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Predictors of Survival After Single-Ventricle Palliation: The Impact of Right Ventricular Dominance.
MedLine Citation:
PMID:  22440217     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: This study examined survival after surgical palliation in children with single-ventricle physiology. BACKGROUND: Contemporary surgical outcomes for the entire population of newborns undergoing single-ventricle palliation are unclear. METHODS: In a single-center review of 499 consecutive patients undergoing univentricular palliation from 1990 to 2008, predictors of mortality were determined using multivariate risk analysis, stratified for each post-operative stay and interim states. RESULTS: After 2000, the population comprised more patients with dominant right ventricle (66% vs. 36%) and hypoplastic left heart syndrome (HLHS) (47% vs. 13%). Median age at bidirectional cavopulmonary shunt (BCPS) decreased from 15 months (10 to 22 months) before 2000 to 4 months (3.3 to 9 months) thereafter. Survival rates at 1, 5, and 10 years were, respectively, 82% (95% confidence interval [CI]: 79% to 85%), 74% (95% CI: 70% to 78%), and 71% (95% CI: 67% to 75%). Throughout the study, atrioventricular valve regurgitation (hazard ratio [HR]: 1.8; p = 0.008), not having transposition (HR: 2.0; p = 0.013), and heterotaxia (HR: 2.0; p = 0.026) were predictors of mortality. The most potent risk factor was right ventricular (RV) dominance (HR: 2.2; p = 0.001) because of its impact before BCPS. HR for death in patients with RV dominance went from 2.8 (95% CI: 1.4 to 5.7; p = 0.005) before BCPS to 1.0 (95% CI: 0.5 to 2.1; p = 0.98) thereafter. Survival of patients with RV dominance, adjusted for the risk factors noted here, improved over the study period (p = 0.001). CONCLUSIONS: Considerable mortality is still observed during the first years of life among patients with single ventricle. RV dominance is the most important risk factor for death but only before BCPS.
Authors:
Yves d'Udekem; Mary Y Xu; John C Galati; Siming Lu; Ajay J Iyengar; Igor E Konstantinov; Gavin R Wheaton; James M Ramsay; Leeanne E Grigg; Johnny Millar; Michael M Cheung; Christian P Brizard
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Journal of the American College of Cardiology     Volume:  59     ISSN:  1558-3597     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8301365     Medline TA:  J Am Coll Cardiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1178-1185     Citation Subset:  -    
Copyright Information:
Copyright © 2012 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Cardiac Surgery, Royal Children's Hospital, Murdoch Children's Research Institute, and the Department of Pediatrics, University of Melbourne, Melbourne, Australia.
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