Estado nutricional bioquímico de vitamina A de parturientes atendidas na cidade de Natal-RN

This study aimed to evaluate the vitamin A status of women who delivered in Natal/RN. A total of 795 women were enrolled in the study. Serum (n=619) and colostrum (n=656) samples were collected in the hospital after an overnight fast. Mature milk samples (n=15) were collected at the women’s house thirty days after delivery. Biochemical indicators were evaluated according to home location (capital city vs. country towns) and type of health care system (public vs. private). Vitamin A intake was assessed using a food-frequency questionnaire (FFQ) corresponding to the last trimester of pregnancy. In order to evaluate the different forms of maternal supplementation with vitamin A and their associations with biochemical markers (maternal serum and breast milk), subgroups were formed based on the type of supplementation that occurred during pregnancy: GC, F1, F2, F3 and postpartum: GM. Retinol concentrations in the biological samples were quantified by high performance liquid chromatography (HPLC). For the total sample, the mean serum retinol concentration was 41.8 ±12.9μg/dL and the prevalence of VAD was 5.3% (n=33) of women presenting retinol concentrations (0.05). Estimating the retinol supply through colostrum and mature milk, women attending the public health system did not provide the minimum vitamin A amount recommended for newborns (AI= 400μg/RAE/day), unlike women's private network, which provided. The average total dietary vitamin A intake of pregnant women was 987.1 ± 674.4 μgRAE/day, was 872.2 + 639.2 μgRAE/day for women attending the public health system and 1169.2 + 695.2 μgRAE/day for those attending the private system, evidencing a highly significant difference (p0.05). Na estimativa do fornecimento de retinol através do colostro e leite maduro, as mulheres da rede pública não forneceram vitamina A dentro da recomendação mínima para o recém-nascido (AI=400µg/RAE/dia), ao contrário das mulheres da rede privada, que forneceram. O consumo dietético médio total de vitamina A das parturientes foi de 987.1 + 674.4 µgRAE/dia, sendo 872.2 + 639.2 µgRAE/dia na da rede pública e 1169.2 + 695.2 µgRAE/dia na rede privada, com diferença altamente significativa (p