Document Detail

Mortality risk factors associated with mitral valve replacement: a survival analysis of 10 year follow-up data.
MedLine Citation:
PMID:  2025784     Owner:  NLM     Status:  MEDLINE    
The primary purpose of this study was to evaluate the long term performance of several prosthetic cardiac valves and the influence on outcome of different surgeons by following 328 patients for up to 10 years after mitral valve replacement surgery in a tertiary care centre. This type of follow-up study is faced with severe methodological difficulties, as mortality and complications after surgery can be influenced not only by preoperative clinical status but also by the competence of the operating surgeons, the type of prosthesis used, and system-related variables such as the overall quality of nursing care. The primary statistical models used were life-table analysis, logistic regression and Cox's proportional hazard regression, employing prosthesis type, surgeon and other patient- or system-specific variable as covariates. The relative performance of valve prostheses and surgeons were assessed for short and long term survival. Biologic and Omniscience valves outperformed others for short and long term survival, while Lillehei-Kaster valves performed well for short term but not long term survival. The results also suggest that the performance levels of surgeons do vary, and the choice of surgeon could be a significant risk factor in a given medical centre.
S J Lee; K S Bay
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Canadian journal of cardiology     Volume:  7     ISSN:  0828-282X     ISO Abbreviation:  Can J Cardiol     Publication Date:    1991 Jan-Feb
Date Detail:
Created Date:  1991-06-11     Completed Date:  1991-06-11     Revised Date:  2008-04-09    
Medline Journal Info:
Nlm Unique ID:  8510280     Medline TA:  Can J Cardiol     Country:  CANADA    
Other Details:
Languages:  eng     Pagination:  11-8     Citation Subset:  IM    
Ulsan Medical School, Korea.
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MeSH Terms
Chi-Square Distribution
Follow-Up Studies
Heart Valve Prosthesis / mortality*
Life Tables
Logistic Models
Middle Aged
Mitral Valve / surgery*
Proportional Hazards Models
Risk Factors
Survival Analysis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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