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Behman R, Auer RC, Bubis L, Xu G, Coburn NG, Martel G, Hallet J, Balaa F, Law C, Bertens KA, Abou Khalil J, Karanicolas PJ. Hepato pancreaticobiliary Resection Arginine Immuno modulation (PRIMe) trial: protocol for a randomised phase II trial of the impact of perioperative immunomodulation on immune function following resection for hepatopancreaticobiliary malignancy. BMJ Open 2024; 14:e072159. [PMID: 38580363 PMCID: PMC11002425 DOI: 10.1136/bmjopen-2023-072159] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 02/28/2024] [Indexed: 04/07/2024] Open
Abstract
INTRODUCTION Surgical stress results in immune dysfunction, predisposing patients to infections in the postoperative period and potentially increasing the risk of cancer recurrence. Perioperative immunonutrition with arginine-enhanced diets has been found to potentially improve short-term and cancer outcomes. This study seeks to measure the impact of perioperative immunomodulation on biomarkers of the immune response and perioperative outcomes following hepatopancreaticobiliary surgery. METHODS AND ANALYSIS This is a 1:1:1 randomised, controlled and blinded superiority trial of 45 patients. Baseline and perioperative variables were collected to evaluate immune function, clinical outcomes and feasibility outcomes. The primary outcome is a reduction in natural killer cell killing as measured on postoperative day 1 compared with baseline between the control and experimental cohorts. ETHICS AND DISSEMINATION This trial has been approved by the research ethics boards at participating sites and Health Canada (parent control number: 223646). Results will be distributed widely through local and international meetings, presentation, publication and ClinicalTrials.gov (identifier: NCT04549662). Any modifications to the protocol will be communicated via publications and ClinicalTrials.gov. TRIAL REGISTRATION NUMBER ClinicalTrials.gov identifier: NCT04549662.
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Affiliation(s)
- Ramy Behman
- Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Rebecca C Auer
- Cancer Research Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Lev Bubis
- Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Grace Xu
- Evaluative Clinical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Natalie G Coburn
- Surgery, University of Toronto, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Guillaume Martel
- Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
- Clinical Epidemiology Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Julie Hallet
- Surgery, University of Toronto, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Fady Balaa
- Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Calvin Law
- Surgery, University of Toronto, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | | | | | - Paul Jack Karanicolas
- Surgery, University of Toronto, Toronto, Ontario, Canada
- Evaluative Clinical Sciences, Sunnybrook Research Institute, Toronto, Ontario, Canada
- Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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Lee A, Al-Arnawoot A, Rajendran L, Lamb T, Turner A, Reid M, Rekman J, Mimeault R, Abou Khalil J, Martel G, Bertens KA, Balaa F. Feasibility and Safety of a "Shared Care" Model in Complex Hepatopancreatobiliary Surgery: A 5-year Observational Study of Outcomes in Pancreaticoduodenectomy. Ann Surg 2023; 278:994-1000. [PMID: 36805373 DOI: 10.1097/sla.0000000000005826] [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] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
OBJECTIVE To determine the safety of a fully functioning shared care model (SCM) in hepatopancreatobiliary surgery through evaluating outcomes in pancreaticoduodenectomy. BACKGROUND SCMs, where a team of surgeons share in care delivery and resource utilization, represent a surgeon-level opportunity to improve system efficiency and peer support, but concerns around clinical safety remain, especially in complex elective surgery. METHODS Patients who underwent pancreaticoduodenectomy between 2016 and 2020 were included. Adoption of shared care was demonstrated by analyzing shared care measures, including the number of surgeons encountered by patients during their care cycle, the proportion of patients with different consenting versus primary operating surgeon (POS), and the proportion of patients who met their POS on the day of surgery. Outcomes, including 30-day mortality, readmission, unplanned reoperation, sepsis, and length of stay, were collected from the institution's National Surgical Quality Improvement Program (NSQIP) database and compared with peer hospitals contributing to the pancreatectomy-specific NSQIP collaborative. RESULTS Of the 174 patients included, a median of 3 surgeons was involved throughout the patients' care cycle, 69.0% of patients had different consenting versus POS and 57.5% met their POS on the day of surgery. Major outcomes, including mortality (1.1%), sepsis (5.2%), and reoperation (7.5%), were comparable between the study group and NSQIP peer hospitals. Length of stay (10 day) was higher in place of lower readmission (13.2%) in the study group compared with peer hospitals. CONCLUSIONS SCMs are feasible in complex elective surgery without compromising patient outcomes, and wider adoption may be encouraged.
