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  • Title: Percutaneous transluminal coronary angioplasty in unstable and stable angina pectoris: a comparison of immediate success and complications.
    Author: Ilia R, Kolansky D, Setaro J, Brennan J, Cabin H, Cleman M, Remetz M.
    Journal: Cardiology; 1992; 81(4-5):245-50. PubMed ID: 1301250.
    Abstract:
    To determine the success rate and the safety of percutaneous transluminal coronary angioplasty in patients with unstable angina pectoris (group 1) versus stable angina (group 2), we studied 299 consecutive patients who underwent coronary angioplasty of 373 consecutive lesions. Of these patients, 149 had unstable angina pectoris and dilation of 188 arteries. The success rate was high and similar in both groups (95 and 93%, respectively). The groups did not differ in regard to the lesion characteristics, vessels and number of sites dilated except for an increase in the presence of thrombus in the unstable angina group (p < 0.03). Although there was a higher incidence of coronary thrombus and more acute myocardial infarction in group 1, the major complication rate did not differ from that of group 2 and was low in both of them (3 and 2%, respectively). No deaths occurred. Six patients (3 in each group) needed urgent coronary artery bypass grafting while 3 additional patients developed acute Q-wave myocardial infarction (all of them in group 1). Thus, percutaneous transluminal coronary angioplasty is a safe and successful procedure in patients with unstable angina as well as in patients with stable angina pectoris.
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