Siraj Mithoowani
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
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Lee Y, Kazi T, Dang J, Kroh M, Doumouras AG, Hong D. Financial toxicity risk among patients with gastric banding complications in the United States: analysis of the National Inpatient Sample. Surg Obes Relat Dis 2023; 19:1405-1414. [PMID: 37550162 DOI: 10.1016/j.soard.2023.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/25/2023] [Accepted: 07/04/2023] [Indexed: 08/09/2023]
Abstract
BACKGROUND Laparoscopic adjustable gastric banding (AGB) was historically among the most performed bariatric procedures but has fallen out of favor in recent years due to poor long-term weight loss and high revisional surgery rates. Significant financial hardship of medical care, known as "financial toxicity," can occur from experiencing unexpected complications of AGB. OBJECTIVE To investigate the risk of financial toxicity among patients being admitted for AGB complications. SETTING United States. METHODS All uninsured and privately-insured patients who were admitted for AGB complications were identified from the National Inpatient Sample 2015-2019. Publicly available government data (U.S. Census Bureau, Bureau of Labor, The Centers for Medicare and Medicaid Services) were utilized to estimate patient income, food expenditures, and average maximum out-of-pocket expenditures. Financial toxicity was defined as total admission cost from AGB complications ≥40% of postsubsistence income. RESULTS Among 28,005 patients, 66% patients had private insurance and 44% patients were uninsured. Median total admission cost was $12,443 (interquartile range $7959-$19,859) and $15,182 for those who received revisional bariatric surgery. Approximately 55% of the uninsured patients and 1% of insured patients were at risk of financial toxicity after admission for banding-related complications. Patients who had an emergency admission, revisional surgery, or postoperative intensive care unit admission were more likely to experience financial catastrophe following admission (P < .01). CONCLUSIONS About 1 in 2 uninsured patients admitted for AGB-related complications were at risk of financial toxicity. In addition to surgical risks, providers should consider the potential financial consequences of AGB when counselling patients on their choice of surgery.
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Affiliation(s)
- Yung Lee
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada; Harvard T.H. Chan School of Public Health, Harvard University, Boston, Massachusetts
| | - Tania Kazi
- Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Jerry Dang
- Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, Ohio
| | - Matthew Kroh
- Digestive Disease and Surgery Institute, Cleveland Clinic, Cleveland, Ohio
| | | | - Dennis Hong
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.
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Doumouras AG, Lovrics O, Paterson JM, Sutradhar R, Paszat L, Sivapathasundaram B, Tarride JE, Anvari M. Residual Risk of Breast Cancer After Bariatric Surgery. JAMA Surg 2023; 158:634-641. [PMID: 37043196 PMCID: PMC10099105 DOI: 10.1001/jamasurg.2023.0530] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/04/2022] [Indexed: 04/13/2023]
Abstract
Importance Excess adiposity confers higher risk of breast cancer for women. For women who have lost substantial weight, it is unclear whether previous obesity confers residual increased baseline risk of breast cancer compared with peers without obesity. Objectives To determine whether there is a residual risk of breast cancer due to prior obesity among patients who undergo bariatric surgery. Design, Setting, and Participants Retrospective matched cohort study of 69 260 women with index date between January 1, 2010, and December 31, 2016. Patients were followed up for 5 years after bariatric surgery or index date. Population-based clinical and administrative data from multiple databases in Ontario, Canada, were used to match a cohort of women who underwent bariatric surgery for obesity (baseline body mass index [BMI] ≥35 with comorbid conditions or BMI ≥40) to women without a history of bariatric surgery according to age and breast cancer screening history. Nonsurgical controls were divided into 4 BMI categories (<25, 25-29, 30-34, and ≥35). Data were analyzed on October 21, 2021. Exposures Weight loss via bariatric surgery. Main Outcomes and Measures Residual hazard of breast cancer after washout periods of 1, 2, and 5 years. Comparisons were made between the surgical and nonsurgical cohorts overall and within each of the BMI subgroups. Results In total, 69 260 women were included in the analysis, with 13 852 women in each of the 5 study cohorts. The mean (SD) age was 45.1 (10.9) years. In the postsurgical cohort vs the overall nonsurgical cohort (n = 55 408), there was an increased hazard for incident breast cancer in the nonsurgical group after washout periods of 1 year (hazard ratio [HR], 1.40 [95% CI, 1.18-1.67]), 2 years (HR, 1.31 [95% CI, 1.12-1.53]), and 5 years (HR, 1.38 [95% CI, 1.21-1.58]). When the postsurgical cohort was compared with the nonsurgical cohort with BMI less than 25, the hazard of incident breast cancer was not significantly different regardless of the washout period, whereas there was a reduced hazard for incident breast cancer among postsurgical patients compared with nonsurgical patients in all high BMI categories (BMI ≥25). Conclusions and Relevance Findings suggest that bariatric surgery was associated with a reduced risk of developing breast cancer for women with prior obesity equivalent to that of a woman with a BMI less than 25 and a lower risk when compared with all groups with BMI greater than or equal to 25.
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Affiliation(s)
- Aristithes G. Doumouras
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
- ICES, Toronto, Ontario, Canada
- Department of Clinical Epidemiology and Biostatistics, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | - Olivia Lovrics
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
| | - J. Michael Paterson
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
- Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Rinku Sutradhar
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Lawrence Paszat
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | | | - Jean-Eric Tarride
- ICES, Toronto, Ontario, Canada
- Department of Clinical Epidemiology and Biostatistics, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
- Programs for Assessment of Technology in Health Research Institute, St Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Mehran Anvari
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
- ICES, Toronto, Ontario, Canada
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Daniel R, McKechnie T, Kruse CC, Levin M, Lee Y, Doumouras AG, Hong D, Eskicioglu C. Video-based coaching for surgical residents: a systematic review and meta-analysis. Surg Endosc 2023; 37:1429-1439. [PMID: 35739431 PMCID: PMC9225812 DOI: 10.1007/s00464-022-09379-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 06/03/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND Video-based coaching (VBC) is used to supplement current teaching methods in surgical education and may be useful in competency-based frameworks. Whether VBC can effectively improve surgical skill in surgical residents has yet to be fully elucidated. The objective of this study is to compare surgical residents receiving and not receiving VBC in terms of technical surgical skill. METHODS The following databases were searched from database inception to October 2021: Medline, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), and PubMed. Articles were included if they were randomized controlled trials (RCTs) comparing surgical residents receiving and not receiving VBC. The primary outcome, as defined prior to data collection, was change in objective measures of technical surgical skill following implementation of either VBC or control. A pairwise meta-analyses using inverse variance random effects was performed. Standardized mean differences (SMD) were used as the primary outcome measure to account for differences in objective surgical skill evaluation tools. RESULTS From 2734 citations, 11 RCTs with 157 residents receiving VBC and 141 residents receiving standard surgical teaching without VBC were included. There was no significant difference in post-coaching scores on objective surgical skill evaluation tools between groups (SMD 0.53, 95% CI 0.00 to 1.01, p = 0.05, I2 = 74%). The improvement in scores pre- and post-intervention was significantly greater in residents receiving VBC compared to those not receiving VBC (SMD 1.62, 95% CI 0.62 to 2.63, p = 0.002, I2 = 85%). These results were unchanged with leave-one-out sensitivity analysis and subgroup analysis according to operative setting. CONCLUSION VBC can improve objective surgical skills in surgical residents of various levels. The benefit may be most substantial for trainees with lower baseline levels of objective skill. Further studies are required to determine the impact of VBC on competency-based frameworks.
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Affiliation(s)
- Ryan Daniel
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON Canada
| | - Tyler McKechnie
- Division of General Surgery, Department of Surgery, St. Joseph’s Healthcare Hamilton, McMaster University, 50 Charlton Avenue East, Hamilton, ON L8N 4A6 Canada
| | - Colin C. Kruse
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON Canada
| | - Marc Levin
- Division of Head and Neck, Otolaryngology Surgery, Department of Surgery, University of Toronto, Toronto, ON Canada
| | - Yung Lee
- Division of General Surgery, Department of Surgery, St. Joseph’s Healthcare Hamilton, McMaster University, 50 Charlton Avenue East, Hamilton, ON L8N 4A6 Canada
| | - Aristithes G. Doumouras
- Division of General Surgery, Department of Surgery, St. Joseph’s Healthcare Hamilton, McMaster University, 50 Charlton Avenue East, Hamilton, ON L8N 4A6 Canada ,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON Canada ,Division of General Surgery, Department of Surgery, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, St. Joseph’s Healthcare Hamilton, McMaster University, 50 Charlton Avenue East, Hamilton, ON L8N 4A6 Canada ,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON Canada ,Division of General Surgery, Department of Surgery, St. Joseph’s Healthcare Hamilton, Hamilton, ON Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, St. Joseph's Healthcare Hamilton, McMaster University, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada. .,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada. .,Division of General Surgery, Department of Surgery, St. Joseph's Healthcare Hamilton, Hamilton, ON, Canada.
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McKechnie T, Povolo CA, Lee J, Lee Y, Park L, Doumouras AG, Hong D, Bhandari M, Eskicioglu C. Very low energy diets before nonbariatric surgery: A systematic review and meta-analysis. Surgery 2022; 172:1733-1743. [PMID: 36273973 DOI: 10.1016/j.surg.2022.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 08/24/2022] [Accepted: 09/05/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND Very low energy diets serve as an intensive approach to weight loss in a short period of time. Although the preoperative use of very low energy diets to optimize patients with obesity before bariatric surgery is well established, the evidence for very low energy diets before other types of surgery remains unclear. The aim of this review was to determine the impact of preoperative very low energy diets on perioperative outcomes in nonbariatric surgery. METHODS Medline, EMBASE, CENTRAL, and PubMed were systematically searched from inception through to July 2021. Articles were included if they evaluated very low energy diets use before any type of nonbariatric surgery. The primary outcome was postoperative morbidity. Secondary outcomes included compliance, safety, and preoperative weight loss. A pairwise meta-analyses using inverse variance random effects was performed. RESULTS From 792 citations, 13 studies with 395 patients (mean age: 56.5 years, 55.8% female) receiving very low energy diets preoperatively in preparation for nonbariatric surgery were included. Mean duration of preoperative very low energy diets was 6.6 weeks (range, 0.42-17 weeks). Target daily caloric intake ranged from 450 kcal to 1,400 kcal. Compliance with very low energy diets ranged from 94% to 100%. The mean preoperative weight loss ranged from 3.2 kg to 19.2 kg. There were no significant differences in postoperative morbidity (odds ratio, 1.10; 95% confidence interval, 0.64-1.91; P = .72), operative time (standard mean difference -0.35; 95% confidence interval, 1.13-0.43, P = .38), or postoperative length of stay (standard mean difference 0.40, 95% confidence interval -0.11-0.91, P = .12) with very low energy diets. CONCLUSION Although the currently available evidence is heterogenous, preoperative very low energy diets are safe, well tolerated, and effectively induce preoperative weight loss in patients undergoing nonbariatric surgery for both benign and malignant disease. Further prospective studies are warranted.
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Affiliation(s)
- Tyler McKechnie
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada. https://twitter.com/tylermckechnie
| | - Christopher A Povolo
- McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Ontario, Canada
| | - Jay Lee
- McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Ontario, Canada
| | - Yung Lee
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada. https://twitter.com/YungLeeMD
| | - Lily Park
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada. https://twitter.com/lilyistweetingg
| | - Aristithes G Doumouras
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph's Healthcare-Hamilton, Ontario, Canada
| | - Dennis Hong
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph's Healthcare-Hamilton, Ontario, Canada
| | - Mohit Bhandari
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; McMaster University, Michael G. DeGroote School of Medicine, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph's Healthcare-Hamilton, Ontario, Canada.
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9
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McKechnie T, Khamar J, Daniel R, Lee Y, Park L, Doumouras AG, Hong D, Bhandari M, Eskicioglu C. The Senhance Surgical System in Colorectal Surgery: A Systematic Review. J Robot Surg 2022; 17:325-334. [PMID: 36127508 DOI: 10.1007/s11701-022-01455-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 09/08/2022] [Indexed: 10/14/2022]
Abstract
The Senhance Surgical System allows for infrared eye tracking, haptic feedback, and an adjustable upright seat allowing for improved ergonomics. This systematic review was designed with the aim of reviewing the current literature pertaining to the use of the Senhance Surgical System in colorectal surgery. Medline, EMBASE, and CENTRAL were searched. Articles were eligible for inclusion if they evaluated adults undergoing colorectal surgery with the Senhance Surgical System. The primary outcome was intraoperative efficacy; as defined by operative time, estimated blood loss (EBL), and conversion. A DerSimonian and Laird inverse variance random-effects meta-analysis was used to generate overall effect size estimates and narrative review was provided for each outcome. Six observational studies with 223 patients (mean age: 63.7, 41.2% female, mean BMI: 24.4 kg/m2) were included. The most common indication for surgery was colorectal cancer (n = 180, 80.7%) and the most common operation was anterior resection (n = 72, 32.3%). Meta-analyses demonstrated a pooled total operative time of 229.8 min (95% CI 189.3-270.4, I2 = 0%), console time of 141.3 min (95% CI 106.5-176.1, I2 = 0%), and docking time of 10.8 min (95% CI 6.4-15.2, I2 = 0%). The pooled EBL was 37.0 mL (95% CI 24.7-49.2, I2 = 20%). Overall, there were nine (4.0%) conversions to laparoscopy/laparotomy. The Senhance Surgical System has an acceptable safety profile, reasonable docking and console times, low conversion rates, and an affordable case cost across a variety of colorectal surgeries. Further prospective, comparative trials with other robotic surgical platforms are warranted.