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Affiliation(s)
- Alex Lee
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Ahmed Al-Arnawoot
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Luckshi Rajendran
- Division of General Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Tyler Lamb
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Anastasia Turner
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Morgann Reid
- Institute of Health Policy, Management and Evaluation, University of Toronto, Ontario, Canada
| | - Janelle Rekman
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Richard Mimeault
- Canadian Medical Protective Association, Ottawa, Ontario, Canada
| | - Jad Abou Khalil
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Guillaume Martel
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Kimberly A Bertens
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Fady Balaa
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
- Canadian Medical Protective Association, Ottawa, Ontario, Canada
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Chen YI, Sahai A, Donatelli G, Lam E, Forbes N, Mosko J, Paquin SC, Donnellan F, Chatterjee A, Telford J, Miller C, Desilets E, Sandha G, Kenshil S, Mohamed R, May G, Gan I, Barkun J, Calo N, Nawawi A, Friedman G, Cohen A, Maniere T, Chaudhury P, Metrakos P, Zogopoulos G, Bessissow A, Khalil JA, Baffis V, Waschke K, Parent J, Soulellis C, Khashab M, Kunda R, Geraci O, Martel M, Schwartzman K, Fiore JF, Rahme E, Barkun A. Endoscopic Ultrasound-Guided Biliary Drainage of First Intent With a Lumen-Apposing Metal Stent vs Endoscopic Retrograde Cholangiopancreatography in Malignant Distal Biliary Obstruction: A Multicenter Randomized Controlled Study (ELEMENT Trial). Gastroenterology 2023; 165:1249-1261.e5. [PMID: 37549753 DOI: 10.1053/j.gastro.2023.07.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 05/25/2023] [Revised: 07/21/2023] [Accepted: 07/29/2023] [Indexed: 08/09/2023]
Abstract
BACKGROUND & AIMS Endoscopic ultrasound-guided choledochoduodenostomy with a lumen-apposing metal stent (EUS-CDS) is a promising modality for management of malignant distal biliary obstruction (MDBO) with potential for better stent patency. We compared its outcomes with endoscopic retrograde cholangiopancreatography with metal stenting (ERCP-M). METHODS In this multicenter randomized controlled trial, we recruited patients with MDBO secondary to borderline resectable, locally advanced, or unresectable peri-ampullary cancers across 10 Canadian institutions and 1 French institution. This was a superiority trial with a noninferiority assessment of technical success. Patients were randomized to EUS-CDS or ERCP-M. The primary end point was the rate of stent dysfunction at 1 year, considering competing risks of death, clinical failure, and surgical resection. Analyses were performed according to intention-to-treat principles. RESULTS From February 2019 to February 2022, 144 patients were recruited; 73 were randomized to EUS-CDS and 71 were randomized to ERCP-M. The mean (SD) procedure time was 14.0 (11.4) minutes for EUS-CDS and 23.1 (15.6) minutes for ERCP-M (P < .01); 40% of the former was performed without fluoroscopy. Technical success was achieved in 90.4% (95% CI, 81.5% to 95.3%) of EUS-CDS and 83.1% (95% CI, 72.7% to 90.1%) of ERCP-M with a risk difference of 7.3% (95% CI, -4.0% to 18.8%) indicating noninferiority. Stent dysfunction occurred in 9.6% vs 9.9% of EUS-CDS and ERCP-M cases, respectively (P = .96). No differences in adverse events, pancreaticoduodenectomy and oncologic outcomes, or quality of life were noted. CONCLUSIONS Although not superior in stent function, EUS-CDS is an efficient and safe alternative to ERCP-M in patients with MDBO. These findings provide evidence for greater adoption of EUS-CDS in clinical practice as a complementary and exchangeable first-line modality to ERCP in patients with MDBO. CLINICALTRIALS gov, Number: NCT03870386.
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Affiliation(s)
- Yen-I Chen
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada.
| | - Anand Sahai
- Service de Gastroentérologie, Centre Hospitalier de l'Université de Montréal, Montréal, Quebec, Canada
| | - Gianfranco Donatelli
- Unité d'Endoscopie Interventionnelle, Hôpital Privé des Peupliers, Paris, France
| | - Eric Lam
- Division of Gastroenterology and Hepatology, St-Paul Hospital, Vancouver, British Columbia, Canada
| | - Nauzer Forbes
- Division of Gastroenterology and Hepatology, University of Calgary, Calgary, Alberta, Canada
| | - Jeffrey Mosko
- Division of Gastroenterology, St-Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Sarto C Paquin
- Service de Gastroentérologie, Centre Hospitalier de l'Université de Montréal, Montréal, Quebec, Canada
| | - Fergal Donnellan
- Division of Gastroenterology and Hepatology, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Avijit Chatterjee
- Division of Gastroenterology and Hepatology, Ottawa Hospital, Ottawa, Ontario, Canada
| | - Jennifer Telford
- Division of Gastroenterology and Hepatology, St-Paul Hospital, Vancouver, British Columbia, Canada
| | - Corey Miller
- Division of Gastroenterology and Hepatology, Jewish General Hospital, Montreal, Quebec, Canada
| | - Etienne Desilets
- Division of Gastroenterology, Hôpital Charles-Le Moyne, Longeuil, Quebec, Canada
| | - Gurpal Sandha
- Division of Gastroenterology and Hepatology, University of Alberta Hospital, Edmonton, Alberta, Canada
| | - Sana Kenshil
- Division of Gastroenterology and Hepatology, Ottawa Hospital, Ottawa, Ontario, Canada
| | - Rachid Mohamed
- Division of Gastroenterology and Hepatology, University of Calgary, Calgary, Alberta, Canada
| | - Gary May
- Division of Gastroenterology, St-Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Ian Gan
- Division of Gastroenterology and Hepatology, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Jeffrey Barkun
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Natalia Calo
- Division of Gastroenterology and Hepatology, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | - Abrar Nawawi
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Gad Friedman
- Division of Gastroenterology and Hepatology, Jewish General Hospital, Montreal, Quebec, Canada
| | - Albert Cohen
- Division of Gastroenterology and Hepatology, Jewish General Hospital, Montreal, Quebec, Canada
| | - Thibaut Maniere
- Division of Gastroenterology, Hôpital Charles-Le Moyne, Longeuil, Quebec, Canada
| | - Prosanto Chaudhury
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Peter Metrakos
