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Khan R, Homsi H, Gimpaya N, Lisondra J, Sabrie N, Gholami R, Bansal R, Scaffidi MA, Lightfoot D, James PD, Siau K, Forbes N, Wani S, Keswani RN, Walsh CM, Grover SC. Validity evidence for observational ERCP competency assessment tools: a systematic review. Endoscopy 2023; 55:847-856. [PMID: 36822219 DOI: 10.1055/a-2041-7546] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
BACKGROUND : Assessment of competence in endoscopic retrograde cholangiopancreatography (ERCP) is critical for supporting learning and documenting attainment of skill. Validity evidence supporting ERCP observational assessment tools has not been systematically evaluated. METHODS : We conducted a systematic search using electronic databases and hand-searching from inception until August 2021 for studies evaluating observational assessment tools of ERCP performance. We used a unified validity framework to characterize validity evidence from five sources: content, response process, internal structure, relations to other variables, and consequences. Each domain was assigned a score of 0-3 (maximum score 15). We assessed educational utility and methodological quality using the Accreditation Council for Graduate Medical Education framework and the Medical Education Research Quality Instrument, respectively. RESULTS : From 2769 records, we included 17 studies evaluating 7 assessment tools. Five tools were studied for clinical ERCP, one for simulated ERCP, and one for simulated and clinical ERCP. Validity evidence scores ranged from 2 to 12. The Bethesda ERCP Skills Assessment Tool (BESAT), ERCP Direct Observation of Procedural Skills Tool (ERCP DOPS), and The Endoscopic Ultrasound (EUS) and ERCP Skills Assessment Tool (TEESAT) had the strongest validity evidence, with scores of 10, 12, and 11, respectively. Regarding educational utility, most tools were easy to use and interpret, and required minimal additional resources. Overall methodological quality (maximum score 13.5) was strong, with scores ranging from 10 to 12.5. CONCLUSIONS : The BESAT, ERCP DOPS, and TEESAT had strong validity evidence compared with other assessments. Integrating tools into training may help drive learners' development and support competency decision making.
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Affiliation(s)
- Rishad Khan
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, Canada
| | - Hoomam Homsi
- Schulich School of Medicine and Dentistry, Western University, London, Canada
| | - Nikko Gimpaya
- Division of Gastroenterology, St. Michael's Hospital, Toronto, Canada
| | - James Lisondra
- Division of Gastroenterology, St. Michael's Hospital, Toronto, Canada
| | | | - Reza Gholami
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, Canada
- Division of Gastroenterology, St. Michael's Hospital, Toronto, Canada
| | - Rishi Bansal
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Canada
| | | | - David Lightfoot
- Health Science Library, Unity Health Toronto, St. Michael's Hospital, Toronto, Canada
| | - Paul D James
- Division of Gastroenterology, University Health Network, Toronto, Canada
| | - Keith Siau
- Joint Advisory Group on Gastrointestinal Endoscopy, Royal College of Physicians, London, United Kingdom
- Immunology and Immunotherapy, University of Birmingham College of Medical and Dental Sciences, Birmingham, United Kingdom
| | - Nauzer Forbes
- Department of Medicine, Division of Gastroenterology and Hepatology, University of Calgary, Calgary, Alberta, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Sachin Wani
- Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Rajesh N Keswani
- Division of Gastroenterology, Department of Medicine, Northwestern University, Chicago, Illinois, United States
| | - Catharine M Walsh
- The Wilson Centre, University of Toronto, Toronto, Canada
- SickKids Research and Learning Institute, The Hospital for Sick Children, Toronto, Canada
- Division of Gastroenterology, Hepatology, and Nutrition, The Hospital for Sick Children, Toronto, Canada
- Department of Paediatrics, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Samir C Grover
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, Canada
- Division of Gastroenterology, St. Michael's Hospital, Toronto, Canada
- Department of Medicine, University of Toronto, Toronto, Canada
- Li Ka Shing Knowledge Institute, Toronto, Canada
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2
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Khan R, Salim M, Tanuseputro P, Hsu AT, Coburn N, Hallet J, Talarico R, James PD. Initial treatment is associated with improved survival and end-of-life outcomes for patients with pancreatic cancer: a cohort study. BMC Cancer 2022; 22:1312. [DOI: 10.1186/s12885-022-10342-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 11/21/2022] [Indexed: 12/15/2022] Open
Abstract
Abstract
Background
We describe the association between initial treatment and end-of-life (EOL) outcomes among patients with pancreatic ductal adenocarcinoma (PDAC).
Methods
This population-based cohort study included patients with PDAC who died from April 2010–December 2017 in Ontario, Canada using administrative databases. We used multivariable models to explore the association between index cancer treatment (no cancer-directed therapy, radiation, chemotherapy, surgery alone, and surgery and chemotherapy), and primary (mortality, healthcare encounters and palliative care) and secondary outcomes (location of death, hospitalizations, and receipt of chemotherapy within the last 30 days of life).
Results
In our cohort (N = 9950), 56% received no cancer-directed therapy, 5% underwent radiation, 27% underwent chemotherapy, 7% underwent surgery alone, and 6% underwent surgery and chemotherapy. Compared to no cancer-directed therapy, radiation therapy (HR = 0.63), chemotherapy (HR = 0.43) surgery alone (HR = 0.32), and surgery and chemotherapy (HR = 0.23) were all associated with decreased mortality. Radiation (AMD = − 3.64), chemotherapy (AMD = -6.35), surgery alone (AMD = -6.91), and surgery and chemotherapy (AMD = -6.74) were all associated with fewer healthcare encounters per 30 days in the last 6 months of life. Chemotherapy (AMD = -1.57), surgery alone (AMD = -1.65), and surgery and chemotherapy (AMD = -1.67) were associated with fewer palliative care visits (all p-values for estimates above < 0.05). Treatment groups were associated with lower odds of institutional death and hospitalization at EOL, and higher odds of chemotherapy at EOL.
Conclusions
Receiving cancer-directed therapies was associated with higher survival, fewer healthcare visits, lower odds of dying in an institution and hospitalization at EOL, fewer palliative care visits, and higher odds of receiving chemotherapy at EOL.
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3
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Khan U, Khan R, Benchimol E, Salim M, Telford J, Enns R, Mohamed R, Forbes N, Sandha G, Kohansal A, Mosko J, Chatterjee A, May G, Waschke K, Barkun A, James PD. Learning curves in ERCP during advanced endoscopy training: a Canadian multicenter prospective study. Endosc Int Open 2022; 10:E1174-E1180. [PMID: 36118648 PMCID: PMC9473840 DOI: 10.1055/a-1795-9037] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/13/2021] [Indexed: 10/31/2022] Open
Abstract
Background and study aims Growing emphasis on quality and patient safety has supported the shift toward competency-based medical education for advanced endoscopy trainees (AETs). In this study, we aimed to examine Canadian AETs learning curves and achievement of competence using an ERCP assessment tool with strong evidence of validity. Methods This prospective study was conducted at five institutions across Canada from 2017-2018. Data on every fifth procedure performed by trainees were collected using the United Kingdom Joint Advisory Joint Advisory Group of Gastrointestinal Endoscopy (JAG) ERCP Direct Observation of Procedural Skills (DOPS) tool, which includes a four-point rating scale for 27 items. Cumulative sum (CUSUM) analysis was used to create learning curves for overall supervision ratings and ERCP DOPS items by plotting scores for procedures performed during training. Results Eleven trainees who were evaluated for 261 procedures comprised our sample. The median number of evaluations by site was 49 (Interquartile range (IQR) 31-76) and by trainee was 15 (IQR 11-45). The overall cannulation rate by trainees was 82 % (241/261), and the native papilla cannulation rate was 78 % (149/191). All trainees achieved competence in the "overall supervision" domain of the ERCP DOPS by the end of their fellowship. Trainees achieved competency in all individual domains, except for tissue sampling and sphincteroplasty. Conclusions Canadian AETs are graduating from fellowship programs with acceptable levels of competence for overall ERCP performance and for the most specific tasks. Learning curves may help identify areas of deficiency that may require supplementary training, such as tissue sampling.
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Affiliation(s)
- Usman Khan
- Division of General Surgery, Department of Surgery, University of Toronto
| | - Rishad Khan
- Department of Medicine, University of Toronto
| | - Eric Benchimol
- Division of Gastroenterology, Hepatology, and Nutrition, the Hospital for Sick Children, University of Toronto
| | - Misbah Salim
- Division of Gastroenterology, University Health Network, University of Toronto
| | - Jennifer Telford
- Division of Gastroenterology and Hepatology, Department of Medicine, University of British Columbia
| | - Robert Enns
- Division of Gastroenterology and Hepatology, Department of Medicine, University of British Columbia
| | - Rachid Mohamed
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Calgary
| | - Nauzer Forbes
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Calgary
| | - Gurpal Sandha
- Division of Gastroenterology and Hepatology, University of Alberta Hospital, University of Alberta
| | - Ali Kohansal
- Division of Digestive Care and Endoscopy, Department of Medicine, Dalhousie University
| | - Jeffrey Mosko
- Division of Gastroenterology, St. Michael’s Hospital, University of Toronto
| | - Avijit Chatterjee
- Division of Gastroenterology and Hepatology, The Ottawa Hospital, University of Ottawa
| | - Gary May
- Division of Gastroenterology, St. Michael’s Hospital, University of Toronto
| | - Kevin Waschke
- Division of Gastroenterology, McGill University Health Centre, McGill University
| | - Alan Barkun
- Division of Gastroenterology, McGill University Health Centre, McGill University
| | - Paul D. James
- Division of Gastroenterology, University Health Network, University of Toronto
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Yang J, Barabash T, Rajendran L, Mahar AL, Hsu AT, James PD, Gotlib Conn L, Wright FC, Ludwig C, Kosyachkova E, Deleemans J, Coburn NG, Hallet J. Patient-centered outcomes for gastrointestinal cancer care: a scoping review protocol. BMJ Open 2022; 12:e061309. [PMID: 35701055 PMCID: PMC9198790 DOI: 10.1136/bmjopen-2022-061309] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION Following a cancer diagnosis, patients and their caregivers face crucial decisions regarding goals of care and treatment, which have consequences that can persist throughout their cancer journey. To foster informed and value-driven treatment choices, evidence-based information on outcomes relevant to patients is needed. Traditionally, clinical studies have largely focused on a few concrete and easily measurable outcomes such as survival, disease progression and immediate treatment toxicities. These outcomes do not capture other important factors that patients consider when making treatment decisions. Patient-centred outcomes (PCOs) reflect the patients' individual values, preferences, needs and circumstances that are essential to directing meaningful and informed healthcare discussions. Often, however, these outcomes are not included in research protocols in a standardised and practical fashion. This scoping review will summarise the existing literature on PCOs in gastrointestinal (GI) cancer care as well as the tools used to assess these outcomes. A comprehensive list of these PCOs will be generated for future efforts to develop a core outcome set. METHODS AND ANALYSIS This scoping review will follow Arksey and O'Malley's expanded framework for scoping reviews. We will systematically search Medline, Embase, CINAHL, Cochrane Library and APA PsycINFO databases for studies examining PCOs in the context of GI cancer. We will include studies published in or after the year 2000 up to the date of the final searches, with no language restrictions. Studies involving adult patients with GI cancers and discussion of any PCOs will be included. Opinion pieces, protocols, case reports and abstracts will be excluded. Two authors will independently perform two rounds of screening to select studies for inclusion. The data from full texts will be extracted, charted and summarised both quantitatively and qualitatively. ETHICS AND DISSEMINATION No ethics approval is required for this scoping review. Results will be disseminated through scientific publication and presentation at relevant conferences.
