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[Type and incidence of abnormalities in 23,939 newborn infants in a 5-year period]
Insights
A study of 23,939 births found 1.6% had major congenital defects. Many defects carry significant recurrence risks, highlighting the need for prenatal diagnosis and genetic counseling.
Area of Science:
- Medical Genetics
- Pediatrics
- Obstetrics
Context:
- A 5-year survey of 23,939 consecutive births at the University of Graz.
- Data collected from 1980-1984.
Purpose:
- To determine the prevalence of major congenital malformations in newborns.
- To analyze the recurrence risks associated with various congenital defects.
- To emphasize the importance of genetic counseling and prenatal diagnosis.
Summary:
- 1.6% of newborns (394) presented with major congenital defects.
- 22% of perinatal deaths were associated with malformations.
- 80 different congenital defects were identified, with 70% having >1% recurrence risk and 15% having >10% recurrence risk.
Impact:
- Identifies significant congenital defect rates and recurrence risks.
- Underscores the critical role of genetic counseling in managing congenital anomalies.
- Informs clinical practice regarding prenatal screening and management strategies for at-risk pregnancies.
Abstract:
23,939 children born consecutively at the Department of Obstetrics and Gynaecology, University of Graz, over a 5-year period ending 31. 12. 1984 were surveyed for the presence of major malformations. 394 (1.6%) had a major congenital defect. Within the same time 392 infants died during the perinatal period, 86 of them being malformed (22%). The malformations were listed according the most likely mode of inheritance, revealing a total of 80 different congenital defects. About 70% of these malformations are associated with an increased recurrence risk (greater than 1%) and 15% carry a high risk of recurrence (greater than 10%). These facts point to the importance of prenatal diagnosis and proper genetic counselling.