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Affiliation(s)
- Tyler McKechnie
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Jigish Khamar
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Ryan Daniel
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Yung Lee
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Lily Park
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada.,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada.,Division of General Surgery, Department of Surgery, McMaster University. St. Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada.,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada.,Division of General Surgery, Department of Surgery, McMaster University. St. Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada
| | - Mohit Bhandari
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada.,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada. .,Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada. .,Division of General Surgery, Department of Surgery, McMaster University. St. Joseph's Healthcare Hamilton, 50 Charlton Avenue East, Hamilton, ON, L8N 4A6, Canada.
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10
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Elnahas AI, Reid JN, Lam M, Doumouras AG, Anvari M, Schlachta CM, Alkhamesi NA, Hawel JD, Urbach DR. Bariatric Center Designation and Outcomes Following Repeat Abdominal Surgery in Bariatric Patients. J Surg Res 2022; 280:421-428. [PMID: 36041342 DOI: 10.1016/j.jss.2022.07.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/13/2022] [Accepted: 07/05/2022] [Indexed: 10/15/2022]
Abstract
INTRODUCTION Repeat abdominal surgery in the bariatric surgery patient population may be challenging for non-bariatric-accredited institutions. The impact of regionalized bariatric care on clinical outcomes for bariatric surgery patients requiring repeat abdominal surgery is currently unknown. This study aims to investigate the association between bariatric center designation and clinical outcomes following hepatobiliary, hernia, and upper and lower gastrointestinal operations among patients with prior bariatric surgery. METHODS This is a cohort study of a large sample of Ontario residents who underwent primary bariatric surgery between 2010 and 2017. A comprehensive list of eligible abdominal operations was captured using administrative data. The primary outcome was 30-d complications. Secondary outcomes included 30-d mortality, readmission, and length of stay. RESULTS Among the 3301 study patients, 1305 (40%) received their first abdominal reoperation following bariatric surgery at a designated bariatric center. Nonbariatric center designation was not associated with significantly higher rates of 30-d complications (5.73% versus 5.72%), mortality (0.80% versus 0.77%), readmissions (1.11% versus 1.85%), or median postoperative length of stay (4 versus 4 d). After grouping the category of reoperations, upper gastrointestinal (odds ratio [OR] 0.66, confidence interval [CI] 0.39-1.11) and abdominal wall hernia surgery (OR 0.52, CI 0.27-0.99) showed a lower adjusted OR for complications among bariatric centers. CONCLUSIONS Our study demonstrates that after adjustment for case-mix and patient characteristics, bariatric surgery patients undergoing repeat abdominal surgery at nonbariatric centers is not associated with higher proportion of complications or mortality. Complex hernia surgery may be considered the most appropriate for referral.
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Affiliation(s)
- Ahmad I Elnahas
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada; ICES, London, Ontario, Canada.
| | | | | | - Aristithes G Doumouras
- ICES, London, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Mehran Anvari
- ICES, London, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Christopher M Schlachta
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Nawar A Alkhamesi
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Jeffrey D Hawel
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - David R Urbach
- ICES, London, Ontario, Canada; Department of Surgery, University of Toronto, Toronto, Ontario, Canada
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11
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Elnahas AI, Reid JN, Lam M, Doumouras AG, Anvari M, Schlachta CM, Alkhamesi NA, Hawel J, Urbach DR. Risk factors for abdominal reoperations in bariatric patients. Surg Obes Relat Dis 2021; 18:233-240. [PMID: 34789420 DOI: 10.1016/j.soard.2021.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 09/13/2021] [Accepted: 10/21/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND With a growing bariatric population, a better understanding of the patient and health provider-related factors associated with later reoperations could help providers enhance follow-up and develop reliable benchmarking targets. OBJECTIVES To investigate the patient and provider-related risk factors associated with abdominal reoperations in bariatric patients. SETTING This is a cohort study using data from a large clinical registry of Ontario bariatric patients between 2010 and 2016. METHODS A multilevel mixed effect logistic regression model using hospital and surgeon identifiers as random effects was performed to adjust for clustering of patients. The primary outcome was any abdominal operation performed within 2 years of primary bariatric surgery. RESULTS Among a cohort of 10,946 bariatric patients (86.6% receiving gastric bypass surgery), 15.8% underwent an abdominal operation within 2 years and about a third of these were urgent. The multilevel analysis demonstrated that 98% of patient variation among reoperations was a result of patient characteristics rather than disparities between surgeons or center experience. Type of procedure was not a significant factor after adjustment for surgeon and hospital level experience (OR [odds ratio] .85, 95% CI [confidence interval] .70-1.03). Concurrent abdominal wall (OR 2.40, 95% CI 1.26-4.59), hiatal hernia repairs (OR 1.29, 95% CI 1.02-1.62), and previously higher health care users (OR 1.30, 95% CI 1.15-1.46) were most significantly associated with reoperations. CONCLUSION Reoperations are significantly more common among certain bariatric patients, especially those undergoing concurrent hernia procedures. Reoperations were not associated with provider-related factors and may not be a suitable target for health provider benchmarking.
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Affiliation(s)
- Ahmad I Elnahas
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada; ICES, London, Ontario, Canada.
| | | | | | - Aristithes G Doumouras
- ICES, London, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Mehran Anvari
- ICES, London, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Christopher M Schlachta
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Nawar A Alkhamesi
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Jeff Hawel
- Department of Surgery, Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - David R Urbach
- ICES, London, Ontario, Canada; Department of Surgery, University of Toronto, Toronto, Ontario, Canada
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12
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Chen AT, Patel A, McKechnie T, Lee Y, Doumouras AG, Hong D, Eskicioglu C. Sugammadex in Colorectal Surgery: A Systematic Review and Meta-analysis. J Surg Res 2021; 270:221-229. [PMID: 34710702 DOI: 10.1016/j.jss.2021.09.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 08/03/2021] [Accepted: 09/22/2021] [Indexed: 12/29/2022]
Abstract
BACKGROUND Traditionally, reversal of neuromuscular blocking agents following the completion of surgery was achieved with cholinesterase inhibitors. Recently, sugammadex has been increasingly relied upon. Sugammadex is a γ-cyclodextrin molecule that rapidly reverses steroidal neuromuscular blocking drugs. Its use following colorectal surgery has become more common, and while the rapidity of reversal is undoubtedly improved, whether sugammadex impacts clinical postoperative outcomes is unknown. This systematic review and meta-analysis aims to compare postoperative outcomes in patients receiving sugammadex to those receiving a control during colorectal surgery. METHODS Medline, Embase, and CENTRAL were systematically searched. Articles were included if they compared sugammadex with a control (e.g., neostigmine, pyridostigmine, placebo) in patients undergoing colorectal surgery in terms of total hospital length of stay and frequency of postoperative adverse respiratory events. Pairwise meta-analyses using inverse variance random effects was performed. RESULTS From 269 citations, five studies with 535 patients receiving sugammadex (45.8% female; mean age: 64.4) and 569 patients receiving a control (45.0% female; mean age: 64.3) were included. There was no significant difference in length of stay between the two groups (MD -0.01, 95% CI -0.27 to 0.25, P = 0.95). The risk of adverse respiratory events postoperatively was similar between the two groups (RR 1.33, 95% CI 0.81-2.19, P = 0.25). CONCLUSION There are no current data to suggest an improvement in postoperative outcomes with the use of sugammadex in patients undergoing colorectal surgery. This study is limited by the number of included studies. Further prospective studies comparing sugammadex and a control in colorectal surgery is required.
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Affiliation(s)
- Andrew T Chen
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Ashaka Patel
- Schulich School of Medicine and Dentistry, Western University, London, Ontario, Canada
| | - Tyler McKechnie
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Yung Lee
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Department of Surgery, Division of General Surgery, McMaster University, Hamilton, Ontario, Canada; Department of Surgery, Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Dennis Hong
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Department of Surgery, Division of General Surgery, McMaster University, Hamilton, Ontario, Canada; Department of Surgery, Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Department of Surgery, Division of General Surgery, McMaster University, Hamilton, Ontario, Canada; Department of Surgery, Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada.
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13
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Logie K, Doumouras AG, Springer JE, Eskicioglu C, Hong D. Regional Variation in Laparoscopy Use for Elective Colon Cancer Treatment in Canada: The Importance of Fellowship Training Sites. Dis Colon Rectum 2021; 64:1232-1239. [PMID: 33960327 DOI: 10.1097/dcr.0000000000002034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Over the last decade, use of laparoscopy for the treatment of colon cancer has been variable despite evidence of benefit, possibly reflecting surgeon expertise rather than other factors. OBJECTIVE The purpose of this study was to examine the spatial variation in the use of laparoscopy for colon cancer surgery and to determine what factors may influence use. DESIGN This was a population-based retrospective analysis from April 2008 to March 2015. SETTINGS All Canadian provinces (excluding Quebec) were included. PATIENTS The study included all patients ≥18 years of age undergoing elective colectomy for colon cancer. MAIN OUTCOME MEASURES The primary outcome was laparoscopy use rates. Predictors of use included patient and disease characteristics, year of surgery, rurality, hospital and surgeon volumes, and distance from a colorectal fellowship training center. RESULTS A total of 34,725 patients were identified, and 42% underwent laparoscopic surgery. Significant spatial variations in laparoscopy use were identified, with 95% of high-use clusters located ≤100 km and 98% of low-use clusters located >100 km from a colorectal fellowship center. There were no high-use clusters located around large academic centers without colorectal fellowships. At the individual level, patients living within 25 km and 26 to 100 km of a fellowship center were 2.6 and 1.6 times more likely to undergo laparoscopic surgery compared with those >100 km away (95% CI, 2.47-2.79, p < 0.00; 95% CI, 1.53-1.71, p < 0.001). Surgeon and hospital volumes were associated with increased rates of laparoscopy use (p < 0.001). LIMITATIONS Data were obtained from an administrative database, and despite 85% to 95% published validity, they remain subject to misclassification, response, and measurement bias. CONCLUSIONS Significant spatial variations in the use of laparoscopy for colon cancer surgery exist. After adjusting for patient and system factors, proximity to a colorectal fellowship training center remained a strong predictor of laparoscopy use. There remain regional variations in colon cancer treatment, with discrepancies in the surgical care offered to Canadian patients based solely on location. See Video Abstract at http://links.lww.com/DCR/B595. VARIACIN REGIONAL EN EL USO DE LAPAROSCOPIA PARA EL TRATAMIENTO ELECTIVO DEL CNCER DE COLON EN CANAD LA IMPORTANCIA DE LOS SITIOS DE CAPACITACIN PARA RESIDENTES ANTECEDENTES:Durante la última década, la utilización de la laparoscopia para el tratamiento del cáncer de colon ha sido variable a pesar de la evidencia de beneficio; posiblemente reflejando la experiencia del cirujano, más que otros factores.OBJETIVO:Examinar la variación espacial en el uso de la laparoscopia para la cirugía del cáncer de colon y determinar qué factores pueden influir en la utilización.DISEÑO:Análisis retrospectivo poblacional de abril de 2008 a marzo de 2015.ENTORNO CLÍNICO:Todas las provincias canadienses (excepto Quebec).PACIENTES:Todos los pacientes> 18 años sometidos a colectomía electiva por cáncer de colon.PRINCIPALES MEDIDAS DE RESULTADO:El principal resultado fueron las tasas de utilización de laparoscopia. Los predictores de uso incluyeron las características del paciente y la enfermedad, el año de la cirugía, la ruralidad, los volúmenes de hospitales y cirujanos, y la distancia a un centro de formación de residentes colorectales.RESULTADOS:Se identificaron 34.725 pacientes, 42% fueron sometidos a cirugía laparoscópica. Se identificaron variaciones espaciales significativas en el uso de laparoscopia, con el 95% de los conglomerados de alto uso ubicados a <100 km y el 98% de los conglomerados de bajo uso ubicados a> 100 km, desde un centro de residencia colorectal. No había grupos de alto uso ubicados alrededor de grandes centros académicos sin residentes colorrectales. A nivel individual, los pacientes que vivían dentro de los 25 km y 26-100 km de un centro de residentes tenían 2,6 y 1,6 veces más probabilidades de someterse a una cirugía laparoscópica, respectivamente, en comparación con aquellos a> 100 km de distancia (95% CI 2,47-2,79, p <0,00; IC del 95% 1,53-1,71, p <0,001). Los volúmenes de cirujanos y hospitales se asociaron con mayores tasas de utilización de laparoscopia (p <0,001).LIMITACIONES:Los datos se obtuvieron de una base de datos administrativa y, a pesar de una validez publicada del 85-95%, siguen sujetos a errores de clasificación, respuesta y sesgo de medición.CONCLUSIONES:Existen variaciones espaciales significativas en el uso de la laparoscopia para la cirugía del cáncer de colon. Después de ajustar por factores del paciente y del sistema, la proximidad a un centro de formación de residentes colorectales siguió siendo un fuerte predictor del uso de laparoscopia. Sigue habiendo variaciones regionales en el tratamiento del cáncer de colon, con discrepancias en la atención quirúrgica ofrecida a los pacientes canadienses basadas únicamente en la ubicación. Consulte Video Resumen en http://links.lww.com/DCR/B595.
