Effect of reperfusion arrhythmia on left ventricular reconstruction of acute myocardial infarction

Objective To study the relationship between reperfusion arrhytlunia and left ventricular reconstruction of acute myocardial infarction(AMI).Methods 150 AMI cases undergone emergent reperfusion treatment were divided into reperfusion arrhythmia group(BA group,n=52)and non-reperfusion arrhythmia group(Non-RA group,n=98).The heart color B-ultrasound wag carried out at the periods of 1 week,6 months and 1 year for detecting left ventricular ejection fraction(LVEF)and left ventricular end diastolic diameter(LVEDD).Results The time for reopening of blood vessel of BA group war later than in Non-RA group,whose incidence of anterior descending branch lesion was higher than that of Non-BA group(P＜ 0.05).1 week after successful reperfusion treatment,there was no significant difference in LVEF and LVEDD between RA group and Non-RA group[(47.7±9.6)%and (49.2±8.7)%,P＞0.05;(59.8±10.3)mm and(58.8±12.3)mm,P＞0.05];A year later after successful reperfusion treatment,LVEF in Non-HA group was remarkably higher than that in acute stage and RA group [(59.3±9.3)%,(49.2±8.7)% and (49.9±10.1)%,P＜0.05],but there was no difference in LVEDD(P＞0.05)with a tendency of increasing.Conclusion The severe ischemic patients are easy to develop reperfusion arrhythmia,which influences the recovery of left ventricular function and improve the left ventricular reconstrucion. Key words: Acute myocardial infarction;  Reperfusion arrhythmia;  Left ventricular reconstruction