Document Detail

Influence of patient age on procedural selection in mitral valve surgery.
MedLine Citation:
PMID:  20971244     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Previous studies suggest that mitral valve replacement is comparable to repair in the elderly, and a national trend exists toward tissue valves. However, few direct comparison data are available, and this study evaluated the effects of patient age on risk-adjusted survival after mitral procedures.
METHODS: From 1986 to 2006, 2,064 patients underwent isolated primary mitral operations (±CABG). Maximal follow-up was 20 years with a median of 5 years. Valve disease etiology was the following: degenerative, 864; ischemic, 450; rheumatic, 416; endocarditis, 98; and "other," 236. Overall, 58% had repair and 39% had concomitant coronary artery bypass grafting. Survival differences were evaluated with a Cox proportional hazards model that included baseline characteristics, valve disease etiology, and choice of repair versus replacement with tissue or mechanical valves.
RESULTS: Baseline risk profiles generally were better for mechanical valves, and age was the most significant multivariable predictor of late mortality [hazard ratio = 1.4 per 10-year increment, Wald χ(2) = 32.7, p < 0.0001]. As compared with repair, risk-adjusted survival was inferior with either tissue valves [1.8, 27.6, <0.0001] or mechanical valves [1.3, 8.1, 0.0044], and no treatment interaction was observed with age (p = 0.18). At no patient age did tissue valves achieve equivalent survival to either repair or mechanical valves.
CONCLUSIONS: Mitral repair is associated with better survival than valve replacement across the spectrum of patient age. If replacement is required, mechanical valves achieve better outcomes, even in the elderly. These data suggest that tissue valves should be reserved only for patients with absolute contraindications to anticoagulation who are not amenable to repair.
Mani A Daneshmand; Carmelo A Milano; J Scott Rankin; Emily F Honeycutt; Linda K Shaw; R Duane Davis; Walter G Wolfe; Donald D Glower; Peter K Smith
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Annals of thoracic surgery     Volume:  90     ISSN:  1552-6259     ISO Abbreviation:  Ann. Thorac. Surg.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-25     Completed Date:  2010-11-10     Revised Date:  2014-11-05    
Medline Journal Info:
Nlm Unique ID:  15030100R     Medline TA:  Ann Thorac Surg     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1479-85; discussion 1485-6     Citation Subset:  AIM; IM    
Copyright Information:
Copyright © 2010 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights reserved.
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MeSH Terms
Age Factors
Heart Valve Diseases / surgery
Heart Valve Prosthesis Implantation / methods*,  mortality
Middle Aged
Mitral Valve / surgery*
Proportional Hazards Models
Grant Support
5U01-HL088953-03/HL/NHLBI NIH HHS; U01 HL088953/HL/NHLBI NIH HHS

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