ABSTRACT
A comparative study of the functional state of the cardiovascular system (CVS) in the presence of chronic heart failure was performed 12 months following direct myocardial revascularization. It involved 49 patients with open aortal coronary bypasses and 20 patients with bypass occlusion. The CVS functional state was assessed by both invasive and noninvasive methods of investigation. The bypass patency was associated with an improvement in the patients' subjective conditions, an increased exercise tolerance and better indices of the left ventricle function. It is inferred that successful revascularization of the myocardium by an aortal coronary bypass produces a considerable therapeutic effect on the CVS functional state in patients with chronic heart failure.
Subject(s)
Coronary Artery Bypass , Coronary Circulation , Coronary Disease/surgery , Heart/physiopathology , Adult , Chronic Disease , Follow-Up Studies , Humans , Male , Middle Aged , Time FactorsABSTRACT
Of the 210 patients who underwent direct coronary surgery for stable and unstable angina pectoris and acute myocardial ischemia, 187 were followed up after the operation for 11 months on the average. Operative mortality was 11%. Among the 187 patients, 46.5% were completely relieved of angina, 36.4% showed moderate improvement, and 16.9% had no improvement in their condition. Patients with prior myocardial infarction had a substantially diminished success rate for relief of angina. Postoperative angiography in 125 patients demonstrated high correlation between clinical response and graft patency. It is concluded that direct coronary surgery provides partial or complete relief of angina pectoris in 82.9% of patients, and this response to operative treatment may be directly related to the success of the surgery ensuring patency of the graft, evidence of which is demonstrated by angiography.
