Neonatal anemia may be detected in laboratory exams collected for other reasons in low and medium-risk neonates during the first week of life
DOI:
https://doi.org/10.11606/issn.1679-9836.v105i5e-219005Keywords:
Anemia, Infant, newborn, Hematocrit, Erythrocyte indicesAbstract
Objectives: To analyze the frequency of anemia in low and medium-risk neonates who had blood withdraw for laboratory analysis during the first week of life. Methods: A prospective cross-sectional study, between September 2021 to June 2022, that included neonates greater than 34 weeks gestational age who were born in a tertiary hospital, were clinically stable and had blood withdraw for laboratory analysis during the first week of life (< 7 days). The outcome variable was anemia, defined as hemoglobin < 13.5 g/dL. Results: A hundred and fifty-one neonates with mean gestational age of 38,1 (SD 1.7) weeks, and mean birth weight 2,983 g (SD 541) were included. Six neonates (3.9%) had anemia and all of them were < 2 days of life. Neonates with fifth-minute Apgar scores < 7 had anemia more frequently (p =0.004). Conclusion: Anemia occurred in low and medium-risk neonates in their first week of life and was more frequent when the fifth-minute Apgar was < 7. These results highlight the need to observe all the hematological parameters in laboratory exams and begin anemia treatment as soon as possible in stable neonates.
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Copyright (c) 2026 Cristina Ortiz Valete, Fernanda Negrini Delgado, Julia Sato Fernandes, Esther Angelica Luiz Ferreira, Renata Sayuri Ansai Pereira de Castro, Carolina Perez Montenegro, Maria Clara Alves Pilati, Carlos Henrique Araujo de Carvalho, Marco Otilio Duarte Rodrigues Wilde, Gleise Aparecida Moraes Costa
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