[Immediate and long-term results of coronary stent implantation without predilatation (direct stenting) in patients with coronary heart disease].
The paper assesses the immediate and long-term results of direct stenting (without the stage of predilation) and compares with the outcomes of conventional stent implantation. A prospective study included 183 patients. All the patients were divided into two groups according to the procedure of stent implantation. In 85 (46.7%) patients, the stent was implanted without preliminary predilation of stenosis (direct stenting). These patients formed Group 1. Group 2 comprised 97 (53.3%) patients in whom the stent was placed by using the routine procedure. All the patients enrolled into the study had types A, B1, and B2 stenoses according to the ACC/AHA classification and received the conventional antiaggregatory and anticoagulant therapy. The technical success of direct stenting was 97.7%. There were no cases of stent dislocation and loss during direct stenting or expansion of a balloon and stent. Analyzing the immediate results in all the patients of the both groups showed a positive angiographic success. Thus, a primary angiographic and clinical success of direct stenting was achieved in all (100%) patients. Recurrent angina pectoris with restenosis was observed in 8 (9.4%) patients in Group 1 and in 21 (21.6%) in Group 2 (p < 0.05). Direct stenting significantly differs from the routine stent implantation in all procedure parameters. Thus, direct stenting in patients with uncomplicated stenoses is a safe and feasible procedure.
Puretskiĭ
M V
MV
Russian Surgery Research Center, Russian Academy of Medical Sciences, Moscow.
Abugov
S A
SA
Saakian
Iu M
IuM
D000328:Adult; D023921:Coronary Stenosis / Q000601:surgery*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization / Q000009:adverse effects / Q000379:methods*; D011446:Prospective Studies; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome