Inferior ST segment depression as a useful marker for identifying proximal left anterior descending artery occlusion during acute anterior myocardial infarction
- 1 December 1995
- journal article
- research article
- Published by Oxford University Press (OUP) in European Heart Journal
- Vol. 16 (12) , 1795-1799
- https://doi.org/10.1093/oxfordjournals.eurheartj.a060830
Abstract
To determine whether or not ST segment deviation on admission electrocardiograms can identify patients with anterior acutge myocardial infarction due to proximal left anterior descending artery occlusion, the magnitude and location of ST segment elevation or depression were compared between patients with proximal left anterior descending artery occlusion (group A, n=47) and those with distal left anterior descending artery occlusion (group B, n =59). ST segment depression in each of the inferior leads was significantly greater in group A than in group B. The incidence of ST segment depression ≥ 1 mm in each of the inferior leads (II; 81% vs 27%, III; 85% vs 54%, aVF; 87% vs 47%, PPPP2 alone or ST segment elevation ≥ 1 mm in lead a VL had a low diagnostic value (43% sensitivity and 86% specificity, 66% sensitivity and 53% specificity, respectively). In conclusion, this study indicates that analysis of ST segment deviation in the inferior leads is useful for identifying patients with acute anterior myocardial infarction due to proximal left anterior descending occlusion.Keywords
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