Document Detail

Association between gestational night blindness and serum retinol in mother/newborn pairs in the city of Rio de Janeiro, Brazil.
MedLine Citation:
PMID:  15811765     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Gestational night blindness (XN) is associated with increased risk of reproductive morbidity and mortality. This study investigated the prevalence of gestational XN among postpartum women treated in a public maternity hospital in the city of Rio de Janeiro, Brazil and evaluated its association with maternal and neonatal (cord blood) serum retinol concentrations. METHODS: XN was evaluated retrospectively, using an interview according to guidelines of the World Health Organization, in 222 postpartum women (< or = 6 h after delivery) after singleton births who had low obstetric risk. Serum retinol concentrations were measured according to the modified Bessey method, with a cutoff point lower than 1.05 micromol/L for inadequate serum retinol concentration. RESULTS: Prevalence of gestational XN was 18%, and inadequate maternal and cord blood serum retinol concentrations were found in 24.4% and 45.5% of samples, respectively. The results associated gestational XN with inadequate maternal serum retinol concentration (P = 0.000), and an association was observed between maternal and neonatal serum retinol concentrations (P = 0.000). A poor association was observed between maternal XN and serum levels of retinol in newborn children (P = 0.06). CONCLUSIONS: The results suggest that prevalence of gestational XN and inadequate serum retinol concentration among postpartum women and newborns is a concern, calling attention to the need for studies in other parts of Brazil. In addition, the risk of inadequate serum retinol in newborns was significantly higher among infants of postpartum women with serum retinol levels below 1.05 micromol/L. Gestational XN was associated with inadequate levels of maternal serum retinol, and the results suggest a poor relation between maternal XN and vitamin A nutritional status of newborns.
Cláudia Saunders; Rejane Andréa Ramalho; Ana Paula Pereira Thiapó de Lima; Mirian Martins Gomes; Luciana Ferreira Campos; Bianca Amaral dos Santos Silva; Alexandre Gonçalves Soares; Maria do Carmo Leal
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Nutrition (Burbank, Los Angeles County, Calif.)     Volume:  21     ISSN:  0899-9007     ISO Abbreviation:  Nutrition     Publication Date:  2005 Apr 
Date Detail:
Created Date:  2005-04-06     Completed Date:  2005-09-20     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8802712     Medline TA:  Nutrition     Country:  United States    
Other Details:
Languages:  eng     Pagination:  456-61     Citation Subset:  IM    
National School of Public Health, Oswaldo Cruz Foundation, Rio de Janeiro, Rio de Janeiro, Brazil.
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MeSH Terms
Biological Markers / blood
Brazil / epidemiology
Chi-Square Distribution
Fetal Blood
Infant, Newborn
Interviews as Topic
Night Blindness / blood,  epidemiology*
Nutritional Status / physiology
Postpartum Period / blood
Pregnancy Complications / blood,  epidemiology
Retrospective Studies
Vitamin A / blood*
Vitamin A Deficiency / epidemiology
Reg. No./Substance:
0/Biological Markers; 11103-57-4/Vitamin A

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