58 results match your criteria: "William Osler Health Centre.[Affiliation]"

Article Synopsis
  • - This study explores how DNA methylation can indicate biological age, particularly focusing on critically ill patients with sepsis and those without, to see if a greater biological age affects health outcomes such as survival.
  • - Researchers analyzed blood samples from patients in Canadian hospitals, using algorithms to calculate epigenetic age compared to chronological age, finding that septic patients had an average acceleration of nearly 5 years.
  • - Results showed that patients who did not survive had a significantly higher epigenetic age, indicating a link between age acceleration and both sepsis diagnosis and mortality risk, especially using the PhenoAge algorithm.
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Sotrovimab is an engineered human monoclonal antibody that binds a conserved region of the SARS-CoV-2 spike protein. The COMET-ICE phase III study evaluated sotrovimab for treatment of mild to moderate COVID-19 in nonhospitalized participants with ≥1 risk factor for severe disease progression. We evaluated the presence of circulating SARS-CoV-2 variants of concern or interest (VOCs/VOIs) and characterized the presence of baseline, post-baseline and emergent amino acid substitutions detected in the epitope of sotrovimab in SARS-CoV-2.

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Background: The COMET-ICE trial demonstrated that sotrovimab clinically and statistically significantly reduces the risk of all-cause > 24-h hospitalization or death due to any cause among patients with COVID-19 at high risk of disease progression. Patient-reported outcomes are important to capture symptom burden of COVID-19 and assess treatment effectiveness. This study investigated symptoms and their impact over the acute phase of COVID-19 infection among patients on sotrovimab versus placebo.

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Background: Our research consortium is preparing for a prospective multicenter trial evaluating the impact of teleneonatology on the health outcomes of at-risk neonates born in community hospitals. We completed a 6-month pilot study to determine the feasibility of the trial protocol.

Methods: Four neonatal intensive care units ("hubs") and four community hospitals ("spokes") participated in the pilot-forming four hub-spoke dyads.

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Antibody therapy reverses biological signatures of COVID-19 progression.

Cell Rep Med

August 2022

Vir Biotechnology, San Francisco, CA, USA. Electronic address:

Article Synopsis
  • - Understanding who might experience severe COVID-19 is crucial for effective treatment decisions in clinical settings, as demonstrated in the COMET-ICE clinical trial which tested the monoclonal antibody sotrovimab against a placebo.
  • - Key laboratory indicators of severe disease risk include a high neutrophil-to-lymphocyte ratio (NLR), low SARS-CoV-2 antibodies, and specific whole-blood gene expression profiles, with the latter being particularly predictive of hospitalization or death.
  • - Treatment with sotrovimab not only stabilizes these risk factors like NLR but also reduces viral levels in the body, and a newly identified 10-gene signature can help quickly assess patients at risk for severe outcomes.
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Examining the Relationship Between Diabetic Macular Edema, and Obstructive Sleep Apnea.

Clin Ophthalmol

April 2022

Department of Ophthalmology & Vision Sciences, University of Toronto, Toronto, Ontario, Canada.

Purpose: This prospective cohort study examined the relationship between diabetic macular edema (DME), diabetic retinopathy (DR) and obstructive sleep apnea (OSA) in patients after 1 year of treatment with anti-VEGF injection and/or continuous positive airway pressure (CPAP).

Patients And Methods: The study included adults with type 1 or 2 diabetes mellitus with diabetic retinopathy. Polysomnography metrics were measured at baseline.

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(1) Background: The COVID-19 pandemic illuminated vulnerabilities in the Canadian health care system and exposed gaps and challenges across the cancer care continuum. Canada is experiencing significant disruptions to cancer-related services, and the impact these disruptions (delays/deferrals/cancellations) have on the health care system and patients are yet to be determined. Given the potential adverse ramifications, how can Canada's health care systems build resilience for future threats? (2) Methods: To answer this question, CCC facilitated a series of four thought-leadership roundtables, each representing the views of four different stakeholder groups: patients, physicians, health care system leaders, and researchers.

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Importance: Older patients and those with comorbidities who are infected with SARS-CoV-2 may be at increased risk of hospitalization and death. Sotrovimab is a neutralizing antibody for the treatment of high-risk patients to prevent COVID-19 progression.

Objective: To evaluate the efficacy and adverse events of sotrovimab in preventing progression of mild to moderate COVID-19 to severe disease.

