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Nonsyphilitic coronary ostial stenosis
Insights
Coronary ostial stenosis treatment using bypass grafts offers symptom relief for most patients. Ideally, two bypass grafts are recommended for left ostial disease to ensure optimal outcomes.
Area of Science:
- Cardiovascular Surgery
- Interventional Cardiology
- Vascular Medicine
Background:
- Atherosclerotic coronary ostial stenosis is a rare condition affecting the origins of the coronary arteries.
- It can lead to significant myocardial ischemia and angina pectoris.
Purpose of the Study:
- To evaluate the surgical outcomes of coronary bypass grafting in patients with atherosclerotic coronary ostial stenosis.
- To assess graft patency and long-term symptom relief.
Main Methods:
- Retrospective review of 15 patients (1970-1977) with atherosclerotic coronary ostial stenosis.
- Surgical intervention included coronary artery bypass grafting (CABG) and, in select cases, aortic valve replacement.
- Postoperative assessment included clinical evaluation and coronary angiography.
Main Results:
- 14 of 15 patients underwent CABG; 11 remain angina-free postoperatively.
- Graft patency rates were high: 11/13 vein grafts and 8/9 internal mammary artery grafts were patent.
- Mortality occurred in two patients, one with valve replacement and one with preoperative cardiogenic shock.
Conclusions:
- Coronary artery bypass grafting is an effective treatment for atherosclerotic coronary ostial stenosis, providing significant relief from angina.
- Optimal surgical strategy may involve bilateral internal mammary artery grafting or two bypass grafts for left ostial disease.
- Long-term graft patency is favorable, supporting the durability of surgical intervention.
Abstract:
From October 1970 to June 1977, a total of 15 patients (12 women) were seen with atherosclerotic coronary ostial stenosis (14 left, one right). All patients had angina and two had aortic valve disease. Additional coronary arterial disease was present in nine. One patient declined surgery and died four months later after myocardial infarction. All patients had coronary bypass grafts and two had aortic valve replacement. One patient with valve replacement and one with preoperative cardiogenic shock died postoperatively. Angina recurred nine months postoperatively in one patient; the others (11) are free of angina. Postoperative catheterization from two weeks to 4.5 years in ten of 12 showed 11 of 13 vein grafts and eight of nine internal mammary artery grafts to be patent. In three patients, only a single left-sided coronary bypass was placed to the left anterior descending artery, because the circumflex branches were too small. Ideally, two left-sided bypass grafts should be placed for left ostial disease.