engleski

The changes in the electrocardiogram of alcoholics

The aim of the study was to analyze the corrected QT interval (QTc), its dispersion (QTcd) and the QT interval index (QTcI), and to compare it to the corrected JT interval (JTc), its dispersion (JTcd) and the JT interval index (JTcI) in chronic alcoholics, by investigating the ventricular activation until the completion of repolarization. The study of ECGs was performed on a selected group of 49 male Caucasian alcoholics. The results of the descriptive statistics in the group of alcoholics showed the range of the QTcd of 12.0 &#8211; 103.0 ms, mean 44.2 &#177; 18.6 ms, compared to 5.0 - 68.0 ms, mean 23.8 &#177; 11.1 ms in the control group (p< 0.0001). The range of JTcd in the alcoholics was 11.0-88.0 ms, mean 43.0 &#177; 18.3 ms, compared to 5.0 - 66.0 ms, mean 22.8 &#177; 12.1 ms in the control group (p< 0.0001). The QTc from 422.0 to 480.0 ms was obtained in 69.4% of the alcoholics and 32.6 % of the controls. The QTc over 480.0 ms was found in 24.5 % of the alcoholics, but was not recorded among the controls at all (p< 0.0001). The QTcd over 50.0 ms was registered in 34.7 % of the alcoholics, while in the controls the QTcd over 50 ms was found in 2.0% (p< 0.0001) The same was the case with the values of QTd, QTI, QTcd and QTcI. Also, the mean values of JTd, JTI, JTc, JTcd and JTcI were significantly higher in the alcoholics than in the controls (p<0.0001). Persons who excessively and for a long-time consume various alcoholic beverages have significantly higher dispersions of the QTc and JTc intervals and they have significantly higher estimation of relative risk for the prolonged QTc interval and higher QTc dispersion than the control group, i.e. higher risk of arrhythmias.

Alcohol consumption; Males; Electrocardiogram; QT; JT; Dispersion;

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