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Affiliation(s)
- Joanna Yang
- Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Tori Barabash
- Cancer Program, Sunnybrook Research Institute, Evaluative Clinical Sciences Platform, Toronto, Ontario, Canada
| | - Luckshi Rajendran
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Alyson L Mahar
- Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Amy T Hsu
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Bruyere Research Institute, Ottawa, Ontario, Canada
| | - Paul D James
- Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | - Lesley Gotlib Conn
- Tory Trauma Research Program, Sunnybrook Research Institute Evaluative Clinical Sciences Platform, Toronto, Ontario, Canada
- Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
| | - Frances C Wright
- Cancer Program, Sunnybrook Research Institute, Evaluative Clinical Sciences Platform, Toronto, Ontario, Canada
- Division of Surgical Oncology, Odette Cancer Centre, Toronto, Ontario, Canada
| | - Claire Ludwig
- School of Nursing, University of Ottawa, Ottawa, Ontario, Canada
| | | | - Julie Deleemans
- Division of Psychosocial Oncology, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Natalie G Coburn
- Cancer Program, Sunnybrook Research Institute, Evaluative Clinical Sciences Platform, Toronto, Ontario, Canada
- Division of Surgical Oncology, Odette Cancer Centre, Toronto, Ontario, Canada
| | - Julie Hallet
- Cancer Program, Sunnybrook Research Institute, Evaluative Clinical Sciences Platform, Toronto, Ontario, Canada
- Division of Surgical Oncology, Odette Cancer Centre, Toronto, Ontario, Canada
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5
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Barkun AN, Martel M, Epstein IL, Hallé P, Hilsden RJ, James PD, Rostom A, Sey M, Singh H, Sultanian R, Telford JJ, von Renteln D. The Bowel CLEANsing National Initiative: High-Volume Split-Dose Vs Low-Volume Split-Dose Polyethylene Glycol Preparations: A Randomized Controlled Trial. Clin Gastroenterol Hepatol 2022; 20:e1469-e1477. [PMID: 34509641 DOI: 10.1016/j.cgh.2021.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 03/04/2021] [Revised: 08/31/2021] [Accepted: 09/01/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND & AIMS The aim of this study was to compare high-volume polyethylene glycol (PEG) with low-volume PEG with bisacodyl split-dosing regimens. METHODS Adult outpatients in 10 Canadian tertiary hospitals were randomized, stratified by morning or afternoon colonoscopy, to high-volume split-dose PEG (2 L + 2 L) (High-SD) or low volume (1 L + 1 L) + bisacodyl (15 mg) PEG (Low-SD), with a second randomization to liquid or low-residue diets. The primary end point, using noninferiority hypothesis testing, was adequate bowel cleansing (Boston Bowel Preparation Scale total score of ≥6, with each of 3 colonic segments subscores ≥2). Secondary objectives were willingness to repeat the preparation, withdrawal time, cecal intubation, and polyp detection rates. RESULTS Over 29 months, 2314 subjects were randomized to High-SD (N = 1157) or Low-SD (N = 1157) (mean age, 56.2 ± 13.4 y; 52.1% women). Colonoscopy indications were 38.2% diagnostic, 36.8% screening, and 25.0% surveillance, with no between-group imbalances in patient characteristics. Low-SD satisfied noninferiority criteria vs High-SD for adequate bowel cleanliness with only marginally inferior results (90.1% vs 88.1%; P = .02; difference, 2.0%; 95% CI [0.0%; 4.5%]). High-SD was associated with lower willingness to repeat (66.9% vs 91.9%; P < .01), was less well tolerated (7.3 ± 2.3 vs 8.1 ± 1.9; P < .01), causing more symptoms. No differences in procedural outcomes were noted except for more frequent cecal intubation rates after High-SD (97.4% vs 95.6%; P = .02). Among the High-SD group, adequate bowel preparation was greater after a clear liquid diet (93.6% vs 87.9%; P < .01), a finding not seen in the Low-SD group. CONCLUSIONS Low-SD is noninferior to High-SD in providing adequate bowel preparation. Low-SD results in fewer symptoms, with greater willingness to repeat and tolerability. The overall impact of diet was modest.The study was approved by the research ethic boards from all sites and was registered at ClinicalTrials.gov (NCT02547571).
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Affiliation(s)
- Alan N Barkun
- Division of Gastroenterology, Department of Medicine, McGill University Health Center, McGill University, Montreal, Quebec, Canada.
| | - Myriam Martel
- Division of Gastroenterology, Department of Medicine, McGill University Health Center, McGill University, Montreal, Quebec, Canada
| | - Ian L Epstein
- Division of Digestive Care & Endoscopy, Department of Medicine, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Pierre Hallé
- Division of Gastroenterology, Department of Medicine, University Hospital of Quebec-Université Laval, Québec, Canada
| | - Robert J Hilsden
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Paul D James
- Division of Gastroenterology, Department of Medicine, University Health Network, Toronto, Ontario, Canada
| | - Alaa Rostom
- Division of Gastroenterology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Michael Sey
- Division of Gastroenterology, Department of Medicine, Western University, London, Ontario, Canada
| | - Harminder Singh
- Research Institute in Oncology and Hematology, CancerCare Manitoba and Department of Internal Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Richard Sultanian
- Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Jennifer J Telford
- Division of Gastroenterology, Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Daniel von Renteln
- Division of Gastroenterology, Department of Medicine, Université de Montréal, Montreal, Quebec, Canada
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6
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Xiao Y, Salim M, Meng Z, Khan U, Kohansal AR, Forbes N, Heitman S, James PD. A205 IS REPEAT ERCP REQUIRED AFTER INITIAL ENDOSCOPIC MANAGEMENT OF POST-SURGICAL BILE LEAKS? MULTI-CENTER VALIDATION OF THE CALGARY BILE LEAK RULE. J Can Assoc Gastroenterol 2022. [PMCID: PMC8859123 DOI: 10.1093/jcag/gwab049.204] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background The Calgary Bile Leak Rule was developed to identify patients in whom biliary stent removal via gastroscopy could be safely performed in lieu of ERCP for post-surgical bile leaks. Aims This study aimed to evaluate a Modified Calgary Bile Leak Rule (MCBLR) for a cohort of patients who underwent laparoscopic cholecystectomy complicated by bile leak. Methods This retrospective cohort study included patients who underwent ERCP for management of laparoscopic cholecystectomy-induced bile leaks between 2005 and 2017. The primary outcome was defined as the absence of persisting bile leak or other pathology on follow-up ERCP. The MCBLR includes a) normal post-surgical serum alkaline phosphatase, b) small or absent leak with no other biliary pathology on initial ERCP, and c) time between initial and follow-up ERCP was 4–8 weeks. Test performance of the prediction rule was analyzed by calculating sensitivity, specificity, positive predictive value and negative predictive value. Results 124 cases met inclusion criteria, of which 116 (94%) of bile leak cases had no leak identified during the follow-up ERCP. 8 (6.4%) had a persisting bile leak on follow-up ERCP. Bivariate analysis found no factors significantly associated with the primary outcome. The MCBLR demonstrated a sensitivity of 100% (95% CI 63% - 100%), a specificity of 35% (95% CI 26% - 44%), a positive predictive value of 10% (95% CI 4% - 18%), and a negative predictive value of 100.0% (91% to 100%). Conclusions The MCBLR demonstrated high sensitivity and negative predictive value for determining the need for repeat ERCP following endoscopic management of laparoscopic cholecystectomy-induced bile leaks. Funding Agencies None
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Affiliation(s)
- Y Xiao
- University of Toronto, Toronto, ON, Canada
| | - M Salim
- University Health Network, Toronto, ON, Canada
| | - Z Meng
- University of Alberta, Edmonton, AB, Canada
| | - U Khan
- University of Toronto, Toronto, ON, Canada
| | - A R Kohansal
- Gastroenterology, University of Alberta, Edmonton, AB, Canada
| | - N Forbes
- University of Calgary, Calgary, AB, Canada
| | - S Heitman
- University of Calgary, Calgary, AB, Canada
| | - P D James
- University of Toronto, Toronto, ON, Canada
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7
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Nur AM, Salim M, Boerner S, Li S, Law CCY, Edwards L, Ryan K, James PD. OUP accepted manuscript. J Can Assoc Gastroenterol 2022; 5:234-239. [PMID: 36196274 PMCID: PMC9527657 DOI: 10.1093/jcag/gwac011] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Abdulsemed M Nur
- Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
| | - Misbah Salim
- Department of Laboratory Medicine and Pathobiology, University Health Network, University of Toronto, Toronto, Canada
| | - Scott Boerner
- Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
| | - Suqing Li
- Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
| | - Cindy C Y Law
- Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
| | - Leanne Edwards
- Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
| | - Kaitlin Ryan
- Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
| | - Paul D James
- Correspondence: Paul James, MD, MSc, Toronto General Hospital, 200 Elizabeth Street, 9N-981, Toronto, ON M5G 2C4, Canada, e-mail:
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8
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Razik R, James PD, Khan R, Maxwell C, Ruan Y, Forbes N, Williams A, Tanyingoh D, Brenner DR, Kaplan GG, Hilsden RJ, Heitman SJ. Risk of adverse events associated with upper and lower endoscopic ultrasound: a population-based cohort study. Endosc Int Open 2021; 9:E1427-E1434. [PMID: 34466369 PMCID: PMC8382505 DOI: 10.1055/a-1512-9341] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 05/05/2021] [Indexed: 12/16/2022] Open
Abstract
Background and study aim Endoscopic ultrasound (EUS) enables diagnostic evaluation and therapeutic interventions but is associated with adverse events. We conducted a population-based cohort study to determine the risk of adverse events for upper and lower EUS with and without fine-needle aspiration (FNA). Patients and methods All adults who underwent EUS and resided in Calgary in 2007-2013 were included. Endoscopy and provincial databases were used to identify EUS procedures, unplanned emergency department visits, and hospital admissions within 30 days of the procedures, which were then characterized through formal chart review. Adverse events were defined a priori and classified as definitely, possibly, or not related to EUS. The primary outcome was 30-day risk of adverse events classified as definitely or possibly related to EUS. Univariable and multivariable analyses were conducted with risk factors known to be associated with EUS adverse events. Results 2895 patients underwent 3552 EUS procedures: 3034 (85 %) upper EUS, of which 710 (23 %) included FNA, and 518 (15 %) lower EUS, of which 23 (4 %) involved FNA. Overall, 69 procedures (2 %) involved an adverse event that was either definitely or possibly related to EUS, with 33 (1 %) requiring hospitalization. None of the adverse events required intensive care or resulted in death. On multivariable analysis, only FNA was associated with increased risk of adverse events (odds ratio 6.43, 95 % confidence interval 3.92-10.55; P < 0.001). Conclusion Upper and lower EUS were generally safe but FNA substantially increased the risk of adverse events. EUS-related complications requiring hospitalization were rare.
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Affiliation(s)
- Roshan Razik
- Cleveland Clinic Akron General, Akron, Ohio, United States
| | - Paul D. James
- Department of Medicine, University Health Network, University of Toronto, Faculty of Medicine, Toronto, Ontario, Canada
| | - Rishad Khan
- Department of Medicine, University Health Network, University of Toronto, Faculty of Medicine, Toronto, Ontario, Canada
| | - Courtney Maxwell
- Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Yibing Ruan
- Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada
| | - Nauzer Forbes
- Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada,Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Anita Williams
- Analytics, Data Integration, Measurement and Reporting, Alberta Health Services, Calgary, Alberta, Canada
| | - Divine Tanyingoh
- Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Darren R. Brenner
- Department of Cancer Epidemiology and Prevention Research, Cancer Care Alberta, Alberta Health Services, Calgary, Alberta, Canada,Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Gilaad G. Kaplan
- Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada,Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Robert J. Hilsden
- Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada,Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
| | - Steven J. Heitman
- Department of Medicine, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada,Department of Community Health Sciences, University of Calgary, Cumming School of Medicine, Calgary, Alberta, Canada
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9
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Leung KK, James PD, Jaberi A, Hirschfield GM. Esophageal Stenting as Bridge Therapy to Direct Intrahepatic Portocaval Shunt for Refractory Variceal Bleeding. Hepatology 2021; 73:1618-1620. [PMID: 32780882 DOI: 10.1002/hep.31519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 05/10/2020] [Revised: 06/27/2020] [Accepted: 07/19/2020] [Indexed: 01/20/2023]
Affiliation(s)
- Kristel K Leung
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Paul D James
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Arash Jaberi
- Department of Medical Imaging, University of Toronto, Toronto, ON, Canada
| | - Gideon M Hirschfield
- Toronto Centre for Liver Disease, University Health Network, University of Toronto, Toronto, ON, Canada
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10
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Law C, Fischer S, Knox J, Gallinger S, Ramotar S, Anna D, May G, James PD. A48 USE OF ENDOSCOPIC ULTRASOUND FINE NEEDLE ASPIRATE AND ENDOSCOPIC ULTRASOUND FINE NEEDLE BIOPSY FOR DETECTION OF GATA6 EXPRESSON IN PANCREATIC DUCTAL ADENOCARINCOMA. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.046] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
GATA6 is a transcription factor that can be used to distinguish between the basal-like and classical subtypes of pancreatic ductal adenocarcinoma (PDAC). The basal-like subtype has been demonstrated to be less responsive to modified FOLFIRINOX chemotherapy and thus can be used to predict response to specific chemotherapies. To date, GATA6 expression has only been evaluated in surgically resected PDAC specimens. Less than 15% of patients with PDAC are eligible for surgery. Endoscopic ultrasound guided fine-needle aspirate (EUS-FNA) and biopsy (EUS-FNB) can potentially help assess GATA6 expression in PDAC and in turn, help guide personalized treatment selection in all cases of PDAC.
