245 results match your criteria: "and Boutis); and University of Toronto[Affiliation]"

Poly(ADP-ribose) polymerase inhibitors (PARPi) target the DNA repair pathways and have been established in epithelial ovarian cancer (EOC) as maintenance therapy inducing prolonged survival. However, recently published data showed that PARPi may increase the risk of therapy-related myeloid neoplasms (t-MN) including myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML). Herein, we investigated the incidence, characteristics, and management of t-MN among EOC patients after exposure to PARPi in a Greek Cancer Center.

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Rash Decisions: Improving Pediatrician Skills in Dermatologic Diagnosis.

J Pediatr

January 2025

Division of Pediatric Emergency Medicine, Department of Pediatrics, Hospital for Sick Children and University of Toronto, Toronto, ON, Canada. Electronic address:

Objective: To examine pediatrician diagnostic skill development of dermatology image-based cases via a web-based tool and to determine case-level variables that were associated with diagnostic error.

Study Design: This was a multicenter, prospective, cross-sectional study. A convenience sample of pediatric trainees and attendees were eligible for participation.

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Article Synopsis
  • Pediatric pneumonia diagnoses are tricky due to overlapping symptoms with other respiratory issues, subjective radiograph interpretations, and non-diagnostic lab results.
  • The study analyzed children aged 3 months to 16 years in Canadian EDs before COVID-19, focusing on how accurately physicians could classify pneumonia types using an expert panel for consensus diagnosis.
  • Findings showed a significant mismatch between physicians’ diagnoses and consensus results, with over-diagnosis of typical bacterial pneumonia and recommendations for specific clinical and lab indicators to better identify bacterial cases.
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Article Synopsis
  • - This study examines how symptoms from sport-related concussions (SRC) and non-SRC recover in young children aged 5 to 12 years over a period of 12 weeks.
  • - The research included 1,747 children from various pediatric emergency departments and analyzed their symptom changes using a standardized inventory to gather self-reported and parent-reported data.
  • - The findings aim to provide insights into the differences in symptom recovery trajectories between younger children and highlight any variations based on the type of injury experienced.
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Article Synopsis
  • * It involves a subgroup analysis of over 3,100 participants from the MINT clinical trial conducted across multiple countries between 2017 and 2023, with a 30-day follow-up period and primary outcomes related to death or recurrent MI.
  • * Results indicated that 34.3% of participants had acute anemia, and the researchers explored the link between anemia type and post-MI outcomes, assessing various secondary complications as well.
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Background: The optimal hemoglobin threshold to guide red blood cell (RBC) transfusion for patients with acute myocardial infarction (MI) and anemia is uncertain.

Objective: To estimate the efficacy of 4 individual hemoglobin thresholds (<10 g/dL [<100 g/L], <9 g/dL [<90 g/L], <8 g/dL [<80 g/L], and <7 g/dL [<70 g/L]) to guide transfusion in patients with acute MI and anemia.

Design: Prespecified secondary analysis of the MINT (Myocardial Ischemia and Transfusion) trial using target trial emulation methods.

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Tunability of topological edge states in germanene at room temperature.

J Mater Chem C Mater

October 2024

Physics of Interfaces and Nanomaterials, MESA+ Institute, University of Twente, P.O. Box 217 7500AE Enschede The Netherlands

Germanene is a two-dimensional topological insulator with a large topological band gap. For its use in low-energy electronics, such as topological field effect transistors and interconnects, it is essential that its topological edge states remain intact at room temperature. In this study, we examine these properties in germanene using scanning tunneling microscopy and spectroscopy at 300 K and compare the results with data obtained at 77 K.

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Article Synopsis
  • * A total of 205 patients participated, with a 1-year target-vessel failure (TVF) rate of 7.4%, significantly below the performance goal set at 24.5%, and a 3-year TVF rate of 12.1%.
  • * The findings indicate that using a provisional stenting approach for bifurcation lesions with the Resolute Onyx ZES led to positive clinical outcomes, suggesting it
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Objective: To examine the effectiveness of an education intervention for reducing physician diagnostic error in identifying pediatric burn and bruise injuries suspicious for abuse, and to determine case-specific variables associated with an increased risk of diagnostic error.

