Trabalhos Originais Archives - Page 2 of 51 - Revista Brasileira de Ginecologia e Obstetrícia
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(8):511-517
DOI 10.1590/S0100-72032000000800007
Purpose: to demonstrate the types of fetal malformations in multiple pregnancy and their relation to chorionicity. Methods: one hundred and sixty-nine multiple pregnancies were evaluated. In all cases prenatal ultrasound examination was performed during antenatal care. Chorionicity was defined by: first trimester ultrasound evaluation (absence of lambda sign); presence of two separate placentas; different fetal sex; pathological placental examination. Results: twenty-four (14.2%) fetal malformations were observed, 22 in twin and 2 in triplet pregnancy. In the group with fetal malformations 13 were monochorionic, 4 dichorionic and in 5 the chorionicity was unknown. Some malformations were unique to twins (conjoined twins n = 5, acardiac twin n = 3) and others were nonunique to twins. The gestational age at delivery was lower in the group with fetal malformations compared to the group without fetal malformations. Conclusion: the majority of malformations occurred in the monochorionic pregnancies. In multiple pregnancies early determination of chorionicity is helpful to establish the prognosis and to plan the management of pregnancy.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(8):511-517
DOI 10.1590/S0100-72032000000800007
Purpose: to demonstrate the types of fetal malformations in multiple pregnancy and their relation to chorionicity. Methods: one hundred and sixty-nine multiple pregnancies were evaluated. In all cases prenatal ultrasound examination was performed during antenatal care. Chorionicity was defined by: first trimester ultrasound evaluation (absence of lambda sign); presence of two separate placentas; different fetal sex; pathological placental examination. Results: twenty-four (14.2%) fetal malformations were observed, 22 in twin and 2 in triplet pregnancy. In the group with fetal malformations 13 were monochorionic, 4 dichorionic and in 5 the chorionicity was unknown. Some malformations were unique to twins (conjoined twins n = 5, acardiac twin n = 3) and others were nonunique to twins. The gestational age at delivery was lower in the group with fetal malformations compared to the group without fetal malformations. Conclusion: the majority of malformations occurred in the monochorionic pregnancies. In multiple pregnancies early determination of chorionicity is helpful to establish the prognosis and to plan the management of pregnancy.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(8):519-523
DOI 10.1590/S0100-72032000000800008
Purpose: to evaluate the results of assistance to breech deliveries. Methods: this was a descriptive study where 160 pregnant women with breech presentation and live newborns were analyzed. They were divided into two groups according to the route of delivery. Clinical data concerning labor, delivery and newborns were studied. For statistical analysis vaginal deliveries were compared with cesarean sections using mean and standard deviation estimates, Student's t, Mann-Whitney and chi² tests. Results: the global cesarean section rate was 81.2%. The gestational age and the weight of the newborns were significantly lower in the vaginal delivery group. Prematurity and low birth weight were significantly associated with vaginal delivery. Only 14 newborns had an Apgar score below 7 at the fifth minute, almost 60% of them in the vaginal delivery group. Conclusions: this population presented a high cesarean section rate and also high perinatal morbidity, prematurity and low birth weight in the vaginal delivery group. These findings do not allow conclusions regarding the real relationships among breech presentation, route of delivery and perinatal outcomes. The control regarding gestational age and parity, besides a random decision on the route of delivery, is necessary for future conclusions.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(8):519-523
DOI 10.1590/S0100-72032000000800008
Purpose: to evaluate the results of assistance to breech deliveries. Methods: this was a descriptive study where 160 pregnant women with breech presentation and live newborns were analyzed. They were divided into two groups according to the route of delivery. Clinical data concerning labor, delivery and newborns were studied. For statistical analysis vaginal deliveries were compared with cesarean sections using mean and standard deviation estimates, Student's t, Mann-Whitney and chi² tests. Results: the global cesarean section rate was 81.2%. The gestational age and the weight of the newborns were significantly lower in the vaginal delivery group. Prematurity and low birth weight were significantly associated with vaginal delivery. Only 14 newborns had an Apgar score below 7 at the fifth minute, almost 60% of them in the vaginal delivery group. Conclusions: this population presented a high cesarean section rate and also high perinatal morbidity, prematurity and low birth weight in the vaginal delivery group. These findings do not allow conclusions regarding the real relationships among breech presentation, route of delivery and perinatal outcomes. The control regarding gestational age and parity, besides a random decision on the route of delivery, is necessary for future conclusions.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(9):543-549
DOI 10.1590/S0100-72032000000900002
