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  • Title: Percutaneous transluminal coronary angioplasty after previous coronary artery bypass surgery.
    Author: Corbelli J, Franco I, Hollman J, Simpfendorfer C, Galan K.
    Journal: Am J Cardiol; 1985 Sep 01; 56(7):398-403. PubMed ID: 2931013.
    Abstract:
    To improve symptomatic status and avoid repeat coronary artery bypass graft surgery (CABG), 115 lesions were approached for transluminal coronary angioplasty (PTCA) in 94 patients (82 men, 12 women) with angina pectoris and prior CABG at a mean of 60 months (range 4 to 192) after CABG. Fifteen patients were in Canadian Cardiovascular Society functional class I, 32 were in class II, 31 were in class III, and 16 were in class IV. Patients were 37 to 76 years old (mean 57). PTCA was successful (at least a 40% reduction in stenosis diameter and improvement in symptomatic status) in 83 patients (88%) and 103 (90%) lesions. Mean stenosis was reduced from 80 +/- 14% to 20 +/- 16% (mean +/- standard deviation) and mean pressure gradient from 41 +/- 7 mm Hg to 14 +/- 6 mm Hg. Seven patients had lesions that could not be crossed for technical reasons and these patients underwent non-emergency CABG. Four patients required emergency CABG after PTCA; 1 patient subsequently died and 2 survived acute myocardial infarction. One patient had a femoral artery laceration, which required surgical repair. At a mean follow-up of 8 +/- 4 months, 63 patients (76%) with initially successful results were free of angina or in improved condition. Of the remaining 20 patients, 18 consented to repeat coronary angiography. Four patients did not have restenosis. Of the 14 patients with documented restenosis, 5 underwent successful repeat PTCA, 5 had repeat CABG, and 4 were treated medically. Thus, when coronary anatomy is suitable, PTCA is an effective alternative to reoperation in symptomatic patients with prior CABG.
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