Medicine and Health Sciences Commons^™

Algorithms For Left Atrial Wall Segmentation And Thickness – Evaluation On An Open-Source Ct And Mri Image Database, Rashed Karim, Lauren Emma Blake, Jiro Inoue, Qian Tao, Shuman Jia, R. James Housden, Pranav Bhagirath, Jean Luc Duval, Marta Varela, Jonathan Behar, Loic Cadour, Rob J. Van Der Geest, Hubert Cochet, Maria Drangova, Maxime Sermesant, Reza Razavi, Oleg Aslanidi, Ronak Rajani, Kawal Rhode

Bone and Joint Institute

© 2018 The Authors Structural changes to the wall of the left atrium are known to occur with conditions that predispose to Atrial fibrillation. Imaging studies have demonstrated that these changes may be detected non-invasively. An important indicator of this structural change is the wall's thickness. Present studies have commonly measured the wall thickness at few discrete locations. Dense measurements with computer algorithms may be possible on cardiac scans of Computed Tomography (CT) and Magnetic Resonance Imaging (MRI). The task is challenging as the atrial wall is a thin tissue and the imaging resolution is a limiting factor. It is …

Predictors Of Major Bleeding Among Working-Age Adults With Atrial Fibrillation: Evaluating The Effects Of Potential Drug-Drug Interactions And Switching From Warfarin To Non-Vitamin K Oral Anticoagulants, Xue Feng, Usha Sambamoorthi, Kim Innes, Gregory Castelli, Traci Lemasters, Lianjie Xiong, Michael U. Williams, Xi Tan

Clinical and Translational Science Institute

Purpose This study aims to evaluate the associations between switching from warfarin to non-vitamin K oral anticoagulants (NOACs), exposure to potential drug-drug interactions (DDIs), and major bleeding events in working-age adults with atrial fibrillation (AF). Methods We conducted a retrospective cohort study using the claims database of commercially insured working-age adults with AF from 2010 to 2015. Switchers were defined as patients who switched from warfarin to NOAC; non-switchers were defined as those who remained on warfarin. We developed novel methods to calculate the number and proportion of days with potential DDIs with NOAC/warfarin. Multivariate logistic regressions were utilized to …

Designing Tailored Patient Education On Atrial Fibrillation, Tammy Toscos, R Ahmed, Romisa Rohani Ghahari, Elizabeth Martin, Shauna Wagner, Michelle Drouin, Michael J. Mirro

Presentations and Events

Background & Hypothesis: Research has revealed a high prevalence of depression, anxiety, and burnout among medical students accompanied by widespread lack of treatment. We hypothesize that by leveraging our study findings examining the use of telemental health(TMH) among youth (ages 14-24) alongside results from existing research focused on the mental health needs of medical students (median age at start 22-24 years old), we will gain valuable insight into the potential for TMH to address the needs of this high-risk population.

Methods: Using the Delphi method, a sample of 25 experts were surveyed anonymously, thus avoiding group pressure for conformity while …

Massive Spontaneous Hemothorax As A Complication Of Apixaban Treatment, Mohammad Abu Hishmeh, Priyaha Srivastava, Quinn Lougheide, Maria Srinivasan, Shekar Murthy

NYMC Residents/Fellows Publications

Introduction: Hemothorax is usually related to chest or iatrogenic trauma from procedures such as central lines and thoracentesis. Spontaneous hemothorax is defined as pleural fluid hematocrit greater than 50% of serum hematocrit in absence of natural or iatrogenic trauma affecting the lung or pleural space. Coagulopathy secondary to anticoagulant use has been associated with spontaneous hemothorax. We present a case of spontaneous hemothorax in a patient taking apixaban for venous thromboembolism disease. To our knowledge, this is the first case report of apixaban as a cause of spontaneous hemothorax. Case Presentation: A 56-year-old woman with end-stage renal disease (ESRD) was …

Long-Term Outcome Following Concomitant Mitral Valve Surgery And Cox Maze Procedure For Atrial Fibrillation, Niv Ad, Sari D. Holmes, Paul S. Massimiano, Anthony J. Rongione, Lisa M. Fornaresio

Clinical and Translational Science Institute

Objective—Atrial fibrillation (AF) is associated with increased early and long-term morbidity/ mortality following valve surgery. This study examined long-term influence of concomitant full Cox maze (CM) and mitral valve procedures on freedom from atrial arrhythmia and stroke. Methods—This sample comprised patients who underwent CM with a mitral valve procedure (N = 473). Data on rhythm, medication status, and clinical events captured according to Heart Rhythm Society guidelines at 6, 9, 12, 18, and 24 months and yearly thereafter up to 7 years. Results—Mean age was 65 years, mean left atrium size was 5.3 cm, and 15% had paroxysmal AF. Perioperative …

The Importance Of Left Atrial Volume Assessment In Identifying The Cause Of Ischemic Stroke, David Playford, Sarah Bowler, Max Bulsara, David J. Blacker, Timothy R. Bates, James P. Codde

Medical Papers and Journal Articles

Separating cardioembolic from large artery stroke has important treatment implications. We investigated whether echocardiography could improve Cardioembolic Stroke (CES) prediction compared with traditional measures and cholesterol biomarkers.

Data from 40 consecutive patients presenting with acute ischemic stroke which included brain and carotid imaging, ECG, echo, serum cholesterol and apolipoproteins were independently reviewed. Patients were classified into two groups: a) CES, defined by sustained or paroxysmal atrial fibrillation and <50% stenosis of a perfusing cerebral artery; b) Large artery stroke (LAS) defined as > 50% stenosis of an ipsilateral perfusing cerebral artery, with no evidence of AF on monitoring or evidence of small artery disease on neuroimaging and confirmed by an independent neurologist.

Other than the …