[Identification of predictive factors associated with recurrent restenosis after second percutaneous transluminal coronary angioplasty].

The predictive factors of a second restenosis after repeated percutaneous transluminal coronary angioplasty (PTCA) were investigated by review of the records of 100 consecutive patients who underwent second angioplasty for restenosis of the same site. PTCA was successful in 97 (97%) of these patients, but 38 patients (39%) developed a second restenosis (recurrent restenosis group) and 59 did not (no recurrent restenosis group). The clinical, angiographic and procedural factors at the second PTCA of the two groups of patients were compared. The major risk factors (hypertension, diabetes mellitus, hyperlipidemia) and type and morphology of the lesion (eccentricity, calcification, length, bend) at repeat PTCA did not differ significantly between the recurrent restenosis and no recurrent restenosis groups. The mean intervals from the initial to the second PTCA were significantly shorter in the recurrent stenosis group than in the no recurrent restenosis group (2.1 +/- 1.1 vs 3.4 +/- 1.3 months, p < 0.001). Sixteen (76%) of 21 patients had a second restenosis at an interval between the two PTCAs of < 3 months, compared with 22 (29%) of 76 patients with an interval of > or = 3 months (p < 0.001). Patients who undergo a second angioplasty procedure within 3 months from the previous procedure at the same site have a much higher risk of recurrent restenosis and these patients may benefit from an alternative therapeutic approach.