Aims
The primary objective of this study was to explore the yield of EUS-FNA and EUS-FNB for the detection of GATA6 among patients with PDAC. The study also aimed to explore the impact of lesion location on sample adequacy and type of fixative on validity of GATA6 staining.
Methods
This study was conducted from November 2017 to October 2019. Consecutive patients with a diagnosis of PDAC confirmed by biopsy were included. Patients underwent either EUS-FNB or EUS-FNA to obtain tissues samples. Samples were fixed in either neutral buffered formalin (NBF) or a methanol based buffered solution (Cytolyt) and evaluated by a specialized cytopathology team. Fisher’s exact test was used and a p-value ≤0.05 was considered to indicate statistical significance.
Results
Forty-four patients were included in the study. Twenty-three (52%) patients were male and the median age of patients was 67.5 years. Twenty-five lesions were located in the head and neck of the pancreas, 14 were located in the body, and 4 were located in the tail. One patient was found to have a local recurrence of PDAC at the surgical bed of a previous Whipple procedure.
Eighteen lesions were sampled by EUS-FNA and 26 were sampled using EUS-FNB. Thirty-eight (86%) samples were adequate for assessment of GATA6. Sampling technique (p=0.68) and fixative type (p=1.00) did not appear to affect sample adequacy. Compared to pancreatic body or tail specimens, samples obtained from the head or neck of the pancreas were more likely to be inadequate for analysis (p=0.03).
Conclusions
EUS-FNA and EUS-FNB samples are efficacious methods of assessing GATA6 expression in PDAC. This is the first predictor of treatment response that has been demonstrated to be obtained without surgical resection. Neither EUS needle type or alcohol fixation before cell block preparation appear to impact GATA6 detection. Lesions in the pancreatic head or neck appear to be associated with higher rates of sample inadequacy. Larger, prospective studies are required to confirm our findings.
Funding Agencies
None
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Affiliation(s)
- C Law
- University of Toronto Faculty of Medicine, Toronto, ON, Canada
| | - S Fischer
- University Health Network, Toronto, ON, Canada
| | - J Knox
- Princess Margaret Hospital Cancer Centre, Toronto, ON, Canada
| | - S Gallinger
- Princess Margaret Hospital Cancer Centre, Toronto, ON, Canada
| | - S Ramotar
- Princess Margaret Hospital Cancer Centre, Toronto, ON, Canada
| | - D Anna
- Princess Margaret Hospital Cancer Centre, Toronto, ON, Canada
| | - G May
- St. Michael’s Hospital, Toronto, ON, Canada
| | - P D James
- University Health Network, Toronto, ON, Canada
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11
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Monachese M, Li S, Salim M, Guimaraes L, James PD. A243 A RETROSPECTIVE REVIEW OF THE RADIOGRAPHIC DIAGNOSIS AND SURGICAL RESECTION RATES OF PANCREATIC SEROUS CYSTS. J Can Assoc Gastroenterol 2021. [DOI: 10.1093/jcag/gwab002.241] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Pancreatic cystic lesions are increasingly identified in persons undergoing abdominal imaging. Serous cystic neoplasms (SCNs) have a very low risk of malignant transformation. Resection of SCNs is not recommended in the absence of related symptoms. The accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) to identify SCNs is not known and may impact clinical care.
Aims
To evaluate the accuracy of computed tomography (CT) and magnetic resonance imaging (MRI) for the diagnosis of SCN. To see how this can impact the decision to resect suspected SCNs.
Methods
Retrospective cohort study of patients from the University Health Network with suspected SCNs from 2017–2020 who underwent either a CT or MRI of the abdomen. Reports noting pancreatic cystic lesions were identified and reviewed. Only cases with suspected SCNs were included. Clinical (age, sex, symptoms, treatment) and radiographic (type of imaging, reported cyst characteristics) data was collected. Pathology was reviewed for all cases where the cysts was biopsied or resected during follow-up. The gold standard for the diagnosis for SCN was pathology of resected specimen or EUS-guided biopsy cytopathology showing no evidence of a mucinous lesion, CEA level below 10ug per L and amylase level below 50 U/L.
Results
163 patients were included in the study. 99 (61%) were female and 98 (60%) underwent CT scan. EUS-guided biopsy was performed in 24 (15%) of patients and 8 (5%) had surgical resection. Multidisciplinary review was performed in 6 of the 8 cases that went to surgery. Of the resected specimens, 5 (63%) were SCN, 1 was a mucinous cystic lesion, 1 was a neuroendocrine tumor and 1 was a carcinoma. Two patients underwent EUS evaluation prior to surgical resection. In one case SCN was resected when EUS reported an undetermined cyst type. Reasons for surgical resection were: the diagnosis of serous cyst was not definitive (n=5), symptoms (n=2), and high-risk mucinous cystic neoplasm identified on EUS (n=1). Of 30 patients with pathology available, 15 (50%) were confirmed to have a SCN. CT and MRI had a sensitivity, specificity, positive predictive value and negative predictive value of 93%, 25%, 52% and 80%, respectively.
Conclusions
Surgical resection for SCN lesions is driven by diagnostic uncertainty after cross-sectional imaging. Multidisciplinary review and EUS evaluation may improve diagnostic accuracy and should be considered prior to surgical resection of possible SCN lesions.
Funding Agencies
None
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Affiliation(s)
- M Monachese
- Gastroenterology, University of Toronto, Toronto, ON, Canada
| | - S Li
- Gastroenterology, University of Toronto, Toronto, ON, Canada
| | - M Salim
- University Health Network, Toronto, ON, Canada
| | - L Guimaraes
- Gastroenterology, University of Toronto, Toronto, ON, Canada
| | - P D James
- Gastroenterology, University of Toronto, Toronto, ON, Canada
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12
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Gimpaya N, Khan R, Gallinger ZR, Scaffidi MA, Al Abdulqader AK, Ahmed M, Gholami R, Ramkissoon A, James PD, Mosko J, Griller N, Bansal R, Grover SC. A77 A REUSABLE POLYCARBONATE BOX TO DECREASE DROPLET CONTAMINATION DURING UPPER ENDOSCOPY: A SIMULATION-BASED STUDY FOR THE COVID-19 PANDEMIC. J Can Assoc Gastroenterol 2021. [PMCID: PMC7989228 DOI: 10.1093/jcag/gwab002.075] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background Upper gastrointestinal (GI) endoscopic procedures are aerosol-generating, increasing the risk of healthcare workers (HCW) contracting Coronavirus disease 2019 (COVID-19). Aims To present a polycarbonate box (EndoBox) designed for use in upper GI endoscopy and evaluate its impact on the contamination of endoscopy staff during simulated procedures. Methods Simulated gastroscopies were performed using an upper body simulator placed in left lateral decubitus (LLD) and supine positions. The endoscopist and assistant wore personal protective equipment. Droplet exposure was measured using fluorescent abiotic surrogate particles. Two blinded observers independently viewed images from each scenario to qualitatively evaluate contamination levels. The primary outcome was the level of HCW contamination by droplets generated from a simulated cough with and without the EndoBox on the upper body simulator. The endoscopist’s ergonomic behaviour was also assessed using the Rapid Upper Limb Assessment (RULA) tool. Results Without the EndoBox, there was a higher level of contamination on the endoscopist when the upper body simulator is in the LLD position. A higher level of contamination was observed on the assistant when the simulator is in supine position. With the EndoBox, the contamination levels on the endoscopy staff were lower in both LLD and supine scenarios. The endoscopist’s ergonomics were rated 2 to 3 on the RULA tool when using the EndoBox. Conclusions The EndoBox reduces macroscopic droplet contamination during simulated gastroscopy. The endoscopist’s risk of musculoskeletal injury remained in the low risk categories as assessed by the RULA tool. Another advantage of the EndoBox design is the arch extending from the bottom that allows for removal of the box without withdrawing the endoscope. This enables rapid access to the patient’s airway if they experience respiratory distress. This study was limited by an inability to assess microscopic contamination and contamination at the level of the port or buttons when suction is applied. Within these limitations, the EndoBox may be a useful adjunct to traditional personal protective equipment. Funding Agencies SMHA AFP COVID-Related Innovation Funds
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Affiliation(s)
- N Gimpaya
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
| | - R Khan
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Z R Gallinger
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - M A Scaffidi
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
| | | | - M Ahmed
- University Hospitals Birmingham NHS Foundation Trust, Birmingham, Birmingham, United Kingdom
| | - R Gholami
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
| | - A Ramkissoon
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
| | - P D James
- University Health Network, Toronto, ON, Canada
| | - J Mosko
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
| | - N Griller
- Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - R Bansal
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
| | - S C Grover
- Gastroenterology, St Michael’s Hospital, Toronto, ON, Canada
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13
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Sahai AV, James PD, Levy MJ, Monkewich G, Wyse J. Evidence-based recommendations for establishing and implementing an EUS program: Recommendations for sustainable success and improved clinical outcomes across the continuum of care. Endosc Ultrasound 2020; 9:1-5. [PMID: 32056988 PMCID: PMC7038728 DOI: 10.4103/eus.eus_2_20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Affiliation(s)
- Anand V Sahai
- Department of Gastroenterology, University of Montréal, Montréal, Quebec, Canada
| | - Paul D James
- Division of Gastroenterology and Advanced Endoscopy, The University Health Network, Toronto, Canada
| | - Michael J Levy
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MI, USA
| | - Gregory Monkewich
- Department of Gastroenterology, Lions Gate Hospital, Burnaby Hospital, British Columbia, Canada
| | - Jonathan Wyse
- Division of Gastroenterology, Jewish General Hospital, Montréal, Quebec, Canada
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14
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Leung KK, Khan U, Zhang M, McCurdy JD, James PD. History of malignancy and relevant symptoms may predict a positive computed tomography enterography in obscure gastrointestinal bleeds. J Gastroenterol Hepatol 2019; 34:1511-1516. [PMID: 30965387 DOI: 10.1111/jgh.14682] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 03/24/2019] [Accepted: 04/03/2019] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM This study aimed to assess the clinical utility of computed tomography enterography (CTE) and identify factors associated with a diagnostic CTE for patients with obscure gastrointestinal bleeding (OGIB). METHODS A retrospective observational study was performed at a Canadian tertiary care center from 2005 to 2015. A total of 138 patients underwent a CTE for OGIB. Univariate and multivariate logistic regressions were performed to determine factors associated with a diagnostic CTE. A highly sensitive clinical rule was then developed to help identify OGIB patients for whom a CTE may be beneficial in their clinical work-up. RESULTS A possible bleeding source was identified in 30 (22%) cases. The presence of abdominal or constitutional symptoms as well as history of colorectal cancer was significantly associated with a positive CTE in univariate and multivariate analyses (P < 0.05). A positive CTE could be predicted based on the presence of abdominal or constitutional symptoms and history of colorectal cancer with 90% sensitivity (95% CI 74-98%) in our population. CONCLUSION CTE identified a possible source of OGIB in one in five cases. In patients with the presence of abdominal or constitutional symptoms and a personal history of colorectal cancer, CTE may contribute to their diagnostic work-up.
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Affiliation(s)
- Kristel K Leung
- Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
| | - Usman Khan
- Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
| | - Mei Zhang
- Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Jeffrey D McCurdy
- Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada.,Ottawa Hospital Research Institute, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
| | - Paul D James
- Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada
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15
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Chaudhuri D, Bishay K, Tandon P, Trivedi V, James PD, Kelly EM, Thavorn K, Kyeremanteng K. Prophylactic endotracheal intubation in critically ill patients with upper gastrointestinal bleed: A systematic review and meta-analysis. JGH Open 2019; 4:22-28. [PMID: 32055693 PMCID: PMC7008165 DOI: 10.1002/jgh3.12195] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 04/23/2019] [Indexed: 12/12/2022]
Abstract
Background and Aim Prophylactic endotracheal intubation for airway protection prior to endoscopy for the management of severe upper gastrointestinal bleeding (UGIB) is controversial. The aim of this meta‐analysis is to examine the clinical outcomes and costs related to prophylactic endotracheal intubation compared to no intubation in UGIB. Methods EMBASE, MEDLINE, and the Cochrane Central Register of Controlled Trials were used to identify studies through June 2017. Data regarding mortality, total hospital and intensive care unit length of stay (LOS), pneumonia, and cardiovascular events were collected. The DerSimonian‐Laird random effects models were used to calculate the inverse variance‐based weighted, pooled treatment effect across studies. Results Seven studies (five manuscripts and two abstracts) were identified (5662 total patients). Prophylactic intubation conferred an increased risk of death (odds ratio [OR], 2.59, 95% confidence interval [CI]: 1.01–6.64), hospital LOS (mean difference, 0.96 days, 95% CI: 0.26–1.67), and pneumonia (OR 6.58, 95% CI: 4.91–8.81]) compared to endoscopy without intubation. The LOS‐related cost was greater when prophylactic intubation was performed ($9020 per patient, 95% CI: $6962–10 609) compared to when it was not performed ($7510 per patient, 95% CI: $6486–8432). There was no difference in risk of cardiovascular events after sensitivity analysis. Conclusion Prophylactic intubation in severe UGIB is associated with a greater risk of pneumonia, LOS, death, and cost compared to endoscopy without intubation. Randomized trials examining this issue are warranted.