Study Design: This was a multicenter, prospective, cross-sectional study. A convenience sample of pediatricians and other front-line physicians who treat acutely injured children in the United States and Canada were eligible for participation.

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Purpose: The pan-cancer presence of microsatellite instability (MSI)-positive tumors demonstrates its clinical utility as an agnostic biomarker for identifying immunotherapy-eligible patients. Additionally, MSI is a hallmark of Lynch syndrome (LS), the most prevalent cancer susceptibility syndrome among patients with colorectal and endometrial cancer. Therefore, MSI-high results should inform germline genetic testing for cancer-predisposing genes.

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Learning curves can be used to design, implement, and evaluate educational interventions. Attention to key aspects of the method can improve the fidelity of this representation of learning as well as its suitability for education and research purposes. This paper addresses when to use a learning curve, which graphical properties to consider, how to use learning curves quantitatively, and how to use observed thresholds to communicate meaning.

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Restrictive or Liberal Transfusion Strategy in Myocardial Infarction and Anemia.

N Engl J Med

December 2023

From the Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Brunswick, NJ (J.L.C., W.J.K., H.N., S.K.); the Departments of Epidemiology and Biostatistics, School of Public Health, University of Pittsburgh (M.M.B., M.B., S.F.K.), and the Department of Pathology, Division of Transfusion Medicine, University of Pittsburgh School of Medicine (D.J.T.) - both in Pittsburgh; the Bruyere Research Institute, University of Ottawa (P.C.H.), and the Clinical Epidemiology Program, Ottawa Hospital Research Institute (D.A.F.), Ottawa, St. Michael's Hospital, University of Toronto, Toronto (S.G.G.), Canadian VIGOUR Centre, University of Alberta (S.G.G.), and the Department of Medicine, Grey Nuns Hospital (M.S.), Edmonton, CHUM Research Centre (B.J.P.), the Departments of Anesthesiology and Medicine, Division of Critical Care, Centre Hospitalier de l'Université de Montréal, Innovation and Evaluation Hub, Centre de Recherche du CHUM (F.M.C., P.C.H.), and the Department of Anesthesiology and Pain Medicine, Université de Montréal (F.M.C.), Montreal, the Department of Medicine, McMaster University, Hamilton, ON (J.D.N.), the Division of Cardiology and Centre for Cardiovascular Innovation, Vancouver General Hospital and University of British Columbia, Vancouver (C.B.F.), and Centre Hospitalier Universitaire (CHU) de Sherbrooke, Université de Sherbrooke, Sherbrooke, QC (B.D.) - all in Canada; the National Heart, Lung, and Blood Institute, Bethesda, MD (S.A.G.); St. Louis University School of Medicine, St. Louis (B.R.C.); FACT (French Alliance for Cardiovascular Trials) (T.S., G.D., P.G.S.), Service de Pharmacologie, Plateforme de Recherche Clinique de l'Est Parisien, Assistance Publique-Hôpitaux de Paris (AP-HP), Hôpital Saint Antoine, Sorbonne Université (T.S.), Université Paris-Cité, INSERM Unité 1148 and AP-HP, Hôpital Bichat (G.D., P.G.S.), Sorbonne Université, ACTION Study Group, INSERM UMRS1166, Hôpital Pitié-Salpêtrière AP-HP (J.S.), and AP-HP, Hôpital Européen Georges Pompidou, Department of Cardiology, Université de Paris (E.P.), Paris, Hôpital Pasteur, Service de Cardiologie, CHU Nice, Nice (E.F.), University Hospital of Poitiers, Clinical Investigation Center (INSERM 1204), Cardiology Department, Poitiers (C.B.), and Nimes University Hospital, Montpelier University, ACTION Group, Nimes (B.L.) - all in France; Duke Clinical Research Institute, Duke University, Durham (R.D.L., J.H.A.), and the Department of Medicine, WakeMed Health and Hospitals, Winston-Salem (F.O.W.) - both in North Carolina; Brazilian Clinical Research Institute, Sao Paulo (R.D.L., P.G.M.B.S.); the Department of Medicine, Baystate Medical Center, Springfield (A.M.G.), and the Department of Pathology (L.U.) and Richard A. and Susan F. Smith Center for Outcomes Research in Cardiology (J.B.S.), Beth Israel Deaconess Medical Center, Harvard Medical School, Boston - both in Massachusetts; the University of Nebraska Medical Center, Omaha (A.M.G.); the Department of Medicine, Vanderbilt University Medical Center, Nashville (A.P.D.); Lifespan Cardiovascular Institute and the Department of Medicine, Division of Cardiology, Alpert Medical School of Brown University, Providence, RI (J.D.A.); the Department of Medicine, NYU Langone Health System (S.V.R.), and the Department of Medicine, Montefiore Medical Center (M.A.M.), New York, and the Department of Cardiology, Westchester Medical Center, Valhalla (H.A.C.) - all in New York; the Department of Medicine, University of Louisville, Louiville, KY (S.G.); UChicago AdventHealth Heart and Vascular (M.T.) and the Department of Medicine, University of Chicago Medicine (T.S.P.) - both in Chicago; and Green Lane Coordinating Center, Auckland, New Zealand (C.A., H.D.W.).

