Document Detail

Types and distribution of congenital heart defects associated with trisomy 21 in Singapore.
MedLine Citation:
PMID:  23437783     Owner:  NLM     Status:  Publisher    
AIM: Atrioventricular septal defect (AVSD) is widely accepted as the most common type of congenital heart defect in trisomy 21. Most of these studies, however, were conducted in Caucasian communities. The few Asian studies that had been conducted on this subject yielded different results. In the largest study of its kind in Asia, we described the distribution of types of congenital heart defects associated with trisomy 21 in Singapore. METHODS: Five hundred and eighty-eight patients with trisomy 21 born in 1996-2010, and confirmed by karyotyping, were included in the study. The diagnosis of congenital heart defects were made on echocardiography. Variables extracted for analysis were demographics (race and gender) and the types of congenital heart defects. Except for complex cyanotic heart defects, haemodynamically significant lesions were accounted for separately in cases where more than one type of congenital heart defect coexisted in a patient. RESULTS: Ventricular septal defect (VSD) (39.2%) was the most common congenital heart defect associated with trisomy 21 in our study, followed by patent ductus arteriosus (34.3%), secundum atrial septal defect (23.4%) and AVSD (15.6%). This study validates previous smaller Asian studies identifying VSD as the most common cardiac lesion associated with trisomy 21. A high proportion (25.0%) of trisomy 21 patients with tetralogy of Fallot also had AVSDs. Coarctation of the aorta was uncommon. CONCLUSION: VSD was the most common congenital heart defect seen in trisomy 21 in our study. A high proportion (25.0%) of trisomy 21 patients with tetralogy of Fallot also had AVSDs.
Monica Tan; Cunzhi Xu; Sarah Kr Sim; Adeline Lh Seow; Teng Hong Tan; Swee Chye Quek
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-26
Journal Detail:
Title:  Journal of paediatrics and child health     Volume:  -     ISSN:  1440-1754     ISO Abbreviation:  J Paediatr Child Health     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9005421     Medline TA:  J Paediatr Child Health     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013 The Authors. Journal of Paediatrics and Child Health © 2013 Paediatrics and Child Health Division (Royal Australasian College of Physicians).
Yong Loo Lin School of Medicine, Singapore.
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