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  • Title: The apparently declining prevalence of neural tube defect in two counties in South Wales over three decades illustrating the need for continuing action and vigilance.
    Author: Laurence KM.
    Journal: Z Kinderchir; 1985 Dec; 40 Suppl 1():58-60. PubMed ID: 2418600.
    Abstract:
    Neural tube defects, anencephaly and spina bifida (including encephalocele) have been the major malformation problem in South Wales. Births of affected offspring of residents of Mid and South Glamorgan between 1956 and June 1985 were ascertained from various sources. To these were added terminations following prenatal diagnosis and affected spontaneous abortions of 16 weeks gestation or more since 1973. Variable fluctuation in prevalence occurred between 1956 and 1965. Since then there has been an accelerating decline in the birth prevalence of NTD but especially of anencephaly in both counties. When abortions and terminations are taken into consideration the decline until 1984, though still present, is much slower and is virtually non-existent now. The need for continuing NTD pregnancy screening and prenatal diagnosis followed by selective abortion is stressed. It is suggested that genetic counselling health education to improve maternal nutrition preconceptional counselling and population folic acid supplementation should be extended to prevent these defects.
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