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - George Zogopoulos
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Ali Bessissow
- Department of Radiology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Jad Abou Khalil
- Division of Gastroenterology and Hepatology, Ottawa Hospital, Ottawa, Ontario, Canada
| | - Vicky Baffis
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Kevin Waschke
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Josee Parent
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Constantine Soulellis
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Mouen Khashab
- Division of Gastroenterology and Hepatology, Johns Hopkins Hospital, Baltimore, Maryland
| | - Rastislav Kunda
- Department of Surgery, Department of Gastroenterology-Hepatology, Department of Advanced Interventional Endoscopy, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Olivia Geraci
- Research Institute McGill University Health Centre, Montreal, Quebec, Canada
| | - Myriam Martel
- Research Institute McGill University Health Centre, Montreal, Quebec, Canada
| | - Kevin Schwartzman
- Respiratory Division, McGill University Health Centre, Montreal, Quebec, Canada
| | - Julio F Fiore
- Department of Surgery, McGill University Health Centre, Montreal, Quebec, Canada
| | - Elham Rahme
- Department of Medicine, Division of Clinical Epidemiology, McGill University, Montreal, Quebec, Canada
| | - Alan Barkun
- Division of Gastroenterology and Hepatology, McGill University Health Centre, Montreal, Quebec, Canada
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Rajendran L, Lenet T, Shorr R, Abou Khalil J, Bertens KA, Balaa FK, Martel G. Should Cell Salvage Be Used in Liver Resection and Transplantation? A Systematic Review and Meta-analysis. Ann Surg 2023; 277:456-468. [PMID: 35861339 PMCID: PMC9891298 DOI: 10.1097/sla.0000000000005612] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To evaluate the effect of intraoperative blood cell salvage and autotransfusion (IBSA) use on red blood cell (RBC) transfusion and postoperative outcomes in liver surgery. BACKGROUND Intraoperative RBC transfusions are common in liver surgery and associated with increased morbidity. IBSA can be utilized to minimize allogeneic transfusion. A theoretical risk of cancer dissemination has limited IBSA adoption in oncologic surgery. METHODS Electronic databases were searched from inception until May 2021. All studies comparing IBSA use with control in liver surgery were included. Screening, data extraction, and risk of bias assessment were conducted independently, in duplicate. The primary outcome was intraoperative allogeneic RBC transfusion (proportion of patients and volume of blood transfused). Core secondary outcomes included: overall survival and disease-free survival, transfusion-related complications, length of hospital stay, and hospitalization costs. Data from transplant and resection studies were analyzed separately. Random effects models were used for meta-analysis. RESULTS Twenty-one observational studies were included (16 transplant, 5 resection, n=3433 patients). Seventeen studies incorporated oncologic indications. In transplant, IBSA was associated with decreased allogeneic RBC transfusion [mean difference -1.81, 95% confidence interval (-3.22, -0.40), P =0.01, I 2 =86%, very-low certainty]. Few resection studies reported on transfusion for meta-analysis. No significant difference existed in overall survival or disease-free survival in liver transplant [hazard ratio (HR)=1.12 (0.75, 1.68), P =0.59, I 2 =0%; HR=0.93 (0.57, 1.48), P =0.75, I 2 =0%] and liver resection [HR=0.69 (0.45, 1.05), P =0.08, I 2 =0%; HR=0.93 (0.59, 1.45), P =0.74, I 2 =0%]. CONCLUSION IBSA may reduce intraoperative allogeneic RBC transfusion without compromising oncologic outcomes. The current evidence base is limited in size and quality, and high-quality randomized controlled trials are needed.
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Affiliation(s)
- Luckshi Rajendran
- Division of General Surgery, University of Toronto, Toronto, ON, Canada
| | - Tori Lenet
- Department of Surgery, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Risa Shorr
- Library Services, The Ottawa Hospital, Ottawa, ON, Canada
| | - Jad Abou Khalil
- Department of Surgery, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - Kimberly A. Bertens
- Department of Surgery, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - Fady K. Balaa
- Department of Surgery, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - Guillaume Martel
- Department of Surgery, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
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Lee A, Finstad A, Tipney B, Lamb T, Rahman A, Devenny K, Abou Khalil J, Kuziemsky C, Balaa F. OUP accepted manuscript. BJS Open 2022; 6:6555348. [PMID: 35348608 PMCID: PMC8963294 DOI: 10.1093/bjsopen/zrac011] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/21/2021] [Accepted: 01/03/2022] [Indexed: 12/02/2022] Open
Abstract
Background Human factors (HF) integration can improve patient safety in the operating room (OR), but the depth of current knowledge remains unknown. This study aimed to explore the content of HF training for the operative environment. Methods We searched six bibliographic databases for studies describing HF interventions for the OR. Skills taught were classified using the Chartered Institute of Ergonomics and Human Factors (CIEHF) framework, consisting of 67 knowledge areas belonging to five categories: psychology; people and systems; methods and tools; anatomy and physiology; and work environment. Results Of 1851 results, 28 studies were included, representing 27 unique interventions. HF training was mostly delivered to interdisciplinary groups (n = 19; 70 per cent) of surgeons (n = 16; 59 per cent), nurses (n = 15; 56 per cent), and postgraduate surgical trainees (n = 11; 41 per cent). Interactive methods (multimedia, simulation) were used for teaching in all studies. Of the CIEHF knowledge areas, all 27 interventions taught ‘behaviours and attitudes’ (psychology) and ‘team work’ (people and systems). Other skills included ‘communication’ (n = 25; 93 per cent), ‘situation awareness’ (n = 23; 85 per cent), and ‘leadership’ (n = 20; 74 per cent). Anatomy and physiology were taught by one intervention, while none taught knowledge areas under work environment. Conclusion Expanding HF education requires a broader inclusion of the entirety of sociotechnical factors such as contributions of the work environment, technology, and broader organizational culture on OR safety to a wider range of stakeholders.
