Prevalence and Associated Clinical Characteristics of Exercise-Induced ST-Segment Elevation in Lead aVR.

Autor: James McKinney, Ian Pitcher, Christopher B Fordyce, Masoud Yousefi, Tee Joo Yeo, Andrew Ignaszewski, Saul Isserow, Sammy Chan, Krishnan Ramanathan, Carolyn M Taylor
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: PLoS ONE, Vol 11, Iss 7, p e0160185 (2016)
Druh dokumentu: article
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0160185
Popis: BACKGROUND:Exercise-induced ST-segment elevation (STE) in lead aVR may be an important indicator of prognostically important coronary artery disease (CAD). However, the prevalence and associated clinical features of exercise-induced STE in lead aVR among consecutive patients referred for exercise stress electrocardiography (ExECG) is unknown. METHODS:All consecutive patients receiving a Bruce protocol ExECG for the diagnosis of CAD at a tertiary care academic center were included over a two-year period. Clinical characteristics, including results of coronary angiography, were compared between patients with and without exercise-induced STE in lead aVR. RESULTS:Among 2227 patients undergoing ExECG, exercise-induced STE ≥1.0mm in lead aVR occurred in 3.4% of patients. Patients with STE in lead aVR had significantly lower Duke Treadmill Scores (DTS) (-0.5 vs. 7.0, p
Databáze: Directory of Open Access Journals