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Affiliation(s)
- Dipayan Chaudhuri
- Department of Critical Care McMaster University Hamilton Ontario Canada
| | - Kirles Bishay
- Department of Gastroenterology University of Toronto Toronto Ontario Canada
| | - Parul Tandon
- Department of Gastroenterology University of Toronto Toronto Ontario Canada
| | - Vatsal Trivedi
- Department of Anesthesiology and Pain Medicine The Ottawa Hospital, University of Ottawa Ottawa Ontario Canada
| | - Paul D James
- Department of Gastroenterology University of Toronto Toronto Ontario Canada
| | - Erin M Kelly
- Department of Medicine The Ottawa Hospital, University of Ottawa Ottawa Ontario Canada.,Ottawa Hospital Research Institute The Ottawa Hospital Ottawa Ontario Canada
| | - Kednapa Thavorn
- School of Epidemiology, Public Health and Preventative Medicine, Faculty of Medicine University of Ottawa Ottawa Ontario Canada.,Division of Palliative Care The Ottawa Hospital, University of Ottawa Ottawa Ontario Canada
| | - Kwadwo Kyeremanteng
- Department of Medicine The Ottawa Hospital, University of Ottawa Ottawa Ontario Canada.,Ottawa Hospital Research Institute The Ottawa Hospital Ottawa Ontario Canada.,Division of Critical Care The Ottawa Hospital, University of Ottawa Ottawa Ontario Canada.,Institute du Savoir Montfort Ottawa Ontario Canada
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16
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Barkun AN, Martel M, Epstein IL, Hallé P, Hilsden RJ, James PD, Rostom A, Sey M, Singh H, Sultanian R, Telford JJ, von Renteln D, Candido K. A225 THE BOWEL CLEANSING NATIONAL INITIATIVE (BCLEAN): A HIGH-VOLUME SPLIT-DOSE POLYETHYLENE GLYCOL (PEG) PREPARATION VERSUS A LOW-VOLUME SPLIT-DOSE PEG SOLUTION. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.224] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- A N Barkun
- McGill University Health Center, McGill University, Montreal, QC, Canada
| | - M Martel
- McGill University Health Center, McGill University, Montreal, QC, Canada
| | | | - P Hallé
- Hôpital du Saint-Sacrement, Québec, QC, Canada
| | | | - P D James
- University Health Network , Toronto, ON, Canada
| | - A Rostom
- University of Ottawa, Ottawa, ON, Canada
| | - M Sey
- Western University, London, ON, Canada
| | - H Singh
- University of Manitoba, Winnipeg, MB, Canada
| | - R Sultanian
- Division of Gastroenterology, University of Alberta, Edmonton, AB, Canada
| | - J J Telford
- University of British Columbia, Vancouver, BC, Canada
| | | | - K Candido
- McGill University Health Center, McGill University, Montreal, QC, Canada
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17
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Khan U, Abunassar M, Chatterjee A, James PD. Advanced Endoscopy Trainee Involvement Early in EUS Training May Be Associated with an Increased Risk of Adverse Events. J Can Assoc Gastroenterol 2018; 3:83-90. [PMID: 32328547 PMCID: PMC7165263 DOI: 10.1093/jcag/gwy066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 12/10/2018] [Indexed: 02/07/2023] Open
Abstract
Background The quality of endoscopic ultrasound (EUS) involving advanced endoscopy trainees (AETs) is not well understood. In this study, we aimed to examine adverse events (AE) risk and diagnostic yield of EUS procedures involving AETs. Methods We conducted a retrospective single-centre review from September 2009 to August 2015. Clinical, procedural, cytological, and hospital visit data within 30 days of the EUS procedure was collected. Primary outcomes were occurrence of an AE and a diagnostic specimen on cytopathology. Each AE was classified as “definitely related,” “possibly related,” or “not related” to the EUS procedure based on a previously defined consensus approach. Advanced endoscopy trainee involvement was established through the operative report. Results Our study included 1657 EUS procedures, of which 27% (451 of 1657) involved AETs. Endoscopic ultrasound was most commonly performed to evaluate pancreatic pathology (46% of cases). Overall AE incidence was 3.4%; it was 4.9% when an AET was involved and 2.8% when the EUS was performed without an AET (P = 0.04). The risk of an AE when AETs were involved was greatest in the first three months of training (7.9% versus 2.7%, P = 0.04). Multivariate analysis limited to the first three months of training demonstrated AET involvement to be associated with an increased AE risk after adjusting for patient and procedural factors (adjusted OR 3.2; 95% CI, 1.1–8.7; P = 0.03). The overall diagnostic yield was 76%. This was not compromised by AET involvement for any quartile of training. Conclusions We observed an increased risk of EUS-related AEs when procedures involved AETs during the first three months of training.
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Affiliation(s)
- Usman Khan
- Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Michael Abunassar
- Division of Gastroenterology, Department of Medicine, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.,Division of Gastroenterology, Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
| | - Avijit Chatterjee
- Division of Gastroenterology, Department of Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
| | - Paul D James
- Division of Gastroenterology, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada
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18
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Meng ZW, Marr KJ, Mohamed R, James PD. Long-Term Effectiveness, Safety and Mortality Associated with the Use of TC-325 for Malignancy-Related Upper Gastrointestinal Bleeds: A Multicentre Retrospective Study. J Can Assoc Gastroenterol 2018; 2:91-97. [PMID: 31294371 PMCID: PMC6507283 DOI: 10.1093/jcag/gwy031] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Background and Study Aims Malignant-related upper gastrointestinal bleeding (MRUGIB) is difficult to treat by conventional endoscopic methods. We sought to determine the efficacy, safety and mortality associated with the use of TC-325 for the treatment of MUGIB. Patients and Methods This is a multicentre, retrospective study at the University of Calgary and University of Ottawa performed between January 1, 2010, and July 30, 2016. TC-325 use was identified via staff polling, product order forms and endoscopic records review. Once identified, patient charts and online records were examined to identify MRUGIB cases and to assess our primary and secondary endpoints. Outcomes The primary outcome was hemostasis at seven days. Secondary outcomes include immediate hemostasis, early hemostasis, hemostasis at 14 days, 30-day mortality, adverse events related to TC-325 therapy and the need for repeat endoscopic intervention, surgery or transarterial embolization. Results Twenty-five patients were identified. The median age was 62 years (interquartile range [IQR] 52.5–76), and most were male (64%). TC-325 was the primary treatment modality in 20 patients (80%). Hemostasis was 88%, 89%, 58% and 50% at 24 hours, 72 hours, 7 days and 14 days, respectively. Five patients underwent repeat endoscopy, two patients required surgical intervention, and transarterial embolization was not required. Twelve patients died by 30 days (48%). There were no complications directly attributed to the use of TC-325. Conclusions TC-325 is effective for achieving and maintaining hemostasis in patients with malignancy-related upper gastrointestinal bleeding, and most patients do not require additional interventions. The 30-day mortality risk in this group of patients is high.
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Affiliation(s)
- Zhao Wu Meng
- Department of Medicine, University of Ottawa, Ottawa, Canada
| | - Kaleb J Marr
- Department of Medicine, University of Calgary, Calgary, Canada
| | - Rachid Mohamed
- Department of Medicine, University of Calgary, Calgary, Canada
| | - Paul D James
- Department of Medicine, University of Ottawa, Ottawa, Canada.,Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Canada.,Department of Medicine, University Health Network, University of Toronto, Toronto, Canada
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19
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Thorne JG, James PD, Reid RL. Heavy menstrual bleeding: is tranexamic acid a safe adjunct to combined hormonal contraception? Contraception 2018; 98:1-3. [DOI: 10.1016/j.contraception.2018.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/14/2018] [Accepted: 02/15/2018] [Indexed: 10/17/2022]
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20
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Murthy SK, Benchimol EI, Tinmouth J, James PD, Ducharme R, Rostom A, Dubé C. Temporal trends in postcolonoscopy colorectal cancer rates in 50- to 74-year-old persons: a population-based study. Gastrointest Endosc 2018; 87:1324-1334.e4. [PMID: 29317271 DOI: 10.1016/j.gie.2017.12.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [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: 07/20/2017] [Accepted: 12/10/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Colorectal cancers (CRCs) diagnosed between 6 and 36 months after colonoscopy, termed postcolonoscopy CRCs (PCCRCs), arise primarily due to missed or inadequately treated neoplasms during colonoscopy. Introduction of multiple quality indicators and technological advances to colonoscopy practice should have reduced the PCCRC rate over time. We assessed temporal trends in the population rate of PCCRC as a measure of changing colonoscopy quality. METHODS We conducted a population-based retrospective cohort study of persons aged 50 to 74 years without advanced risk factors for CRC who underwent complete colonoscopy in Ontario, Canada between 1996 and 2010. We defined the PCCRC rate as the proportion of individuals diagnosed with CRC within 36 months of colonoscopy that had PCCRC. We compared age-adjusted and sex-adjusted rates of PCCRC over time based on 3 periods (1996-2001, 2001-2006 and 2006-2010) and assessed the independent association between time period and PCCRC risk through multivariable regression, with respect to all PCCRCs, proximal PCCRC and distal PCCRC. RESULTS There was a marked increase in colonoscopy volumes over the study period, particularly in younger age groups and non-hospital settings. Among 1,093,658 eligible persons the PCCRC rate remained stable at approximately 8% over the 15-year study period. The adjusted odds of PCCRC, distal PCCRC and proximal PCCRC, comparing the 2006 to 2010 period with the 1996 to 2001 period, were 1.14 (95% confidence interval [CI], 1.0-1.31), 1.11 (95% CI, 0.91-1.34), and 1.14 (95% CI, 0.94-1.38), respectively. Temporal trends in PCCRC risk did not differ by endoscopist specialty or institutional setting after covariate adjustment. CONCLUSION The PCCRC rate in Ontario has remained consistently high over time. Widespread initiatives are needed to improve colonoscopy quality.