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Affiliation(s)
- Kathleen Logie
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
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14
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Tarride JE, Doumouras AG, Hong D, Paterson JM, Tibebu S, Nguyen F, Perez R, Taylor VH, Xie F, Boudreau V, Pullenayegum E, Urbach DR, Anvari M. Comparison of 4-Year Health Care Expenditures Associated With Roux-en-Y Gastric Bypass vs Sleeve Gastrectomy. JAMA Netw Open 2021; 4:e2122079. [PMID: 34499137 PMCID: PMC8430456 DOI: 10.1001/jamanetworkopen.2021.22079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
IMPORTANCE Data on the long-term health care expenditures associated with bariatric surgery consisting of Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy are lacking. OBJECTIVE To compare 4-year health care expenditures after RYGB vs sleeve gastrectomy, identify factors independently associated with 4-year health care expenditures, and compare the procedures in terms of subsequent hospitalizations, bariatric procedures, and all-cause mortality. DESIGN, SETTING, AND PARTICIPANTS In this propensity score-matched cohort study, all residents of Ontario, Canada, who underwent publicly funded surgery with RYGB (n = 6301) or sleeve gastrectomy (n = 926) from March 1, 2010, to March 31, 2015, and consented to participate in the Ontario Bariatric Registry were eligible for the study. Follow-up was completed on March 31, 2019, and data were analyzed from May 5, 2020, to May 20, 2021. INTERVENTIONS RYGB and sleeve gastrectomy. MAIN OUTCOMES AND MEASURES Publicly funded health care expenditures, subsequent hospitalizations, bariatric procedures, and mortality during the 4 years after RYGB or sleeve gastrectomy. RESULTS The 1:1 matched study cohorts consisted of 1624 patients (812 per cohort) with a mean (SD) age of 48.0 (10.6) years, and 1242 women (76.5%). The mean body mass index (calculated as weight in kilograms divided by height in square meters) was 51.9 (8.3) for the RYGB cohort and 51.9 (8.9) for the sleeve gastrectomy cohort. The 4-year cumulative costs were not statistically significantly different between RYGB and sleeve gastrectomy (mean [SD], $33 682 [$31 169] vs $33 948 [$32 633], respectively; P = .86). Having a history of coronary artery disease was associated with a 35% increase in overall health care expenditures; chronic kidney disease, a 54% increase; and mental health admissions, a 67% increase. There were no statistically significant differences in all-cause mortality between RYGB and sleeve gastrectomy (1.5% vs 2.2%, respectively; P = .26) or the total number of hospitalizations (754 vs 669, respectively; P = .11) during the 4-year follow-up period. However, nonelective hospitalizations occurred more frequently with RYGB vs sleeve gastrectomy (472 vs 339, respectively; P = .002). Roux-en-Y gastric bypass was associated with relatively fewer subsequent bariatric procedures during the 4-year follow-up period (9 vs 40, respectively; P < .001). CONCLUSIONS AND RELEVANCE In this Canadian population-based study, key results indicated that 4-year health care expenditures, all-cause mortality, and number of hospital admissions associated with RYGB did not significantly differ from those for sleeve gastrectomy. The rate of subsequent bariatric surgery was lower with RYGB. This study identified important patient-level drivers of health care expenditures that need to be further investigated.
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Affiliation(s)
- Jean-Eric Tarride
- Department of Health Research Methods, Evidence and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
- Centre for Health Economics and Policy Analysis, McMaster University, Hamilton, Ontario, Canada
- Programs for Assessment of Technology in Health, The Research Institute of St. Joe’s Hamilton, St. Joseph’s Healthcare Hamilton, Hamilton, Ontario, Canada
| | - Aristithes G. Doumouras
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery, St Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery, St Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - J. Michael Paterson
- ICES, Toronto, Ontario, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | | | | | - Valerie H. Taylor
- Department of Psychiatry, University of Calgary, Calgary, Alberta, Canada
| | - Feng Xie
- Department of Health Research Methods, Evidence and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
- Centre for Health Economics and Policy Analysis, McMaster University, Hamilton, Ontario, Canada
| | - Vanessa Boudreau
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery, St Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
- ICES, Toronto, Ontario, Canada
| | - Eleanor Pullenayegum
- The Hospital for Sick Children, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - David R. Urbach
- Women’s College Hospital Research Institute, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Women’s College Hospital Research Institute, Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Mehran Anvari
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery, St Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
- ICES, Toronto, Ontario, Canada
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15
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Anvari S, Samarasinghe Y, Alotaiby N, Tiboni M, Crowther M, Doumouras AG. Iron supplementation following bariatric surgery: A systematic review of current strategies. Obes Rev 2021; 22:e13268. [PMID: 34013662 DOI: 10.1111/obr.13268] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 12/17/2022]
Abstract
Iron deficiency (ID) and iron deficiency anemia (IDA) are common following bariatric surgery; however, there are limited standardized treatment recommendations for their management. The purpose of this study was to review the current strategies for iron supplementation following bariatric surgery and assess their relative efficacy in managing ID and IDA. MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials were searched to January 2021. Primary outcomes of interest were prevention or improvement in ID or IDA with iron supplementation. Forty-nine studies with 12,880 patients were included. Most patients underwent Roux-en-Y gastric bypass (61.9%). Iron supplementation was most commonly administered orally for prevention of ID/IDA and was effective in 52% of studies. Both IV and oral iron were given for treatment of ID/IDA. Fifty percent (3/6) of the oral and 100% (3/3) of the IV supplementation strategies were effective at treating ID. Iron supplementation strategies employed following bariatric surgery are highly variable, and many do not provide sufficient iron to prevent the development of ID and IDA, potentially due to poor patient adherence. Further high-quality prospective trials, particularly comparing intravenous and oral iron, are warranted in order to determine the ideal dosage, route, and duration of iron supplementation.
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Affiliation(s)
- Sama Anvari
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - Nouf Alotaiby
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.,Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada.,Department of General Surgery, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Maria Tiboni
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Mark Crowther
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Department of Pathology and Molecular Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.,Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
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16
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Lee Y, Anvari S, Chu MM, Lovrics O, Khondker A, Malhan R, Aditya I, Doumouras AG, Walsh M, Hong D. Improvement of kidney function in patients with chronic kidney disease and severe obesity after bariatric surgery: A systematic review and meta-analysis. Nephrology (Carlton) 2021; 27:44-56. [PMID: 34375462 DOI: 10.1111/nep.13958] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 07/21/2021] [Accepted: 07/31/2021] [Indexed: 02/07/2023]
Abstract
The general management for chronic kidney disease (CKD) includes treating reversible causes, including obesity, which may be both a driver and comorbidity for CKD. Bariatric surgery has been shown to reduce the likelihood of CKD progression and improve kidney function in observational studies. We performed a systematic review and meta-analysis of patients with at least stage 3 CKD and obesity receiving bariatric surgery. We searched Embase, MEDLINE, CENTRAL and identified eligible studies reporting on kidney function outcomes in included patients before and after bariatric surgery with comparison to a medical intervention control if available. Risk of bias was assessed with the Newcastle-Ottawa Risk of Bias score. Nineteen studies were included for synthesis. Bariatric surgery showed improved eGFR with a mean difference (MD) of 11.64 (95%CI: 5.84 to 17.45, I2 = 66%) ml/min/1.73m2 and reduced SCr with MD of -0.24 (95%CI -0.21 to -0.39, I2 = 0%) mg/dl after bariatric surgery. There was no significant difference in the relative risk (RR) of having CKD stage 3 after bariatric surgery, with a RR of -1.13 (95%CI: -0.83 to -2.07, I2 = 13%), but there was reduced likelihood of having uACR >30 mg/g or above with a RR of -3.03 (95%CI: -1.44 to -6.40, I2 = 91%). Bariatric surgery may be associated with improved kidney function with the reduction of BMI and may be a safe treatment option for patients with CKD. Future studies with more robust reporting are required to determine the feasibility of bariatric surgery for the treatment of CKD.
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Affiliation(s)
- Yung Lee
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Sama Anvari
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Megan M Chu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Olivia Lovrics
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Adree Khondker
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Roshan Malhan
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Ishan Aditya
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Michael Walsh
- Division of Nephrology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada.,Population Health Research Institute (PHRI), McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Lee Y, Kirubarajan A, Patro N, Soon MS, Doumouras AG, Hong D. Impact of hospital lockdown secondary to COVID-19 and past pandemics on surgical practice: A living rapid systematic review. Am J Surg 2021; 222:67-85. [PMID: 33218675 PMCID: PMC7657940 DOI: 10.1016/j.amjsurg.2020.11.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/02/2020] [Accepted: 11/07/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The COVID-19 pandemic has disrupted surgical practice worldwide. There is widespread concern for surgeon and provider safety, and the implications of hospital lockdown on patient care during epidemics. METHODS Medline, EMBASE, CENTRAL, and PubMed were systematically searched from database inception to July 1, 2020 and ongoing monthly surveillance will be conducted. We included studies that assessed postoperative patient outcomes or protection measures for surgical personnel during epidemics. RESULTS We included 61 studies relevant to the COVID-19 pandemic and past epidemics. Lockdown measures were noted globally including cancellation of elective surgeries and outpatient clinics. The pooled postoperative complication rate during epidemics was 21.0% among 2095 surgeries. 31 studies followed the health of surgical workers with the majority noting no adverse outcomes with proper safety measures. CONCLUSIONS This review highlights postoperative patient outcomes during worldwide epidemics including the COVID-19 pandemic and identifies specific safety measures to minimize infection of healthcare workers.
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Affiliation(s)
- Yung Lee
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada,Centre for Minimal Access Surgery (CMAS), St. Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
| | | | - Nivedh Patro
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada,Centre for Minimal Access Surgery (CMAS), St. Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Melissa Sam Soon
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada,Centre for Minimal Access Surgery (CMAS), St. Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G. Doumouras
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada,Centre for Minimal Access Surgery (CMAS), St. Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada,Centre for Minimal Access Surgery (CMAS), St. Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada,Corresponding author. Division of General Surgery, St. Joseph’s Healthcare, Room G814, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada
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18
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Yu CW, Park LJ, Pinto A, Ma ON, Lee Y, Gupta R, Chaudhary V, Doumouras AG, Hong D. The Impact of Bariatric Surgery on Diabetic Retinopathy: A Systematic Review and Meta-Analysis. Am J Ophthalmol 2021; 225:117-127. [PMID: 33428884 DOI: 10.1016/j.ajo.2020.12.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/21/2020] [Accepted: 12/28/2020] [Indexed: 01/01/2023]
Abstract
OBJECTIVE While bariatric surgery induces remission of type 2 diabetes mellitus and reduces other microvascular complications, its impact on diabetic retinopathy (DR) is unclear. Some trials suggest early worsening of DR postsurgery because of rapid improvements in hyperglycemia. This meta-analysis sought to estimate the impact of bariatric surgery on DR for obese patients compared with medical treatment. DESIGN Systematic review and meta-analysis. METHODS The Medline, Embase, and PubMed Central databases were searched to March 2020. Primary studies comparing DR in patients undergoing bariatric surgery with those undergoing medical management were included. Results were meta-analyzed using a random-effects model. Primary outcomes included prevalence of all DR and sight-threatening DR after surgery. Secondary outcomes included worsening of DR within and beyond 12 months. RESULTS Overall, 14 studies comprised of 110,300 surgical patients and 252,289 control subjects were included. Surgical patients had a statistically significantly lower postoperative prevalence of all DR (relative risk [RR] 0.17 [95% confidence interval {CI} 0.13-0.22]) and sight-threatening DR (RR 0.47 [95% CI 0.27-0.82]). Early worsening of DR and progression to sight-threatening DR had occurred more often in those with more severe DR initially. However, beyond 12 months, bariatric surgery resulted in significantly fewer patients with worsened DR (RR 0.29 [95% CI 0.16-0.54]). The overall risk of bias was low; estimates of relative effects had low to moderate certainty of evidence. CONCLUSION While bariatric surgery was associated with fewer cases of all and sight-threatening DR, early worsening was more severe in patients with existing sight-threatening DR. These findings argue for frequent monitoring during the first postoperative year.
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Doumouras AG, Wong JA, Paterson JM, Lee Y, Sivapathasundaram B, Tarride JE, Thabane L, Hong D, Yusuf S, Anvari M. Bariatric Surgery and Cardiovascular Outcomes in Patients With Obesity and Cardiovascular Disease:: A Population-Based Retrospective Cohort Study. Circulation 2021; 143:1468-1480. [PMID: 33813836 DOI: 10.1161/circulationaha.120.052386] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Bariatric surgery has been shown to significantly reduce cardiovascular risk factors. However, whether surgery can reduce major adverse cardiovascular events (MACE), especially in patients with established cardiovascular disease, remains poorly understood. The present study aims to determine the association between bariatric surgery and MACE among patients with cardiovascular disease and severe obesity. METHODS This was a propensity score-matched cohort study using province-wide multiple-linked administrative databases in Ontario, Canada. Patients with previous ischemic heart disease or heart failure who received bariatric surgery were matched on age, sex, heart failure history, and a propensity score to similar controls from a primary care medical record database in a 1:1 ratio. The primary outcome was the incidence of extended MACE (first occurrence of all-cause mortality, myocardial infarction, coronary revascularization, cerebrovascular events, and heart failure hospitalization). Secondary outcome included 3-component MACE (myocardial infarction, ischemic stroke, and all-cause mortality). Outcomes were evaluated through a combination of matching via propensity score and subsequent multivariable adjustment. RESULTS A total of 2638 patients (n=1319 in each group) were included, with a median follow-up time of 4.6 years. The primary outcome occurred in 11.5% (151/1319) of the surgery group and 19.6% (259/1319) of the controls (adjusted hazard ratio [HR], 0.58 [95% CI, 0.48-0.71]; P<0.001). The association was notable for those with heart failure (HR, 0.44 [95% CI, 0.31-0.62]; P<0.001; absolute risk difference, 19.3% [95% CI, 12.0%-26.7%]) and in those with ischemic heart disease (HR, 0.60 [95% CI, 0.48-0.74]; P<0.001; absolute risk difference, 7.5% [95% CI, 4.7%-10.5%]). Surgery was also associated with a lower incidence of the secondary outcome (HR, 0.66 [95% CI, 0.52-0.84]; P=0.001) and cardiovascular mortality (HR, 0.35 [95% CI, 0.15-0.80]; P=0.001). CONCLUSIONS Bariatric surgery was associated with a lower incidence of MACE in patients with cardiovascular disease and obesity. These findings require confirmation by a large-scale randomized trial.
