[Utilization of different iron concentrations on pregnant adolescents also supplemented with zinc and folate]. / Utilização de diferentes concentrações de ferro por adolescentes grávidas também suplementadas com zinco e ácido fólico.

The pregnant teenager is considered at nutritional risk specially due to the fact that most of them still growing and developing. Therefore the demands of pregnancy compete with those of growth causing an extra need for her and the fetus (1). Iron, zinc and folate are essential nutrients that are frequently low on the teenagers diet. Besides that there is not much specific information available about these nutrient recommendations and their interaction among each other. The data available is limited and demands more investigation. This study was conducted at a Public Maternity Hospital located at Teresina, Piauf, Brazil. The main objective of this study was to investigate the effect of different concentrations of iron supplementation (80 and 120 mg of ferrous sulfate) together with folate (250 micrograms) and zinc (5 mg) on the hemoglobin concentration and iron stores (plasma ferritin) of pregnant adolescents. The supplementation was done from the 16th to 20th weeks of gestation until delivery. The data founded proved that either 80 mg or 120 mg of iron supplements had similar effect on the improvement of hemoglobin concentration although results showed no statistical significance.

Estimulo sonoro total repetitivo: diminuicao dos resultados falso-positivos das provas nao estressantes. / Repeated sounding stimulation of the fetus: decrease in the false positive results of non-stress tests

O emprego de um estimulo sonoro fetal, repetitivo, com intensidade de 120 db, frequencia de 2000 cps e duracao de 5 seg. diminui em 60% a incidencia de resultados falso-positivos das provas nao estressantes num grupo de 20 gestantes consideradas como clinicamente normais. Os movimentos fetais referidos pelas gestantes foram significativamente de maior frequencia na etapa sonora quando comparados com a fase nao estressante (Wilcoxon 5%). O estimulo sonoro fetal firma-se como prova estressante obrigatoria na avaliacao intrauterina do concepto