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Affiliation(s)
- Alex Lee
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | | | | | - Tyler Lamb
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, ON, Canada
| | - Alvi Rahman
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC, Canada
| | - Kirsten Devenny
- Saegis, Canadian Medical Protective Association, Ottawa, ON, Canada
| | - Jad Abou Khalil
- Division of General Surgery, Department of Surgery, University of Ottawa, Ottawa, ON, Canada
| | - Craig Kuziemsky
- Office of Research Services and School of Business, MacEwan University, AB, Canada
| | - Fady Balaa
- Correspondence to: Fady Balaa, Division of General Surgery, Department of Surgery, University of Ottawa, The Ottawa Hospital – General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada (e-mail: )
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Lee A, Tipney B, Finstad A, Rahman A, Devenny K, Abou Khalil J, Kuziemsky C, Balaa F. Exploring human factors in the operating room: a protocol for a scoping review of training offerings for healthcare professionals. BMJ Open 2021; 11:e044721. [PMID: 34083334 PMCID: PMC8174521 DOI: 10.1136/bmjopen-2020-044721] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
INTRODUCTION Applying human factors principles in surgical care has potential benefits for patient safety and care delivery. Although different theoretical frameworks of human factors exist, how providers are being trained in human factors and how human factors are being understood in vivo in the operating room (OR) remain unknown. The aim of this scoping review is to evaluate the application of human factors for the OR environment as described by education and training offerings for healthcare professionals. METHODS AND ANALYSIS This scoping review will follow the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews guidelines. MEDLINE, Embase, PsycINFO, CINAHL, Health and Psychosocial Instruments and ERIC databases were searched on August 2020 from inception to identify relevant studies that describe the content, application and impact of human factors training for healthcare professionals or trainees who work in or interface with the OR environment. Titles, abstracts and full texts will be independently screened by two authors for eligible studies. Any disagreements will be resolved by discussion or by a third author when disagreement persists. Study information and training characteristics, such as the training tool used and type of learners and teachers, will be charted and summarised, and key themes in human factors training will be identified. Each training offering will be classified under the appropriate knowledge area(s) of human factors described by the Chartered Institute of Ergonomics & Human Factors (CIEHF). Themes that are not captured by the CIEHF framework will be independently recorded by two authors and included based on group discussion and consensus. ETHICS AND DISSEMINATION Research ethics board approval is not required for this scoping review. The findings of this study will be disseminated at local and national conferences and will be published in a peer-reviewed journal.
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Affiliation(s)
- Alex Lee
- University of Ottawa Faculty of Medicine, Ottawa, Ontario, Canada
| | | | | | - Alvi Rahman
- Department of Epidemiology, Biostatistics and Occupational Health, McGill University Faculty of Medicine, Montreal, Quebec, Canada
| | - Kirsten Devenny
- Saegis, Canadian Medical Protective Association, Ottawa, Ontario, Canada
| | - Jad Abou Khalil
- Division of General Surgery, Department of Surgery, University of Ottawa Faculty of Medicine, Ottawa, Ontario, Canada
| | - Craig Kuziemsky
- Office of Research Services and School of Business, MacEwan University School of Business, Edmonton, Alberta, Canada
| | - Fady Balaa
- Division of General Surgery, Department of Surgery, University of Ottawa Faculty of Medicine, Ottawa, Ontario, Canada
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Lemke M, Park L, Balaa FK, Martel G, Khalil JA, Bertens KA. Passive Versus Active Intra-Abdominal Drainage Following Pancreaticoduodenectomy: A Retrospective Study Using The American College of Surgeons NSQIP Database. World J Surg 2020; 45:554-561. [PMID: 33078216 DOI: 10.1007/s00268-020-05823-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Prophylactic drainage following pancreaticoduodenectomy (PD) reduces morbidity and mortality. Little evidence exists to advise on whether passive gravity (PG) or active suction (AS) drainage systems result in superior outcomes. This study examines the relationship between drainage system and morbidity following PD. METHODS All patients undergoing elective PD with an operatively placed drain in the 2016 ACS-NSQIP database were included. Pre- and intra-operative factors were examined. Multivariable logistic regression and coarsened exact matching (CEM) were used to assess for an association between drainage system (PG vs. AS) and morbidity. The primary outcome was postoperative pancreatic fistula (POPF). RESULTS In total, 3430 patients were included: 563 (16.4%) with PG and 2867 (83.6%) with AS drainage system. On multivariable regression, 1787 patients were included. Drainage type was not associated with POPF, surgical site infection, delayed gastric emptying, or re-operation. AS drainage was protective against percutaneous drain insertion (OR 0.65, 95% CI 0.44-0.96, p = 0.033). In the CEM cohort (n = 268), superficial SSI was higher in the AS group (0.8% vs. 6.0%, p = 0.036). There was a trend toward higher rates of composite total SSI (PG 15.7%, AS 23.9%, p = 0.092) and organ space SSI (PG 14.2%, AS 20.2%, p = 0.195) in the AS group; this did not demonstrate statistical significance. CONCLUSIONS The findings of this study suggest that AS drainage is protective against percutaneous drain insertion, but may be associated with increased risk of SSI. There was no relation between drainage type and POPF. A prospective, randomized controlled trial is warranted to further explore these findings.