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Early Treatment for Covid-19 with SARS-CoV-2 Neutralizing Antibody Sotrovimab.

N Engl J Med

November 2021

From the Albion Finch Medical Centre, William Osler Health Centre, Toronto (A.G.); Optimus U (Y.G.-R.) and Florida International Medical Research (E.J.), Miami, Pines Care Research Center, Pembroke Pines (J.M.), and Sarkis Clinical Trials, Gainesville (E.S.) - all in Florida; Álvaro Cunqueiro Hospital, IIS Galicia Sur, Vigo, Spain (M.C.C.); Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil (D.R.F.); Centex Studies, McAllen (J. Solis), and Central Texas Clinical Research, Austin (C.B.) - both in Texas; Vir Biotechnology, San Francisco (H.Z., A.L.C., C.M.H., J. Sager, E.M., E.A., P.S.P., M.A.); GlaxoSmithKline, Stevenage, United Kingdom (N.S., C.T.); GlaxoSmithKline, Cambridge, MA (A.P.); Pinnacle Research Group, Anniston, AL (A.F.); and the Departments of Global Health and Medicine, University of Washington, and Fred Hutchinson Cancer Research Center, Seattle (A.E.S.).

Background: Coronavirus disease 2019 (Covid-19) disproportionately results in hospitalization or death in older patients and those with underlying conditions. Sotrovimab is a pan-sarbecovirus monoclonal antibody that was designed to prevent progression of Covid-19 in high-risk patients early in the course of disease.

Methods: In this ongoing, multicenter, double-blind, phase 3 trial, we randomly assigned, in a 1:1 ratio, nonhospitalized patients with symptomatic Covid-19 (≤5 days after the onset of symptoms) and at least one risk factor for disease progression to receive a single infusion of sotrovimab at a dose of 500 mg or placebo.

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Unlabelled: Lower urinary tract symptoms with constipation characterize bladder and bowel dysfunction (BBD). Due to high referral volumes to hospital pediatric urology clinics and time-consuming appointments, wait times are prolonged. Initial management consists of behavioral modification strategies that could be accomplished by community pediatricians.

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Background And Aim: Elderly patients with hepatitis C virus (HCV) infection have worse interferon-based treatment outcomes than young patients. Direct-acting antiviral (DAA) regimens have enabled the treatment of previously difficult-to-cure populations. There are few studies that specifically assess DAA treatment outcomes in patients over 75 years of age.

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Purpose: To report a case of neovascularization of posterior capsule (NVPC) successfully treated with intravitreal ranibizumab (Lucentis) and neodymium:YAG (Nd:YAG) capsulotomy, followed by phacogenic uveitis.

Observations: We report a systemically otherwise healthy 81-year-old male presenting with unilateral NVPC and iris (NVI) occurring five years after a central retinal vein occlusion. A single intravitreal injection of ranibizumab led to complete regression of NVPC and NVI within three weeks after which a Nd:YAG capsulotomy was performed.

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Deep learning-based computer vision methods have recently made remarkable breakthroughs in the analysis and classification of cancer pathology images. However, there has been relatively little investigation of the utility of deep neural networks to synthesize medical images. In this study, we evaluated the efficacy of generative adversarial networks to synthesize high-resolution pathology images of 10 histological types of cancer, including five cancer types from The Cancer Genome Atlas and the five major histological subtypes of ovarian carcinoma.

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Background: Small randomized trials demonstrated that a lower compared with higher dialysate temperature reduced the average drop in intradialytic blood pressure. Some observational studies demonstrated that a lower compared with higher dialysate temperature was associated with a lower risk of all-cause mortality and cardiovascular mortality. There is now the need for a large randomized trial that compares the effect of a low vs high dialysate temperature on major cardiovascular outcomes.

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Surfactant for pulmonary haemorrhage in neonates.

Cochrane Database Syst Rev

February 2020

University of Toronto, Departments of Paediatrics, Obstetrics and Gynaecology and Institute of Health Policy, Management and Evaluation, Toronto, Canada.

Background: In the 1960s and 1970s, pulmonary haemorrhage (PH) occurred mainly in full-term infants with pre-existing illness with an incidence of 1.3 per 1000 live births. Risk factors for PH included severity of illness, intrauterine growth restriction, patent ductus arteriosus (PDA), coagulopathy and the need for assisted ventilation.

