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Revista Brasileira de Ginecologia e Obstetrícia. 2012;34(8):381-385
DOI 10.1590/S0100-72032012000800007
PURPOSE: To assess perinatal factors associated with term newborns with pH<7.1 in the umbilical artery and 5th min Apgar score<7,0. METHODS: Retrospective case-control study carried out after reviewing the medical records of all births from September/1998 to March/2008, that occurred at the General Hospital of Caxias do Sul. The inclusion criterion was term newborns who presented a 5th min Apgar score <7.0 and umbilical artery pH<7.10. In the univariate analysis, we used the Student's t-test and the Mann-Whitney test for continuous variables, the c² test for dichotomous variables and risk estimation by the odds ratio (OR). The level of significance was set at p<0.05. RESULTS: Of a total of 15,495 consecutive births, 25 term neonates (0.16%) had pH<7.1 in the umbilical artery and a 5th min Apgar score <7.0. Breech presentation (OR=12.9, p<0.005), cesarean section (OR=3.5, p<0.01) and modified intrapartum cardiotocography (OR=7.8, p<0.02) presented a significant association with the acidosis event. Among the fetal characteristics, need for hospitalization in the neonatal intensive care unit (OR=79.7, p <0.0001), need for resuscitation (OR=12.2, p <0.0001) and base deficit were associated with the event (15.0 versus -4.5, p<0.0001). CONCLUSION: Low Apgar score at the 5th min of life associated with pH<7.1 in the umbilical artery can predict adverse neonatal outcomes.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2012;34(8):381-385
DOI 10.1590/S0100-72032012000800007
PURPOSE: To assess perinatal factors associated with term newborns with pH<7.1 in the umbilical artery and 5th min Apgar score<7,0. METHODS: Retrospective case-control study carried out after reviewing the medical records of all births from September/1998 to March/2008, that occurred at the General Hospital of Caxias do Sul. The inclusion criterion was term newborns who presented a 5th min Apgar score <7.0 and umbilical artery pH<7.10. In the univariate analysis, we used the Student's t-test and the Mann-Whitney test for continuous variables, the c² test for dichotomous variables and risk estimation by the odds ratio (OR). The level of significance was set at p<0.05. RESULTS: Of a total of 15,495 consecutive births, 25 term neonates (0.16%) had pH<7.1 in the umbilical artery and a 5th min Apgar score <7.0. Breech presentation (OR=12.9, p<0.005), cesarean section (OR=3.5, p<0.01) and modified intrapartum cardiotocography (OR=7.8, p<0.02) presented a significant association with the acidosis event. Among the fetal characteristics, need for hospitalization in the neonatal intensive care unit (OR=79.7, p <0.0001), need for resuscitation (OR=12.2, p <0.0001) and base deficit were associated with the event (15.0 versus -4.5, p<0.0001). CONCLUSION: Low Apgar score at the 5th min of life associated with pH<7.1 in the umbilical artery can predict adverse neonatal outcomes.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(4):232-237
DOI 10.1590/S0100-72032006000400005
PURPOSE: to identify maternal and perinatal factors related to neonates with birthweight >4,000 g. METHODS: cross-section cohort study with 411 consecutive cases of fetal macrosomia (FM) which occurred from March 1998 to March 2005. Data were compared to 7,349 cases of fetal birthweight >2,500 and <3,999 g which occurred in the same period. Maternal variables (maternal age, parity, diabetes, previous cesarean section, meconium-stained amniotic fluid, cephalopelvic disproportion, main cesarean section indications) and perinatal variables (birth injury, <7 1-min and 5-min Apgar score, fetal and early neonatal mortality range, need of neonatal intensive care unit) were analyzed. For statistical analysis the chi2 test with Yates correction and Student's t test were used with the level of significance set at 5%. RESULTS: FM was significantly associated with older mothers, more parous and <7 1-min Apgar score (p<0.05; OR=1.8; 95% CI: 1,4-2.5) and <7 5-min Apgar score (p<0,05; OR=2.3; 95% CI: 1.3-4,1), diabetes mellitus (p<0.05; OR=4.2; 95% CI: 2.7-6.4), meconium-stained amniotic fluid (p<0.02; OR=1.3; 95% CI: 1.0-1.7), need of neonatal intensive care unit (p<0,05; OR=2.0; 95% CI: 1.5-2.7), early neonatal mortality (p<0,05; OR = 2.7; 95% CI: 1.0-6.7), cesarean section (p < 0.05; OR = 2.03; 95% CI: 1,6-2,5) and cephalopelvic disproportion (p < 0.05;OR = 2.8; 95% CI: 1.6-4,8). There was no statistical difference between birth injury and fetal mortality range. In the FM group the main cesarean section indications were repeat cesarean sections (11.9%) and cephalopelvic disproportion (8.6%); in the normal birthweight group, repeat cesareans (8.3%) and fetal distress during labor (3.9%). CONCLUSIONS: in spite of the characteristic limitations of a retrospective evaluation, the analysis demonstrated which complications were associated with large fetal size, being useful in obstetric handling of patients with a diagnosis of extreme fetal growth. FM remains an obstetric problem of difficult solution, associated with important maternal and perinatal health problems, due to the significant observed rates of maternal and perinatal morbidity and mortality in developed and developing countries.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2006;28(4):232-237
DOI 10.1590/S0100-72032006000400005
PURPOSE: to identify maternal and perinatal factors related to neonates with birthweight >4,000 g. METHODS: cross-section cohort study with 411 consecutive cases of fetal macrosomia (FM) which occurred from March 1998 to March 2005. Data were compared to 7,349 cases of fetal birthweight >2,500 and <3,999 g which occurred in the same period. Maternal variables (maternal age, parity, diabetes, previous cesarean section, meconium-stained amniotic fluid, cephalopelvic disproportion, main cesarean section indications) and perinatal variables (birth injury, <7 1-min and 5-min Apgar score, fetal and early neonatal mortality range, need of neonatal intensive care unit) were analyzed. For statistical analysis the chi2 test with Yates correction and Student's t test were used with the level of significance set at 5%. RESULTS: FM was significantly associated with older mothers, more parous and <7 1-min Apgar score (p<0.05; OR=1.8; 95% CI: 1,4-2.5) and <7 5-min Apgar score (p<0,05; OR=2.3; 95% CI: 1.3-4,1), diabetes mellitus (p<0.05; OR=4.2; 95% CI: 2.7-6.4), meconium-stained amniotic fluid (p<0.02; OR=1.3; 95% CI: 1.0-1.7), need of neonatal intensive care unit (p<0,05; OR=2.0; 95% CI: 1.5-2.7), early neonatal mortality (p<0,05; OR = 2.7; 95% CI: 1.0-6.7), cesarean section (p < 0.05; OR = 2.03; 95% CI: 1,6-2,5) and cephalopelvic disproportion (p < 0.05;OR = 2.8; 95% CI: 1.6-4,8). There was no statistical difference between birth injury and fetal mortality range. In the FM group the main cesarean section indications were repeat cesarean sections (11.9%) and cephalopelvic disproportion (8.6%); in the normal birthweight group, repeat cesareans (8.3%) and fetal distress during labor (3.9%). CONCLUSIONS: in spite of the characteristic limitations of a retrospective evaluation, the analysis demonstrated which complications were associated with large fetal size, being useful in obstetric handling of patients with a diagnosis of extreme fetal growth. FM remains an obstetric problem of difficult solution, associated with important maternal and perinatal health problems, due to the significant observed rates of maternal and perinatal morbidity and mortality in developed and developing countries.