Disappearance of septal q-wave or appearance of abnormal Q-wave in V5 and V6 after onset of anterior acute myocardial infarction: electrocardiographic and angiographic correlations
ZHAN Zhong-qun
WANG Chong-quan
HE Chao-rong
MAO Shan
WANG Zhi-xiao
摘要：Background The factors influencing the q-wave changes in V5 and V6 during anterior acute myocardial infarction (AMI) have not been thoroughly described.Methods We studied 70 patients with a first anterior AMI,in whom the electrocardiogram (ECG) showed either disappearance of the normal septal q wave (n =24) or presence of pathological Q wave in V5 and V6 (n =46) during follow-up.The ECG and coronary angiography findings were correlated.Results There was no difference between the 2 groups in the culprit site proximal to S1 (46％ vs.36％,P =0.405),but the culprit site was more frequently located proximal to D1 in the group with abnormal Q wave (21％ vs.67％,P =0.001 ).Patients with disappearance of the septal q wave more often had a large obtuse marginal branch (46 ％ vs.22％,P =0.037) and disappearance of the r wave in V1 (88％ vs.7％,P =0.001).Patients with abnormal Q-wave more often had a large LAD (42％ vs.71％),small r wave or tall or wide R wave in V1 (0 ％ vs.89 ％,P =0.001) and abnormal Q waves in the inferior leads (33％ vs.59％,P =0.044).Conclusions In patients with first anterior AMI,q wave changes in V5 and V6 correlated with the morphology in V1.Emerging abnormal Q wave in V5/V6 predicted the culprit lesion in a large LAD proximal to D1,but disappearance of the septal q wave could not predict the culprit lesion proximal to S1.[S Chin J Cardiol2012; 13(2):93-104]
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分类号：R542.22(心脏、血管（循环系）疾病)
论文发表日期：2012-07-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
英文信息