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THE JOURNAL OF CARDIOVASCULAR SURGERY
Rivista di Chirurgia Cardiaca, Vascolare e Toracica
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,632
The Journal of Cardiovascular Surgery 2016 Apr 08
Better midterm survival in women after transcatheter aortic valve implantation
Hisato TAKAGI, Takuya UMEMOTO ✉
Department of Cardiovascular Surgery, Shizuoka Medical Center, Shizuoka, Japan
BACKGROUND: In previous meta-analyses demonstrating better midterm overall survival in women undergoing transcatheter aortic valve implantation (TAVI), unadjusted risk and odds ratios were combined. To determine whether female gender is independently associated with better survival after TAVI, we performed a meta-analysis pooling adjusted hazard ratios (HRs) based on multivariate Cox proportional hazard regression.
METHODS: MEDLINE and EMBASE were searched through September 2015 using PubMed and OVID. Studies considered for inclusion met the following criteria: the study population was patients undergoing TAVI; and main outcomes included midterm (mean or median ≥6-month) overall survival or all-cause mortality in women and men. An unadjusted and/or adjusted HR of all-cause mortality for women versus men was abstracted from each individual study.
RESULTS: Of 1347 potentially relevant articles screened initially, 16 reports of eligible studies were identified and included. A primary meta-analysis of the 9 adjusted HRs demonstrated a significantly better midterm overall survival in women than men (6891 patients; HR, 0.80; 95% confidence interval [CI], 0.65 to 0.97; P = 0.03). A secondary meta-analysis adding 5 statistically non-significant unadjusted HR also indicated better survival in women (8645 patients; HR, 0.83; 95% CI, 0.72 to 0.96; P = 0.01). Although statistical tests for the primary meta-analysis revealed funnel plot asymmetry in favor of women, the secondary meta-analysis produced a symmetrical funnel plot.
CONCLUSIONS: Female gender may be independently associated with better midterm overall survival after TAVI.