[Percutaneous transluminal coronary angioplasty in patients with prior surgical revascularization]. / Angioplastia coronária transluminal percutânea em pacientes com revascularização cirúrgica prévia.

PURPOSE: To show the author's experience with percutaneous transluminal coronary angioplasty (PTCA) in patients with prior coronary bypass surgery. METHODS: Between January 1989 and January 1991, 629 PTCA in 572 patients were performed. Forty-eight had previous revascularization surgery with interval range of 4 days to 10 years. The PTCA sites were divided in three groups: A) native arterial segments, not affected by surgery (26 patients); B) native arterial segments proximal (4 patients) and distal (2 patients) to graft anastomosis; C) in the coronary vein graft (16 patients). RESULTS: The overall primary success was 78%. In groups B and C, 16 procedures were successfully dilated (72%). All failures in group C were due to unstable problems in reaching (4 patients) or crossing (2 patients) the stenosis with the balloon. There was one death in group A and another in group C. CONCLUSION: Angioplasty is an effective alternative for treatment of recurrent ischemia in patients with prior myocardial revascularization surgery and in early results are comparable to the general angioplasty population.