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Archivos de Pediatría del Uruguay

versão impressa ISSN 0004-0584versão On-line ISSN 1688-1249

Resumo

SILVA, Vanina et al. Characterization of newborns with Down syndrome. 4-year experience at the Pereira Rossell Hospital’s Neonatology Department, Montevideo, Uruguay. Arch. Pediatr. Urug. [online]. 2024, vol.95, n.1, e207.  Epub 01-Jun-2024. ISSN 0004-0584.  https://doi.org/10.31134/ap.95.1.7.

Introduction:

trisomy 21 or Down Syndrome is the most frequent chromosomal alteration, with a general incidence of 1 in 600 to 800 live newborns. Diagnosis is based on clinical suspicion and cytogenetic confirmation. Congenital heart disease and gastrointestinal malformations are frequent, as are hematological abnormalities and thyroid disorders.

Materials and Methods:

descriptive study with the objective of describing the phenotypic and genetic characteristics, malformations and associated morbidities in patients with trisomy 21 born in the neonatology service of the Pereira Rossell Hospital between July 1, 2017 and July 1, 2021.

Results:

56 patients were included, 30/56 were male, the mean gestational age was 37 weeks. A total of 17 patients were preterm. Of the patients studied, 45/56 presented free trisomy in the karyotype. Hypotonia was the most frequently observed sign on clinical examination. The most common birth defect, in 34 patients, was congenital heart disease. Among them, the most frequent defect was interatrial septal defect (CIA), followed by interventricular septal defect (VSD) and thirdly, atrioventricular canal (AV canal). Twenty-three patients with alterations in the complete blood count were found, being thrombocytopenia the most observed alteration. Nine patients were diagnosed with hypothyroidism and overall mortality during hospitalization was 1.78%.

Conclusions:

we must highlight the high prevalence of prematurity and associated congenital defects, being congenital heart disease the most frequent.

Palavras-chave : Down Syndrome; Newborn; Uruguay.

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