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Two-year clinical outcomes after coronary drug-eluting stent placement in Chinese men and women: a multicenter, prospective registry study

Authors Shrestha R, Gami S, Xu J, Xie DJ, Liu ZZ, Xu T, Ye F, Din SQ, Qian XS, Yang S, Liu YQ, Li F, Zhang AP, Chen SL

Received 11 March 2013

Accepted for publication 21 May 2013

Published 8 July 2013 Volume 2013:7 Pages 667—674

DOI https://doi.org/10.2147/PPA.S45073

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Rajiv Shrestha,1 Sandeep Gami,1 Jing Xu,2 Du-Jiang Xie,2 Zhi-Zhong Liu,2 Tian Xu,1 Fei Ye,2 Shi-Qing Din,3 Xue-Song Qian,4 Song Yang,5 Yue-Qiang Liu,6 Feng Li,7 Ai-Ping Zhang,8 Shao-Liang Chen2

1Nanjing Medical University, Nanjing, 2Nanjing First Hospital, Nanjing Medical University, Nanjing, 3Huainan Xinhua Hospital, Huainan, 4Zhangjiagang People's Hospital, Zhangjiagang, 5Yixin People's Hospital, Yixin, 6Jintan People's Hospital, Jintan, 7Huainan Oriental General Hospital, Huainan, 8Huainan People's Hospital, Huainan, People's Republic of China

Background: Previous studies have reported a discrepancy in baseline characteristics and outcomes after percutaneous coronary intervention between men and women. However, this finding has never been verified in the Chinese population. The present study analyzed two-year clinical outcomes after placement of coronary drug-eluting stents in Chinese men and women.
Methods: From January 2005 to December 2010, a total of 3804 Chinese patients (2776 men, 1028 women) who underwent drug-eluting stent implantation were studied prospectively. The primary endpoint was the composite major adverse cardiac event (MACE) rate, including myocardial infarction, cardiac death, and target vessel revascularization at two years. Stent thrombosis served as the safety endpoint. Propensity score matching was used to compare the adjusted MACE rate between the two groups.
Results: At two-year follow-up, unadjusted rates of myocardial infarction, non-ST segment elevation myocardial infarction, target vessel revascularization, and MACE were significantly different between men (6.84%, 4.6%, 13.1%, and 21.7%, respectively) and women (3.8% [P = 0.001], 2.0% [P < 0.001] 10.3% [P = 0.025], and 16.3% [P < 0.001], respectively). After propensity score matching, there were no significant differences in composite MACE and individual endpoints at two years between the genders.
Conclusion: Despite all the unfavorable risk factor clustering in women and complex coronary disease in men, the two-year clinical outcomes after coronary stent placement were comparable between Chinese women and men.

Keywords: drug-eluting stent, major adverse cardiac event, gender difference, clinical follow-up

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