Deeply reinverted T wave at 14 days after the onset of first anterior acute myocardial infarction predicts improved left ventricular function at 6 months.
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ABSTRACT: BACKGROUND:Changes in electrocardiogram (ECG), especially in the ST segment and T wave, have been recognized as a noninvasive diagnostic tool for coronary flow or myocardial injury. HYPOTHESIS:A deeply inverted T wave at 14 days after successful percutaneous coronary intervention (PCI) in patients with ST-segment elevation acute myocardial infarction (STEMI) predicts improved left ventricular (LV) function at 6 months. METHODS:We enrolled 112 consecutive patients (88 men, 63?±?11?years) with first anterior STEMI who underwent successful PCI. A 12-lead ECG was recorded everyday from admission through 14 days. After PCI, the first T-wave inversion was observed within 2 days, and the second occurred at 14 days. We measured the maximum depth of the reinverted T wave (Neg-T) and divided the patients into 2 groups based on the median value of Neg-T: the deep group (?0.6 mV, n?=?62) and the nondeep group (<0.6 mV, n?=?50). RESULTS:LV ejection fraction (LVEF) at 14 days did not differ between the 2 groups, but it was greater in the deep than in the nondeep group at 6 months (50.0%?±?8.8% vs 42.5%?±?9.8 %, P?
SUBMITTER: Yokoyama H
PROVIDER: S-EPMC6711100 | biostudies-literature | 2015 Mar
REPOSITORIES: biostudies-literature
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