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Affiliation(s)
- Madeline Lemke
- School of Medicine, Queen's University, Kingston, ON, Canada
| | - Lily Park
- School of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Fady K Balaa
- School of Medicine, University of Ottawa, Ottawa, ON, Canada.,Liver and Pancreas Surgical Unit, Division of General Surgery, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Guillaume Martel
- School of Medicine, University of Ottawa, Ottawa, ON, Canada.,Liver and Pancreas Surgical Unit, Division of General Surgery, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Jad Abou Khalil
- School of Medicine, University of Ottawa, Ottawa, ON, Canada.,Liver and Pancreas Surgical Unit, Division of General Surgery, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada
| | - Kimberly A Bertens
- School of Medicine, University of Ottawa, Ottawa, ON, Canada. .,Liver and Pancreas Surgical Unit, Division of General Surgery, The Ottawa Hospital - General Campus, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.
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Smith H, Balaa FK, Martel G, Abou Khalil J, Bertens KA. Standardization of early drain removal following pancreatic resection: proposal of the "Ottawa pancreatic drain algorithm". Patient Saf Surg 2019; 13:38. [PMID: 31827615 PMCID: PMC6889288 DOI: 10.1186/s13037-019-0219-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 09/17/2019] [Accepted: 11/07/2019] [Indexed: 02/06/2023] Open
Abstract
Background Early drain removal after pancreatic resection is encouraged for individuals with low postoperative day 1 drain amylase levels (POD1 DA) to mitigate associated morbidity. Although various protocols for drain management have been published, there is a need to assess the implementation of a standardized protocol. Methods The Ottawa pancreatic drain algorithm (OPDA), based on POD1 DA and effluent volume, was developed and implemented at our institution. A retrospective cohort analysis was conducted of all patients undergoing pancreatic resection January 1, 2016-October 30, 2017, excluding November and December 2016 (one month before and after OPDA implementation). Results 42 patients pre-implementation and 53 patients post-implementation were included in the analysis. The median day of drain removal was significantly reduced after implementation of the OPDA (8 vs. 5 days; p = 0.01). Early drain removal appeared safe with no difference in reoperation or readmission rate after protocol implementation (p = 0.39; p = 0.76). On subgroup analysis, median length of stay was significantly shorter following OPDA implementation for patients who underwent DP and did not develop a postoperative pancreatic fistula (POPF) (6 vs 10 days, p = 0.03). Although the incidence of both surgical site infection and POPF were reduced following the intervention, neither reached statistical significance (38.1 to 28.3%, p = 0.31; and 38.1 to 28.3%, p = 0.31 respectively). Conclusions Implementing the OPDA was associated with earlier drain removal and decreased length of stay in patients undergoing distal pancreatectomy who did not develop POPF, without increased morbidity. Standardizing drain removal may help facilitate early drain removal after pancreatic resection at other institutions.
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Affiliation(s)
- Heather Smith
- Division of General Surgery, The Ottawa Hospital, University of Ottawa, 725 Parkdale Ave, Ottawa, ON K1Y4E9 Canada
| | - Fady K Balaa
- Hepatopancreaticobiliary Subunit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, General Campus, 501 Smyth Road, CCW 1667b, Ottawa, ON K1H 8L6 Canada
| | - Guillaume Martel
- Hepatopancreaticobiliary Subunit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, General Campus, 501 Smyth Road, CCW 1667b, Ottawa, ON K1H 8L6 Canada.,3Clinical Epidemiology Program, Ottawa Hospital Research Institute, 1053 Carling Ave, Ottawa, ON K1Y4E9 Canada
| | - Jad Abou Khalil
- Hepatopancreaticobiliary Subunit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, General Campus, 501 Smyth Road, CCW 1667b, Ottawa, ON K1H 8L6 Canada
| | - Kimberly A Bertens
- Hepatopancreaticobiliary Subunit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, General Campus, 501 Smyth Road, CCW 1667b, Ottawa, ON K1H 8L6 Canada.,3Clinical Epidemiology Program, Ottawa Hospital Research Institute, 1053 Carling Ave, Ottawa, ON K1Y4E9 Canada
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9
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Grose E, Wilson S, Barkun J, Bertens K, Martel G, Balaa F, Khalil JA. Use of Correct Propensity Score Methodology in Contemporary High-Impact Surgical Literature. J Am Coll Surg 2019. [DOI: 10.1016/j.jamcollsurg.2019.08.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Park L, Baker L, Smith H, Davies A, Abou Khalil J, Martel G, Balaa F, Bertens KA. Passive versus active intra-abdominal drainage following pancreatic resection: does a superior drainage system exist? A protocol for systematic review. BMJ Open 2019; 9:e031319. [PMID: 31530619 PMCID: PMC6756355 DOI: 10.1136/bmjopen-2019-031319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Clinically relevant postoperative pancreatic fistula (CR-POPF) is the most common cause of major morbidity following pancreatic resection. Intra-abdominal drains are frequently positioned adjacent to the pancreatic anastomosis or transection margin at the time of surgery to aid in detection and management of CR-POPF. Drains can either evacuate fluid by passive gravity (PG) or be attached to a closed suction (CS) system using negative pressure. There is controversy as to whether one of these two systems is superior. The objective of this review is to identify and compare the incidence of adverse events (AEs) and resource utilisation associated with PG and CS drainage following pancreatic resections. METHODS AND ANALYSIS MEDLINE, EMBASE, CINAHL and Cochrane Central Registry of Controlled Trials will be searched from inception to April 2019, to identify interventional and observational studies comparing PG and CS drains following pancreatic resection. The primary outcome is POPF as defined by the International Study Group for Pancreatic Fistula in 2017. Secondary outcomes include postoperative AE, resource utilisation (length of stay, return to emergency department, readmission and reintervention), time to drain removal and quality of life. Study selection, data extraction and risk of bias assessment will be performed independently, by two reviewers. A meta-analysis will be conducted if deemed statistically appropriate. Subgroup analysis by study design will be performed. Study heterogeneity will be calculated with the χ2 test and reported as I2 statistics. Statistical analyses will be conducted and displayed using RevMan V.5.3 ETHICS AND DISSEMINATION: Ethics approval is not required. The results of this study will be submitted to relevant conferences for presentation and peer-reviewed journals for publication. PROSPERO REGISTRATION NUMBER CRD42019123647.
