[Immediate and 6-month results of balloon angioplasty in the treatment of intra-stent restenosis in symptomatic patients].
The aim of this prospective study was to assess the clinical and angiographic immediate and 6 month results of balloon angioplasty in intra-stent restenosis. Quantitative angiographic analysis (Philips DCI) was performed before and after implantation of the stent, before and after angioplasty for restenosis and at the 6 month control procedure. The study included 59 patients with 65 stents with an intra-stent restenosis. Restenosis was diffuse (10 mm) in 70% of cases, and focal in 30% of cases. The length of the stent was 16 +/- 7 mm (Palmaz-Schatz: 58%). The diameter of the balloon used for angioplasty was 2.9 +/- 0.4 mm and the maximal inflation pressure was 10 +/- 3 bars. The success rate was 100% with no complications. Control coronary angiography was performed in 92% of patients after an average of 5.9 months. The angiographic restenosis rate was 54% and revascularisation was required in 21 patients (36%). The restenosis rate was higher in cases of diffuse intra-stent restenosis (64%) than in focal restenosis (29%), p = 0.02. The authors conclude that balloon angioplasty for intra-stent restenosis is safe and carries a high success rate. Nevertheless, the angiographic restenosis rate at 6 months seems to be higher, especially in cases of diffuse restenosis.
Eltchaninoff
H
H
Service de cardiologie, hôpital Charles Nicolle, Université de Rouen.
Koning
R
R
Tron
C
C
Cribier
A
A
D015906:Angioplasty, Balloon, Coronary; D017023:Coronary Angiography; D005260:Female; D005500:Follow-Up Studies; D006083:Graft Occlusion, Vascular; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D019736:Prostheses and Implants; D015607:Stents; D016896:Treatment Outcome