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Affiliation(s)
- Aristithes G Doumouras
- Division of General Surgery (A.G.D., Y.L., D.H., M.A.), McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada (A.G.D., J.M.P., B.S., D.H., M.A.)
| | - Jorge A Wong
- Department of Medicine (J.A.W., S.Y.), McMaster University, Hamilton, Ontario, Canada.,Population Health Research Institute, Hamilton Health Sciences and McMaster University, Ontario, Canada (J.A.W., L.T., S.Y.)
| | - J Michael Paterson
- Department of Family Medicine (J.M.P.), McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada (A.G.D., J.M.P., B.S., D.H., M.A.).,Institute of Health Policy, Management, and Evaluation, University of Toronto, Ontario, Canada. (J.M.P.)
| | - Yung Lee
- Division of General Surgery (A.G.D., Y.L., D.H., M.A.), McMaster University, Hamilton, Ontario, Canada
| | | | - Jean-Eric Tarride
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences (J.-E.T., L.T.), McMaster University, Hamilton, Ontario, Canada.,Center for Health Economics and Policy Analysis (J.-E.T.), McMaster University, Hamilton, Ontario, Canada.,Programs for Assessment of Technology in Health, The Research Institute of St Joe's Hamilton, St Joseph's Healthcare Hamilton, Ontario, Canada (J.-E.T.)
| | - Lehana Thabane
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences (J.-E.T., L.T.), McMaster University, Hamilton, Ontario, Canada.,Population Health Research Institute, Hamilton Health Sciences and McMaster University, Ontario, Canada (J.A.W., L.T., S.Y.)
| | - Dennis Hong
- Division of General Surgery (A.G.D., Y.L., D.H., M.A.), McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada (A.G.D., J.M.P., B.S., D.H., M.A.)
| | - Salim Yusuf
- Department of Medicine (J.A.W., S.Y.), McMaster University, Hamilton, Ontario, Canada.,Population Health Research Institute, Hamilton Health Sciences and McMaster University, Ontario, Canada (J.A.W., L.T., S.Y.)
| | - Mehran Anvari
- Division of General Surgery (A.G.D., Y.L., D.H., M.A.), McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada (A.G.D., J.M.P., B.S., D.H., M.A.)
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20
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Doumouras AG, Lee Y, Paterson JM, Gerstein HC, Shah BR, Sivapathasundaram B, Tarride JE, Anvari M, Hong D. Association Between Bariatric Surgery and Major Adverse Diabetes Outcomes in Patients With Diabetes and Obesity. JAMA Netw Open 2021; 4:e216820. [PMID: 33900401 PMCID: PMC8076963 DOI: 10.1001/jamanetworkopen.2021.6820] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
IMPORTANCE There are high-quality randomized clinical trial data demonstrating the effect of bariatric surgery on type 2 diabetes remission, but these studies are not powered to study mortality in this patient group. Large observational studies are warranted to study the association of bariatric surgery with mortality in patients with type 2 diabetes. OBJECTIVE To determine the association between bariatric surgery and all-cause mortality among patients with type 2 diabetes and severe obesity. DESIGN, SETTING, AND PARTICIPANTS This retrospective, population-based matched cohort study included patients with type 2 diabetes and body mass index (BMI; calculated as weight in kilograms divided by height in meters squared) 35 or greater who underwent bariatric surgery from January 2010 to December 2016 in Ontario, Canada. Multiple linked administrative databases were used to define confounders, including age, baseline BMI, sex, comorbidities, duration of diabetes diagnosis, health care utilization, socioeconomic status, smoking status, substance abuse, cancer screening, and psychiatric history. Potential controls were identified from a primary care electronic medical record database. Data were analyzed in 2020. EXPOSURE Bariatric surgery (gastric bypass and sleeve gastrectomy) and nonsurgical management of obesity provided by the primary care physician. MAIN OUTCOMES AND MEASURES The primary outcome was all-cause mortality. Secondary outcomes were cause-specific mortality and nonfatal morbidities. Groups were compared through a multivariable Cox proportional Hazards model. RESULTS A total of 6910 patients (mean [SD] age at baseline, 52.04 [9.45] years; 4950 [71.6%] women) were included, with 3455 patients who underwent bariatric surgery and 3455 match controls and a median (interquartile range) follow-up time of 4.6 (3.22-6.35) years. In the surgery group, 83 patients (2.4%) died, compared with 178 individuals (5.2%) in the control group (hazard ratio [HR] 0.53 [95% CI, 0.41-0.69]; P < .001). Bariatric surgery was associated with a 68% lower cardiovascular mortality (HR, 0.32 [95% CI, 0.15-0.66]; P = .002) and a 34% lower rate of composite cardiac events (HR, 0.68 [95% CI, 0.55-0.85]; P < .001). Risk of nonfatal renal events was also 42% lower in the surgical group compared with the control group (HR, 0.58 [95% CI, 0.35-0.95], P = .03). Of the groups that had the highest absolute benefit associated with bariatric surgery, men had an absolute risk reduction (ARR) of 3.7% (95% CI, 1.7%-5.7%), individuals with more than 15 years of diabetes had an ARR of 4.3% (95% CI, 0.8%-7.8%), and individuals aged 55 years or older had an ARR of 4.7% (95% CI, 3.0%-6.4%). CONCLUSIONS AND RELEVANCE These findings suggest that bariatric surgery was associated with reduced all-cause mortality and diabetes-specific cardiac and renal outcomes in patients with type 2 diabetes and severe obesity.
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Affiliation(s)
| | - Yung Lee
- Division of General Surgery, McMaster University, Hamilton, Canada
| | - J. Michael Paterson
- ICES, Toronto, Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Canada
| | - Hertzel C. Gerstein
- Population Health Research Institute, Hamilton, Canada
- Department of Medicine, McMaster University, Hamilton, Canada
| | - Baiju R. Shah
- ICES, Toronto, Canada
- Department of Medicine, University of Toronto, Toronto, Canada
- Sunnybrook Research Institute, Toronto, Canada
| | | | - Jean-Eric Tarride
- Programs for Assessment of Technology in Health Research Institute, St Joseph’s Healthcare, McMaster University, Hamilton, Canada
- Department of Clinical Epidemiology and Biostatistics, Faculty of Health Sciences, McMaster University, Hamilton, Canada
| | - Mehran Anvari
- Division of General Surgery, McMaster University, Hamilton, Canada
- ICES, Toronto, Canada
| | - Dennis Hong
- Division of General Surgery, McMaster University, Hamilton, Canada
- ICES, Toronto, Canada
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21
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Malik PRA, Doumouras AG, Malhan RS, Lee Y, Boudreau V, Barlow K, Karpinski M, Anvari M. Obesity, Cancer, and Risk Reduction with Bariatric Surgery. Surg Clin North Am 2021; 101:239-254. [PMID: 33743967 DOI: 10.1016/j.suc.2020.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The prevalence of noncommunicable diseases has increased dramatically in North America and throughout the world and is expected to continue increasing in coming years. Obesity has been linked to several types of cancers and is associated with increased morbidity and mortality following cancer diagnosis. Bariatric surgery has emerged as the prominent model to evaluate the effects of intentional weight loss on cancer incidence and outcomes. Current literature, comprising prospective cohort investigations, indicates site-specific reductions in cancer risk with select bariatric procedures. Future research is required to establish evidence-based indications for bariatric surgery in the context of cancer prevention.
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Affiliation(s)
- Peter R A Malik
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada; Department of Health Research Methods, Evidence & Impact, Faculty of Health Sciences, McMaster University Medical Centre, 1280 Main Street West, 2C Area, Hamilton, Ontario L8S 4K1, Canada
| | - Aristithes G Doumouras
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada
| | - Roshan S Malhan
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada
| | - Yung Lee
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada
| | - Vanessa Boudreau
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada; Department of Health Research Methods, Evidence & Impact, Faculty of Health Sciences, McMaster University Medical Centre, 1280 Main Street West, 2C Area, Hamilton, Ontario L8S 4K1, Canada
| | - Karen Barlow
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada
| | - Marta Karpinski
- Department of Health Research Methods, Evidence & Impact, Faculty of Health Sciences, McMaster University Medical Centre, 1280 Main Street West, 2C Area, Hamilton, Ontario L8S 4K1, Canada
| | - Mehran Anvari
- Department of Surgery and Centre for Minimal Access Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Rm T2141 Hamilton, Ontario L8N 4A6, Canada.
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22
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McKechnie T, Springer JE, Doumouras AG, Schroeder T, Eskicioglu C, Reid S. Influence of undergraduate medical education exposure to cadaveric dissection on choice of surgical specialty: a national survey of Canadian surgical residents. Can J Surg 2021; 64:E183-E190. [PMID: 33739803 PMCID: PMC8064261 DOI: 10.1503/cjs.018019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background The number of Canadian Residency Matching Service (CaRMS) applicants ranking surgical specialties as their first choice has declined over the past 20 years; concurrently, there has been a reduction in the number of hours spent teaching undergraduate medical education (UGME) anatomy, particularly with cadaveric dissection. The aim of this study was to determine the factors that most influence selection of a surgical specialty, with specific focus on the impact of UGME anatomy training. Methods A 36-item cross-sectional survey was designed by experts in medical education and distributed to all current surgical residents in Canada in October 2018. Responses were recorded on a 5-point Likert scale or by means of list ranking. We analyzed univariable outcomes with a t test for continuous outcomes and the χ2 test for dichotomous outcomes. Results Of 1493 surgical residents, 228 responded to the survey (response rate 15.3%). Respondents reported experiences on core rotations and elective rotations, and access to a mentor as the most important factors in deciding to pursue a surgical residency. Anatomy training with or without cadaveric dissection was moderately influential in respondents’ first-choice CaRMS discipline (mean Likert scale score 2.97 [standard deviation (SD) 1.34] and 2.87 [SD 1.26], respectively). General surgery residents’ CaRMS applications were more likely to have been influenced by UGME anatomy training than the applications by residents in other surgical specialties (p < 0.001). The impact of UGME anatomy training did not vary between postgraduate years or between male and female residents. Conclusion Canadian surgical residents’ decision to apply to a surgical specialty did not seem to be strongly influenced by their UGME anatomy training, with or without cadaveric dissection, but, rather, by factors such as clinical experience and surgical mentorship. Further evaluation of groups that were more positively affected by their UGME anatomy training is warranted.
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Affiliation(s)
- Tyler McKechnie
- From the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie); the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Springer, Doumouras, Schroeder, Eskicioglu, Reid); the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Eskicioglu); and the Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ont. (Reid)
| | - Jeremy E Springer
- From the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie); the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Springer, Doumouras, Schroeder, Eskicioglu, Reid); the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Eskicioglu); and the Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ont. (Reid)
| | - Aristithes G Doumouras
- From the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie); the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Springer, Doumouras, Schroeder, Eskicioglu, Reid); the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Eskicioglu); and the Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ont. (Reid)
| | - Travis Schroeder
- From the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie); the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Springer, Doumouras, Schroeder, Eskicioglu, Reid); the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Eskicioglu); and the Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ont. (Reid)
| | - Cagla Eskicioglu
- From the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie); the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Springer, Doumouras, Schroeder, Eskicioglu, Reid); the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Eskicioglu); and the Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ont. (Reid)
| | - Susan Reid
- From the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie); the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Springer, Doumouras, Schroeder, Eskicioglu, Reid); the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Eskicioglu); and the Division of General Surgery, Department of Surgery, Juravinski Hospital, Hamilton, Ont. (Reid)
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23
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Lee Y, Raveendran L, Lovrics O, Tian C, Khondker A, Koyle MA, Farcas M, Doumouras AG, Hong D. The role of bariatric surgery on kidney transplantation: A systematic review and meta-analysis. Can Urol Assoc J 2021; 15:E553-E562. [PMID: 33750524 DOI: 10.5489/cuaj.7109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Obesity (body mass index [BMI] >35 kg/m2) remains a relative contraindication for kidney transplant, while patients after kidney transplantation (KTX) are predisposed to obesity. The present study aims to investigate the role of bariatric surgery in improving transplant candidacy in patients prior to KTX, as well its safety and efficacy in KTX patients postoperatively. METHODS A systematic search was conducted up to March 2020. Both comparative and non-comparative studies investigating the role of bariatric surgery before or after KTX were considered. Outcomes included change in BMI, rates of mortality and complications, and the rate of patients who underwent KTX following bariatric surgery. Pooled estimates were calculated using the random effects meta-analysis of proportions. RESULTS Twenty-one studies were eligible for final review; 11 studies investigated the role of bariatric surgery before KTX. The weighted mean BMI was 43.4 (5.7) kg/m2 at baseline and 33.9 (6.3) kg/m2 at 29.1 months followup. After bariatric surgery, 83% (95% confidence interval [CI] 57-99) were successfully listed for KTX and 83% (95% CI 65-97) patients subsequently received successful KTX. Ten studies investigated the role of bariatric surgery after kidney transplant. Weighted mean baseline BMI was 43.8 (2.2) kg/m2 and mean BMI at 19.5 months followup was 34.2 (6.7) kg/m2. Overall, all-cause 30-day mortality was 0.5% for both those who underwent bariatric surgery before or after receiving a KTX. The results of this study are limited by the inclusion of only non-randomized studies, limited followup, and high heterogeneity. CONCLUSIONS Bariatric surgery may be safe and effective in reducing weight to improve KTX candidacy in patients with severe obesity and can also be used safely following KTX.