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Affiliation(s)
- Lily Park
- School of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Laura Baker
- General Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Heather Smith
- General Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
| | | | - Jad Abou Khalil
- Hepatopancreaticobiliary Surgery, Department of Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
- Clinical Epidemiology, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Guillaume Martel
- Hepatopancreaticobiliary Surgery, Department of Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
- Clinical Epidemiology, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Fady Balaa
- Hepatopancreaticobiliary Surgery, Department of Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Kimberly A Bertens
- Hepatopancreaticobiliary Surgery, Department of Surgery, The Ottawa Hospital, Ottawa, Ontario, Canada
- Clinical Epidemiology, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
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Al-Khamis A, Abou Khalil J, Torabi N, Demian M, Kezouh A, Gordon PH, Boutros M. Operative management of acute diverticulitis in immunosuppressed compared to immunocompetent patients: A systematic review. World J Surg Proced 2015; 5:155-166. [DOI: 10.5412/wjsp.v5.i1.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/04/2014] [Accepted: 02/09/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine short and long-term outcomes following operative management of acute diverticulitis in immunosuppressed (IMS) compared to immunocompetent (IMC) patients.
METHODS: PRISMA guidelines were followed in conducting this systematic review. We searched PubMed (1946 to present), OVID MEDLINE(R) In-Process and Other Non-Indexed Citations, OVID MEDLINE(R) Daily and OVID MEDLINE(R) (1946 to present), EMBASE on OVID platform (1947 to present), CINAHL on EBSCO platform (1981 to present), and Cochrane Library using a systematic search strategy. There were no restrictions on publication date and language. We systematically reviewed all published cohort comparative studies, case-control studies, and randomized controlled trials that reported outcomes on operative management of acute episode of colonic diverticulitis in IMS in comparison to IMC patients.
RESULTS: Seven hundred and fifty-five thousand five hundred and eighty-three patients were included in this systematic review; of which 1478 were IMS and 754105 were IMC patients. Of the nine studies included there was one prospective cohort, seven retrospective cohorts, one retrospective case-control study, and no randomized controlled trials. With the exception of solid organ transplant patients, IMS patients appeared to be older than IMC when they presented with an acute episode of diverticulitis. IMS patients presented with more severe acute diverticulitis and more insidious onset of symptoms than IMC patients. In the emergency setting, peritonitis was the main indication for operative intervention in both IMS and IMC patients. IMS patients were more likely to undergo Hartmann’s procedure and less likely to undergo reconstructive procedures compared to IMC patients. Furthermore, IMS patients had higher morbidity and mortality rates in the emergency setting compared to IMC patients. In the elective settings, it appeared that reconstruction with primary anastomosis with or without a diverting loop stoma is the procedure of choice in the IMS patients and carried minimal morbidity and mortality equivalent to IMC patients.
CONCLUSION: Emergency operations for diverticulitis in IMS compared to IMC patients have higher morbidity and mortality, whereas, in the elective setting both groups have comparable outcomes.
