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[Coronary stenosis in angina pectoris with normal resting electrocardiogram]
Archives Des Maladies Du Coeur Et Des Vaisseaux
|September 1, 1977
Summary
Patients with typical angina pectoris and normal resting electrocardiograms show similar coronary artery disease severity but better left ventricular function. This suggests they may benefit more from aorta-coronary bypass grafts.
Area of Science:
- Cardiology
- Vascular Surgery
Background:
- Typical angina pectoris can present with normal or abnormal electrocardiogram (ECG) findings at rest.
- Understanding arteriographic differences between these presentations is crucial for treatment decisions.
Purpose of the Study:
- To compare arteriographic abnormalities in patients with typical angina pectoris and normal versus abnormal resting ECGs.
- To assess the implications for left ventricular function and surgical intervention.
Main Methods:
- Retrospective analysis of arteriographic data from 104 patients with normal resting ECGs and 238 patients with abnormal resting ECGs (ST/T changes or transmural necrosis).
- Comparison of coronary stenosis degree, extent, distribution, and left ventricular function parameters.
Main Results:
- No significant differences in overall coronary stenosis severity, extent, or distribution between groups.
- Slightly less frequent very tight stenoses and less severe lesions in the circumflex and right coronary arteries in the normal ECG group.
- Significantly better preserved left ventricular function and lower left ventricular end-diastolic pressure in patients with normal resting ECGs (p < 0.001).
Conclusions:
- Patients with typical angina and normal resting ECGs exhibit comparable coronary artery disease burden but superior left ventricular function.
- Aorta-coronary bypass grafting may be a more favorable option for patients with typical angina and normal resting ECGs due to better ventricular reserve.