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Affiliation(s)
- Yung Lee
- Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | | | - Olivia Lovrics
- Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Chenchen Tian
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Adree Khondker
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Martin A Koyle
- Division of Pediatric Urology, Hospital for Sick Children, Toronto, ON, Canada
| | - Monica Farcas
- Division of Urology, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada
| | | | - Dennis Hong
- Division of General Surgery, McMaster University, Hamilton, ON, Canada
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24
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Griffiths CD, McKechnie T, Lee Y, Springer JE, Doumouras AG, Hong D, Eskicioglu C. Presentation and survival among patients with colorectal cancer before the age of screening: a systematic review and meta-analysis. Can J Surg 2021; 64:E91-E100. [PMID: 33599450 PMCID: PMC7955831 DOI: 10.1503/cjs.013019] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background The incidence of colorectal cancer in North America is rising among patients younger than 50 years. Available data are conflicting regarding presentation and outcomes in this population. This review aimed to synthesize literature regarding young patients with colorectal cancer with respect to patient demographics, disease extent and survival, compared with patients older than 50 years. Methods We searched Medline, Embase, the Cochrane Central Register of Controlled Trials and PubMed for articles published between 1990 and the time of search. Articles comparing North American patients with colorectal cancer younger and older than 50 years were eligible for inclusion. We used a random-effects model to pool odds ratios. Results Eight retrospective studies were eligible for inclusion (n = 790 959). Mean age was 42.6 years (standard deviation [SD] 5.07) in the younger group, and 69.1 years (SD 9.25) in the older group. Young patients were more likely to present with regional (odds ratio [OR] 1.27, 95% confidence interval [CI] 1.16–1.40) and distant disease (OR 1.47, 95%CI 1.30–1.67). Considering patients at all stages of disease, differences in 5-year overall survival (OR 1.54, 95%CI 0.96–2.47) and cancer-specific survival (OR 1.01, 95%CI 0.91–1.13) were not statistically significant between groups. However, when controlling for disease extent, 5-year cancer-specific survival was significantly higher among young patients with local (OR 1.69, 95%CI 1.43–1.99), regional (OR 1.37, 95%CI 1.16–1.63) and distant disease (OR 1.79, 95%CI 1.45–2.21). Conclusion North American patients presenting with colorectal cancer before the age of 50 years are more likely to have advanced disease. Although overall and cancer-specific survival is not significantly different between these groups, younger patients have improved survival when controlling for cancer stage.
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Affiliation(s)
- Christopher D Griffiths
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
| | - Tyler McKechnie
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
| | - Yung Lee
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
| | - Jeremy E Springer
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
| | - Aristithes G Doumouras
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
| | - Dennis Hong
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
| | - Cagla Eskicioglu
- From the Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ont. (Griffiths, McKechnie, Lee, Springer, Doumouras, Hong, Eskicioglu); the Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont. (McKechnie, Lee); and the Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ont. (Doumouras, Hong, Eskicioglu)
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Springer JE, Doumouras AG, Lethbridge S, Forbes S, Eskicioglu C. The predictors of Enhanced Recovery After Surgery utilization and practice variations in elective colorectal surgery: a provincial survey. Can J Surg 2020. [PMID: 33107814 DOI: 10.1503/cjs.009419] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Enhanced Recovery After Surgery (ERAS) protocols use evidence-based perioperative practices that reduce morbidity and length of stay and improve patient satisfaction. ERAS is considered standard of care; however, utilization remains low and substantial practice variation exists. The aim of this study was to pragmatically characterize variation in colorectal surgery practice and identify predictors of ERAS utilization. METHODS A survey of general surgeons identified using the Ontario College of Physicians and Surgeons database was conducted. Information on basic demographic characteristics, utilization of ERAS and predictors of ERAS implementation was collected. Nine ERAS behaviours were analyzed. Multivariable analysis was used to determine effects of demographic, hospital and surgeon covariates on ERAS utilization. RESULTS Seven hundred and ninety-seven general surgeons were invited to participate in the survey, and 235 general surgeons representing 84 Ontario hospitals responded (30% response rate). Surgeons practising in academic settings and in large community hospitals represented 30% and 47% of the respondents, respectively. A total of 20% of the respondents used all 9 ERAS behaviours consistently. Rates of diet advancement on postoperative day 0, intravenous fluid restriction and having catheter and line procedures were significantly higher among respondents who adhered to ERAS protocols than among those who did not (74% v. 54%, p = 0.004; 92% v. 80%, p = 0.01; and 91% v. 41%, p < 0.001, respectively). Respondents from academic settings reported practising nearly 1 more ERAS behaviour than those from small community hospitals (odds ratio [OR] 0.86, 95% confidence interval [CI] 0.42 to 1.31, p < 0.001). Multivariable analysis demonstrated that colorectal fellowship training or exposure to ERAS during training did not significantly affect ERAS behaviour utilization (OR 0.32, 95% CI -0.31 to 0.94, p = 0.16; OR 0.28, 95% CI -0.26 to 0.82, p = 0.16, respectively). CONCLUSION Substantial practice variation in colorectal surgery still exists. Individual ERAS principles are commonly followed; however, ERAS behaviours are not widely formalized into hospital protocols.
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Affiliation(s)
| | | | - Sara Lethbridge
- From the Department of Surgery, McMaster University, Hamilton, Ont
| | - Shawn Forbes
- From the Department of Surgery, McMaster University, Hamilton, Ont
| | - Cagla Eskicioglu
- From the Department of Surgery, McMaster University, Hamilton, Ont
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Doumouras AG, Hong D, Lee Y, Tarride JE, Paterson JM, Anvari M. Association Between Bariatric Surgery and All-Cause Mortality: A Population-Based Matched Cohort Study in a Universal Health Care System. Ann Intern Med 2020; 173:694-703. [PMID: 32805135 DOI: 10.7326/m19-3925] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Mortality after bariatric surgery has been previously studied, but cohort selection bias, completeness of follow-up, and collection of confounders have limited the inference of results. OBJECTIVE To determine the association between bariatric surgery and all-cause mortality. DESIGN Population-based matched cohort study. SETTING Ontario, Canada. PARTICIPANTS 13 679 patients who underwent bariatric surgery from January 2010 to December 2016 and 13 679 matched nonsurgical patients. INTERVENTION Bariatric surgery. MEASUREMENTS The primary outcome was all-cause mortality, with cause-specific mortality as the secondary outcome. Patients were matched according to age, sex, body mass index, and diabetes duration. RESULTS 13 679 patients who underwent bariatric surgery were matched to 13 679 nonsurgical patients. After a median follow-up of 4.9 years, the overall mortality rate was 1.4% (n = 197) in the surgery group and 2.5% (n = 340) in the nonsurgery group, with a lower adjusted hazard ratio (HR) of overall all-cause mortality (HR, 0.68 [95% CI, 0.57 to 0.81]). Patients aged 55 years or older had an absolute risk reduction of 3.3% (CI, 2.3% to 4.3%), with a lower HR of mortality in the surgery group (HR, 0.53 [CI, 0.41 to 0.69]). Observed relative effects were similar across sex; however, the observed association in absolute terms was greater in men. Surgery also was associated with lower cardiovascular mortality (HR, 0.53 [CI, 0.34 to 0.84]) and lower cancer mortality (HR, 0.54 [CI, 0.36 to 0.80]). LIMITATION The observational design limits causal inference. CONCLUSION Bariatric surgery was associated with substantially lower all-cause, cardiovascular, and cancer mortality. The lowered observed mortality of surgery was significant across most subgroups. The largest absolute effects were for men and patients aged 55 years or older. PRIMARY FUNDING SOURCE Ontario Bariatric Network.
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Affiliation(s)
- Aristithes G Doumouras
- Center for Health Economics and Policy Analysis, McMaster University and Centre for Minimal Access Surgery, St. Joseph's Healthcare, McMaster University, Hamilton, and ICES, Toronto, Ontario, Canada (A.G.D.)
| | - Dennis Hong
- McMaster University and Centre for Minimal Access Surgery, St. Joseph's Healthcare, McMaster University, Hamilton, and ICES, Toronto, Ontario, Canada (D.H., M.A.)
| | - Yung Lee
- McMaster University and Centre for Minimal Access Surgery, St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada (Y.L.)
| | - Jean-Eric Tarride
- Programs for Assessment of Technology in Health, The Research Institute of St. Joe's Hamilton, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada (J.T.)
| | - J Michael Paterson
- ICES and Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, and McMaster University, Hamilton, Ontario, Canada (J.M.P.)
| | - Mehran Anvari
- McMaster University and Centre for Minimal Access Surgery, St. Joseph's Healthcare, McMaster University, Hamilton, and ICES, Toronto, Ontario, Canada (D.H., M.A.)
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Govind SK, Doumouras AG, Nenshi R, Hong D. Geographic Variation in Appendiceal Perforation Rates in Canada: a Population-Based Cohort Study. J Gastrointest Surg 2020; 24:2620-2627. [PMID: 31792897 DOI: 10.1007/s11605-019-04434-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 10/19/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND We hypothesized that patients living in rural neighborhoods experience delayed access to surgical services manifesting in increased appendiceal perforation rates in cases of appendicitis. METHODS This population-based cohort study included adult patients with acute appendicitis in Canada (excluding Quebec) between April 2008 and March 2015. The main outcome of interest was rate of perforation. Predictors of interest included socioeconomic, geographic, and individual predictors of perforation. Spatial analysis was used to analyze spatial clustering of perforation. RESULTS We identified 143,195 patients throughout the course of the study. The average perforation rate across our study was 35.9% (n = 51,456). Cluster analysis identified 286 (24%) neighborhoods with perforation rates greater than the average. Rural neighborhoods had a 1.89 times higher odds of being in a high perforation cluster (95% CI 1.08-3.08, p = 0.024). Compared to neighborhoods > 75 km from the admitting hospital, closer neighborhoods were less likely to be in a high perforation cluster (0-35 km OR 0.64, 95% CI 0.38-0.98, p = 0.049; 36-75 km OR 0.60, 95% CI 0.37-0.92, p = 0.019). Patients admitted to small community hospitals had a 0.51 times lower odds of perforation than those admitted to academic centers (95% CI 0.47-0.54, p < 0.001) and those who lived in high perforation clusters had a 1.42 times higher odds of perforation (95% CI 1.39-1.46, p < 0.001). CONCLUSION Neighborhoods located far from hospitals have increased appendiceal perforation rates. Also, patients with appendicitis treated at small community hospitals have significantly lower odds of perforation. From a policy point of view, patients with symptoms of appendicitis can be safely treated at the nearest hospital.
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Affiliation(s)
- Shaylan K Govind
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of General Surgery, Department of Surgery, St. Joseph Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada
| | - Rahima Nenshi
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of General Surgery, Department of Surgery, St. Joseph Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada. .,Division of General Surgery, Department of Surgery, St. Joseph Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada.
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Tarride JE, Doumouras AG, Hong D, Paterson JM, Tibebu S, Perez R, Ma J, Taylor VH, Xie F, Boudreau V, Pullenayegum E, Urbach DR, Anvari M. Association of Roux-en-Y Gastric Bypass With Postoperative Health Care Use and Expenditures in Canada. JAMA Surg 2020; 155:e201985. [PMID: 32697298 DOI: 10.1001/jamasurg.2020.1985] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Importance Results of previous studies are mixed regarding the economic implications of a Roux-en-Y gastric bypass (RYGB). Objective To assess the 5-year incremental health care use and expenditures after RYGB. Design, Setting, and Participants This population-based cohort study conducted in Ontario, Canada, used a difference-in-differences approach to compare health care use and expenditures between patients who underwent a publicly funded RYGB from March 1, 2010, to March 31, 2013, and propensity score-matched control individuals who did not undergo a surgical bariatric procedure. The study period allowed for a minimum 60 months of follow-up because, at that time, the most recent date for which administrative data on health care and expenditures were available was March 31, 2018. Data sources included the Ontario Bariatric Registry linked to several Ontario health administrative databases and the Electronic Medical Record Administrative Data Linked Database. Health care use and expenditures data for 5 years before and 5 years after the index date (procedure date for RYGB group; random date for controls) were analyzed. Data analyses were performed March 12, 2019, to March 10, 2020. Intervention RYGB procedure. Main Outcomes and Measures The primary outcome was total health care expenditures. Results The final propensity score-matched cohorts comprised 1587 individuals in the RYGB group (mean [SD] age, 47 [10.2] years) and 1587 controls (mean [SD] age, 47 [12.2] years); each group had 1228 women (77.4%) and a mean body mass index (calculated as weight in kilograms divided by height in meters squared) of 46. Mean total health care expenditures (2017 Canadian dollars) per patient in the RYGB group increased from CAD $15 594 (95% CI, CAD $14 743 to CAD $16 614) (US $12 008 [95% CI, US $11 353 to US $12 794]) in the 5 years before the procedure to CAD $30 389 (95% CI, CAD $28 789 to CAD $32 232) (US $23 401 [95% CI, US $22 169 to US $24 821]) over the 5 years after the procedure, a difference of CAD $14 795 (95% CI, CAD $13 172 to CAD $16 480) (US $11 393 [95% CI, US $10 143 to US $12 691]). For the control group, mean total health care expenditures per individual increased from CAD $16 109 (95% CI, CAD $14 727 to CAD $17 591) (US $12 405 [95% CI, US $11 341 to US $13 546]) 5 years before the index date to CAD $20 073 (95% CI, CAD $18 147 to CAD $22 169) (US $15 457 [95% CI, US $13 974 to US $17 071]) 5 years after the date, a difference of CAD $3964 (95% CI, CAD $2250 to CAD $5875) (US $3053 [95% CI, US $1733 to US $4524]). Overall, the difference-in-differences estimate of the net cost of RYGB was CAD $10 831 (95% CI, CAD $8252 to CAD $13 283) (US $8341 [95% CI, $6355 to $10 229]) over the 5-year period. This amount excluded the mean (SD) cost associated with the index date: CAD $6501 (CAD $1087) (US $5006 [US $837]) for the RYGB cohort and CAD $9 (CAD $72) (US $7 [US $55]) for the controls. The cost differential was primarily associated with increased hospitalizations in the first months immediately after RYGB. Expenditures leveled off in year 3 after the index date; differences in total expenditures between the RYGB and control cohorts were not statistically significantly different in years 4 and 5. Conclusions and Relevance Health care expenditures in the 3 years after publicly funded RYGB were higher in patients who underwent the procedure than in control individuals, but the costs were similar thereafter. This finding suggests the need to decrease hospital and emergency department readmissions after surgical bariatric procedures because such use is associated with increased spending.