Purpose: to compare the efficiency between magnesium sulfate and phenytoin in the control of convulsions in patients with eclampsia and to evaluate the effects of magnesium sulfate and phenytoin on the maternal and perinatal prognosis in patients with eclampsia. Methods: this is a prospective, randomized and controlled study in which the results obtained with the use of anticonvulsive treatment in 77 women with eclampsia, treated with either magnesium sulfate or phenytoin, were analyzed comparatively. The drugs which were used in both therapeutic schemes were distributed in a one to one ratio, in randomly numbered boxes which presented similar characteristics. When a patient was admitted, a box was opened and its contents were given to the patient. Results: in the group whose patients were treated with magnesium sulfate, 19.5% had recurrent convulsions while in the group whose patients used phenytoin, 36.1% had new crises (p<0,05). The patients who were treated with magnesium sulfate showed a greater prevalence of postpartum hemorrhage (14,7%) than those to whom phenytoin was administered (2.7%) (p<0.05). In relation to the newborns, 17.0% of the group from mothers treated with magnesium sulfate presented respiratory distress as opposed to the group of newborns from mothers treated with phenytoin (11.8%), (p> 0,05). Conclusion: magnesium sulfate is shown to be more efficient than phenytoin in the control and the prevention of convulsions in patients with eclampsia. However, its utilization showed a higher prevalence of postpartum hemorrhage and respiratory distress. Phenytoin should be used in cases where the use of magnesium sulfate is contraindicated.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(9):543-549
DOI 10.1590/S0100-72032000000900002
Purpose: to compare the efficiency between magnesium sulfate and phenytoin in the control of convulsions in patients with eclampsia and to evaluate the effects of magnesium sulfate and phenytoin on the maternal and perinatal prognosis in patients with eclampsia. Methods: this is a prospective, randomized and controlled study in which the results obtained with the use of anticonvulsive treatment in 77 women with eclampsia, treated with either magnesium sulfate or phenytoin, were analyzed comparatively. The drugs which were used in both therapeutic schemes were distributed in a one to one ratio, in randomly numbered boxes which presented similar characteristics. When a patient was admitted, a box was opened and its contents were given to the patient. Results: in the group whose patients were treated with magnesium sulfate, 19.5% had recurrent convulsions while in the group whose patients used phenytoin, 36.1% had new crises (p<0,05). The patients who were treated with magnesium sulfate showed a greater prevalence of postpartum hemorrhage (14,7%) than those to whom phenytoin was administered (2.7%) (p<0.05). In relation to the newborns, 17.0% of the group from mothers treated with magnesium sulfate presented respiratory distress as opposed to the group of newborns from mothers treated with phenytoin (11.8%), (p> 0,05). Conclusion: magnesium sulfate is shown to be more efficient than phenytoin in the control and the prevention of convulsions in patients with eclampsia. However, its utilization showed a higher prevalence of postpartum hemorrhage and respiratory distress. Phenytoin should be used in cases where the use of magnesium sulfate is contraindicated.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(9):579-584
DOI 10.1590/S0100-72032000000900007
Purpose: to evaluate the avoidable mortality among women in reproductive age, living in Campinas, SP, comparing two five-year periods: 1985-89 and 1990-94. Methods: death certificates of 3.086 women aged 10 to 49 years were studied, representing the total number of deaths during the period from January 1985 through December 1994. The criteria for avoidance were applied to these deaths using preventive, sanitary, early diagnosis and treatment, and mixed measures. The deaths were also classified as: with hardly avoidable causes, not well-defined causes and other causes. The specific mortality coefficient for each period of five years and the ratio between these coefficients were calculated. Results: there was a 20% increase in the avoidable mortality rate from the first to the second period. The main failure was observed among the group of avoidable causes by preventive and sanitary measures. The main increase in death causes by preventive measures resulted from AIDS. Among the causes of death avoidable by mixed measures, the increase of 50% in maternal mortality caused by abortion, as well as causes due to violence specially homicides, are emphasized. Conclusion: there was an increase in the proportion of avoidable death causes. Measures to prevent AIDS, abortion and to reduce violent deaths, specially homicides, should be political and social priorities in our Country.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(9):579-584
DOI 10.1590/S0100-72032000000900007
Purpose: to evaluate the avoidable mortality among women in reproductive age, living in Campinas, SP, comparing two five-year periods: 1985-89 and 1990-94. Methods: death certificates of 3.086 women aged 10 to 49 years were studied, representing the total number of deaths during the period from January 1985 through December 1994. The criteria for avoidance were applied to these deaths using preventive, sanitary, early diagnosis and treatment, and mixed measures. The deaths were also classified as: with hardly avoidable causes, not well-defined causes and other causes. The specific mortality coefficient for each period of five years and the ratio between these coefficients were calculated. Results: there was a 20% increase in the avoidable mortality rate from the first to the second period. The main failure was observed among the group of avoidable causes by preventive and sanitary measures. The main increase in death causes by preventive measures resulted from AIDS. Among the causes of death avoidable by mixed measures, the increase of 50% in maternal mortality caused by abortion, as well as causes due to violence specially homicides, are emphasized. Conclusion: there was an increase in the proportion of avoidable death causes. Measures to prevent AIDS, abortion and to reduce violent deaths, specially homicides, should be political and social priorities in our Country.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):103-107
