Puretskiĭ M B, Abugov S A, Saakian Iu M
Russian Surgery Research Center, Russian Academy of Medical Sciences, Moscow.
Vestn Rentgenol Radiol. 2003 Jan-Feb(1):36-42.
The paper considers the impact of the length of an implanted stent on the early and late outcomes of intracoronary stenting. The study included 177 patients on a retrospective basis. They all underwent intracoronary stenting of 215 stenoses. All the patients were divided into three groups in relation to the length of an implanted segment (under 20 mm, 20-30 mm, and under 30 mm). In 16 (9.04%) of the 177 patients, for complete stenosis correction, several, but not one, stents were inserted, i.e. multiple stenting of a coronary stenting was performed. The stents were implanted by the conventional procedure. There was no significant difference in clinical and angiographic success rates between the patients of all three groups. There were no complications, such as transmural myocardial infarction and deaths in any groups. Acute stent thrombosis was noted only in 1 (1.8%). There was no significant difference in the incidence of subacute stent thrombosis between Groups 2 and 3 patients. No case of subacute thrombosis of implanted stents was noted in Group 1 patients. Thus, acute and subacute stent thromboses were observed in 4 (2.3%) patients, they being all from Groups 2 and 3. There was no significant difference in the development of restenosis between Groups 1 and 2 and Groups 2 and 3. At the same time, restenosis significantly more frequently developed in patients from Group 3 than in those from Group 1. Thus, the findings indicate that the length of a stented segment is an important factor that influence both early and late outcomes of intracoronary stenting.
本文探讨了植入支架的长度对冠状动脉内支架置入术早期和晚期疗效的影响。该研究回顾性纳入了177例患者。他们均接受了215处狭窄病变的冠状动脉内支架置入术。根据植入节段的长度（小于20 mm、20 - 30 mm和大于30 mm），将所有患者分为三组。在177例患者中的16例（9.04%）中，为完全纠正狭窄，植入了多个而非单个支架，即进行了冠状动脉支架的多重置入。支架通过常规操作植入。三组患者的临床和血管造影成功率无显著差异。所有组均未出现透壁性心肌梗死和死亡等并发症。仅1例（1.8%）出现急性支架血栓形成。第2组和第3组患者亚急性支架血栓形成的发生率无显著差异。第1组患者未观察到植入支架的亚急性血栓形成病例。因此，4例（2.3%）患者出现急性和亚急性支架血栓形成，均来自第2组和第3组。第1组与第2组以及第2组与第3组之间再狭窄的发生情况无显著差异。同时，第3组患者再狭窄的发生明显比第1组患者更频繁。因此，研究结果表明，支架置入节段的长度是影响冠状动脉内支架置入术早期和晚期疗效的重要因素。
