Author/Editor		Štajer, D; Možina, H; Noč, M; Rode, P
Title		Correlation between QTc interval duration and left ventricular systolic dysfunction in patients with acute myocardial infarction
Type		članek
Source		J Electrocardiol
Vol. and No.		Letnik 26, št. 4
Publication year		1993
Volume		str. 333-40
Language		eng
Abstract		QTc interval and left ventricular regional wall motion abnormality score (WMS) were assessed in 61 consecutive patients with 4-day-old acute myocardial infarction (AMI). There were 45 men and 16 women, aged 60.6 +/- 8.7 years; 24 had anterior wall AMI and 37 had inferior wall AMI. Twenty-nine patients received thrombolytic treatment, which was presumably successful in 19. The longest QTc interval from a standard 12-lead electrocardiogram, corrected by Bazett's formula, was considered for the study. The WMS was evaluated echocardiographically. The authors found a statistically significant correlation between WMS and QTc interval duration; the correlation was stronger in patients with anterior AMI (r = .9, P less th. .001) than in those with inferior AMI (r = .66, P less th. .001). The WMS and QTc values were significantly lower in patients with successful thrombolytic treatment compared to those with unsuccessful thrombolysis (P less th. .003 and P less th. .002, respectively). The authors could demonstrate no significant correlation between serum potassium concentration and the QTc interval. In patients with anterior AMI, QTc interval duration might represent an additional marker of left ventricular systolic dysfunction. It could also be used as an additional noninvasive criterion of coronary artery reperfusion in patients with AMI.
Descriptors		ELECTROCARDIOGRAPHY MYOCARDIAL CONTRACTION MYOCARDIAL INFARCTION VENTRICULAR FUNCTION, LEFT ECHOCARDIOGRAPHY HEART CONDUCTION SYSTEM MIDDLE AGE MYOCARDIAL INFARCTION SENSITIVITY AND SPECIFICITY THROMBOLYTIC THERAPY TIME FACTORS