Publications by authors named "Myriam Martel"

Given the necessity to demonstrate that occupational therapy services are a good use of resources, understanding the state of economic evidence is essential. This article presents a of this evidence. Relevant articles were identified using SCOPUS.

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  • Stent misdeployment (SMD) is a significant challenge in EUS-guided choledochoduodenostomy (EUS-CDS) for treating malignant distal biliary obstruction, with the study aiming to define its rate and outcomes, and propose a classification system.
  • In a review of data from two randomized controlled trials involving 152 patients, SMD was found in 7.2% of cases, with most types being misdeployments of the distal flange (type I) and a small number causing minor adverse events.
  • The analysis revealed that a smaller extrahepatic bile duct diameter (≤ 15 mm) increases the likelihood of SMD or technical failures, but most misdeployments can be successfully managed
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  • Inflammatory bowel diseases (IBD), like Crohn's disease and ulcerative colitis, negatively impact pregnancy outcomes, necessitating non-invasive monitoring techniques such as intestinal ultrasonography (IUS).
  • A systematic review of existing literature identified five relevant studies on IUS use in pregnant women with IBD, though the studies varied significantly in their definitions of disease activity and methodologies.
  • Overall, IUS exhibited good specificity (83-98%) in detecting IBD activity but had lower sensitivity (33-84%), with one study indicating it could effectively identify remission with an 80% sensitivity and 92% specificity.
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Introduction: The efficacy of topical hemostatic agents, recommended for peptic ulcer bleeding, remains poorly characterized in malignant gastrointestinal bleeding (GIB).

Methods: We performed an individual patient data meta-analysis assessing the efficacy of topical hemostatic agents in malignant GIB. The literature was searched using OVID MEDLINE, EMBASE, and ISI Web of Science databases (database inception to November 2023).

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Background: Cap-mounted-clips, especially Over-The-Scope-Clip (OTSC™), are recommended for recurrent nonvariceal upper gastrointestinal bleeding (NVUGIB). There has been recent interest in their use as an initial hemostatic modality. We performed a systematic review of randomized controlled trials (RCTs) assessing cap-mounted clips' efficacy as a primary hemostatic modality in NVUGIB.

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This narrative review summarizes the current body of literature regarding periprocedural management of direct oral anticoagulant (DOAC)-treated patients undergoing digestive endoscopy since the publication of the 2022 American College of Gastroenterology - Canadian Association of Gastroenterology guidelines. We provide a detailed analysis of the thromboembolic risk, endoscopic procedure-specific bleeding risks, contemporary intraprocedural techniques to reduce the bleeding risk, and a summary of periprocedural DOAC guidelines developed by major gastrointestinal societies, including recommendations on procedure risk stratification. Despite data heterogeneity, the overall trend of the current literature supports the contemporary practice of a minimal DOAC interruption without the need for heparin bridging.

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Introduction: Patients with cirrhosis awaiting liver transplantation (LT) are often frail, and malnourished. The period of time on the waitlist provides an opportunity to improve their physical fitness. Prehabilitation appears to improve the physical fitness of patients before major surgery.

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Objective: Proton pump inhibitors (PPIs) are widely prescribed with proven efficacy in many indications, yet longstanding controversy about potential adverse events persists. We aimed to acquire knowledge about perceptions of outpatient PPI long-term prescribing (≥8 wk) among primary and specialty care trainees at 2 Canadian Universities.

Methods: Family medicine, internal medicine, and gastroenterology trainees completed a web-based survey that included 20 clinical scenarios assessing trainee knowledge about PPI efficacy.

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  • Frailty, malnutrition, and sarcopenia significantly increase health risks for patients before and after liver transplantation (LT), leading researchers to explore the potential benefits of prehabilitation (exercise training) for these individuals.* -
  • The scoping review examined various studies (from 1946 to November 2023) focusing on the feasibility and safety of prehabilitation for LT candidates, ultimately including six heterogeneous studies with small sample sizes and varying outcomes.* -
  • Results indicated that prehabilitation is generally safe and feasible, with most studies reporting improvements in physical fitness metrics; however, further high-quality research is essential to better understand its impact on patients undergoing liver transplantation.*
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Background And Aims: Stent dysfunction is common after ERCP with self-expandable metal stent (SEMS) insertion for malignant distal biliary obstruction (MDBO). Chronic aspirin (acetylsalicylic acid; ASA) exposure has been previously shown to potentially decrease this risk. We aim to further ascertain the protective effect of ASA and to identify other predictors of stent dysfunction.

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Background: Several risk scores have attempted to risk stratify patients with acute upper gastrointestinal bleeding (UGIB) who are at a lower risk of requiring hospital-based interventions or negative outcomes including death. This systematic review and meta-analysis aimed to compare predictive abilities of pre-endoscopic scores in prognosticating the absence of adverse events in patients with UGIB.

Methods: We searched MEDLINE, EMBASE, Central, and ISI Web of knowledge from inception to February 2023.

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Malignant gastric outlet obstruction (MGOO) is traditionally treated with surgical gastrojejunostomy (SGJ), which is effective but associated with high rates of morbidity, or endoscopic stenting (ES), which is less invasive but associated with significant risk of stent dysfunction and need for reintervention. Endoscopic ultrasound-guided gastroenterostomy (EUS-GE) provides a robust bypass without the invasiveness of surgery. We performed a systematic review and meta-analysis comparing EUS-GE to SGJ and ES for MGOO.

