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Isolated coronary ostial stenosis compared with left main trunk disease
1Department of Thoracic Surgery, Juntendo University, Tokyo, Japan.
Japanese Circulation Journal
|December 1, 1991
Summary
Isolated coronary ostial stenosis (OS) is a rare condition distinct from left main trunk disease (LMTD). Coronary bypass grafting offers good outcomes for both OS and LMTD patients.
Area of Science:
- Cardiology
- Vascular Surgery
- Medical Research
Background:
- Isolated coronary ostial stenosis (OS) is a rare condition with an unknown cause.
- This study compares the clinical characteristics of OS with atherosclerotic left main trunk disease (LMTD).
Purpose of the Study:
- To differentiate the clinical and angiographic profiles of isolated coronary ostial stenosis from left main trunk disease.
- To evaluate the efficacy of aorto-coronary bypass grafting for OS.
Main Methods:
- Retrospective analysis of 5 OS cases and 111 LMTD cases among elective coronary bypass patients.
- Comparison of demographic data, clinical presentation, left ventricular function, and surgical outcomes.
Main Results:
- OS patients were younger (43.0 vs 61.2 years) and predominantly female (80% vs 9%) compared to LMTD patients.
- OS group presented more often with unstable angina and had preserved left ventricular function.
- Both groups showed good surgical prognosis with aorto-coronary bypass grafting; operative mortality was 0% for OS and 0.9% for LMTD.
Conclusions:
- Clinical and angiographic findings suggest OS is a distinct entity separate from LMTD.
- Aorto-coronary bypass grafting is a safe and effective treatment for isolated coronary ostial stenosis.