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Venous graft surgery in treatment of coronary heart disease
Insights
Aortocoronary venous graft bypass surgery for severe coronary heart disease showed low mortality in select patients. Survivors experienced significant symptom relief and improved exercise tolerance, demonstrating the procedure
Area of Science:
- Cardiovascular Surgery
- Cardiac Surgery Outcomes
- Coronary Heart Disease Treatment
Background:
- Severe coronary heart disease (CHD) poses significant risks and impacts quality of life.
- Surgical revascularization aims to alleviate symptoms and improve outcomes in advanced CHD.
- Aortocoronary venous bypass grafting is a primary surgical intervention for CHD.
Purpose of the Study:
- To evaluate the outcomes of aortocoronary venous graft bypass surgery in patients with severe CHD.
- To assess operative, hospital, and late mortality rates.
- To determine the impact of the surgery on patient symptoms, exercise tolerance, and left ventricular function.
Main Methods:
- Retrospective analysis of 67 patients undergoing aortocoronary venous graft bypass surgery by a single surgeon.
- Inclusion of emergency and elective operations.
- Assessment of preoperative patient characteristics (myocardial function, previous myocardial infarction, chest radiogram, left ventricular end-diastolic pressure, left ventricular angiography) and postoperative outcomes.
Main Results:
- Low overall operative, hospital, and late mortality, particularly in patients with favorable myocardial function and no prior myocardial infarction.
- Mortality rates varied based on preoperative conditions: 7% with normal chest radiogram, 8% with normal left ventricular end-diastolic pressure, and 5% with normal left ventricular angiograms.
- Elective operations for medically refractory cardiac pain had a 15.8% mortality. 89% of survivors improved, with 67% becoming pain-free. Exercise tolerance increased by 135%, and left ventricular function improved.
Conclusions:
- Aortocoronary venous graft bypass surgery is associated with low mortality in carefully selected patients with severe coronary heart disease.
- The procedure leads to significant improvements in symptoms, exercise capacity, and left ventricular function in survivors.
- Improved left ventricular function correlates positively with vein-graft patency and freedom from angina.
Abstract:
Sixty-seven patients have had aortocoronary venous graft bypass surgery by one surgeon for the relief of symptoms of severe coronary heart disease, including eight emergency operations. The overall operative, hospital, and late mortality was low in patients with favourable myocardial function and no previous myocardial infarction. There was a 7% mortality in patients with a normal preoperative chest radiogram, 8% mortality when the left ventricular end-diastolic pressure was normal preoperatively, and a 5% mortality in patients who had normal left ventricular angiograms. The overall mortality in all elective operations for cardiac pain resistant to medical treatment was 15.8%. 89% of survivors improved; 67% are pain-free. Exercise tolerance in survivors is increased by 135%, atrial pacing results are improved by 10%. Left ventricular end-diastolic pressure is unchanged. Left ventricular function on angiography is improved. The improvement in left ventricular function assessed objectively correlates positively with vein-graft patency, as does freedom from angina pectoris.