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. 2011 Feb;53(1):13-7.
doi: 10.1111/j.1442-200X.2010.03177.x.

Inborn errors of metabolism in a neonatology unit: impact and long-term results

Ma Luz Couce  1 , Ana Baña, Ma Dolores Bóveda, Alejandro Pérez-Muñuzuri, José Ramón Fernández-Lorenzo, José Ma Fraga
Affiliations

Inborn errors of metabolism in a neonatology unit: impact and long-term results

Ma Luz Couce et al. Pediatr Int. 2011 Feb.

Abstract

Background: Inborn errors of metabolism (IEM) have greater repercussions in neonatology units. The goal of our study was to evaluate the impact of IEM in a neonatology unit and the outcome of these neonates.

Methods: All patients with IEM admitted in our unit were evaluated during an 8-year period for specific diagnosis, clinical features, therapy and long-term neurodevelopment.

Results: The study group was comprised of 31 infants, 18 of which required admission to the neonatal intensive care unit (NICU) (1.63% of income) due to severe symptoms. Twenty-two of the 31 had an earlier diagnosis and treatment due to expanded newborn screening, made from the third day of life. The most frequent diagnosis in the NICU, representing 66.66% (12/18), was diseases that cause an endogenous intoxication. Despite the diagnosis by tandem mass spectrometry, many of these patients had severe clinical symptoms prior to the screening results. Aggressive support was often necessary (extracorporeal removal therapy, mechanical ventilation). Death occurred generally in the first year of life (5/6). The death rate in the NICU was 10.3%. The survivors presented higher scores on the Psychomotor Development Index if the diagnosis of the disease was either made or helped by screening. This also depends on the type of disease.

Conclusion: Earlier diagnosis by expanded newborn screening and earlier treatment is essential in order to be able to prevent neurological sequelae.

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