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Affiliation(s)
- Jean-Eric Tarride
- Department of Health Research Methods, Evidence and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.,Centre for Health Economics and Policy Analysis, McMaster University, Hamilton, Ontario, Canada.,Programs for Assessment of Technology in Health (PATH), The Research Institute of St. Joe's Hamilton, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.,Centre for Minimal Access Surgery, St Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.,Centre for Minimal Access Surgery, St Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada
| | - J Michael Paterson
- ICES, Toronto, Ontario, Canada.,Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.,Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
| | | | | | | | - Valerie H Taylor
- Department of Psychiatry, University of Calgary, Calgary, Alberta, Canada
| | - Feng Xie
- Department of Health Research Methods, Evidence and Impact, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada.,Centre for Health Economics and Policy Analysis, McMaster University, Hamilton, Ontario, Canada
| | - Vanessa Boudreau
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.,Centre for Minimal Access Surgery, St Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada
| | - Eleanor Pullenayegum
- Dalla Lana School of Public Health, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.,Hospital for Sick Children, Toronto, Ontario, Canada
| | - David R Urbach
- Women's College Hospital Research Institute, Departments of Surgery and Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Mehran Anvari
- Division of General Surgery, McMaster University, Hamilton, Ontario, Canada.,Centre for Minimal Access Surgery, St Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada.,ICES, Toronto, Ontario, Canada
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Lee Y, Tian C, Lovrics O, Soon MS, Doumouras AG, Anvari M, Hong D. Bariatric surgery before, during, and after liver transplantation: a systematic review and meta-analysis. Surg Obes Relat Dis 2020; 16:1336-1347. [DOI: 10.1016/j.soard.2020.05.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/09/2020] [Accepted: 05/13/2020] [Indexed: 12/18/2022]
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Meschino MT, Giles AE, Rice TJ, Saddik M, Doumouras AG, Nenshi R, Allen L, Vogt K, Engels PT. Operative timing is associated with increased morbidity and mortality in patients undergoing emergency general surgery: a multisite study of emergency general services in a single academic network. Can J Surg 2020; 63:E321-E328. [PMID: 32644317 DOI: 10.1503/cjs.012919] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background Despite the widespread implementation of the acute care surgery (ACS) model, limited access to operating room time represents a barrier to the optimal delivery of emergency general surgery (EGS) care. The objective of this study was to describe the effect of operative timing on outcomes in EGS in a network of teaching hospitals. Methods We conducted a retrospective review of EGS operations performed at 3 teaching hospitals in a single academic network. Time of operation was categorized as daytime (8 am to 5 pm), after hours (5 pm to 11 pm) or overnight (11 pm to 8 am). Time to operation was calculated as the interval from admission to operative start time and categorized as less than 24 hours, 24-72 hours and greater than 72 hours. Results After we excluded nonindex cases, trauma cases and cases occurring more than 5 days after admission, 1505 EGS cases were included. We found that 39.0% of operations were performed in the daytime, 46.3% after hours and 14.8% overnight. In terms of time to operation, 52.3% of operations were performed within 24 hours of admission, 33.4% in 24-72 hours and 14.3% in more than 72 hours. The overall complication rate was 20.6% (310 patients) and the overall mortality rate was 3.8% (57 patients). After multivariable analysis, time to operation more than 72 hours after admission was independently associated with increased odds of morbidity (odds ratio [OR] 1.64, 95% confidence interval [CI] 1.09-2.47), while overnight operating was associated with increased odds of death (OR 3.15, 95% CI 1.29-7.70). Conclusion Increasing time from admission to operation and overnight operating were associated with greater morbidity and mortality, respectively, for EGS patients. Strategies to provide timely access to the operating room should be considered to optimize care in an ACS model.
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Affiliation(s)
- Michael T Meschino
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Andrew E Giles
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Timothy J Rice
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Maisa Saddik
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Aristithes G Doumouras
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Rahima Nenshi
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Laura Allen
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Kelly Vogt
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
| | - Paul T Engels
- From the Department of Surgery, McMaster University, Hamilton, Ont. (Meschino, Giles, Rice, Saddik, Doumouras, Nenshi, Engels); and the Department of Surgery, Western University, London, Ont. (Allen, Vogt)
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McKechnie T, Lee Y, Kruse C, Qiu Y, Springer JE, Doumouras AG, Hong D, Eskicioglu C. Operative management of colonic diverticular disease in the setting of immunosuppression: A systematic review and meta-analysis. Am J Surg 2020; 221:72-85. [PMID: 32814626 DOI: 10.1016/j.amjsurg.2020.06.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 06/25/2020] [Accepted: 06/25/2020] [Indexed: 12/29/2022]
Abstract
BACKGROUND Immunosuppressed patients with diverticular disease are at higher risk of postoperative complications, however reported rates have varied. The aim of this study is to compare postoperative outcomes in immunosuppressed and immunocompetent patients undergoing surgery for diverticular disease. METHODS Medline, EMBASE, and CENTRAL were searched. Articles were included if they compared immunosuppressed and immunocompetent patients undergoing surgery for diverticular disease. RESULTS From 204 citations, 11 studies with 2,977 immunosuppressed patients and 780,630 immunocompetent patients were included. Mortality was greater in immunosuppressed patients compared to immunocompetent patients for emergent surgery (RR 1.91, 95%CI 1.24-2.95, p < 0.01), but not elective surgery (RR 1.70, 95%CI 0.14-20.47, p = 0.68). Morbidity was greater in immunosuppressed patients compared to immunocompetent patients for elective surgery (RR 2.18, 95%CI 1.02-4.65, p = 0.04), but not emergent surgery (RR 1.40, 95%CI 0.68-2.90, p = 0.37). CONCLUSIONS Increased consideration for elective operation may preclude the need for emergent surgery and the associated increase in postoperative mortality.
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Affiliation(s)
- Tyler McKechnie
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
| | - Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
| | - Colin Kruse
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada.
| | - Yuan Qiu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada.
| | - Jeremy E Springer
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada.
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada.
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada.
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Abstract
PURPOSE The purpose of this study was to conduct a systematic review of the existing literature to determine the effect of bariatric surgery on various pharmacokinetic parameters of oral antibiotic absorption as well as overall patient outcomes. MATERIALS AND METHODS MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL) were searched up to February 2020. Outcomes of interest included change in pharmacokinetic parameters of oral antibiotics administered to patients following bariatric surgery, using variables such as maximum plasma concentration (Cmax), time to reach maximum plasma concentration (Tmax), area under the concentration-time curve (AUC), clearance, and volume of distribution. MINORS and Cochrane risk of bias tools were used to assess quality of evidence. RESULTS Ten studies with 100 patients assessing 8 oral antibiotics were included. The majority (77%) of patients underwent Roux-en-Y gastric bypass (RYGB), with fewer undergoing ventral banded gastroplasty (VBG) (14%), jejunoileostomy (6%), and jejunoileal bypass (3%). Antibiotic classes investigated included beta-lactams (5 studies), fluoroquinolones (2 studies), macrolides (2 studies), and oxazolidinones (1 study). Heterogeneity between studies precluded meaningful pooling or meta-analysis of data. Overall risk of bias was fair. CONCLUSION Patients given oral beta-lactams and macrolides warrant close monitoring due to unpredictable absorption post-bariatric surgery, whereas oral fluoroquinolones and linezolid may not be affected. Several studies also showed decreased absorption following RYGB, as well as lower serum exposure in patients with obesity compared to non-obese controls. Clinicians should monitor patients on a case-by-case basis for signs of antibiotic failure or toxicity and reassess dosing accordingly.
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Affiliation(s)
- Sama Anvari
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Megan Lam
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
- Centre for Minimal Access Surgery (CMAS), St. Joseph's Healthcare, McMaster University, Hamilton, Ontario, Canada.
- Division of General Surgery, St. Joseph's Healthcare, Room G814, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada.
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Lee Y, Yu J, Doumouras AG, Ashoorion V, Gmora S, Anvari M, Hong D. Intravenous Acetaminophen Versus Placebo in Post-bariatric Surgery Multimodal Pain Management: a Meta-analysis of Randomized Controlled Trials. Obes Surg 2020; 29:1420-1428. [PMID: 30726545 DOI: 10.1007/s11695-019-03732-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Pain management after bariatric surgery is challenging. Recent trials have been exploring the role of intravenous (IV) acetaminophen in multimodal analgesic therapy. This systematic review and meta-analysis assessed the effect of IV acetaminophen compared to placebo for pain management after bariatric surgery. METHODS A comprehensive search of MEDLINE, Embase, CENTRAL, and PubMed databases were performed. Randomized controlled trials (RCTs) comparing IV acetaminophen to placebo as part of multimodal pain management after bariatric surgery in patients with obesity were included. Key outcomes were analyzed using random-effects meta-analysis, and the certainty of evidence was assessed using the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE). RESULTS Four RCTs including 349 patients met the inclusion criteria, of whom 175 were provided IV acetaminophen and 174 were provided placebo. Patients given IV acetaminophen demonstrated a lower postoperative pain score (mean difference (MD) - 0.66, 95% CI - 1.03 to - 0.28, P < 0.001) 24 h after surgery and lower postoperative opioid use (MD - 6.44, 95% CI - 9.26 to - 3.61, P < 0.001; I2 = 0%) in morphine equivalent doses (MED) within 24 h compared with the placebo group. There was no significant difference in length of stay between groups (MD - 0.26, 95% CI - 0.55 to 0.03, P = 0.08). CONCLUSIONS The use of IV acetaminophen after bariatric surgery is effective in reducing pain score after 24 h and postoperative opioid doses, but not length of stay. Provided the benefits of IV acetaminophen, its addition to postoperative care and enhanced recovery programs may be warranted.
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Affiliation(s)
- Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - James Yu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, St. Joseph's Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada
| | - Vahid Ashoorion
- Department of Health Research Methods, Evidence, and Impact (HEI), McMaster University, Hamilton, Ontario, Canada
| | - Scott Gmora
- Division of General Surgery, Department of Surgery, McMaster University, St. Joseph's Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada
| | - Mehran Anvari
- Division of General Surgery, Department of Surgery, McMaster University, St. Joseph's Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, St. Joseph's Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada.
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Springer JE, Doumouras AG, Eskicioglu C, Hong D. Regional Variation in the Utilization of Laparoscopy for the Treatment of Rectal Cancer: The Importance of Fellowship Training Sites. Ann Surg Oncol 2019; 27:2478-2486. [DOI: 10.1245/s10434-019-08115-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Indexed: 01/22/2023]
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Lee Y, McKechnie T, Springer JE, Doumouras AG, Hong D, Eskicioglu C. Optimal timing of urinary catheter removal following pelvic colorectal surgery: a systematic review and meta-analysis. Int J Colorectal Dis 2019; 34:2011-2021. [PMID: 31707560 DOI: 10.1007/s00384-019-03404-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/11/2019] [Indexed: 02/04/2023]
Abstract
PURPOSE Acute urinary retention (AUR) is a common postoperative complication in colorectal surgery. In pelvic colorectal operations, the optimal duration for postoperative urinary catheter use is controversial. This systematic review and meta-analysis aims to compare early (POD 1), intermediate (POD 3), and late (POD 5) urinary catheter removal. METHODS Medline, EMBASE, CENTRAL, and PubMed databases were searched. Articles were eligible for inclusion if they compared patients with urinary catheter removal on POD 1 or earlier to patients with urinary catheter removal on POD 2 or later in major pelvic colorectal surgeries. The primary outcome was rate of postoperative AUR. The secondary outcome was rates of postoperative urinary tract infection (UTI). RESULTS From 691 relevant citations, five studies with 928 patients were included. Comparison of urinary catheter removal on POD 1 versus POD 3 demonstrated no significant difference in rate of urinary retention (RR 1.36, 95%CI 0.83-2.21, P = 0.22); however, compared to POD 5, rates of AUR were significantly higher (RR 2.58, 95%CI 1.51-4.40, P = 0.0005). Rates of UTI were not significantly different between POD 1 and POD 3 urinary catheter removal (RR 0.40, 95%CI 0.05-3.71, P = 0.45), but removal on POD 5 significantly increased risk of UTI compared to POD 1 (RR 0.50, 95%CI 0.31-0.81, P = 0.005). CONCLUSION Risk of AUR can be minimized with late postoperative urinary catheter removal compared to early removal, but at the cost of increased risk of UTI. Patient-specific factors should be taken into consideration when deciding upon optimal duration of postoperative urinary catheterization.
