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Birthweight of infants with congenital heart disease.

A subnormal birth weight distribution was noted in a population of infants seen during the first year of life for major congenital heart disease (CHD). When arranged according to cardiac diagnostic categories, 17 of the 21 major cardiac lesions were associated with subnormal birth weight distribution. Major extracardiac anomalies present in 19.9% of all infants appeared not to influence the birth weight distributions of either the total population of 19 of 21 cardiac lesion categories. An increased incidence (6.1%) of small-for-dates infants was observed in the study population. Extra-cardiac anomalies occurred in 28% of the small-for-dates infants. Survival to 1 year of age was 42.8% for the total population with CHD and 49.2% in the small-for-dates group.