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Atrioventricular septal defects among infants in Europe: a population-based study of prevalence, associated anomalies, and survival

  • Nikolas Christensen (a1), Helle Andersen (a1), Ester Garne (a2), Diana Wellesley (a3), Marie-Claude Addor (a4), Martin Haeusler (a5), Babak Khoshnood (a6), Carmel Mullaney (a7), Judith Rankin (a8) and David Tucker (a9)...

Abstract

Objective

To describe the epidemiology of chromosomal and non-chromosomal cases of atrioventricular septal defects in Europe.

Methods

Data were obtained from EUROCAT, a European network of population-based registries collecting data on congenital anomalies. Data from 13 registries for the period 2000–2008 were included.

Results

There was a total of 993 cases of atrioventricular septal defects, with a total prevalence of 5.3 per 10,000 births (95% confidence interval 4.1 to 6.5). Of the total cases, 250 were isolated cardiac lesions, 583 were chromosomal cases, 79 had multiple anomalies, 58 had heterotaxia sequence, and 23 had a monogenic syndrome. The total prevalence of chromosomal cases was 3.1 per 10,000 (95% confidence interval 1.9 to 4.3), with a large variation between registers. Of the 993 cases, 639 cases were live births, 45 were stillbirths, and 309 were terminations of pregnancy owing to foetal anomaly. Among the groups, additional associated cardiac anomalies were most frequent in heterotaxia cases (38%) and least frequent in chromosomal cases (8%). Coarctation of the aorta was the most common associated cardiac defect. The 1-week survival rate for live births was 94%.

Conclusion

Of all cases, three-quarters were associated with other anomalies, both chromosomal and non-chromosomal. For infants with atrioventricular septal defects and no chromosomal anomalies, cardiac defects were often more complex compared with infants with atrioventricular septal defects and a chromosomal anomaly. Clinical outcomes for atrioventricular septal defects varied between regions. The proportion of termination of pregnancy for foetal anomaly was higher for cases with multiple anomalies, chromosomal anomalies, and heterotaxia sequence.

Copyright

Corresponding author

Correspondence to: H. Andersen, MD, Hans Christian Andersen Children's Hospital, Odense University Hospital, Sdr Boulevard 29, DK-5000, Odense C, Denmark. Tel: +45 6541 1519; Fax: +45 6591 1862; E-mail: helle.a@ouh.regionsyddanmark.dk

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