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LR Klein, GR Shroff, W Beeman and SW Smith
Abstract
ST elevation (STE) on the electrocardiogram (ECG) may be due to acute myocardial infarction (AMI) or other nonischemic pathologies such as left ventricular aneurysm (LVA). The objective of this study was to validate 2 previously derived ECG rules to distinguish AMI from LVA. The first rule states that if the sum of T-wave amplitudes in leads V1 to V4 divided by the sum of QRS amplitudes in leads V1 to V4 is greater than 0.22, then acute ST-segment elevation MI is predicted. The second rule states that if any 1 lead (V1-V4) has a T-wave amplitude to QRS amplitude ratio greater than or equal to 0.36, then acute ST-segment elevation MI is predicted.
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Concepts
Cardiology, Ventricular aneurysm, Acute coronary syndrome, QRS complex, Atherosclerosis, Electrocardiography, Ventricular fibrillation, Myocardial infarction
MeSH headings
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