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Affiliation(s)
- Sanjay K Murthy
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Institute for Clinical Evaluative Sciences (Toronto) and ICES uOttawa, Ontario, Canada
| | - Eric I Benchimol
- Institute for Clinical Evaluative Sciences (Toronto) and ICES uOttawa, Ontario, Canada; Department of Pediatrics, University of Ottawa, Ottawa, Ontario, Canada; Children's Hospital of Eastern Ontario (CHEO) Research Institute, Ottawa, Ontario, Canada
| | - Jill Tinmouth
- Institute for Clinical Evaluative Sciences (Toronto) and ICES uOttawa, Ontario, Canada; Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada; Sunnybrook Research Institute, Toronto, Ontario, Canada
| | - Paul D James
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Robin Ducharme
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Institute for Clinical Evaluative Sciences (Toronto) and ICES uOttawa, Ontario, Canada
| | - Alaa Rostom
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Catherine Dubé
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
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21
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Khan U, Meng Z, Dhaliwal H, Chatterjee A, Grégoire S, Heitman S, James PD. A329 CAN THE CALGARY BILE LEAK RULE AVOID THE NEED FOR REPEAT ERCPS IN OTTAWA? A VALIDATION STUDY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.329] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- U Khan
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Z Meng
- Department of Medicine and The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - H Dhaliwal
- Department of Medicine and The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - A Chatterjee
- Department of Medicine and The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - S Grégoire
- Department of Medicine and The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - S Heitman
- Department of Medicine, University of Calgary, Calgary, AB, Canada
| | - P D James
- Department of Medicine, University Health Network, University of Toronto, Toronto, ON, Canada
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Khan U, Abunassar MJ, Chatterjee A, James PD. A222 TRAINEE INVOLVEMENT IN EUS PROCEDURES MAY INITIALLY BE ASSOCIATED WITH GREATER RISK AND LOWER DIAGNOSTIC YIELD: A LARGE SINGLE CENTRE STUDY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.222] [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] [Indexed: 11/12/2022] Open
Affiliation(s)
- U Khan
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - M J Abunassar
- Department of Medicine, University Health Network, University of Toronto, Toronto, ON, Canada
| | - A Chatterjee
- Department of Medicine and The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - P D James
- Department of Medicine, University Health Network, University of Toronto, Toronto, ON, Canada
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Theriault MD, Chiang A, James PD. A269 THE INCREMENTAL BENEFIT OF EUS-FNA FOR DIAGNOSING MALIGNANCY AMONG INDETERMINATE EXTRAHEPATIC BILIARY STRICTURES IN ADULT PATIENTS WHO UNDERGO ERCP WITH BRUSHING CYTOLOGY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.269] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- M D Theriault
- University of Medicine and Health Sciences, Embrun, ON, Canada
| | - A Chiang
- McMaster University, Hamilton, ON, Canada
| | - P D James
- Toronto General Hospital, Toronto, ON, Canada
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Bishay K, Chaudhuri D, Tandon P, Trivedi V, James PD, Kelly EM, Thavorn K, Kyeremanteng K. A48 PROPHYLACTIC ENDOTRACHEAL INTUBATION IN CRITICALLY ILL PATIENTS WITH UPPER GASTROINTESTINAL BLEED: A SYSTEMATIC REVIEW AND META-ANALYSIS. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.048] [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] [Indexed: 11/12/2022] Open
Affiliation(s)
- K Bishay
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - D Chaudhuri
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - P Tandon
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - V Trivedi
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - P D James
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - E M Kelly
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - K Thavorn
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
| | - K Kyeremanteng
- Gastroenterology and Hepatology, University of Ottawa, Ottawa, ON, Canada
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Leung K, Khan U, McCurdy J, James PD. A208 OPTIMIZING THE UTILITY OF CT ENTEROGRAPHY FOR THE EVALUATION OF OBSCURE GASTROINTESTINAL BLEEDING: A NOVEL HIGHLY SENSITIVE CLINICAL PREDICTION TOOL. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.208] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- K Leung
- Internal Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - U Khan
- Internal Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - J McCurdy
- Internal Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, ON, Canada
| | - P D James
- Department of Medicine, University Health Network, University of Toronto, Toronto, ON, Canada
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Khan U, Abunassar MJ, Chatterjee A, James PD. A223 FACTORS ASSOCIATED WITH EUS DIAGNOSTIC YIELD AND ADVERSE EVENT RISK: A LARGE RETROSPECTIVE SINGLE CENTRE STUDY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.223] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- U Khan
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - M J Abunassar
- Department of Medicine, University Health Network, University of Toronto, Toronto, ON, Canada
| | - A Chatterjee
- Department of Medicine and The Ottawa Hospital Research Institute, The Ottawa Hospital, Ottawa, ON, Canada
| | - P D James
- Department of Medicine, University Health Network, University of Toronto, Toronto, ON, Canada
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Abunassar MJ, Chatterjee A, Marginean C, Martel G, Murthy S, Dube C, Rostom A, James PD. A324 FOUR OR MORE EUS-FNA PASSES FOR PANCREATIC SOLID LESIONS IS ASSOCIATED WITH INCREASED RISK WITHOUT IMPROVING DIAGNOSTIC YIELD: RESULTS FROM THE OTTAWA HOSPITAL EUS RYSE QA INITIATIVE. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.325] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- M J Abunassar
- The University of Ottawa, The Ottawa Hospital, Department of Medicine, Division of Gastroenterology, Ottawa, ON, Canada
| | - A Chatterjee
- The University of Ottawa, The Ottawa Hospital, Department of Medicine, Division of Gastroenterology, Ottawa, ON, Canada
| | - C Marginean
- The University of Ottawa, The Ottawa Hospital, Department of Pathology, Ottawa, ON, Canada
| | - G Martel
- The University of Ottawa, The Ottawa Hospital, Department of Surgery, Division of Hepatobiliary Surgery, Ottawa, ON, Canada
| | - S Murthy
- The University of Ottawa, The Ottawa Hospital, Department of Medicine, Division of Gastroenterology, Ottawa, ON, Canada
| | - C Dube
- The University of Ottawa, The Ottawa Hospital, Department of Medicine, Division of Gastroenterology, Ottawa, ON, Canada
| | - A Rostom
- The University of Ottawa, The Ottawa Hospital, Department of Medicine, Division of Gastroenterology, Ottawa, ON, Canada
| | - P D James
- The University of Ottawa, The Ottawa Hospital, Department of Medicine, Division of Gastroenterology, Ottawa, ON, Canada
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Marr KJ, Meng Z, Mohamed R, James PD. A251 TC-325 USE IN MALIGNANT UPPER GASTROINTESTINAL BLEEDS: A MULTICENTRE RETROSPECTIVE STUDY. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy008.252] [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] [Indexed: 11/13/2022] Open
Affiliation(s)
- K J Marr
- The University of Calgary, Calgary, AB, Canada
| | - Z Meng
- The University of Ottawa, Ottawa, ON, Canada
| | - R Mohamed
- The University of Calgary, Calgary, AB, Canada
| | - P D James
- The University of Ottawa, Ottawa, ON, Canada
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James PD, Rabeneck L, Yun L, Paszat L, Baxter NN, Govindarajan A, Antonova L, Tinmouth JM. Repeated faecal occult blood testing is associated with decreased advanced colorectal cancer risk: A population-based study. J Med Screen 2017; 25:141-148. [PMID: 28862521 DOI: 10.1177/0969141317718860] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 12/14/2022]
Abstract
OBJECTIVE To evaluate the association between repeated faecal occult blood testing and advanced colorectal cancer risk at population level in Canada. METHODS A retrospective cohort study of all Ontario residents aged 56-74 diagnosed with colorectal cancer from 1 April 2007 to 31 March 2010, identified using health administrative data. The primary outcome was stage IV colorectal cancer, and primary exposure was faecal occult blood testing use within five years prior to colorectal cancer diagnosis. Patients were categorized into four mutually exclusive groups based on their exposure to faecal occult blood testing in the five years prior to colorectal cancer diagnosis: none, pre-diagnostic, repeated, and sporadic. Logistic regression was utilized to adjust for confounders. RESULTS Of 7753 patients (median age 66, interquartile range 61-70, 62% male) identified, 1694 (22%) presented with stage I, 2056 (27%) with stage II, 2428 (31%) with stage III, and 1575 (20%) with stage IV colorectal cancer. There were 4092 (53%) with no record of prior faecal occult blood testing, 1485 (19%) classified as pre-diagnostic, 1693 (22%) as sporadic, and 483 (6%) as repeated faecal occult blood testing. After adjusting for confounders, patients who had repeated faecal occult blood testing were significantly less likely to present with stage IV colorectal cancer at diagnosis (Odds ratio 0.46, 95% Confidence Interval 0.34-0.62) than those with no prior faecal occult blood testing. CONCLUSIONS Repeated faecal occult blood testing is associated with a decreased risk of advanced colorectal cancer. Our findings support the use of organized screening programmes that employ repeated faecal occult blood testing to improve colorectal cancer outcomes at population level.
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Affiliation(s)
- Paul D James
- 1 The Ottawa Health Research Institute and Department of Medicine, University of Ottawa, Ottawa, Canada.,2 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Linda Rabeneck
- 2 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,4 Prevention and Cancer Control, Cancer Care Ontario, Toronto, Ontario, Canada.,7 Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.,8 Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Lingsong Yun
- 3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Lawrence Paszat
- 2 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
| | - Nancy N Baxter
- 2 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,4 Prevention and Cancer Control, Cancer Care Ontario, Toronto, Ontario, Canada.,5 Department of Surgery, University of Toronto, Toronto, Ontario, Canada.,6 Li Ka Shing Research Institute, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Anand Govindarajan
- 3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,5 Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Lilia Antonova
- 1 The Ottawa Health Research Institute and Department of Medicine, University of Ottawa, Ottawa, Canada
| | - Jill M Tinmouth
- 2 Department of Medicine, University of Toronto, Toronto, Ontario, Canada.,3 Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada.,4 Prevention and Cancer Control, Cancer Care Ontario, Toronto, Ontario, Canada.,9 Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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Larjani S, Bruckschwaiger VR, Stephens LA, James PD, Martel G, Mimeault R, Balaa FK, Bertens KA. Paraduodenal pancreatitis as an uncommon cause of gastric outlet obstruction: A case report and review of the literature. Int J Surg Case Rep 2017; 39:14-18. [PMID: 28783521 PMCID: PMC5545816 DOI: 10.1016/j.ijscr.2017.07.043] [Citation(s) in RCA: 7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/19/2017] [Accepted: 07/19/2017] [Indexed: 12/18/2022] Open
Abstract
Paraduodenal pancreatitis is a rare form of focal chronic or recurrent pancreatitis that can present as gastric outlet obstruction. Endoscopic ultrasound and fine needle aspiration biopsy provides the best diagnostic modality. Key histopathologic features include Brunner gland hyperplasia, myofibroblastic proliferation, spindle cells and foamy cells. Cross-sectional imaging demonstrates a fibrotic, sheet-like mass with cystic change between the duodenal wall and pancreatic head. The optimal treatment for refractory symptoms is pancreaticoduodenectomy.
Introduction Paraduodenal pancreatitis (PP) is an under-recognized form of focal chronic or recurrent pancreatitis. Since PP presents with non-specific symptoms and shares radiological and histopathological features with other entities, it can be challenging to diagnose. Presentation of case report Herein, a case of a 64 year-old Caucasian male with PP presenting with recurrent gastric outlet obstruction (GOO) is detailed. Over the course of two years, he underwent multiple balloon dilatations for symptom management. His diagnostic course was complicated by inconclusive and misleading biopsies. Conclusion PP can rarely present as GOO in otherwise asymptomatic patients. A preoperative pathologic diagnosis can be difficult to obtain, and in this case delayed definitive surgical management. The case is discussed in detail, and a concise review the current literature was undertaken.
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Affiliation(s)
- Soroush Larjani
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Vanessa R Bruckschwaiger
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Leslie A Stephens
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Paul D James
- Division of Gastroenteretology, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Guillaume Martel
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Richard Mimeault
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Fady K Balaa
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada
| | - Kimberly A Bertens
- Liver and Pancreas Unit, Division of General Surgery, The Ottawa Hospital, University of Ottawa, Ontario, Canada.
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James PD, Hegagi M, Antonova L, Tinmouth J, Heitman SJ, Simone C, Yeung E, Yong E. Regional differences in use of endoscopic ultrasonography in Ontario: a population-based retrospective cohort study. CMAJ Open 2017; 5:E437-E443. [PMID: 28600449 PMCID: PMC5498178 DOI: 10.9778/cmajo.20160153] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 12/26/2022] Open
Abstract
BACKGROUND Endoscopic ultrasonography is a safe and accurate modality for evaluating and managing hepatobiliary and gastrointestinal conditions (malignant and nonmalignant); its use is increasing. The aim of this study was to describe regional trends in the use of endoscopic ultrasonography in Ontario. METHODS We conducted a population-based retrospective cohort study using health administrative databases. We identified all patients who underwent an endoscopic ultrasound procedure in Ontario from 2003 to 2011 using physician billing data. Patient, physician and institution characteristics were examined. The primary outcome was use of endoscopic ultrasonography. RESULTS We identified 9076 endoscopic ultrasound procedures performed in 8001 patients (3858 women [48.2%]; median patient age at first procedure 59 years). A total of 3066 procedures (33.8%) involved fine-needle aspiration. Use of endoscopic ultrasonography increased 17-fold over the study period. In 2011, people living in the health region with the highest rate of use of endoscopic ultrasonography were more than 4 times more likely to undergo the procedure than people living in the health region with the lowest rate of use (standardized rate 61.6 v. 12.9 per 100 000). About 7 in 10 endoscopic ultrasound procedures were performed in an academic institution or regional cancer centre. All 17 endoscopists performing endoscopic ultrasonography during the study period practised in urban areas. INTERPRETATION Although the use of endoscopic ultrasonography increased over time in Ontario, there were marked regional differences in use. Provincial needs- and evidence-based initiatives may be needed to narrow the regional gaps in provision of endoscopic ultrasound services in the province.
