[Congenital heart defects: prevalence and course during the school years (8 to 16 years)].

In continuation of former studies regarding the first year of life and the preschool period, the prevalence and course of congenital heart disease in children during compulsory schooling has been studied. Compared with the preschool period, few cardiac defects are discovered, the prevalence up to 16 years of age being 9.9/1000. The mortality rate (2.7%) and also the rate of spontaneous normalization (4%) is significantly lower (compared to 18.7% and 21% respectively in the preschool period). Medical measures are needed less frequently, with 10 times fewer operations and 15 times fewer heart catheterizations being performed. Apart from the decline of hospital stays, checkups in the outpatient clinic also declined 3-4 times in comparison with the period between birth and school entry. School performance is very good. Only 4% of the children are unable to attend a normal school for cardiac reasons, and the percentage of pupils attending secondary school is higher than normal. In 5% of the children exercise tolerance is decreased due to the cardiac condition. In 85%, the quality of life is normal during the compulsory school period. Impairment is most often caused by additional non-cardiac malformations or very severe heart disease.