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Comparison of drug eluting stents with bare metal stents in daily practice for bifurcation lesions in Chinese patients

摘要:

Background Recently, numerous randomized and controlled trials have demonstrated great advantages of drug eluting stents (DES) with respect to significant reduction of restenosis and recurrence of symptoms and improvement of clinical outcomes after percutaneous coronary intervention (PCI). Little is known about the comparative effects between DES and bare metal stents (BMS) for bifurcation angioplasty in the Chinese population. We compared the inpatient and 7-month follow-up outcomes between DES and BMS for the treatment of bifurcation lesions.Methods From April 2004 to October 2005, 291 Chinese patients [85.9% male, mean age (57.8± 10.4) years]underwent DES (387 lesions) and/or BMS (297 lesions) implantation for bifurcation lesions. Clinical and angiographic follow-up was performed at 7 months.Results Compared with BMS group, patients in DES group had significantly lower rates of restenosis at main branch (9.5% vs 28.7%, P < 0.001) or side branch (14.5% vs 37.0%, P < 0.001) and major adverse cardiac events (MACE) (14.0% vs 26.3%, P = 0.000). The occurrence rate of late in-stent thrombosis did not differ between the two groups in both main (0.8% vs 0, P = 0.224) and side branches (1.4% vs 0, P = 0.198). Target lesion revascularization (TLR) was less frequent in DES group for main branch (8.3% vs 21.3%, P < 0.001) and for side branch (7.6% vs 23.5%, P < 0.001). Multivariate regression analysis revealed that total stent length (OR = 1.029,P = 0.01), postprocedural in-stent minimum lumen diameter (OR = 0.476, P = 0.03) and stent type (OR = 3.988,P = 0.0001) were independent predictors of TLR for main branch. Prior history of coronary intervention (OR =2.424, P = 0.041), angulated lesion (OR = 2.337, P = 0.033), postdilation (OR = 0.267, P = 0.035) and stent type (DES vs BMS, OR = 5.459, P = 0.000) were independent predictors of TLR for side branch.Conclusion The implantation of DES may be associated with greater reduction of restenosis and TLR than BMS in bifurcations angioplasty.

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作者单位: Department of Cardiology, Cardiovascular Institute & Fuwai Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China [1]
期刊: 《中华医学杂志(英文版)》2006年119卷14期 1157-1164页 SCISCIEMEDLINEISTICCSCDCABP
分类号: R3
栏目名称: ORIGINAL ARTICLES
发布时间: 2006-08-11
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