A strategy to avoid missed cases in a Brazilian neonatal TSH screening program for congenital hypothyroidism.
J Pediatr Endocrinol Metab
; 22(5): 443-8, 2009 May.
Article
em En
| MEDLINE
| ID: mdl-19618663
ABSTRACT
BACKGROUND:
There have been reports of patients with primary hypothyroidism not identified by TSH measurement due to a presumably delayed rise in serum TSH. However, there are no data on the incidence of false negative results in neonatal screening programs employing primary TSH assay for diagnosis.AIM:
To investigate the incidence of false negative results in a neonatal screening program using the primary TSH approach and evaluate a strategy to avoid misdiagnosis. INFANTS ANDMETHODS:
190 newborns, with initial TSH > 15.0 IU/l and < 20.0 IU/l (screening cutoff). These infants were submitted to a second TSH measurement around 30 days after the first screening.RESULTS:
Thirty days after the first screening, four of the 190 infants (2.1%) remained with TSH levels around the cut-off screening level or higher. Of these four patients, three had an absence of thyroid gland on ultrasonography, with a final diagnosis of dysgenesis. The fourth patient had a normal shaped gland in its usual location by ultrasonography, with an outcome of transitory congenital hypothyroidism.CONCLUSIONS:
The incidence of missed congenital hypothyroidism diagnoses in this neonatal screening program based on the TSH approach was low and acceptable. Nevertheless, with the proposed strategy, the risk of false negative results can be reduced without significant impact on the overall cost of the screening program.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Tireotropina
/
Triagem Neonatal
/
Hipotireoidismo Congênito
/
Disgenesia da Tireoide
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
/
Evaluation_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Humans
/
Newborn
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
J Pediatr Endocrinol Metab
Assunto da revista:
ENDOCRINOLOGIA
/
PEDIATRIA
Ano de publicação:
2009
Tipo de documento:
Article
País de afiliação:
Brasil