Application of Percutaneous Transluminal Coronary Angioplasty in Unstable Angina Pectoris

Percutaneous transluminal coronary angioplasty (PTCA) was applied to 38 coronary lesions in 32 patients (6 females, 26 males, average age 50±9 years) with unstable angina pectoris. The procedure of PTCA was based on the method of Grüntzig. We performed single angioplasty in 26 patients and complex angioplasty in 6 patients. The overall primary success was 84.2 percent. The ratios of major and minor complications were found to be 6.2 and 25 percent. Restenosis was observed in 10 percent of patients. In 20 patients with stabilized unstable angina pectoris the primary success rate was 78.2 %, the mortality and minor complication rate of PTCA were 10 % and 10 %. Restenosis occurred in none of the patients of this group. In 12 patients with nonstabilized unstable angina pectoris the primary success rate was higher (93.3 %), major and minor complication rate of PTCa were 0 % and 50 %. Restenosis ratio was found to be 25 percent. We concluded that PTCA in patients with unstable angina pectoris can be applied with an acceptable risk and high success rate.