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Bevacizumab as adjuvant treatment of colon cancer: updated results from the S-AVANT phase III study by the GERCOR Group.

Ann Oncol

February 2020

Statistical Unit, ARCAD Foundation, Levallois-Perret, France; Department of Medical Oncology, Franco-British Institute, Levallois-Perret, France.

Background: The bevacizumab-Avastin® adjuVANT (AVANT) study did not meet its primary end point of improving disease-free survival (DFS) with the addition of bevacizumab to oxaliplatin-based chemotherapy in stage III colon cancer (CC). We report here the long-term survival results (S-AVANT).

Patients And Methods: Patients with curatively resected stage III CC were randomly assigned to FOLFOX4, FOLFOX4-bevacizumab, or XELOX-bevacizumab.

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A regional massive hemorrhage protocol developed through a modified Delphi technique.

CMAJ Open

September 2019

Departments of Laboratory Medicine and Molecular Diagnostics (Callum, Chin, Viveiros), Surgery (Nathens, Nascimento), Emergency Services (McDonald), Critical Care Medicine (Adhikari) and Anesthesia (Margarido), Sunnybrook Health Sciences Centre; Departments of Laboratory Medicine and Pathobiology (Callum, Pendergrast, Skeate, Pavenski), Anesthesia (McVey, Karkouti, Alam, Margarido), Surgery (Nathens, Nascimento, Rizoli) and Paediatrics (Beno), University of Toronto; Division of Emergency Medicine (Yeh, Petrosoniak, McDonald, MacDonald), Department of Medicine, University of Toronto; Departments of Emergency Medicine (Petrosoniak), Surgery (Rizoli) and Laboratory Medicine (Sholzberg, Pavenski), St. Michael's Hospital; Department of Anesthesia and Pain Medicine (McVey, Skelton), The Hospital for Sick Children; Ontario Regional Blood Coordinating Network (Cope, Thompson, Collins, Owens); Department of Anesthesia and Pain Management (Karkouti), Sinai Health System, University Health Network, and Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (Murto), Children's Hospital of Eastern Ontario; Department of Anesthesiology and Pain Medicine (Murto), University of Ottawa, Ottawa, Ont.; Paediatric Emergency Medicine (Beno), The Hospital for Sick Children; Department of Clinical Pathology (Pendergrast), University Health Network, Toronto, Ont.; Ornge Transport Medicine (McDonald, MacDonald), Mississauga, Ont.; Interdepartmental Division of Critical Care Medicine (Adhikari), University of Toronto; Department of Anesthesia (Alam, Arnold), North York General Hospital, Toronto, Ont.; McMaster Centre for Transfusion Research (Arnold, Pai, Zeller); Departments of Medicine (Pai, Zeller) and Pathology and Molecular Medicine (Pai), McMaster University, Hamilton, Ont.; Canadian Blood Services (Arnold, Skeate, White); St. Michael's Hospital (Barratt, Chaudhry, Harvey), Toronto, Ont.; Department of Surgery (Beckett), McGill University, Montréal, Que.; Canadian Forces Health Services (Beckett), Ottawa, Ont.; Sunnybrook Health Sciences Centre (Brenneman), Toronto, Ont.; General Surgery, Acute Care and Trauma (Lampron), The Ottawa Hospital; Departments of Surgery (Lampron), Medicine (Tinmouth) and Laboratory Medicine and Pathology (Tinmouth), Faculty of Medicine, University of Ottawa, Ottawa, Ont.; Trauma Program and Quality Assurance (McFarlan), St. Michael's Hospital, Toronto, Ont.; Departments of Pathology (Ruijs) and Surgery (Van Heest), William Osler Health Centre, Brampton, Ont.; Lakeridge Health Corporation (Syer), Oshawa, Ont.; Department of Critical Care (Theriault), Health Sciences North, Sudbury, Ont.; Division of Hematology (Tinmouth), The Ottawa Hospital; University of Ottawa Centre for Transfusion Research (Tinmouth), Ottawa Hospital Research Institute, Ottawa, Ont.; Canadian Blood Services (Zeller), Ancaster, Ont.

Background: A massive hemorrhage protocol (MHP) enables rapid delivery of blood components in a patient who is exsanguinating pending definitive hemorrhage control, but there is variability in MHP implementation rates, content and compliance owing to challenges presented by infrequent activation, variable team performance and patient acuity. The goal of this project was to identify the key evidence-based principles and quality indicators required to develop a standardized regional MHP.

