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Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(3):177-184
DOI 10.1590/S0100-72032004000300002
PURPOSE: to assess the use of antenatal corticosteroid (AC) by mothers and its repercussion on the birth conditions of preterm babies at the eight university neonatal units belonging to the Brazilian Network of Neonatal Research. METHODS: an observational prospective cohort study. All 463 pregnant women with a gestational age (GA) of 23 to 34 weeks and their 514 newborn babies were evaluated during the period from August 1 to December 31, 2001. The data were obtained by maternal interview, by the analysis of the medical records and by the follow-up of the newborn infants, and analyzed statistically using chi2, Mann-Whitney and ANOVA tests and multiple logistic regression, with the level of significance set at 0.05. RESULTS: 60.1% (282/463) of the pregnant women (a variation from 12.5 to 87.3% among units) received at least one AC dose. The AC use was directly associated with the number of prenatal visits, with maternal hypertension and with the antenatal use of tocolytic agents. Babies from treated pregnant women presented higher birth weight (1,379±421 vs 1,244±543 g), longer gestational age (30.9±2.0 vs 29.5±3.5 weeks), better Apgar scores at the 1st and 5th minute, and a reduced need for intervention in the delivery room. The use of AC, the GA and a baby small for GA independently improved the birth conditions. CONCLUSIONS: at most centers, AC was administered at frequencies below the desired ones, and in 50% of cases in an inadequate manner. Treatment was applied more to mothers who received appropriate prenatal care and was associated with better birth conditions.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2004;26(3):177-184
DOI 10.1590/S0100-72032004000300002
PURPOSE: to assess the use of antenatal corticosteroid (AC) by mothers and its repercussion on the birth conditions of preterm babies at the eight university neonatal units belonging to the Brazilian Network of Neonatal Research. METHODS: an observational prospective cohort study. All 463 pregnant women with a gestational age (GA) of 23 to 34 weeks and their 514 newborn babies were evaluated during the period from August 1 to December 31, 2001. The data were obtained by maternal interview, by the analysis of the medical records and by the follow-up of the newborn infants, and analyzed statistically using chi2, Mann-Whitney and ANOVA tests and multiple logistic regression, with the level of significance set at 0.05. RESULTS: 60.1% (282/463) of the pregnant women (a variation from 12.5 to 87.3% among units) received at least one AC dose. The AC use was directly associated with the number of prenatal visits, with maternal hypertension and with the antenatal use of tocolytic agents. Babies from treated pregnant women presented higher birth weight (1,379±421 vs 1,244±543 g), longer gestational age (30.9±2.0 vs 29.5±3.5 weeks), better Apgar scores at the 1st and 5th minute, and a reduced need for intervention in the delivery room. The use of AC, the GA and a baby small for GA independently improved the birth conditions. CONCLUSIONS: at most centers, AC was administered at frequencies below the desired ones, and in 50% of cases in an inadequate manner. Treatment was applied more to mothers who received appropriate prenatal care and was associated with better birth conditions.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2002;24(8):505-510
DOI 10.1590/S0100-72032002000800002
Purpose: to evaluate if multiple courses of antenatal corticosteroids are more effective than single ones to reduce morbidity and mortality of preterm infants. Methods: retrospective study of 184 newborns with gestational age less than 34 weeks from a tertiary-level hospital in São Paulo from January 1988 to December 1998. The patients were divided into two groups: single course (n=135) - newborns whose mothers were exposed to a complete single course (2 doses of betamethasone or 4 doses of dexamethasone between 24 h and 7 days prior to delivery); multiple courses (n=49) - newborns whose mothers were exposed to two or more complete courses. The primary clinical outcomes for the two groups were: frequency of respiratory distress syndrome (RDS), intra-hospital mortality and combined neonatal morbidity (including the presence of the following: RDS, peri-intraventricular hemorrhage, bronchopulmonary dysplasia, necrotizing enterocolitis, sepsis or intra-hospital death). Numerical data were compared by Student's t test or Mann-Whitney test and categorical data by chi² or Fisher exact test, with the odds ratio and its confidence interval. Results: there were no differences between the groups that received single or multiple courses of antenatal corticosteroids in regard to the occurrence of RDS (single course: 22% and multiple course: 18%), intra-hospital mortality (single course 18% and multiple 12%) and combined neonatal morbidity (single course 62% and multiple 63%). Conclusions: multiple courses of antenatal corticosteroids did not reduce the morbidity and mortality of preterm infants. This study emphasizes the present guidelines that recommend the use of one single course of corticosteroid for fetal maturation in pregnant women at risk for preterm delivery.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2002;24(8):505-510
DOI 10.1590/S0100-72032002000800002
Purpose: to evaluate if multiple courses of antenatal corticosteroids are more effective than single ones to reduce morbidity and mortality of preterm infants. Methods: retrospective study of 184 newborns with gestational age less than 34 weeks from a tertiary-level hospital in São Paulo from January 1988 to December 1998. The patients were divided into two groups: single course (n=135) - newborns whose mothers were exposed to a complete single course (2 doses of betamethasone or 4 doses of dexamethasone between 24 h and 7 days prior to delivery); multiple courses (n=49) - newborns whose mothers were exposed to two or more complete courses. The primary clinical outcomes for the two groups were: frequency of respiratory distress syndrome (RDS), intra-hospital mortality and combined neonatal morbidity (including the presence of the following: RDS, peri-intraventricular hemorrhage, bronchopulmonary dysplasia, necrotizing enterocolitis, sepsis or intra-hospital death). Numerical data were compared by Student's t test or Mann-Whitney test and categorical data by chi² or Fisher exact test, with the odds ratio and its confidence interval. Results: there were no differences between the groups that received single or multiple courses of antenatal corticosteroids in regard to the occurrence of RDS (single course: 22% and multiple course: 18%), intra-hospital mortality (single course 18% and multiple 12%) and combined neonatal morbidity (single course 62% and multiple 63%). Conclusions: multiple courses of antenatal corticosteroids did not reduce the morbidity and mortality of preterm infants. This study emphasizes the present guidelines that recommend the use of one single course of corticosteroid for fetal maturation in pregnant women at risk for preterm delivery.