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Affiliation(s)
- Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Tyler McKechnie
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Jeremy E Springer
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
- Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
- Division of General Surgery, Department of Surgery, St. Joseph Healthcare, Hamilton, Ontario, Canada.
- Division of General Surgery Department of Surgery, St. Joseph's Healthcare, McMaster University, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada.
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Doumouras AG, Albacete S, Mann A, Gmora S, Anvari M, Hong D. A Longitudinal Analysis of Wait Times for Bariatric Surgery in a Publicly Funded, Regionalized Bariatric Care System. Obes Surg 2019; 30:961-968. [DOI: 10.1007/s11695-019-04259-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Akhtar-Danesh GG, Doumouras AG, Bos C, Flageole H, Hong D. Factors Associated With Outcomes and Costs After Pediatric Laparoscopic Cholecystectomy. JAMA Surg 2019; 153:551-557. [PMID: 29344632 DOI: 10.1001/jamasurg.2017.5461] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Importance The prevalence of pediatric cholelithiasis is increasing with the epidemic of childhood obesity. With this rise, the outcomes and costs of pediatric laparoscopic cholecystectomy become an important public health and economic concern. Objective To assess patient and health system factors associated with the outcomes and costs after laparoscopic cholecystectomy among Canadian children. Design, Setting, and Participants This was a retrospective, population-based study of children 17 years and younger undergoing laparoscopic cholecystectomy from April 1, 2008, until March 31, 2015. The data source was the Canadian Institute for Health Information. The Canadian Institute for Health Information Discharge Abstract Database includes data from all Canadian hospitals. The analysis was limited to inpatient cholecystectomies. All Canadian children undergoing laparoscopic cholecystectomy were included. Exposure The exposure in this study was laparoscopic cholecystectomy. Main Outcomes and Measures The primary outcome was all-cause morbidity, a composite outcome of any complication that prolonged length of stay by 24 hours or required a second, unplanned procedure. The cost of the index admission was also calculated as a secondary outcome. These outcomes of interest were determined before data analysis. Odds ratios and 95% CIs were estimated using multilevel logistic regression models. Results During the study period, 3519 laparoscopic cholecystectomies were performed; of these, 79.1% (n = 2785) were in girls, and 98.0% (n = 3450) were for gallstone disease. The overall morbidity rate was 3.9% (n = 137). After adjustment, patients with comorbidities were more susceptible to morbidity (odds ratio, 2.68; 95% CI, 1.78-3.86; P < .001). Operations for gallstones were less morbid. High-volume general surgeons had lower morbidity rates compared with low-volume pediatric surgeons (odds ratio, 0.32; 95% CI, 0.12-0.69; P = .005) independent of pediatric volumes. The mean (SD) unadjusted cost of a laparoscopic cholecystectomy was $4115 ($7273). Operative indication, complications, comorbidities, emergency admission, and surgeon volume were associated with cost. Conclusions and Relevance The high-volume nature of adult general surgery translated to lower morbidity and cost after pediatric laparoscopic cholecystectomy, suggesting that adult volume is associated with pediatric outcomes. As the rate of pediatric gallstone disease increases, surgeon volume, rather than specialty training, should be considered when pursuing operative management.
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Affiliation(s)
| | - Aristithes G Doumouras
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of General Surgery, Department of Surgery, St Joseph's Healthcare, Hamilton, Ontario, Canada
| | - Cecily Bos
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Helene Flageole
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of Pediatric Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of General Surgery, Department of Surgery, St Joseph's Healthcare, Hamilton, Ontario, Canada
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Akhtar-Danesh GG, Doumouras AG, Flageole H, Hong D. Geographic and socioeconomic predictors of perforated appendicitis: A national Canadian cohort study. J Pediatr Surg 2019; 54:1804-1808. [PMID: 30482382 DOI: 10.1016/j.jpedsurg.2018.10.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 10/10/2018] [Accepted: 10/16/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND/PURPOSE Appendiceal perforation significantly impacts the outcomes of pediatric appendicitis. While socioeconomic status affects perforation risk in the United States, these effects should dissipate in a universal healthcare system. The specific spatial patterns associated with perforation have also never been delineated. This study examined the effect of geography and SES on appendiceal perforation in Canada's universal healthcare system. METHODS Using administrative databases, Canadian children with appendicitis from 2008 to 2015 were identified. Perforation rates were examined based on rurality, distance from treating hospital, and SES. A spatial analysis identified neighborhoods with high perforation rates. Predictors of high perforation clusters were determined using logistic regression. RESULTS Over the study period, 43,055 children with appendicitis were identified. The overall perforation rate was 31.5%. Rural neighborhoods and those >125 km from the treating hospital were more likely to be within a high perforation cluster (OR 2.39, 95%CI 1.31-4. 02, p = 0.001; and OR 2.55, 95%CI 1.35-4.47, p = 0.001, respectively). Children in high perforation clusters were more likely to suffer complications. SES was not associated with perforation rates. CONCLUSIONS In this population-based study, appendiceal perforation was not a function of SES, but a spatial phenomenon. These findings highlight disparities in access to surgical care in Canada. LEVEL OF EVIDENCE Prognosis study, level II.
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Affiliation(s)
- Gileh-Gol Akhtar-Danesh
- Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada.
| | - Aristithes G Doumouras
- Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada; Division of General Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada.
| | - Helene Flageole
- Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada; Division of Pediatric Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada.
| | - Dennis Hong
- Department of Surgery, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada; Division of General Surgery, St. Joseph's Healthcare, 50 Charlton Avenue East, Hamilton, Ontario, L8N 4A6, Canada.
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Lovrics O, Doumouras AG, Gmora S, Anvari M, Hong D. Metabolic outcomes after bariatric surgery for Indigenous patients in Ontario. Surg Obes Relat Dis 2019; 15:1340-1347. [PMID: 31300284 DOI: 10.1016/j.soard.2019.05.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/05/2019] [Accepted: 05/21/2019] [Indexed: 01/01/2023]
Abstract
BACKGROUND In 2013, 18% of Canadian adults had obesity (body mass index [BMI] >30 kg/m2), compared with 25.7% of Canada's Indigenous population. Bariatric surgery is an effective treatment for obesity, but has not been studied in Canadian Indigenous populations. OBJECTIVES To determine the effects of bariatric surgery in the Indigenous Ontario population. SETTING Multicenter data from the publicly funded Ontario bariatric program and registry. METHODS Prospectively collected data using all surgical patients between March 2010 and 2018 was included in initial analysis and included the following postoperative outcomes: diabetes, hypertension, and gastroesophageal reflux disease. Demographic characteristics, baseline characteristics, and univariate outcomes were assessed using Pearson Χ2 or t tests. Multivariable regression for BMI change was used with complete case analysis and multiple imputation. RESULTS Of 16,629 individuals initially identified, 338 self-identified as Indigenous, 13,502 as Non-Indigenous, and 2789 omitted ethnicity and were excluded. Baseline demographic characteristics were not statistically different; rates of hypertension (P = .03) and diabetes (P < .001) were higher in the Indigenous population. Univariable analysis showed similar 1-year BMI change (Indigenous: 15.8 ± 6.0 kg/m2; Non-Indigenous: 16.1 ± 5.6 kg/m2, P = .362). After adjustment, BMI change was not different between groups at 6 months (effect size = .07, 95% confidence interval -.45 to .58, P = .803) and 1 year (effect size = -.24, 95% confidence interval -.93 to .45, P = .489). Rates of co-morbidities were similar at 1 year between the 2 populations, despite differences at baseline. Six-month and 1-year follow-up rates were higher in the Non-Indigenous population (P < .001, P = .005, respectively). CONCLUSIONS Weight loss and resolution of obesity-related co-morbidities are similar in Indigenous and Non-Indigenous patients. Access to surgery, patient selection, and long-term results merit further investigation.
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Affiliation(s)
- Olivia Lovrics
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada.
| | - Aristithes G Doumouras
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Scott Gmora
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Mehran Anvari
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Lee Y, Yu J, Tikkinen KA, Pędziwiatr M, Major P, Aditya I, Krakowsky Y, Doumouras AG, Gmora S, Anvari M, Hong D. The impact of bariatric surgery on urinary incontinence: a systematic review and meta-analysis. BJU Int 2019; 124:917-934. [DOI: 10.1111/bju.14829] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Yung Lee
- Michael G. DeGroote School of Medicine; McMaster University; Hamilton ON Canada
- Division of General Surgery; Department of Surgery; McMaster University; Hamilton ON Canada
- Centre for Minimal Access Surgery (CMAS); St. Joseph's Healthcare; McMaster University; Hamilton ON Canada
| | - James Yu
- Division of General Surgery; Department of Surgery; McMaster University; Hamilton ON Canada
- Centre for Minimal Access Surgery (CMAS); St. Joseph's Healthcare; McMaster University; Hamilton ON Canada
| | - Kari A.O. Tikkinen
- Departments of Urology and Public Health; University of Helsinki and Helsinki University Hospital; Helsinki Finland
| | - Michał Pędziwiatr
- 2nd Department of General Surgery; Jagiellonian University; Krakow Poland
- Centre for Research, Training and Innovation in Surgery (CERTAIN Surgery); Krakow Poland
| | - Piotr Major
- 2nd Department of General Surgery; Jagiellonian University; Krakow Poland
- Centre for Research, Training and Innovation in Surgery (CERTAIN Surgery); Krakow Poland
| | - Ishan Aditya
- Faculty of Medicine; University of Toronto; Toronto ON Canada
| | - Yonah Krakowsky
- Division of Urology; Department of Surgery; Women's College Hospital and Sinai Health System; University of Toronto; Toronto ON Canada
| | - Aristithes G. Doumouras
- Division of General Surgery; Department of Surgery; McMaster University; Hamilton ON Canada
- Centre for Minimal Access Surgery (CMAS); St. Joseph's Healthcare; McMaster University; Hamilton ON Canada
| | - Scott Gmora
- Division of General Surgery; Department of Surgery; McMaster University; Hamilton ON Canada
- Centre for Minimal Access Surgery (CMAS); St. Joseph's Healthcare; McMaster University; Hamilton ON Canada
| | - Mehran Anvari
- Division of General Surgery; Department of Surgery; McMaster University; Hamilton ON Canada
- Centre for Minimal Access Surgery (CMAS); St. Joseph's Healthcare; McMaster University; Hamilton ON Canada
| | - Dennis Hong
- Division of General Surgery; Department of Surgery; McMaster University; Hamilton ON Canada
- Centre for Minimal Access Surgery (CMAS); St. Joseph's Healthcare; McMaster University; Hamilton ON Canada
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Lee JK, Doumouras AG, Springer JE, Eskicioglu C, Amin N, Cadeddu M, Hong D. Examining the transferability of colon and rectal operative experience on outcomes following laparoscopic rectal surgery. Surg Endosc 2019; 34:1231-1236. [PMID: 31183793 DOI: 10.1007/s00464-019-06885-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 05/31/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND Laparoscopic rectal surgery is technically challenging and often low volume. Alternatively, colon resections utilize similar advanced laparoscopic skills and are more common but it is unknown whether this experience affects laparoscopic rectal surgery outcomes. The purpose of this paper is to determine the volume-outcome relationship between several colorectal procedures and laparoscopic rectal surgery outcomes. METHODS This was a population-based retrospective cohort of all colorectal surgeries with primary anastomoses performed across Canada (excluding Quebec) between April 2008 and March 2015. Patient characteristics, comorbidities, procedures, and discharge details were collected from the Canadian Institute for Health Information. Volumes for common colorectal procedures were calculated for individual surgeons. All-cause morbidity, defined as complications arising during the index admission and contributing to an increased length of stay by more than 24 h, was the primary outcome examined. RESULTS A total of 5323 laparoscopic rectal surgery cases and 108,034 colorectal cases, between 180 hospitals and 620 surgeons, were identified. Data analysis demonstrated that high-volume laparoscopic rectal surgeons (OR 0.77, CI 0.61-0.96, p = 0.020) and high-volume open rectal surgeons (OR 0.76, CI 0.61-0.93, p = 0.009) significantly reduced all-cause morbidity. Conversely, surgeon volumes for laparoscopic and open colon cases had no effect on laparoscopic rectal outcomes. CONCLUSION High-volume surgeon status in laparoscopic and open rectal surgery are important predictors of all-cause morbidity after laparoscopic rectal surgery, while laparoscopic colon surgery volumes did not impact outcomes. This may reflect more dissimilarity between colon and rectal cases and less transferability of advanced laparoscopic skills than previously thought.
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Affiliation(s)
- Jennie K Lee
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Aristithes G Doumouras
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Jeremy E Springer
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Cagla Eskicioglu
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Nalin Amin
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Margherita Cadeddu
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada
| | - Dennis Hong
- Department of Surgery, Division of General Surgery, McMaster University, Hamilton, ON, Canada.