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Affiliation(s)
- Paul D James
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Mae Hegagi
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Lilia Antonova
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Jill Tinmouth
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Steven J Heitman
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Carmine Simone
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Elaine Yeung
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
| | - Elaine Yong
- Affiliations: Department of Medicine and Ottawa Hospital Research Institute (James, Hegagi, Antonova), University of Ottawa, Ottawa, Ont.; Department of Medicine (Tinmouth, Yeung, Yong), University of Toronto, Toronto, Ont.; Departments of Medicine and of Community Health Sciences (Heitman), University of Calgary, Calgary, Alta.; Department of Medicine (Tinmouth, Yong), Sunnybrook Health Sciences Centre; Institute of Health Policy, Management and Evaluation (Tinmouth), University of Toronto; Cancer Care Ontario (Tinmouth); Department of Surgery (Simone), University of Toronto; Medicine Program (Yeung), The Scarborough Hospital, Toronto, Ont
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Murthy SK, James PD, Antonova L, Chalifoux M, Tanuseputro P. High end of life health care costs and hospitalization burden in inflammatory bowel disease patients: A population-based study. PLoS One 2017; 12:e0177211. [PMID: 28498877 PMCID: PMC5428925 DOI: 10.1371/journal.pone.0177211] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 04/24/2017] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND End of life (EOL) care is associated with greater costs, particularly for acute care services. In patients with inflammatory bowel disease (IBD), EOL costs may be accentuated due to reliance on hospital-based services and expensive diagnostic tests and treatments. We aimed to compare EOL health care use and costs between IBD and non-IBD decedents. METHODS We conducted a retrospective cohort study of all decedents of Ontario, Canada between 2010 and 2013 using linked health administrative data. IBD (N = 2,214) and non-IBD (N = 262,540) decedents were compared on total direct health care costs in the last year of life and hospitalization time during the last 90 days of life. RESULTS During the last 90 days of life, IBD patients spent an average of 16 days in hospital, equal to 2.1 greater adjusted hospital days (95% confidence interval [CI] 1.5-2.8 days) than non-IBD patients. IBD diagnosis was associated with $7,210 CAD (95% CI $5,005 - $9,464) higher adjusted per-patient cost in the last year of life, of which 76% was due to excess hospitalization costs. EOL cost of IBD care was higher than 15 of 16 studied chronic conditions. Health care costs rose sharply in the last 90 days of life, primarily due to escalating hospitalization costs. CONCLUSIONS IBD patients spend more time in hospital and incur substantially greater health care costs than other decedents as they approach the EOL. These excess costs could be curtailed through avoidance of unnecessary hospitalizations and expensive treatments in the setting of irreversible deterioration.
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Affiliation(s)
- Sanjay K. Murthy
- Department of Medicine, Division of Gastroenterology, The Ottawa Hospital and University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Institute for Clinical Evaluative Sciences (ICES uOttawa), Ottawa, Ontario, Canada
- * E-mail:
| | - Paul D. James
- Department of Medicine, Division of Gastroenterology, The Ottawa Hospital and University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Lilia Antonova
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Mathieu Chalifoux
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Institute for Clinical Evaluative Sciences (ICES uOttawa), Ottawa, Ontario, Canada
| | - Peter Tanuseputro
- Department of Medicine, Division of Gastroenterology, The Ottawa Hospital and University of Ottawa, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Institute for Clinical Evaluative Sciences (ICES uOttawa), Ottawa, Ontario, Canada
- Bruyère Research Institute, Ottawa, Ontario, Canada
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Tsolakis AV, James PD, Kaplan GG, Myers RP, Hubbard J, Wilson T, Zimmer S, Mohamed R, Cole M, Bass S, Swain MG, Heitman SJ. Clinical prediction rule to determine the need for repeat ERCP after endoscopic treatment of postsurgical bile leaks. Gastrointest Endosc 2017; 85:1047-1056.e1. [PMID: 27810250 DOI: 10.1016/j.gie.2016.10.027] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/14/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS In patients who have undergone ERCP with biliary stenting for postsurgical bile leaks, the optimal method (ERCP or gastroscopy) and timing of stent removal is controversial. We developed a clinical prediction rule to identify cases in which a repeat ERCP is unnecessary. METHODS Population-based study of all patients who underwent ERCP for management of surgically induced bile leaks between 2000 and 2012. Multivariate and binary recursive partitioning analyses were performed to generate a rule predicting the absence of biliary pathology on repeat endoscopic evaluation. RESULTS A total of 259 patients were included. On multivariate analysis, postsurgical normal alkaline phosphatase (ALP; OR, 2.26; 95% CI, 1.03-4.99), time from surgery to first ERCP < 8 days (OR, 2.47; 95% CI, 1.15-5.31), and minor leak with no other pathology on initial ERCP (OR, 6.74; 95% CI, 1.75-25.89) were independently associated with the absence of persistent bile leak and other pathology on repeat ERCP. The derived rule included laparoscopic cholecystectomy, normal postsurgical ALP, minor leak with no other pathology on initial ERCP, and an interval from initial to repeat ERCP between 4 and 8 weeks. When all 4 criteria were met, the rule had a sensitivity of 94% (95% CI, 83%-99%) and a negative predictive value of 93% (95% CI, 81%-99%). Optimism-adjusted sensitivity and negative predictive value were 88% (95% CI, 76%-96%) and 86% (95% CI, 73%-96%), respectively. CONCLUSIONS This clinical decision rule identifies patients who can have their biliary stents removed via gastroscopy, which may improve patient safety and healthcare utilization.
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Affiliation(s)
- Apostolos V Tsolakis
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Paul D James
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Gilaad G Kaplan
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Robert P Myers
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - James Hubbard
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Todd Wilson
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Scott Zimmer
- Medical Services, Alberta Health Services, Calgary, Alberta, Canada
| | - Rachid Mohamed
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Martin Cole
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Sydney Bass
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Mark G Swain
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Steven J Heitman
- Department of Medicine, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada; Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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James PD, Meng ZW, Zhang M, Belletrutti PJ, Mohamed R, Ghali W, Roberts DJ, Martel G, Heitman SJ. The incremental benefit of EUS for identifying unresectable disease among adults with pancreatic adenocarcinoma: A meta-analysis. PLoS One 2017; 12:e0173687. [PMID: 28319148 PMCID: PMC5358870 DOI: 10.1371/journal.pone.0173687] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 02/24/2017] [Indexed: 12/18/2022] Open
Abstract
Background and study aims It is unclear to what extent EUS influences the surgical management of patients with pancreatic adenocarcinoma. This systematic review sought to determine if EUS evaluation improves the identification of unresectable disease among adults with pancreatic adenocarcinoma. Patients and methods We searched MEDLINE, EMBASE, bibliographies of included articles and conference proceedings for studies reporting original data regarding surgical management and/or survival among patients with pancreatic adenocarcinoma, from inception to January 7th 2017. Our main outcome was the incremental benefit of EUS for the identification of unresectable disease (IBEUS). The pooled IBEUS were calculated using random effects models. Heterogeneity was explored using stratified meta-analysis and meta-regression. Results Among 4,903 citations identified, we included 8 cohort studies (study periods from 1992 to 2007) that examined the identification of unresectable disease (n = 795). Random effects meta-analysis suggested that EUS alone identified unresectable disease in 19% of patients (95% confidence interval [CI], 10–33%). Among those studies that considered portal or mesenteric vein invasion as potentially resectable, EUS alone was able to identify unresectable disease in 14% of patients (95% CI 8–24%) after a CT scan was performed. Limitations The majority of the included studies were retrospective. Conclusions EUS evaluation is associated with increased identification of unresectable disease among adults with pancreatic adenocarcinoma.
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Affiliation(s)
- Paul D. James
- Department of Medicine and the Ottawa Hospital Research Institute, Department of Medicine, University of Ottawa, Ottawa, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
- Department of Medicine, University of Calgary, Calgary, Canada
- Calgary Research and Education in Advanced Therapeutic Endoscopy (CREATE), Calgary, Canada
- * E-mail:
| | - Zhao Wu Meng
- Department of Medicine and the Ottawa Hospital Research Institute, Department of Medicine, University of Ottawa, Ottawa, Canada
| | - Mei Zhang
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
| | - Paul J. Belletrutti
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
- Department of Medicine, University of Calgary, Calgary, Canada
- Calgary Research and Education in Advanced Therapeutic Endoscopy (CREATE), Calgary, Canada
| | - Rachid Mohamed
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
- Department of Medicine, University of Calgary, Calgary, Canada
- Calgary Research and Education in Advanced Therapeutic Endoscopy (CREATE), Calgary, Canada
| | - William Ghali
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
- Department of Medicine, University of Calgary, Calgary, Canada
| | | | | | - Steven J. Heitman
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
- Department of Medicine, University of Calgary, Calgary, Canada
- Calgary Research and Education in Advanced Therapeutic Endoscopy (CREATE), Calgary, Canada
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James PD, Mahlangu J, Bidlingmaier C, Mingot-Castellano ME, Chitlur M, Fogarty PF, Cuker A, Mancuso ME, Holme PA, Grabell J, Satkunam N, Hopman WM, Mathew P. Evaluation of the utility of the ISTH-BAT in haemophilia carriers: a multinational study. Haemophilia 2017; 22:912-918. [PMID: 27868369 DOI: 10.1111/hae.13089] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2016] [Indexed: 11/28/2022]
Abstract
INTRODUCTION There has been increasing recognition in recent years that female carriers of haemophilia manifest abnormal bleeding; however, data on the use of bleeding assessment tools in this population are lacking. AIM Our objective was to validate the ISTH-BAT in haemophilia carriers to describe bleeding symptoms and allow for comparisons with factor levels and other patient groups. METHODS This was a prospective, observational, cross-sectional study performed by members of Global Emerging HEmostasis Panel (GEHEP). Unselected consecutive haemophilia carriers were recruited and a CRF and the ISTH-BAT were completed by study personnel. RESULTS A total of 168 haemophilia carriers were enrolled: 155 haemophilia A and 13 haemophilia B. The mean age was 40 years (range: 20-82). Carriers had higher mean bleeding scores (BS) compared with age-matched controls (n = 46; 5.7 vs. 1.43; P < 0.0001) and Type 3 VWD OC (n = 32; 3.0; P = 0.009), but lower BS compared with women with Type 1 VWD (n = 83; 8.7; P < 0.0001). Fifteen carriers reported haemarthrosis, and of those six had normal FVIII/FIX levels. There was a significant but weak negative correlation between BS and factor level (Spearman's r2 = -0.36, P < 0.001). CONCLUSION Our results show that haemophilia carriers experience abnormal bleeding, including haemarthrosis. Overall, BS in women with Type 1 VWD > haemophilia carriers > Type 3 VWD OC > controls. Understanding the performance of the ISTH-BAT in this population is a critical step in future research aimed at investigating the underlying pathophysiology of abnormal bleeding, with the ultimate goal of optimizing treatment.
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Affiliation(s)
- P D James
- Queen's University, Kingston, ON, Canada
| | - J Mahlangu
- Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - C Bidlingmaier
- Dr. von Hauner's Children's University Hospital, Munich, Germany
| | | | - M Chitlur
- Children's Hospital of Michigan, Detroit, MI, USA
| | - P F Fogarty
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A Cuker
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - M E Mancuso
- Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - P A Holme
- Department of Hematology and Institute of Clinical Medicine, University Hospital, University of Oslo, Oslo, Norway
| | - J Grabell
- Queen's University, Kingston, ON, Canada
| | - N Satkunam
- Queen's University, Kingston, ON, Canada
| | - W M Hopman
- Queen's University, Kingston, ON, Canada
| | - P Mathew
- Bayer Health Care, Whippany, NJ, USA.,University of New Mexico, Albuquerque, NM, USA
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Michels A, Albánez S, Mewburn J, Nesbitt K, Gould TJ, Liaw PC, James PD, Swystun LL, Lillicrap D. Histones link inflammation and thrombosis through the induction of Weibel-Palade body exocytosis. J Thromb Haemost 2016; 14:2274-2286. [PMID: 27589692 DOI: 10.1111/jth.13493] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 08/15/2016] [Indexed: 11/27/2022]
Abstract
Essentials Dysregulated DNA and histone release can promote pathological immunothrombosis. Weibel-Palade bodies (WPBs) are sentinel-like organelles that respond to proinflammatory stimuli. Histones induce WPB exocytosis in a caspase, calcium and charge-dependent mechanism. A targetable axis may exist between DNA/histones and WPBs in inflammation and immunothrombosis. SUMMARY Background Damage-associated molecular patterns (DAMPs), including molecules such as DNA and histones, are released into the blood following cell death. DAMPs promote a procoagulant phenotype through enhancement of thrombin generation and platelet activation, thereby contributing to immunothrombosis. Weibel-Palade bodies (WPBs) are dynamic endothelial cell organelles that contain procoagulant and proinflammatory mediators, such as von Willebrand factor (VWF), and are released in response to cell stresses. VWF mediates platelet adhesion and aggregation, and has been implicated as a procoagulant component of the innate immune response. Objective To determine the influence of histones and DNA on WPB release, and characterize their association in models of inflammation. Methods We treated C57BL/6J mice and cultured endothelial cells with histones (unfractionated, lysine-rich or arginine-rich) and DNA, and measured WPB exocytosis. We used inhibitors to determine a mechanism of histone-induced WPB release in vitro. We characterized the release of DAMPs and WPBs in response to acute and chronic inflammation in human and murine models. Results and conclusions Histones, but not DNA, induced the release of VWF (1.46-fold) from WBPs and caused thrombocytopenia (0.74-fold), which impaired arterial thrombus formation in mice. Histones induced WPB release from endothelial cells in a caspase-dependent, calcium-dependent and charge-dependent manner, and promoted platelet capture in a flow chamber model of VWF-platelet string formation. The levels of DAMPs and WPB-released proteins were elevated during inflammation, and were positively correlated in chronic inflammation. These studies showed that DAMPs can regulate the function and level of VWF by inducing its release from endothelial WPBs. This DAMP-WPB axis may propagate immunothrombosis associated with inflammation.