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  • Patients with inflammatory bowel disease (IBD) have a higher risk of developing nonalcoholic fatty liver disease (NAFLD), but limited research exists on NAFLD's effects on IBD outcomes.* -
  • A systematic review analyzed studies to assess how NAFLD impacts IBD-related hospitalization, focusing on hospitalization rates, need for surgery, and other outcomes, but the studies found were few and varied.* -
  • The review indicated that NAFLD may lead to worse hospitalization outcomes for IBD patients, particularly those with Crohn's disease, signaling a need for more comprehensive and high-quality research.*
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  • EUS-CDS (endoscopic ultrasound-guided choledochoduodenostomy) was compared to ERCP-M (endoscopic retrograde cholangiopancreatography with metal stenting) for treating malignant distal biliary obstruction in a randomized controlled trial involving patients with specific cancer types.
  • The study found that EUS-CDS had a shorter procedure time and a high technical success rate (90.4%), comparable to ERCP-M (83.1%), with similar rates of stent dysfunction (9.6% vs 9.9%).
  • The results suggest that while EUS-CDS is not superior, it is a safe and efficient alternative to ERCP-M, advocating for its broader use in clinical settings.
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Introduction: Despite advances in the management of patients with upper gastrointestinal bleeding (UGIB), associated morbidity and mortality remain significant. Most patients, however, will experience favorable outcomes without a need for hospital-based interventions. Risk assessment scores may assist in such early risk-stratification.

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Background: Individuals hospitalized with severe ulcerative colitis represent a complex group of patients. Variation exists in the quality of care of admitted patients with inflammatory bowel disease. We hypothesized that implementation of a standardized admission order set could result in improved adherence to current best practice guidelines (Toronto Consensus Statements) for the management of this patient population.

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Novel topical hemostatic agents have shown promising results in treating patients with non-variceal upper gastrointestinal bleeding (NVUGIB). However, data are limited even in published meta-analyses as to their role, especially compared to conventional endoscopic approaches. The aim of this study was to perform a highly comprehensive systematic review assessing the effectiveness of topical hemostatic agents in UGIB in different clinical settings.

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BACKGROUND : We compared the effectiveness of optional split-dose bowel preparation (SDBP) with mandatory SDBP for morning colonoscopies in usual clinical practice. METHODS : Adult patients undergoing outpatient early morning (8:00 AM-10:30 PM) and late morning (10:30 AM-12:00 PM) colonoscopies were included. Written bowel preparation instructions were provided based on randomization: one group were instructed to take their bowel preparation (4 L polyethylene glycol solution) as a split dose (mandatory), while the comparator group was allowed the choice of SDBP or single-dose bowel preparation administered entirely on the day before (optional).

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Objective: The ABC risk score identifies patients at high risk of mortality in acute lower and upper gastrointestinal bleeding (UGIB). We aimed to externally validate the ABC score while comparing it to other prognostication scales when assessing UGIB patients at high risk of negative outcomes before endoscopy.

Methods: UGIB patients from a national Canadian registry (REASON) were studied, with mortality prediction as a primary outcome.

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Background And Objectives: EUS-guided biliary drainage (EUS-BD) is a promising alternative to ERCP in malignant distal biliary obstruction (MDBO). Despite accumulating data, however, its application in clinical practice has been impeded by undefined barriers. This study aims to evaluate the practice of EUS-BD and its barriers.

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Introduction: The periprocedural management of patients with atrial fibrillation (AF) using a direct oral anticoagulant (DOAC) undergoing elective gastrointestinal (GI) endoscopic procedure remains uncertain. We investigated the safety of a standardized periprocedural DOAC management strategy.

Methods: The Periprocedural Anticoagulation Use for Surgery Evaluation cohort study enrolled adult patients receiving a DOAC (apixaban, rivaroxaban, or dabigatran) for AF scheduled for an elective procedure or surgery.

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Introduction: We investigated sleep disturbances, bowel movement (BM) kinetics, and travel experience with different bowel preparation regimens in a substudy of patients enrolled in a randomized multicenter Canadian clinical trial.

Methods: Patients scheduled to have a colonoscopy between 7:30 am and 10:30 am (early morning) were randomized to (i) 4-L single-dose polyethylene glycol (PEG) given in the evening before, (ii) 2-L split-dose PEG (+bisacodyl 15 mg), or (iii) 4-L split-dose PEG. Patients scheduled to undergo a colonoscopy between 10:30 am and 4:30 pm (afternoon) were randomized to (iv) 2-L single-dose PEG (+bisacodyl 15 mg) in the morning, (v) 2-L split-dose PEG (+bisacodyl 15 mg), or (vi) 4-L split-dose PEG.

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Background: Obesity is a growing global public health problem. More than half the European and North American population is overweight or obese. Colon and rectum cancers are still the second leading cause of cancer death worldwide, and epidemiological data support an association between obesity and colorectal cancers (CRCs).

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Background And Aim: Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) is the standard of care in advanced pancreatic cancer. Its role in resectable disease, however, is controversial. This meta-analysis aims to ascertain the clinical outcomes of patients with resectable pancreatic cancer undergoing preoperative EUS-FNA compared to those going directly to surgery.

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Objectives: The effectiveness of the Doppler endoscopic probe (DEP) remains unclear in nonvariceal upper gastrointestinal bleeding (NVUGIB). We thus performed a systematic review characterizing the effectiveness of DEP in patients with NVUGIB addressing this question.

Methods: A literature search was done until July 2021 using MEDLINE, EMBASE, and ISI Web of Science.

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