Congenital malformations detected in 731 autopsies of children aged 0 to 14 years

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Abstract
A retrospective study of 731 autopsies of children aged O to 14 years, performed in the Pathological Anatomy Service of the University Hospital of Porto Alegre from 1977 to 1982, was carried out to determine the frequency, type, and seriousness of congenital malformations. The subjects were divided into five age ranges: stillborn (6), 0 to 24 hours (42), 1 to 30 days (50), 1 to 12 months (24), and 1 to 14 years (9). The malformations were classified as single or multiple (presence of two or more independent defects), and their contribution to death was evaluated. Congenital malformations were detected in 131 autopsies (18%). In most cases the defects were single (91), and the most common ones involved the cardiovascular system (37) and the genitourinary system (21). In the patients with multiple malformations (40), the cardiovascular system (24) and the genitourinary system (19) were also most frequently involved. Defects of the osteoarticular system were also frequently encountered in patients with multiple defects (25), although most of them were deformations caused by mechanical factors. Proportionally, congenital malformations were most frequently detected in the 0 to 24 hour range, which also included the highest proportion of multiple defects in relation to single ones (1:1). Congenital malformations were considered responsible for death in 76% of the 131 cases (87% of the multiple defects patients and 60% of the single defect patients). We believe that the data collected in the present study may contribute to a better understanding of the role played by congenital malformations in child mortality.

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