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Affiliation(s)
- A Michels
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - S Albánez
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - J Mewburn
- Cancer Research Institute, Queen's University, Kingston, Ontario, Canada
| | - K Nesbitt
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - T J Gould
- Department of Medical Sciences, Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - P C Liaw
- Department of Medicine, Thrombosis and Atherosclerosis Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - P D James
- Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - L L Swystun
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - D Lillicrap
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
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James PD, Antonova L, Martel M, Barkun A. Measures of trainee performance in advanced endoscopy: A systematic review. Best Pract Res Clin Gastroenterol 2016; 30:421-52. [PMID: 27345650 DOI: 10.1016/j.bpg.2016.05.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 04/11/2016] [Revised: 04/22/2016] [Accepted: 05/08/2016] [Indexed: 01/31/2023]
Abstract
INTRODUCTION The diversity, technical skills required, and risk inherent to advanced endoscopy techniques all contribute to complex training curricula and steep learning curves. Since trainees develop endoscopy skills at different rates, there has been a shift towards competency-based training and certification. Validated endoscopy performance measures for trainees are, therefore, necessary. The aim of this systematic review was to describe and critically assess the existing evidence regarding measures of performance for trainees in advanced endoscopy. METHODS A systematic review of the literature from January 1980 to January 2016 was carried out using the MEDLINE, EMBASE, CENTRAL, and ISI Web of knowledge databases. MeSH terms related to 'advanced endoscopy' and 'performance' were applied to a highly sensitive search strategy. The main outcomes were face, content, and construct validity, as well as reliability. RESULTS The literature search yielded 1,662 studies and 77 met the inclusion criteria after abstract and full-text review (endoscopic retrograde cholangiopancreatography (ERCP)=23, endoscopic ultrasound (EUS)=30, colonoscopic polypectomy (CP)=11, balloon-assisted enteroscopy (BAE)=7, luminal stenting=3, radiofrequency ablation (RFA)=2, and endoscopic muscosal resection (EMR)=1). Good validity and reliability were found for measurement tools of overall performance in ERCP, EUS and CP, with applications for both patient-based and simulator training models. A number of specific technical skills were also shown to be valid measures of performance. These include: selective biliary cannulation, sphincterotomy, biliary stent placement, stone extraction and procedure time for ERCP; pancreatic solid mass T-staging, EUS-guided fine needle aspiration (EUS-FNA) procedure time, number of EUS-FNA passes and puncture precision for EUS; procedure time and en bloc resection rate for CP; retrograde fluoroscopy time for BAE; and mean number of endoscopy sessions required to achieve complete eradication of intestinal metaplasia (CIEM) for RFA. The evidence for EMR and luminal stenting is of insufficient quality to make recommendations. CONCLUSIONS We have identified multiple valid and readily available performance measures for advanced endoscopy trainees for ERCP, EUS, CP, BAE and RFA procedures. These tools should be considered in advanced endoscopy training programs wishing to move away from apprenticeship-based training and towards competency-based learning with the help of patient-based and simulator tools.
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Affiliation(s)
- P D James
- Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Ottawa, Ontario, Canada.
| | - L Antonova
- Department of Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada; Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - M Martel
- Division of Gastroenterology, McGill University Health Center, McGill University, Montreal, Quebec, Canada
| | - A Barkun
- Division of Gastroenterology, McGill University Health Center, McGill University, Montreal, Quebec, Canada; Epidemiology and Biostatistics and Occupational Health, McGill University Health Center, McGill University, Montreal, Quebec, Canada
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Deforest M, Grabell J, Albert S, Young J, Tuttle A, Hopman WM, James PD. Generation and optimization of the self-administered bleeding assessment tool and its validation as a screening test for von Willebrand disease. Haemophilia 2015; 21:e384-8. [PMID: 26179127 DOI: 10.1111/hae.12747] [Citation(s) in RCA: 54] [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] [Subscribe] [Scholar Register] [Accepted: 05/11/2015] [Indexed: 11/29/2022]
Abstract
INTRODUCTION/AIM Our aim was to generate, optimize and validate a self-administered bleeding assessment tool (self-BAT) for von Willebrand disease (VWD). METHODS In Phase 1, medical terminology in the expert-administered International Society on Thrombosis and Haemostasis (ISTH)-BAT was converted into a Grade 4 reading level to produce the first version of the Self-BAT which was then optimized to ensure agreement with the ISTH-BAT. In Phase 2, the normal range of bleeding scores (BSs) was determined and test-retest reliability analysed. In Phase 3, the optimized Self-BAT was tested as a screening tool for first time referrals to the Haematology clinic. RESULTS Bleeding score from the final optimized version of the Self-BAT showed an excellent intra-class correlation coefficient (ICC) of 0.87 with ISTH-BAT BS in Phase 1. In Phase 2, the normal range of BSs for the optimized Self-BAT was determined to be 0 to +5 for females and 0 to +3 for males and excellent test-retest reliability was shown (ICC = 0.95). In Phase 3, we showed that a positive Self-BAT BS (≥6 for females, ≥4 for males) has a sensitivity of 78%, specificity of 23%, positive predictive value (PPV) of 0.15 and negative predictive value (NPV) of 0.86 for VWD; these figures improved when just the females were analysed; sensitivity of 100%, specificity of 21%, PPV = 0.17 and NPV = 1.0. CONCLUSION We show an optimized Self-BAT can generate comparable BS to the expert-administered ISTH-BAT and is a reliable, effective screening tool to incorporate into the assessment of individuals, particularly women, referred for a possible bleeding disorder.
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Affiliation(s)
- M Deforest
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - J Grabell
- Department of Medicine, Queen's University, Kingston, ON, Canada
| | - S Albert
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - J Young
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - A Tuttle
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - W M Hopman
- Clinical Research Centre, Kingston General Hospital, Queen's University, Kingston, ON, Canada.,Department of Public Health Sciences, Queen's University, Kingston, ON, Canada
| | - P D James
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada.,Department of Medicine, Queen's University, Kingston, ON, Canada
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James PD, Tsolakis AV, Zhang M, Belletrutti PJ, Mohamed R, Roberts DJ, Heitman SJ. Incremental benefit of preoperative EUS for the detection of pancreatic neuroendocrine tumors: a meta-analysis. Gastrointest Endosc 2015; 81:848-56.e1. [PMID: 25805462 DOI: 10.1016/j.gie.2014.12.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [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: 09/14/2014] [Accepted: 12/01/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Current guidelines recommend CT scan or magnetic resonance imaging as the initial imaging modalities for the work-up of suspected pancreatic neuroendocrine tumors (PNETs). OBJECTIVE To determine the incremental benefit of preoperative EUS (IBEUS) for the detection of suspected PNETs after other investigative modalities have been attempted. DESIGN This systematic review searched MEDLINE, EMBASE, bibliographies of included articles, and conference proceedings for studies reporting original data regarding the preoperative detection of PNETs. Pooled IBEUS was calculated by using random effects models. Heterogeneity was explored by using stratified meta-analysis and meta-regression. Evidence of small-study effects was assessed by using funnel plots and the Begg test. PATIENTS Patients with suspected PNETs. INTERVENTIONS EUS evaluation. MAIN OUTCOME MEASUREMENTS The pooled IBEUS for the detection of PNETs after CT scan, with or without additional investigative modalities. RESULTS Among 4505 citations identified, we included 17 cohort studies (612 patients). EUS identified PNETs in 97% of cases. Improved PNET identification with EUS was observed in all of the studies. After adjusting for small-study effects, meta-analysis showed that EUS alone could identify PNETs in approximately 1 in 4 patients (adjusted IBEUS 26%; 95% confidence interval, 17%-37%). The pooled IBEUS varied based on the study design, study size, type of CT scan used, and the number of modalities used prior to EUS. LIMITATIONS The majority of included studies were retrospective. Small-study effects were observed. CONCLUSION Preoperative EUS is associated with an increase in PNET detection after other modalities are attempted.
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Affiliation(s)
- Paul D James
- Department of Medicine and the Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada; Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Apostolos V Tsolakis
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; Department of Medical Sciences, Section of Endocrine Oncology, Uppsala University, Uppsala, Sweden
| | - Mei Zhang
- Department of Medical Sciences, Section of Endocrine Oncology, Uppsala University, Uppsala, Sweden
| | - Paul J Belletrutti
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Rachid Mohamed
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Derek J Roberts
- Department of Surgery and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Steven J Heitman
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
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Rydz N, Grabell J, Lillicrap D, James PD. Changes in von Willebrand factor level and von Willebrand activity with age in type 1 von Willebrand disease. Haemophilia 2015; 21:636-41. [PMID: 25756206 DOI: 10.1111/hae.12664] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2015] [Indexed: 11/30/2022]
Abstract
UNLABELLED In a normal population, VWF plasma levels (VWF:Ag) and VWF activity (VWF:RCo) increase by approximately 0.17 and 0.15 IU mL(-1) per decade, but the influence of age is unknown in patients with type 1 von Willebrand disease (VWD). In a retrospective cohort study, the medical records of 31 type 1 VWD patients over the age of 30, who had been followed for ≥5 years, were reviewed for baseline clinical data and previously performed VWF:Ag, VWF:RCo and factor VIII levels ( FVIII C). VWF multimer analysis was normal in 28/31 cases performed. Mean age at diagnosis was 33 (range 16-60 years), and duration of follow-up ranged from 5 to 26 years (mean 11 years). Patients had 2-10 time points of VWD testing (mean of 5.2). The mean VWF:Ag, VWF:RCo and FVIII C at time of diagnosis were 0.44 IU mL(-1) 0.34 IU mL(-1) and 0.75 IU mL(-1) . At last follow-up, the mean VWF:Ag, VWF:RCo and FVIII C were significantly increased to 0.71 IU L(-1) , 0.56 IU mL(-1) and 0.90 IU mL(-1) (P ≤ 0.001, <0.001, and 0.0081 respectively). Here 18/31 patients had VWF:Ag, VWF:RCo and FVIII C levels that increased into the normal range. The rate of change in VWF:Ag, VWF:RCo and FVIII was 0.30 IU mL(-1) (0.21-0.39, CI 95%, P < 0.0001), 0.20 IU mL(-1) per decade (0.13-0.27, CI 95%, P = 0.0001) and 0.20 IU mL(-1) (0.11-0.29, CI 95%, P = 0.0011). Patients with type 1 VWD experience age-related increases to VWF:Ag and VWF:RCo which can result in normalization of VWF levels. Further studies are required to determine if the bleeding phenotype resolves with the increases in VWF:Ag and VWF:RCo levels.
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Affiliation(s)
- N Rydz
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - J Grabell
- Department of Medicine, Queen's University, Kingston, ON, Canada
| | - D Lillicrap
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, Canada
| | - P D James
- Department of Medicine, Queen's University, Kingston, ON, Canada
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Elbatarny M, Mollah S, Grabell J, Bae S, Deforest M, Tuttle A, Hopman W, Clark DS, Mauer AC, Bowman M, Riddel J, Christopherson PA, Montgomery RR, Rand ML, Coller B, James PD. Normal range of bleeding scores for the ISTH-BAT: adult and pediatric data from the merging project. Haemophilia 2014; 20:831-5. [PMID: 25196510 DOI: 10.1111/hae.12503] [Citation(s) in RCA: 191] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/18/2014] [Indexed: 10/24/2022]
Abstract
Bleeding Assessment Tools (BATs) have been developed to aid in the standardized evaluation of bleeding symptoms. The Vicenza Bleeding Questionnaire (BQ), published in 2005, established a common framework and scoring key that has undergone subsequent modification over the years, culminating in the publication of the ISTH-BAT in 2010. Understanding the normal range of bleeding scores is critical when assessing the utility of a BAT. Within the context of The Merging Project, a bioinformatics system was created to facilitate the merging of legacy data derived from four different (but all Vicenza-based) BATs; the MCMDM1-VWD BQ, the Condensed MCMDM-1VWD BQ, the Pediatric Bleeding Questionnaire and the ISTH-BAT. Data from 1040 normal adults and 328 children were included in the final analysis, which showed that the normal range is 0-3 for adult males, 0-5 for adult females and 0-2 in children for both males and females. Therefore, the cut-off for a positive or abnormal BS is ≥4 in adult males, ≥6 in adult females and ≥3 in children. This information can now be used to objectively assess bleeding symptoms as normal or abnormal in future studies.
