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  • Title: Neonatal screening for congenital adrenal hyperplasia: experience and results in Argentina.
    Author: Gruñieiro-Papendieck L, Chiesa A, Mendez V, Prieto L.
    Journal: J Pediatr Endocrinol Metab; 2008 Jan; 21(1):73-8. PubMed ID: 18404975.
    Abstract:
    AIM: To report the experience of the neonatal screening program for congenital adrenal hyperplasia (CAH) carried out in Buenos Aires, Argentina, from 1997 to 2006. POPULATION AND METHODS: 17-Hydroxyprogesterone (17OHP) was measured with an immunofluorometric assay in filter paper blood samples collected at neonatal maternity discharge. Filter paper blood levels <40 nmol/l were considered normal. 17OHP levels from 40-90 nmol/l triggered a new assessment to decide on a course of action. Confirmation of CAH was made with levels >90 nmol/l. This led to clinical follow up. For preterm (PT) infants, data were adjusted according to percentiles for gestational age and/or birth weight. RESULTS: From 80,436 screened newborns (46.8% girls), 8848 (11%) were PT. 15 term (T) and 3 PT infants were recalled (0.022%). Nine were confirmed as having CAH (8 T and 1 PT) (female/male: 0.8; incidence 1:8937). Mean ages of screening and treatment were 5.7 and 13 days. Only 33% of affected children were clinically suspected of having CAH prior to screening. Four boys and two girls presented salt-wasting forms and severe adrenal insufficiency crises were prevented as a result of the screening. CONCLUSIONS: Our findings confirm the benefits of CAH neonatal screening in our country with a high incidence of the classical form. Established criteria of screening and follow up allowed us to detect unrecognized affected males and females and to successfully prevent salt-wasting crises.
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