Relation of QT dispersion to infarct size and left ventricular wall motion in anterior wall acute myocardial infarction.
Am J Cardiol
; 83(10): 1423-6, 1999 May 15.
Article
en En
| MEDLINE
| ID: mdl-10335755
ABSTRACT
Previous studies have shown that QT dispersion increases during acute myocardial infarction (AMI). However, the relation of QT dispersion to infarct size and left ventricular (LV) function in AMI has not yet been fully clarified. Accordingly, this study was conducted to elucidate this relation at 1 month after anterior wall AMI. We examined 94 patients with first anterior wall AMI (< or = 6 hours) who underwent coronary arteriography at admission, 1 month, and 6 months after AMI, and left ventriculography at 1 and 6 months after AMI. Mean QT dispersion on the chronic phase (about 1 month after AMI) electrocardiogram was 79 +/- 33 ms. There were no significant correlations between QT dispersion and peak creatine phosphokinase levels, LV ejection fraction, and regional wall motion in the infarct region at 1 month after AMI (r = 0.06, p = 0.57; r = 0.11, p = 0.29; r = -0.05, p = 0.63, respectively). In conclusion, the findings of this study suggest that QT dispersion on the resting electrocardiogram at 1 month after anterior wall AMI is unrelated to infarct size estimated by the peak creatine phosphokinase level and the degree of LV dysfunction.
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Banco de datos:
MEDLINE
Asunto principal:
Función Ventricular Izquierda
/
Electrocardiografía
/
Sistema de Conducción Cardíaco
/
Contracción Miocárdica
/
Infarto del Miocardio
Límite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Am J Cardiol
Año:
1999
Tipo del documento:
Article
País de afiliación:
Japón