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Hart A, Khalil JA, Carli A, Huk O, Zukor D, Antoniou J. Blood transfusion in primary total hip and knee arthroplasty. Incidence, risk factors, and thirty-day complication rates. J Bone Joint Surg Am 2014; 96:1945-51. [PMID: 25471908 DOI: 10.2106/jbjs.n.00077] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [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: 02/01/2023]
Abstract
BACKGROUND The aim of this study was to analyze NSQIP (National Surgical Quality Improvement Program) data to better understand the incidence, risk factors, and thirty-day complication rates associated with transfusions in primary total hip and knee arthroplasty. METHODS We identified 9362 total hip and 13,662 total knee arthroplasty procedures from the database and separated those in which any red blood-cell transfusion was performed within seventy-two hours after surgery from those with no transfusion. Patient demographics, comorbidities, preoperative laboratory values, intraoperative variables, and postoperative complications were compared between patients who received a transfusion and those who did not. Multivariate logistic regression was used to identify independent risk factors for receiving a transfusion as well as for associated postoperative complications (thirty-day incidences of infection, venous thromboembolism, and mortality). RESULTS The transfusion rate after total hip arthroplasty was 22.2%. Significant risk factors for receiving a transfusion were age (OR [odds ratio] per ten years = 10.1), preoperative anemia (OR = 3.6), female sex (OR = 2.0), BMI (body mass index) of <30 kg/m(2) (OR = 1.4), and ASA (American Society of Anesthesiologists) class of >2 (OR = 1.3). Multivariate logistic regression analysis indicated that adjusted odds of infection, venous thromboembolism, and mortality did not differ significantly between patients who received a transfusion and those who did not. The transfusion rate after total knee arthroplasty was 18.3%. Risk factors for receiving a transfusion were age (OR per ten years = 10.2), preoperative anemia (OR = 3.8), BMI of <30 kg/m(2) (OR = 1.4), female sex (OR = 1.3), and ASA class of >2 (OR = 1.3). Multivariate logistic regression indicated that a transfusion was significantly associated with mortality (OR = 2.7) but not with infection or venous thromboembolism. CONCLUSIONS We did not find a strong association between perioperative red blood-cell transfusion and thirty-day incidences of infection, venous thromboembolism, or mortality; however, the odds of mortality were higher in patients who received a transfusion during total knee arthroplasty. LEVEL OF EVIDENCE Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Adam Hart
- Division of Orthopedic Surgery, McGill University Health Centre, SMBD-Jewish General Hospital, Room E-003, 3755 Côte Ste-Catherine Road, Montréal, QC H3T 1E2, Canada
| | - Jad Abou Khalil
- Division of General Surgery, McGill University Health Centre, Royal Victoria Hospital, Room S10.26, 687 Pine Avenue West, Montréal, QC H3A 1A1, Canada
| | - Alberto Carli
- Division of Orthopedic Surgery, McGill University Health Centre, SMBD-Jewish General Hospital, Room E-003, 3755 Côte Ste-Catherine Road, Montréal, QC H3T 1E2, Canada
| | - Olga Huk
- Division of Orthopedic Surgery, McGill University Health Centre, SMBD-Jewish General Hospital, Room E-003, 3755 Côte Ste-Catherine Road, Montréal, QC H3T 1E2, Canada
| | - David Zukor
- Division of Orthopedic Surgery, McGill University Health Centre, SMBD-Jewish General Hospital, Room E-003, 3755 Côte Ste-Catherine Road, Montréal, QC H3T 1E2, Canada
| | - John Antoniou
- Division of Orthopedic Surgery, McGill University Health Centre, SMBD-Jewish General Hospital, Room E-003, 3755 Côte Ste-Catherine Road, Montréal, QC H3T 1E2, Canada
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13
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Khalil JA, Mayo N, Dumitra S, Jamal M, Chaudhury P, Metrakos P, Barkun J. Pancreatic fistulae after a pancreatico-duodenectomy: are pancreatico-gastrostomies safer than pancreatico-jejunostomies? An expertise-based trial and propensity-score adjusted analysis. HPB (Oxford) 2014; 16:1062-7. [PMID: 24946170 PMCID: PMC4253328 DOI: 10.1111/hpb.12294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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] [Received: 03/04/2014] [Accepted: 05/10/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND A pancreatic fistula (PF) is a major contributor to morbidity and mortality after a pancreaticoduodenectomy (PD). There remains debate as to whether re-establishing pancreaticoenteric continuity by a pancreatico-gastrostomy (PG) can decrease the risk of a PF and complications compared with a pancreatico-jejunostomy (PJ). The outcomes of patients undergoing these reconstructions after a PD were compared. METHOD Patients undergoing a PD between 1999 and 2011 were selected from a prospective database and having undergone either a PG or PJ reconstruction. A propensity-score adjusted multivariate logistic regression was performed to identify the effect of surgical technique on outcomes of PF, delayed gastric emptying (DGE) and total complications. RESULTS Twenty-three out of 103 and 20 out of 103 (P = 0.49) patients had PF and 74 out of 103 and 55 out of 103 patients had all-grades DGE in the PG and PJ groups, respectively (P = 0.02). The groups did not differ with regards to Clavien-Dindo grade of complications (P = 0.29) but did differ with regards to the Comprehensive Complication Index (CCI) (38.4 versus 31.4 for PG versus PG, respectively, P = 0.02.) Propensity-score adjusted multivariate analysis showed no effect of PG on PF (P = 0.89), DGE grades B/C (P = 0.9) or CCI (P = 0.41). There remained an effect on all-grades of DGE (P = 0.012.) DISCUSSION Patients undergoing PG reconstruction had a similar rate of PF as those undergoing a PJ after a PD.
