Deeply reinverted T wave at 14 days after the onset of first anterior acute myocardial infarction predicts improved left ventricular function at 6 months.
Clin Cardiol
; 38(3): 157-63, 2015 Mar.
Article
en En
| MEDLINE
| ID: mdl-25757717
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 < 0.0001). The maximum creatinine phosphokinase-myocardial band (CPK-MB) value was significantly lower in the deep than in the nondeep group. Reappearance of the R wave in precordial leads at 6 months was more frequently observed in the deep than in the nondeep group (68% vs 46%, P = 0.02). Multivariate regression analysis showed that the Neg-T and max CPK-MB were independent contributors to LVEF at 6 months.CONCLUSIONS:
A deeply reinverted T wave at 14 days after onset of first anterior STEMI can be a useful predictive marker for improved LV function at 6 months.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Volumen Sistólico
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Función Ventricular Izquierda
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Electrocardiografía
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Infarto de la Pared Anterior del Miocardio
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Intervención Coronaria Percutánea
Tipo de estudio:
Diagnostic_studies
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Observational_studies
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Prognostic_studies
Límite:
Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Clin Cardiol
Año:
2015
Tipo del documento:
Article
País de afiliación:
Japón