Article Synopsis
  • A study compared two blood transfusion strategies for patients with myocardial infarction and low hemoglobin: a restrictive strategy (transfusion if hemoglobin <7 or 8 g/dL) and a liberal strategy (transfusion if hemoglobin <10 g/dL).
  • Involving 3,504 patients, results showed that the liberal group received significantly more transfusions but did not experience a reduced risk of death or recurrent myocardial infarction at 30 days compared to the restrictive group.
  • The findings suggest that while the liberal strategy may not improve outcomes, the potential risks of the restrictive strategy remain uncertain, indicating the need for further research.
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Bleeding and Ischemic Risk Prediction in Patients With High Bleeding Risk (an EVOLVE Short DAPT Analysis).

Am J Cardiol

November 2023

Beth Israel Deaconess Medical Center, Boston, Massachusetts; Richard and Susan Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts. Electronic address:

The EVOLVE Short DAPT study demonstrated the safety of truncated dual antiplatelet therapy (DAPT) in patients with a high bleeding risk (HBR) treated with SYNERGY stent(s) (Boston Scientific Company, Marlborough, Massachusetts). In this population, bleeding and ischemic risk prediction may further inform DAPT decisions. This post hoc analysis of the EVOLVE Short DAPT study identified predictors of ischemic and bleeding events up to 15 months using Cox proportional hazard models.

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Article Synopsis
  • The study explores the effectiveness of PARP inhibitors in treating various cancers, focusing on the relationship between genomic loss of heterozygosity (gLOH) and gene alterations in patients.
  • It analyzes 406 tumor samples using next-generation sequencing (NGS), highlighting that nearly 21% of tumors displayed homologous recombination (HR) variations, while about 5% had gene alterations.
  • The findings suggest a strong correlation between high gLOH percentages and positive gene alterations, indicating that assessing gLOH could help identify more patients who may benefit from PARP inhibitors.
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Interactive computer-assisted learning as an educational method for learning pediatric interproximal dental caries identification.

Oral Surg Oral Med Oral Pathol Oral Radiol

September 2023

Division of Pediatric Emergency Medicine, Department of Pediatrics, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada. Electronic address:

Objective: We developed a web-based tool to measure the amount and rate of skill acquisition in pediatric interproximal caries diagnosis among pre- and postdoctoral dental students and identified variables predictive for greater image interpretation difficulty.

