Document Detail

Predictors of outcome of arterial switch operation for complex D-transposition.
MedLine Citation:
PMID:  18442569     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Overall mortality and reoperation risk for the arterial switch operation (ASO) for D-transposition of the great arteries (D-TGA) is low. D-TGA with ventricular septal defect (VSD) and aortic arch obstruction (AAO) is a higher risk subgroup in which we sought risk factors for mortality and reoperation after ASO. METHODS: Echocardiograms of 74 patients who underwent ASO, VSD, and arch repair for D-TGA, VSD and AAO were reviewed; the reoperation analysis considered the 65 survivors. Pre-ASO clinical and anatomic characteristics were compared between survivors and nonsurvivors; patients who required (R) and did not require (NR) reoperation. RESULTS: Distal transverse aortic arch (TrAo) z score equal to -2.5 or less, triscuspid valve z score less than 0, repaired muscular VSD, and circulatory arrest time were significant predictors of mortality. When stratified for circulatory arrest time below 60 minutes, small distal transverse aortic arch and tricuspid valve remained significant predictors of mortality. Mean aortic annulus size was smaller in R than NR (p = 0.048). Left coronary artery arising posteriorly was associated with a reoperation hazard ratio of 5.2 (p = 0.022). CONCLUSIONS: Preoperative anatomy was associated with death and reoperation post-ASO. Small TrAo and TV were risk factors for mortality in univariate analysis, and remained significant in the subset of patients with short circulatory arrest times, suggesting that even when controlling for technical factors, anatomic risk factors predict mortality. Small aortic annulus and posterior left circumflex artery origin were associated with reoperation. Patients with D-TGA, VSD, and AAO constitute a higher risk group, which includes patients who may be marginal candidates for two-ventricle repair.
Danielle Gottlieb; Marcy L Schwartz; Kara Bischoff; Kimberlee Gauvreau; John E Mayer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Annals of thoracic surgery     Volume:  85     ISSN:  1552-6259     ISO Abbreviation:  Ann. Thorac. Surg.     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-04-29     Completed Date:  2008-05-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  15030100R     Medline TA:  Ann Thorac Surg     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1698-702; discussion 1702-3     Citation Subset:  AIM; IM    
Department of Cardiology and Cardiovascular Surgery, Children's Hospital Boston, Boston, Massachusetts, USA.
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MeSH Terms
Aortic Coarctation / mortality,  surgery,  ultrasonography
Cause of Death
Child, Preschool
Follow-Up Studies
Heart Septal Defects, Ventricular / mortality,  surgery,  ultrasonography
Infant, Newborn
Postoperative Complications / etiology*,  mortality,  surgery,  ultrasonography
Retrospective Studies
Risk Factors
Survival Analysis
Transposition of Great Vessels / mortality,  surgery*,  ultrasonography

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