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Rate-dependent left bundle branch block with angina pectoris and normal coronary arteriograms
Chest
|January 1, 1976
Insights
Effort-induced angina and rate-dependent left bundle-branch block can occur in patients with normal coronary arteries. This case highlights a specific presentation of cardiac syndrome X.
Area of Science:
- Cardiology
- Electrophysiology
Background:
- Angina pectoris with normal coronary arteries is a recognized clinical entity.
- Rate-dependent left bundle-branch block can manifest under specific physiological conditions.
Abstract:
A 46-year-old man developed rate-dependent left bundle-branch block and angina pectoris with effort. Angina pectoris and left bundle-branch block could be provoked with treadmill exercise testing and right atrial pacing. Coronary arteriograms were entirely normal on two separate occasions. The syndrome of angina pectoris with normal coronary arteries can include rate-dependent left bundle-branch block.