Study Design: In this multicenter prospective cohort study, a convenience sample of pre- and postdoctoral dental students participated in computer-assisted learning in the interpretation of bitewing radiographs of 193 children. Participants were asked to identify the presence or absence of interproximal caries and, where applicable, locate the lesions.

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Background/aim: Nivolumab is an FDA-approved immune checkpoint inhibitor (ICI) for patients with advanced, pre-treated non-small cell lung cancer (NSCLC). However, treatment profiles and patient outcomes often differ in routine clinical practice while the financial impact of approved therapies is largely unknown. In this study, we investigated the efficacy, tolerability, and economic impact of nivolumab in real-world settings (RWS) in Greece.

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Clinical Outcomes Beyond 1L -TKI Progression in mNSCLC: Final Results of the Real-World Study 'LUNGFUL'.

Anticancer Res

May 2023

Third Department of Medicine, National and Kapodistrian University of Athens, School of Medicine, Sotiria Hospital, Athens, Greece.

Article Synopsis
  • The study aimed to gather real-world data on the EGFR mutational profile and treatment strategies for advanced non-small-cell lung cancer (NSCLC) patients after first/second-generation EGFR-TKI treatment.
  • Ninety-six patients were enrolled in Greece, with re-biopsies conducted for some who were negative for the T790M mutation.
  • Results showed that 21.9% of patients were T790M-positive, and those receiving third-generation EGFR-TKIs had better outcomes, highlighting the importance of mutational status and treatment choices in improving response rates and progression-free survival.
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Article Synopsis
  • Cancer pain management needs a thorough evaluation by a skilled multidisciplinary team to create personalized treatment plans.
  • Breakthrough cancer pain (BTcP) significantly affects patients' quality of life and is closely linked to tumor characteristics.
  • The article emphasizes the importance of awareness and better diagnostic practices for BTcP, highlighting that it remains underdiagnosed and undertreated despite available therapies.
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Study Objective: Because number-based standards are increasingly controversial, the objective of this study was to derive a performance-based competency standard for the image interpretation task of point-of-care ultrasound (POCUS).

Methods: This was a prospective study. Operating on a clinically-relevant sample of POCUS images, we adapted the Ebel standard-setting method to derive a performance benchmark in 4 diverse pediatric POCUS applications: soft tissue, lung, cardiac and focused assessment with sonography in trauma (FAST).

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A Performance-Based Competency Assessment of Pediatric Chest Radiograph Interpretation Among Practicing Physicians.

J Contin Educ Health Prof

February 2024

Dr. Bregman: Division of Pediatric Emergency Medicine, Department of Pediatrics, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada. Dr. Thau: Division of Pediatric Emergency Medicine, Department of Pediatrics, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada. Dr. Pusic: Division of Pediatric Emergency Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard University; Boston, MA. Dr. Perez: Department of Diagnostic Imaging, University of Toronto, Ontario, Canada. Dr. Boutis: Division of Pediatric Emergency Medicine, Department of Pediatrics, Hospital for Sick Children and University of Toronto, Toronto, Ontario, Canada.

Introduction: There is limited knowledge on pediatric chest radiograph (pCXR) interpretation skill among practicing physicians. We systematically determined baseline interpretation skill, the number of pCXR cases physicians required complete to achieve a performance benchmark, and which diagnoses posed the greatest diagnostic challenge.

Methods: Physicians interpreted 434 pCXR cases via a web-based platform until they achieved a performance benchmark of 85% accuracy, sensitivity, and specificity.

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Importance: Determining how the timing of return to school is related to later symptom burden is important for early postinjury management recommendations.

Objective: To examine the typical time to return to school after a concussion and evaluate whether an earlier return to school is associated with symptom burden 14 days postinjury.

Design, Setting, And Participants: Planned secondary analysis of a prospective, multicenter observational cohort study from August 2013 to September 2014.

