SIGNIFICANCE OF Q-WAVE DISAPPEARANCE IN THE CHRONIC PHASE FOLLOWING TRANSMURAL ACUTE MYOCARDIAL-INFARCTION

被引:20
作者
YASUDA, M
IIDA, H
ITAGANE, H
TAHARA, A
TODA, I
AKIOKA, K
TERAGAKI, M
OKU, H
TAKEUCHI, K
TAKEDA, T
YAMAGISHI, H
NARUKO, T
IKUNO, Y
机构
[1] First Department of Internal Medicine, Osaka City University Medical School, Osaka
[2] Department of Internal Medicine, Tane Hospital
来源
JAPANESE CIRCULATION JOURNAL-ENGLISH EDITION | 1990年 / 54卷 / 12期
关键词
MYOCARDIAL INFARCTION; Q WAVE LOSS; RELATIVE TL-201 ACTIVITY; WALL MOTION INDEX; POSTINFARCTION ANGINA PECTORIS;
D O I
10.1253/jcj.54.12_1517
中图分类号
N09 [自然科学史]; B [哲学、宗教];
学科分类号
01 ; 0101 ; 010108 ; 060207 ; 060305 ; 0712 ;
摘要
The mechanism and prognostic implications of Q wave regression following transmural acute myocardial infarction (AMI) were assessed in 54 patients. Of these subjects, 14 lost their Q waves. Exercise myocardial thallium-201 (Tl-201) scintigraphy and two-dimensional echocardiography were performed before the patients were discharged from hospital. Two-dimensional echocardiography and electrocardiography were simultaneously repeated about 18 months after AMI. Both the relative Tl-201 activity in the infarcted area and the improvement of echocardiographic wall motion index were higher in patients who had lost their Q waves than in those with retained Q waves (70 +/- 14% vs 58 +/- 13%, p < 0.01; 5.2 +/- 3.0 vs 2.0 +/- 3.4, p < 0.01, respectively). The prevalence of post-infarction angina pectoris was significantly higher in the former (29% vs 0%, p < 0.01). We concluded that remnants of viable myocardial muscle might be responsible for Q wave regression following transmural acute myocardial infarction, and the prevalence of post-infarction angina pectoris was high among these patients.
引用
收藏
页码:1517 / 1524
页数:8
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