Analysis on relationship between transmural dispersion of repolarization increase and prognosis of malignant ventricular arrhythmia in patients with myocardial infarction / 重庆医学

ABSTRACT

Objective To explore the relationship between the increase of transmural dispersion of repolarization with ventricular arrhythmia,myocardial infarction degree and coronary events in elderly patients with myocardial infarction at T peak-T end interval in order to provide the guidance instruction for the assessment of prognosis of elderly myocardial infarction.Methods One hundred and twenty cases of senile myocardial infarction in the cardiology department of our hospital were selected,including 73 males and 47 females,the average age was (62.37 ± 11.34) years old.In addition,76 elderly cases of other heart disease were selected as the control group,including 42 males and 34 females,the average age was (59.56 ± 12.64) years old.The T peak-T end interval,dispersion and T peak-T end interval and dispersion after correcting the heart ratein different groups were analyzed.Results The T peak-T end interval,dispersion and T peak-T end interval and dispersion after correcting the heart rate had statistical differences between the control group and AMI group at admission and between the acute stage and recovery stage in the AMI group (P＜0.01);the T peak-T end interval and dispersion before and after correcting the heart rate had statistical differences among the patients with different ventricular arrhythmia (P＜0.01);the T peak-T end interval and dispersion before and after correcting the heart rate had statistical differences among the patients with anterior lateral wall,anterior wall,inferior wall,high lateral wall and multiple vessels infarction (P＜0.01);the case death after correcting the heart rate in different degrees and coronary event occurrence at admission had statistical difference (P＜0.01).Conclusion The T peak-T end interval has a close relation with malignant arrhythmia occurrence,which has an important predictive value for the short term prognosis in elderly patients with AMI.