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Article Synopsis
  • - A 30-year-old female with no significant medical history experienced chest pressure, shortness of breath, and fever for 4 days, leading to signs of cardiogenic shock and elevated cardiac/inflammatory markers.
  • - An ECG indicated anterior ST-segment elevations, but coronary angiography showed normal arteries; echocardiogram revealed severe biventricular dysfunction, and a biopsy indicated lymphocytic myocarditis with a positive test for Coxsackie A virus.
  • - She was treated with an intra-aortic balloon pump, then advanced to venoarterial extracorporeal membrane oxygenation; after supportive care, she recovered fully as shown in follow-up tests.
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Cerebral Embolic Protection during Transcatheter Aortic-Valve Replacement.

N Engl J Med

October 2022

From the Department of Cardiovascular Medicine (S.R.K.), Cleveland Clinic Foundation (A.K.), Cleveland; Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles (R. Makkar); Columbia Interventional Cardiovascular Care (M.L.), Columbia University Medical Center (S.K.), New York; Leipzig Heart Center, University of Leipzig, Leipzig (M.A.-W.), Medizinische Klinik und Poliklinik I, Klinikum der Universität München and German Center for Cardiovascular Research (DZHK), Munich Heart Alliance, Munich (S.M.), Universitaetsklinikum Ulm, Ulm (W.R.), Medical Campus Lake Constance, Friedrichshafen (J.S.), and the Clinic for Internal Medicine and Cardiology, Technische Universität Dresden, Herzzentrum, Dresden (A.L.) - all in Germany; Pima Heart and Vascular, Tucson Medical Center Healthcare, Tucson, AZ (T.W.); Centennial Medical Center, Nashville (S.H.); Rigshospitalet, Copenhagen University Hospital, Copenhagen (L. Sondergaard); Heart Hospital of Austin, Austin (J.K.), Baylor Heart and Vascular Hospital, Dallas (R.C.S.), and Baylor Scott and White the Heart Hospital-Plano, Plano (K.H.) - all in Texas; Monash Medical Centre, Clayton, VIC, Australia (R.G.); Washington Hospital Center, Washington, DC (L. Satler); the Department of Neurology, University of Pennsylvania, Philadelphia (S.R.M.); Lahey Hospital and Medical Center, Burlington (S.J.B.), and Boston Scientific, Marlborough (R. Modolo, D.J.A., I.T.M.) - both in Massachusetts; Piedmont Heart Institute, Atlanta (V.H.T.); and the London School of Hygiene and Tropical Medicine, London (S.P.).

Background: Transcatheter aortic-valve replacement (TAVR) for the treatment of aortic stenosis can lead to embolization of debris. Capture of debris by devices that provide cerebral embolic protection (CEP) may reduce the risk of stroke.

Methods: We randomly assigned patients with aortic stenosis in a 1:1 ratio to undergo transfemoral TAVR with CEP (CEP group) or without CEP (control group).

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Objective: This study investigates whether acute treatment with ibuprofen, acetaminophen, or both is associated with resolution of headache or reduction of headache pain at 7 days post-concussion in children and youth.

Methods: A secondary analysis of the Predicting and Preventing Post-concussive Problems in Pediatrics (5P) prospective cohort study was conducted. Individuals aged 5-18 years with acute concussion presenting to nine Canadian pediatric emergency departments (ED) were enrolled from August 2013 to June 2015.

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Importance: In patients with severe aortic valve stenosis at intermediate surgical risk, transcatheter aortic valve replacement (TAVR) with a self-expanding supra-annular valve was noninferior to surgery for all-cause mortality or disabling stroke at 2 years. Comparisons of longer-term clinical and hemodynamic outcomes in these patients are limited.

Objective: To report prespecified secondary 5-year outcomes from the Symptomatic Aortic Stenosis in Intermediate Risk Subjects Who Need Aortic Valve Replacement (SURTAVI) randomized clinical trial.

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