Methods: A modified Delphi consensus technique was performed in the spring and summer of 2018.

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The regulatory loopholes governing alternative medicine products in Canada represent a public safety issue. In 2017 and 2018, the Liver Transplant Program of the University of British Columbia assessed three patients with acute liver failure secondary to alternative medicines. As health care professionals, we have a duty to both recognize the magnitude of the problem and advocate for reform of the current regulatory process for alternative medicine products.

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Background: Routine measurement of liver transaminases is common in the general monitoring of patients with non-alcoholic fatty liver disease (NAFLD), but there is little data to support the utility of this practice. The aims of this study were to determine how alanine aminotransferase (ALT) results vary over time in patients with NAFLD; and to determine if serial measurement of ALT is a useful clinical marker for progression of NAFLD.

Methods: Consecutive adult patients with NAFLD were followed prospectively in a tertiary liver disease clinic over a 15-year period.

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Apixaban to Prevent Venous Thromboembolism in Patients with Cancer.

N Engl J Med

February 2019

From the Department of Medicine, University of Ottawa, Ottawa Hospital Research Institute, Ottawa (M.C., R.M., G.G., G.L.G., D.S., T.R., M.R., D.W., P.S.W.), Centre Intégré de Santé et des Services Sociaux de l'Outaouais, Gatineau, QC (K.A.-N.), Jewish General Hospital, Lady Davis Institute for Medical Research, McGill University, Montreal (V.T.), Nova Scotia Health Authority, Halifax (S. Shivakumar), Lakeridge Health, Oshawa, ON (A.S.), William Osler Health Centre, Brampton, ON (P.K.), Sault Area Hospital, Sault Ste. Marie, ON (D.H., S. Spadafora), Hôpital Régional de Rimouski, Rimouski, QC (K.M.), Markham Stouffville Hospital, Markham, ON (M.T.), Kingston General Hospital, Kingston, ON (A.T.), University of British Columbia, British Columbia Cancer Agency, Vancouver (A.Y.Y.L.), Hamilton Health Sciences, Hamilton, ON (P.L.G.), London Health Sciences Centre, London, ON (A.L.-L.), and Royal Victoria Regional Health Centre, Barrie, ON (R.E.-M.) - all in Canada.

Background: Patients with active cancer have an increased risk of venous thromboembolism, which results in substantial morbidity, mortality, and health care expenditures. The Khorana score (range, 0 to 6, with higher scores indicating a higher risk of venous thromboembolism) has been validated to identify patients with cancer at elevated risk for this complication and may help select those who could benefit from thromboprophylaxis.

Methods: We conducted a randomized, placebo-controlled, double-blind clinical trial assessing the efficacy and safety of apixaban (2.

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Article Synopsis
  • Whole-genome sequencing (WGS) shows promise as a more efficient diagnostic tool in pediatric medicine compared to conventional genetic testing methods, which are often lengthy and costly.
  • In a study involving 103 patients with suspected genetic disorders, WGS identified diagnostic variants in 41% of cases, significantly higher than the 24% from traditional tests.
  • WGS not only captured all diagnoses made by conventional methods but also revealed 18 new diagnoses, including variants that traditional testing methods couldn't detect.
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Primary Care Screening and Comorbidity Management in Rheumatoid Arthritis in Ontario, Canada.

Arthritis Care Res (Hoboken)

October 2017

Institute for Clinical Evaluative Sciences, University of Toronto, Sunnybrook Health Sciences Centre, and University Health Network, Toronto, Ontario, Canada.

Objective: Quality measurement for rheumatoid arthritis (RA) patients has largely focused on care provided by rheumatologists. Our aim was to develop and assess quality measures related to the screening and management of comorbidity in RA patients in primary care.

Methods: We used the primary care Electronic Medical Record Administrative data Linked Database in Ontario, Canada.

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Colorectal Cancer Screening in Average Risk Populations: Evidence Summary.

Can J Gastroenterol Hepatol

March 2017

Department of Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.

Introduction. The objectives of this systematic review were to evaluate the evidence for different CRC screening tests and to determine the most appropriate ages of initiation and cessation for CRC screening and the most appropriate screening intervals for selected CRC screening tests in people at average risk for CRC. Methods.

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