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Lee Y, Doumouras AG, Yu J, Brar K, Banfield L, Gmora S, Anvari M, Hong D. Complete Resolution of Nonalcoholic Fatty Liver Disease After Bariatric Surgery: A Systematic Review and Meta-analysis. Clin Gastroenterol Hepatol 2019; 17:1040-1060.e11. [PMID: 30326299 DOI: 10.1016/j.cgh.2018.10.017] [Citation(s) in RCA: 199] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 09/27/2018] [Accepted: 10/01/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Bariatric surgery has been reported to lead to complete resolution of nonalcoholic fatty liver disease (NAFLD) following the sustained weight loss induced in obese patients. We performed a systematic review and meta-analysis to evaluate the effects of bariatric surgery on NAFLD in obese patients. METHODS We searched MEDLINE, EMBASE, CENTRAL, and Web of Science databases through May 2018 for studies that compared liver biopsy results before and after bariatric surgery in obese patients. Primary outcomes were biopsy-confirmed resolution of NAFLD and NAFLD activity score. Secondary outcomes were worsening of NAFLD after surgery and liver volume. The Grading of Recommendations, Assessment, Development, and Evidence approach was conducted to assess overall quality of evidence. RESULTS We analyzed data from 32 cohort studies comprising 3093 biopsy specimens. Bariatric surgery resulted in a biopsy-confirmed resolution of steatosis in 66% of patients (95% CI, 56%-75%), inflammation in 50% (95% CI, 35%-64%), ballooning degeneration in 76% (95% CI, 64%-86%), and fibrosis in 40% (95% CI, 29%-51%). Patients' mean NAFLD activity score was reduced significantly after bariatric surgery (mean difference, 2.39; 95% CI, 1.58-3.20; P < .001). However, bariatric surgery resulted in new or worsening features of NAFLD, such as fibrosis, in 12% of patients (95% CI, 5%-20%). The overall Grading of Recommendations, Assessment, Development, and Evidence quality of evidence was very low. CONCLUSIONS Through this systematic review and meta-analysis, we found that bariatric surgery leads to complete resolution of NAFLD in obese patients. However, some patients develop new or worsened features of NAFLD. Randomized controlled trials are needed to further examine the therapeutic benefits of bariatric surgery for patients with NAFLD.
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Affiliation(s)
- Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - James Yu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Karanbir Brar
- Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Laura Banfield
- Health Sciences Library, McMaster University, Hamilton, Ontario, Canada
| | - Scott Gmora
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Mehran Anvari
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
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Doumouras AG, Lee Y, Hong D. Reply. Clin Gastroenterol Hepatol 2019; 17:1007. [PMID: 30902231 DOI: 10.1016/j.cgh.2018.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Accepted: 11/14/2018] [Indexed: 02/07/2023]
Affiliation(s)
- Aristithes G Doumouras
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Yung Lee
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada; Department of Surgery, McMaster University, Hamilton, Ontario, Canada
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Lee Y, Brar K, Doumouras AG, Hong D. Peroral endoscopic myotomy (POEM) for the treatment of pediatric achalasia: a systematic review and meta-analysis. Surg Endosc 2019; 33:1710-1720. [PMID: 30767141 DOI: 10.1007/s00464-019-06701-5] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 02/06/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Achalasia is a rare primary esophageal dysmotility disorder in children. Peroral endoscopic myotomy (POEM) is a novel endoscopic technique which has shown promising results for treating achalasia in adults. However, limited data on efficacy and safety in pediatric patients are available. We performed a systematic review and meta-analysis to evaluate the efficacy and safety of POEM in pediatric achalasia. METHODS We searched MEDLINE, Embase, PubMed, and Web of Science databases through July 2018. Studies were eligible for inclusion if they conducted POEM in pediatric patients. Main outcomes were Eckardt score and lower esophageal sphincter (LES) pressure before and after POEM. Secondary outcomes were clinical success rate and adverse events associated with POEM. Two reviewers independently reviewed the studies, collected data, and assessed quality of evidence using Methodological Index for Non-Randomized Studies (MINORS). Pooled estimates were calculated using random effects meta-analyses. Heterogeneity was quantified using the inconsistency statistic, and funnel plot was used to assess publication bias. RESULTS A total of 12 studies with 146 pediatric patients (53.68% female) underwent POEM for the treatment of achalasia (mean duration of disease of 19.48 months). There was a significant reduction in Eckardt score by 6.88 points (Mean Difference (MD) 6.88, 95% confidence interval (CI), 6.28-7.48, P < .001) and LES pressure by 20.73 mmHg (MD 20.73, 95% CI, 15.76-25.70, P < .001) following POEM. At least 93% of the patients experienced improvement or resolution of achalasia symptoms both short and long terms after POEM, with small proportion of patients experiencing minor adverse effects which could be managed conservatively. CONCLUSIONS POEM is efficacious and safe for treating achalasia in pediatric populations. Large comparative or randomized trials are warranted to confirm the efficacy and safety of POEM compared to other surgical procedures for achalasia.
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Affiliation(s)
- Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada.,Centre for Minimal Access Surgery (CMAS), Division of General Surgery, Department of Surgery, McMaster University St. Joseph's Healthcare, 50 Charlton Avenue East Hamilton, Hamilton, ON, L8N 4A6, Canada
| | - Karanbir Brar
- Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Aristithes G Doumouras
- Centre for Minimal Access Surgery (CMAS), Division of General Surgery, Department of Surgery, McMaster University St. Joseph's Healthcare, 50 Charlton Avenue East Hamilton, Hamilton, ON, L8N 4A6, Canada
| | - Dennis Hong
- Centre for Minimal Access Surgery (CMAS), Division of General Surgery, Department of Surgery, McMaster University St. Joseph's Healthcare, 50 Charlton Avenue East Hamilton, Hamilton, ON, L8N 4A6, Canada.
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Lee Y, Ellenbogen Y, Doumouras AG, Gmora S, Anvari M, Hong D. Single- or double-anastomosis duodenal switch versus Roux-en-Y gastric bypass as a revisional procedure for sleeve gastrectomy: A systematic review and meta-analysis. Surg Obes Relat Dis 2019; 15:556-566. [PMID: 30837111 DOI: 10.1016/j.soard.2019.01.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/31/2018] [Accepted: 01/28/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Laparoscopic sleeve gastrectomy (SG) is one of the most commonly performed bariatric procedure worldwide. There is currently no consensus on which revisional procedure is best after an initial SG. OBJECTIVES To compare the efficacy and safety between single-anastomosis duodeno-ileal bypass (SADI) or biliopancreatic diversion with duodenal switch (BPD-DS) versus Roux-en-Y gastric bypass (RYGB) as a revisional procedure for SG. SETTING University Hospital, Canada. METHODS MEDLINE, Embase, Cochrane Central Register of Controlled Trials, and PubMed were searched up to August 2018. Studies were eligible for inclusion if they compared SADI or BPD-DS with RYGB as a revisional bariatric procedure for SG. Primary outcome was absolute percentage of total weight loss. Secondary outcomes were length of stay, adverse events, and improvement or resolution of co-morbidities (diabetes, hypertension, or hypercholesterolemia). Pooled mean differences were calculated using random effects meta-analysis. RESULTS Six retrospective cohort studies involving 377 patients met the inclusion criteria. The SADI/BPD-DS group achieved a significantly higher percentage of total weight loss compared with RYGB by 10.22% (95% confidence interval, -17.46 to -2.97; P = .006). However, there was significant baseline equivalence bias with 4 studies reporting higher initial body mass index (BMI) in the SADI/BPD-DS group. There were no significant differences in length of stay, adverse events, or improvement of co-morbidities between the 2 groups. CONCLUSION SADI, BPD-DS, and RYGB are safe and efficacious revisional surgeries for SG. Both SADI and RYGB are efficacious in lowering initial BMI but there is more evidence for excellent weight loss outcomes with the conversion to BPD-DS when the starting BMI is high. Further randomized trials are required for definitive conclusions.
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Affiliation(s)
- Yung Lee
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Yosef Ellenbogen
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Scott Gmora
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Mehran Anvari
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
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Bos C, Doumouras AG, Akhtar-Danesh GG, Flageole H, Hong D. A population-based cohort examining factors affecting all-cause morbidity and cost after pediatric appendectomy: Does annual adult procedure volume matter? Am J Surg 2018; 218:619-623. [PMID: 30580933 DOI: 10.1016/j.amjsurg.2018.12.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/04/2018] [Accepted: 12/13/2018] [Indexed: 11/26/2022]
Abstract
BACKGROUND The purpose of this study was to examine factors affecting morbidity and cost after pediatric appendectomy and particularly the role of adult surgical volume. MATERIALS AND METHODS This was population-based study including all pediatric patients who underwent appendectomy for appendicitis in Canada (excluding Quebec) from 2008 to 2015. All-cause morbidity was the main outcome of interest. Cost of the index admission (in 2014 Canadian dollars) was a secondary outcome. Hierarchal linear and logistic regressions were used to model the outcomes. RESULTS Overall, 41,512 patients were identified. After adjustment, younger patients (OR = 0.98/year, 95%CI 0.97-0.99, p < 0.001), patients with comorbidities (OR = 2.20, 95%CI 1.96-2.46, p < 0.001), and those with perforated appendicitis (OR = 5.95, 95%CI 5.44-6.50, p < 0.001) were more susceptible to morbidity. Annual pediatric appendectomy volume was a significant predictor of reduced morbidity (OR = 0.85/20 cases, 95%CI 0.76-0.93, p < 0.001) as was the use of laparoscopy (OR = 0.81, 95%CI 0.72-0.91, p = 0.001). Conversely, annual adult appendectomy volume conferred no benefit nor did pediatric surgery specialty training. CONCLUSION Outcomes after pediatric appendectomy are influenced by pediatric case volume, regardless of specialty training, but extra adult surgical volume confers no benefit.
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Affiliation(s)
- Cecily Bos
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | | | | | - Helene Flageole
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of Pediatric Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Dennis Hong
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada; Division of General Surgery, St. Joseph's Healthcare, Hamilton, Ontario, Canada.
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Springer JE, Doumouras AG, Nair S, Eskicioglu C, Forbes S. Does Imaging Before Percutaneous Drain Removal Affect Rates of Intra-abdominal Abscess Recurrence? J Surg Res 2018; 232:408-414. [DOI: 10.1016/j.jss.2018.06.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/04/2018] [Accepted: 06/19/2018] [Indexed: 11/28/2022]
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Springer JE, Doumouras AG, Lethbridge S, Forbes S, Eskicioglu C. A Provincial Assessment of the Barriers and Utilization of Enhanced Recovery After Colorectal Surgery. J Surg Res 2018; 235:521-528. [PMID: 30691838 DOI: 10.1016/j.jss.2018.10.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 09/06/2018] [Accepted: 10/26/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Enhanced recovery after surgery (ERAS) protocols after colorectal surgery use several perioperative, intraoperative and postoperative interventions that decrease morbidity, length of stay, and improve patient satisfaction. ERAS is increasingly being considered standard of care; however, uptake of formalized protocols remains low. The objective is to characterize the provincial rates of ERAS utilization after colorectal surgery and identify barriers and limitations to ERAS implementation. METHODS A total of 797 general surgeons were identified through the College of Physicians and Surgeons of Ontario. A survey identifying demographics, rates of ERAS utilization, and barriers to implementation was distributed. Logistic regression determined the effects of demographic and hospital covariates on ERAS utilization. RESULTS A total of 235 general surgeons representing 84 Ontario hospitals participated (response rate 29.5%). Surgeons working in academic or large community hospitals represented the majority of the cohort (30.5% and 47.2%, respectively). Multivariable analysis showed no significant effect of surgeon demographics, years in practice, or training details on ERAS protocol utilization; however, practicing in small community hospitals (compared with large and academic hospitals) was significantly associated with not using ERAS protocols (odds ratio, 0.02; 95% confidence interval, 0-0.3; P = 0.005). Over 50% of respondents used ERAS principles but did not have a formal protocol. Barriers to implementing ERAS protocols included patient variability, lack of institutional and nursing support, and poor communication with the care team. CONCLUSIONS Small community hospitals are less likely to use formal ERAS protocols; however, most Ontario surgeons are using ERAS principles after colorectal surgery. Barriers to ERAS implementation are broad and the present study has provided a pragmatic solution to change.
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Affiliation(s)
- Jeremy E Springer
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Aristithes G Doumouras
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Sara Lethbridge
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Shawn Forbes
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada
| | - Cagla Eskicioglu
- Division of General Surgery, Department of Surgery, McMaster University, Hamilton, Ontario, Canada.
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Doumouras AG, Akhtar-Danesh GG, Hong D. Optimization of Pediatric Surgical Care Is Not the Same as Regionalization-Reply. JAMA Surg 2018; 153:971-972. [PMID: 29998281 DOI: 10.1001/jamasurg.2018.2117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Aristithes G Doumouras
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of General Surgery, St Joseph's Healthcare, Hamilton, Ontario, Canada
| | | | - Dennis Hong
- Department of Surgery, McMaster University, Hamilton, Ontario, Canada.,Division of General Surgery, St Joseph's Healthcare, Hamilton, Ontario, Canada
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Doumouras AG, Saleh F, Gmora S, Anvari M, Hong D. The value of surgical experience: excess costs associated with the Roux-en-Y gastric bypass learning curve. Surg Endosc 2018; 33:1944-1951. [DOI: 10.1007/s00464-018-6472-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Accepted: 09/20/2018] [Indexed: 10/28/2022]
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