PerCar - Perinatal Cardiology

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A study of congenital cardiac disease in a neonatal population. The validity of echocardiography undertaken by a neonatologist

A study of congenital cardiac disease in a neonatal population – the validity of echocardiography undertaken by a neonatologist
Authors: Gregory R. Samson; Suresh R. Kumar

Source : Cardiology in the Young, December 2004, vol. 14, no. 6, pp. 585-593(9)

Publisher: Greenwich Medical Media


Objectives: To estimate the incidence of, and profile the spread of, congenital cardiac defects, and to assess the accuracy of the echocardiographic diagnosis as performed by a neonatologist. Design: Hospital-based study. Methods: All neonates meeting our criterions, specifically those with a persistent murmur 48 hours after birth, underwent an echocardiographic examination to exclude an underlying congenital cardiac defect. All scans performed by the neonatologist were videotaped and reviewed by a paediatric cardiologist. We assessed concordane according to inter-rater agreement. Results: Out of 11,085 live births, there were 83 infants with a congenital cardiac defect, giving an incidence of 7.49 per 1000 live births, with 95% confidence interval from 5.88 to 9.09. Of the infants with a murmur persisting at or greater than 48 hours after birth, who had a median age of 4.5 days, 75% had a congenital heart defect, with ventricular septal defect being the commonest, encountered in 56.7% of cases. Concordance between the neonatologist and the cardiologist was good, with Cohen’s Kappa coefficient being calculated at 0.68, and 95% confidence interval from 0.51 to 0.85. Conclusion: The incidence of congenital cardiac malformations as determined in our hospital-based study in the United Arab Emirates is similar to that described in the Gulf region and worldwide. A persistent murmur at or greater than 48 hours after birth is strongly suggestive of an underlying congenital cardiac malformation. Our experience shows that a neonatologist appropriately trained in echocardiography can perform as well as a paediatric cardiologist. Where specialist resources are limited, this allows for early diagnosis, earlier referral if necessary, and early institution of appropriate therapy.

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