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Affiliation(s)
- Jad Abou Khalil
- Department of General Surgery, McGill UniversityMontreal, QC, Canada,Correspondence Jad Abou Khalil, 687 Pine Avenue West, Montreal, QC H3A1A1, Canada. Tel: +1 (514) 294-6867. Fax: +1 (514) 288-8196. E-mail:
| | - Nancy Mayo
- Division of Clinical Epidemiology, McGill UniversityMontreal, QC, Canada
| | - Sinziana Dumitra
- Department of General Surgery, McGill UniversityMontreal, QC, Canada
| | - Mohammed Jamal
- Department of Surgery, Kuwait UniversityKuwait City, Kuwait
| | | | - Peter Metrakos
- Department of General Surgery, McGill UniversityMontreal, QC, Canada
| | - Jeffrey Barkun
- Department of General Surgery, McGill UniversityMontreal, QC, Canada
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14
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Khalil JA, Dumitra SA, Barkun JS, Chaudhury PK. Outcomes of pylorus-preserving versus conventional Whipples' pancreatico-duodenectomy: insights from the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP). J Am Coll Surg 2014. [DOI: 10.1016/j.jamcollsurg.2014.07.440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
BACKGROUND This study attempts to define clinical predictors of survival in patients with unresectable pancreatic adenocarcinoma (UPA). METHODS A retrospective study of 94 consecutive patients diagnosed with UPA from 2001 to 2006 was performed. Using data for these patients, a symptom score was devised through a forward stepwise Cox proportional hazards model based on four weighted criteria: weight loss of >10% of body weight; pain; jaundice, and smoking. The symptom score was subsequently validated in a distinct cohort of 32 patients diagnosed with UPA in 2007. RESULTS In the original cohort, the overall median survival was 9.0 months (95% confidence interval [CI] 7.6-10.4). This altered to 10.3 months (95% CI 6.1-14.5) in patients with locally advanced disease, and 6.6 months (95% CI 4.2-9.0) in patients with distant metastasis. Median survival was 14.6 months (95% CI 13.1-16.1) in patients with a low symptom (LS) score and 6.3 months (95% CI 4.1-8.5) in patients with a high symptom (HS) score. A total of 73% of LS score patients survived beyond 9 months, compared with only 38% of HS score patients (P<0.001). The discrimination of the LS score was greater than that of any conventional method, including imaging. The validation cohort confirmed the discriminative ability of the symptom score for survival. CONCLUSIONS A simple and clinically meaningful point-based symptom score can successfully predict survival in patients with UPA.
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Affiliation(s)
- Mohammad H Jamal
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Suhail A Doi
- School of Population Health, University of QueenslandBrisbane, QLD, Australia
| | - Eve Simoneau
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Jad Abou Khalil
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Mazen Hassanain
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Prosanto Chaudhury
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Jean Tchervenkov
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Peter Metrakos
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
| | - Jeffrey S Barkun
- Department of Surgery, McGill University Health CenterMontreal, QC, Canada
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16
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Guo Y, Tiedemann K, Khalil JA, Russo C, Siegel PM, Komarova SV. Osteoclast precursors acquire sensitivity to breast cancer derived factors early in differentiation. Bone 2008; 43:386-393. [PMID: 18502714 DOI: 10.1016/j.bone.2008.03.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [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] [Received: 01/04/2008] [Revised: 03/19/2008] [Accepted: 03/19/2008] [Indexed: 01/26/2023]
Abstract
The development of osteolytic breast cancer bone metastases relies on the ability of tumor cells to stimulate the formation of bone-resorbing osteoclasts. We have studied the effects of soluble factors produced by MDA-MB-231 breast carcinoma cells on osteoclast formation from human monocytic precursors and RAW 264.7 monocytic cells. Although factors produced by breast cancer cells were ineffective in inducing osteoclast formation from monocytes, priming with RANKL for 1-3 days dramatically increased receptiveness of osteoclast precursors to cancer-derived factors, which enhanced osteoclast formation 2-3 fold in the absence of supporting cell types. Osteoclasts formed by exposure to cancer factors expressed proteases critical for bone resorption, cathepsin K and matrix metalloproteinase 9, and were capable of resorbing calcified matrices. Expression of key osteoclastogenic transcription factor NFATc1 in osteoclast precursors was dramatically increased by short treatment with RANKL. NFATc1 was localized in the nuclei of primed osteoclast precursors when RANKL was present; however removal of RANKL led to rapid nuclear export of NFATc1. Cancer-derived factors were able to substitute for RANKL in supporting nuclear localization of NFATc1. Using neutralizing antibodies against TGFbeta, and a kinase inhibitor targeting the TGFbeta type I receptor, we identified TGFbeta as a permissive factor, required for the effects of breast cancer cells on NFATc1 nuclear accumulation and osteoclast formation. Our data suggest that, during differentiation, osteoclast precursors acquire the competency to respond to factors secreted by breast cancer cells, which may serve to promote tumor growth at skeletal sites undergoing active bone turnover.
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Affiliation(s)
- Yubin Guo
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada
| | | | - Jad Abou Khalil
- Departments of Medicine, McGill University, Montreal, Quebec, Canada
| | - Caterina Russo
- Departments of Medicine, McGill University, Montreal, Quebec, Canada
| | - Peter M Siegel
- Departments of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada; Departments of Biochemistry, McGill University, Montreal, Quebec, Canada; Departments of Medicine, McGill University, Montreal, Quebec, Canada
| | - Svetlana V Komarova
- Faculty of Dentistry, McGill University, Montreal, Quebec, Canada; Departments of Anatomy and Cell Biology, McGill University, Montreal, Quebec, Canada; Departments of Medicine, McGill University, Montreal, Quebec, Canada.
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Kempf I, Khalil JA, Kempf JF, Karger C. [Rotational 90 degrees Posterior osteotomy in the treatment of necrosis of the femur head]. Acta Orthop Belg 1981; 47:290-300. [PMID: 7282343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Khalil JA, Thommen DH. [Contraception: the point]. Ther Umsch 1976; 33:204-9. [PMID: 1006573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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