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Affiliation(s)
- M Elbatarny
- Department of Medicine, Queen's University, Kingston, Canada
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James PD, Kaplan GG, Myers RP, Hubbard J, Shaheen AA, Tinmouth J, Yong E, Love J, Heitman SJ. Decreasing mortality from acute biliary diseases that require endoscopic retrograde cholangiopancreatography: a nationwide cohort study. Clin Gastroenterol Hepatol 2014; 12:1151-1159.e6. [PMID: 24095977 DOI: 10.1016/j.cgh.2013.09.054] [Citation(s) in RCA: 30] [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: 04/24/2013] [Revised: 09/15/2013] [Accepted: 09/19/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS The management of acute biliary diseases often involves endoscopic retrograde cholangiopancreatography (ERCP), but it is not clear whether this technique reduces mortality. We investigated whether mortality from acute biliary diseases that require ERCP has been reduced over time and explored factors associated with mortality. METHODS We conducted a cohort study using the Nationwide Inpatient Sample (1998-2008). We identified hospitalizations for choledocholithiasis, cholangitis, and acute pancreatitis that involved ERCP. Multivariate analyses were used to determine the effects of time period, patient factors, hospital characteristics, features of the ERCP procedure, and types of cholecystectomies on mortality, length of stay, and costs. RESULTS From 1998 to 2008 there were 166,438 admissions for acute biliary conditions that met the inclusion criteria, corresponding to more than 800,000 patients nationwide. During this interval, mortality decreased from 1.1% to 0.6% (adjusted odds ratio [aOR], 0.7; 95% confidence interval [CI], 0.6-0.8), diagnostic ERCPs decreased from 28.8% to 10.0%, hospitals performing fewer than 100 ERCPs per year decreased from 38.4% to 26.9%, open cholecystectomies decreased from 12.4% to 5.8%, and unsuccessful ERCPs decreased from 6.3% to 3.2% (P < .0001 for all trends). Unsuccessful ERCP (aOR, 1.7; 95% CI, 1.4-2.2), open cholecystectomy (aOR, 3.4; 95% CI 2.7-4.3), cholangitis (aOR, 1.9; 95% CI, 1.5-2.3), older age, having Medicare health insurance, and comorbidity were associated with increased mortality. CONCLUSIONS In-hospital mortality from acute biliary conditions requiring ERCP in the United States has decreased over time. Reductions in the rate of unsuccessful ERCPs and open cholecystectomies are associated with this trend.
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Affiliation(s)
- Paul D James
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Calgary Research and Education in Advanced Therapeutic Endoscopy, Calgary, Alberta, Canada
| | - Gilaad G Kaplan
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Robert P Myers
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - James Hubbard
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Abdel Aziz Shaheen
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Jill Tinmouth
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Elaine Yong
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Jonathan Love
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; Calgary Research and Education in Advanced Therapeutic Endoscopy, Calgary, Alberta, Canada
| | - Steven J Heitman
- Department of Medicine and Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; Calgary Research and Education in Advanced Therapeutic Endoscopy, Calgary, Alberta, Canada.
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Abstract
Since the cloning of the gene that encodes von Willebrand factor (VWF), 27 years ago, significant progress has been made in our understanding of the molecular basis of the most common inherited bleeding disorder, von Willebrand disease (VWD). The molecular pathology of this condition represents a range of genetic mechanisms, some of which are now very well characterized, and others that are still under investigation. In general, our knowledge of the molecular basis of type 2 and 3 VWD is now well advanced, and in some instances this information is being used to enhance clinical management. In contrast, our understanding of the molecular pathogenesis of the most common form of VWD, type 1 disease, is still at an early stage, with preliminary evidence that this phenotype involves a complex interplay between environmental factors and the influence of genetic variability both within and outside of the VWF locus.
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Affiliation(s)
- P D James
- Department of Medicine, Etherington Hall, Queen's University, Kingston, ON, Canada
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Robertson JD, Yenson PR, Rand ML, Blanchette VS, Carcao MD, Notley C, Lillicrap D, James PD. Expanded phenotype-genotype correlations in a pediatric population with type 1 von Willebrand disease. J Thromb Haemost 2011; 9:1752-60. [PMID: 21711445 DOI: 10.1111/j.1538-7836.2011.04423.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [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: 11/27/2022]
Abstract
BACKGROUND Recent phenotype-genotype studies have provided valuable insights into the pathophysiology of type 1 von Willebrand disease (VWD); however, no study has examined an exclusively pediatric cohort. OBJECTIVES To describe phenotype-genotype correlations in a selected pediatric cohort with a historical diagnosis of type 1 VWD, using first-degree family members as controls. METHODS Comprehensive phenotypic assessment included standard assays of von Willebrand factor (VWF) level and function, bleeding score, desmopressin response, VWF propeptide (VWFpp) level, and platelet-derived VWF mRNA level. RESULTS Fourteen VWF mutations were identified in 17 of 23 index cases (ICs) (aged 5-17 years), including four that were previously unreported (L60P, nt1658 insT, Q1388X, and C2237F). VWFpp levels were lower in ICs than in unaffected controls (median 49 vs. 86 U dL(-1) , P < 0.0001). A VWFpp/VWF antigen ratio of > 1.6 was observed in eight of nine ICs with a suboptimal response to desmopressin, including four of four with the R1205H (Vicenza) mutation (median 7.9), and three of four IC with the R1315C mutation (median 1.9). The R1315C mutation was also associated with a reduced absolute VWFpp level (median 32 U dL(-1) ), a previously unreported finding. The amount of platelet-derived VWF mRNA was significantly reduced in individuals with nonsense mutations. CONCLUSIONS Increased VWF clearance and intracellular retention are important mechanisms underlying type 1 VWD in pediatric patients, concordant with the observations of larger, predominantly adult, cohort studies. Additionally, in some patients, nonsense-mediated decay of mutant mRNA transcripts may be contributory. Several mechanisms underlie the variable phenotype associated with the R1315C mutation. The potential utility of VWFpp as an independent marker of VWF biosynthesis and release warrants further research.
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Affiliation(s)
- J D Robertson
- Haematology Service, Division of Oncology, Royal Children's Hospital Department of Haematology, Pathology Queensland, Brisbane, QLD, Australia.
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Biss TT, Blanchette VS, Clark DS, Wakefield CD, James PD, Rand ML. Use of a quantitative pediatric bleeding questionnaire to assess mucocutaneous bleeding symptoms in children with a platelet function disorder. J Thromb Haemost 2010; 8:1416-9. [PMID: 20236392 DOI: 10.1111/j.1538-7836.2010.03846.x] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Du Mont J, James PD, Forte T, Cohen MM. Factors associated with child witnessing of intimate partner violence in Canada. Med Law 2010; 29:275-288. [PMID: 22462290] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Knowing the characteristics associated with child exposure to spousal abuse could aid in early identification of at-risk children. The purpose of our study is to determine possible factors associated with child witnessing of intimate partner violence (IPV) in Canada using data from the 1999 General Social Survey, a representative telephone survey of Canadians aged 15 years and older. Respondents reporting IPV in the five years prior to the survey were asked whether a child had witnessed the incident. Multivariate logistic regression was used to determine the association between child witnessing of IPV and victim, assault, and help-seeking characteristics. Households in which child witnessing of IPV was reported were distinguished by the following factors: female respondent, visible minority, over age 30, separated, divorced, or widowed, low income, and the presence of children aged 0-14 years. Other significant variables associated with child witnessing of IPV were related to the frequency, reporting, and disclosure of violent incidents.
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Affiliation(s)
- Janice Du Mont
- Women's College Research Institute, Women's College Hospital, Toronto, Canada
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Biss TT, Blanchette VS, Clark DS, Bowman M, Wakefield CD, Silva M, Lillicrap D, James PD, Rand ML. Quantitation of bleeding symptoms in children with von Willebrand disease: use of a standardized pediatric bleeding questionnaire. J Thromb Haemost 2010; 8:950-6. [PMID: 20136710 DOI: 10.1111/j.1538-7836.2010.03796.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [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: 11/28/2022]
Abstract
SUMMARY BACKGROUND Excessive bruising and mucocutaneous bleeding are frequent presenting symptoms in childhood. A detailed bleeding history can distinguish children who may have an inherited bleeding disorder from those who are normal. There is a lack of standardization of such history taking in pediatric practise. OBJECTIVES To assess the performance of a Pediatric Bleeding Questionnaire (PBQ), an adaptation of a standardized adult bleeding questionnaire and score that includes pediatric-specific bleeding symptoms, in a cohort of children with von Willebrand disease (VWD). PATIENTS/METHODS Bleeding scores were determined by interview, for children with a previous diagnosis of VWD and a control group of unaffected siblings. RESULTS Bleeding scores were obtained for 100 children with VWD, median age 10.9 years (range, 0.8-17.8 years), and 21 unaffected siblings. Median bleeding score in children with VWD was 7.0 (range, 0-29) and in the control group was 0 (range, -1-2). Bleeding score varied within and between each VWD type: definite type 1, n = 40, median, 9.0 (range, 2-18); possible type 1, n = 38, median, 2.0 (0-15); type 2, n = 6, median, 14.0 (3-17); and type 3, n = 16, median, 12.0 (4-29). Bleeding scores in affected children correlated with age (Spearman's correlation coefficient, 0.35; P = 0.0004). The most frequent clinically significant bleeding symptoms were surgical bleeding, bleeding after tooth extraction and menorrhagia. Post-circumcision bleeding, cephalohematoma, macroscopic hematuria and umbilical stump bleeding were clinically significant in 32% (of circumcised males), 4%, 4% and 3% of children, respectively. CONCLUSIONS The PBQ provides a standardized quantitation of bleeding severity in children with VWD.
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Affiliation(s)
- T T Biss
- Division of Haematology/Oncology, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
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Affiliation(s)
- Paul D James
- Department of Internal Medicine, Faculty of Medicine, University of Toronto, Toronto, Ontario.
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Abstract
BACKGROUND Type 1 VWD is associated with mutational heterogeneity in the VWF gene. The R924Q substitution was the second most frequent sequence variation in the Canadian type 1 VWD study and this variant was also documented in other type 1 VWD studies. In this study, R924Q was detected in a compound heterozygote possessing both type 2N and 924Q substitutions whose VWF:FVIIIB and FVIII levels were disproportionately low for the heterozygous type 2N state. AIM To determine the role of R924Q variation in the pathogenesis of type 1 VWD. METHODS The frequency of the R924Q variant in the normal and type 1 VWD populations was ascertained, along with the associated polymorphic VWF haplotype. The effect of the R924Q substitution on the biosynthesis and intracellular trafficking of VWF was explored by in vitro expression studies in COS-7 and AtT-20 cells. Immunofluorescent staining of VWF was performed in transfected AtT-20 cells and BOECs from the patient. RNA analysis was performed to investigate an RNA processing defect in the patient. RESULTS AND CONCLUSIONS In vitro expression studies demonstrated that the R924Q variation does not affect biosynthesis, intracellular trafficking and storage significantly. Storage of VWF in the patient's endothelial cells was abnormal. Analysis of the patient's VWF mRNA revealed a novel truncated transcript resulting from the activation of a cryptic splice site in exon 28. The presence of a common VWF haplotype in heterozygotes for 924Q with low VWF levels suggests a founder origin for this variant allele that may mark this splicing defect.
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Affiliation(s)
- E Berber
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON, K7L 3N6 Canada
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Bowman M, Riddel J, Rand ML, Tosetto A, Silva M, James PD. Evaluation of the diagnostic utility for von Willebrand disease of a pediatric bleeding questionnaire. J Thromb Haemost 2009; 7:1418-21. [PMID: 19496919 DOI: 10.1111/j.1538-7836.2009.03499.x] [Citation(s) in RCA: 130] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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