Copyright © 1985 by the European Society of Cardiology.
© 1985 The European Society of Cardiology
Recurrence rate after successful coronary angioplasty
University Hospital Frankfurt am Main, F.R.G.
Received 6 July 1984; revised 28 December 1984; .
Abstract
Among 356 consecutive patients with successful TCA performed between October 1977 and June 1983 follow-up angiograms were performed in 333 patients (94%). A total of 439 follow-up angiograms at 1–48 (average 5.6) months after successful angioplasty were analysed.
Restenosis rate was 12% if defined as remaining widening of less than 20% compared with the situation before angioplasty. It was 16% if defined as loss of at least half of the initial gain in luminal diameter, and 17% if defined as increase from immediate post-TCA-stenosis of 
30% or the loss of at least half of the initial gain in luminal diameter. This value dropped to 15% if the subgroup of 30 patients with second TCA and of 14 patients with dilatation of an aortocoronary bypass stenosis were excluded; in both subgroups recurrence rate was higher (33% and 45%, respectively). The observed restenosis rate is less than 50% of that reported by the PTCA registry of the NHLBI. Several factors can possibly be responsible for the reduction in restenosis rate: selection of patients; technique of TCA; medical treatment during and after TCA; modification of risk factors, compliance of patients; unknown factors.
Long-term medical treatment with acetyl salicylic acid, nitrates and calcium blockers in high doses is considered to be most probably responsible for the favourable results.
Key Words: Transluminal coronary angioplasty • angiocardiography • restenosis rate
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