Evaluation of Intracoronary Electrocardiogram on Myocardial Ischemia During Percutaneous Transluminal Coronary Angioplasty
Zhu Guoying ,Dong Jin wen ,Ding Yansheng,et al (Department of Cardiology ,First Hospital ,Beijing Medical University ,Beijing)
The changes of intracoronary electrocardiogram (IC-ECG) and surface electro-cardiogram (S-ECG) were recorded simultaneously during percutaneous transluminal coronary angioplasty(PTCA) in 33 cases of coronary heart diseases with 41 vessel lesions. The results sug-gested that ST-segment change rate on IC-ECG(90. 2%) was higher than that on S-ECG(56%). ST-segment elevation on IC-ECG was earlier and more significant than that on S-ECG. The IC-ECG appeared to be more sensitive than S-ECG for detecting myocardial ischemia. The technique for recording IC-ECG is simple and it can help to perfome the PTCA successfully.