DOI 10.1590/S0100-72032003000200005
PURPOSE: to study the causes and associated factors of fetal death. METHODS: epidemiological descriptive study, composed of 190 cases of fetal loss amongst 11,825 pregnant women that gave birth at the two only hospitals (Casa de Saúde Divino Espírito Santo and Hospital Nossa Senhora Auxiliadora) of Caratinga City, in the State of Minas Gerais, Brazil, in the period from January 1, 1995 to April 30, 2000. The variables were the number of pregnancies, the timing of the pregnant women at the time of hospitalization, the occurrence of fetal death in relation to delivery and the cause of fetal death. Since there were no comparative groups, tables, percentages and arithmetical means were applied, following the guidelines of the Course of Statistics, of the "Universidade Federal de São Paulo". RESULTS: among the 189 pregnant women with fetal death, 77 were primigravidal and 76 had already been pregnant 2 to 5 times. The gestational age in 113 women was from 20 to 37 weeks. In relation to parturition, the fetal loss occurred during the antepartum period in 164 of 190 dead fetuses. The most frequently noticed death causes were: abruptio placentae in 35 cases, fetal anomaly in 12 cases, and hypertension syndrome in 8 cases. Nervertheless, there was no explanation for the etiology of 117 cases of fetal death. CONCLUSION: stillbirth has frequently been observed among the primigravidae (40.74%), in preterm period (59.79%), and in the antepartum period (86.31%). Among fetal death causes, the most frequent was a abruptio placentae (18.42%), and in 61.57% of the cases the fetal death could not be explained.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):103-107
DOI 10.1590/S0100-72032003000200005
PURPOSE: to study the causes and associated factors of fetal death. METHODS: epidemiological descriptive study, composed of 190 cases of fetal loss amongst 11,825 pregnant women that gave birth at the two only hospitals (Casa de Saúde Divino Espírito Santo and Hospital Nossa Senhora Auxiliadora) of Caratinga City, in the State of Minas Gerais, Brazil, in the period from January 1, 1995 to April 30, 2000. The variables were the number of pregnancies, the timing of the pregnant women at the time of hospitalization, the occurrence of fetal death in relation to delivery and the cause of fetal death. Since there were no comparative groups, tables, percentages and arithmetical means were applied, following the guidelines of the Course of Statistics, of the "Universidade Federal de São Paulo". RESULTS: among the 189 pregnant women with fetal death, 77 were primigravidal and 76 had already been pregnant 2 to 5 times. The gestational age in 113 women was from 20 to 37 weeks. In relation to parturition, the fetal loss occurred during the antepartum period in 164 of 190 dead fetuses. The most frequently noticed death causes were: abruptio placentae in 35 cases, fetal anomaly in 12 cases, and hypertension syndrome in 8 cases. Nervertheless, there was no explanation for the etiology of 117 cases of fetal death. CONCLUSION: stillbirth has frequently been observed among the primigravidae (40.74%), in preterm period (59.79%), and in the antepartum period (86.31%). Among fetal death causes, the most frequent was a abruptio placentae (18.42%), and in 61.57% of the cases the fetal death could not be explained.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):109-114
DOI 10.1590/S0100-72032003000200006
PURPOSE: to evaluate maternal and perinatal outcomes of premature rupture of membranes up to the 26th week of gestation. METHODS: retrospective analysis of the cases of premature rupture of membranes up to the 26th week of gestation, without signs of labor or treatment for this condition before admission, followed up at the Obstetric Pathology Infirmary of the "Maternidade Escola Assis Chateaubriand", Federal University of Ceará, from January 1994 to December 1999. The cases with gestational age less than 22 weeks and birth weight lower than 500 g were excluded. Premature rupture of membranes was confirmed by sterile speculum examination. In doubt, amniotic fluid crystallization test and pH determination were performed. All pregnant women underwent ultrasound examination to determine gestational age and amniotic fluid volume. Data concerning the result of gestation and consequences for the mother, fetus and neonate were analyzed. RESULTS: a total of 29 cases of premature rupture of membranes fulfilled inclusion criteria. The mean gestational age at rupture of membranes was 22 weeks. The mean duration of the latency period was 21.7 days. There Were 22 spontaneous vaginal and 3 induced deliveries, besides 4 cesarean sections. In six pregnant women there were signs of infection before labor. Antibiotics were administered in 37.9% of the cases and corticosteroids in 6.9%. No patient underwent tocolysis. There were 3 fetal and 25 neonatal deaths. Only one infant survived. This child remained at the neonatal care unit for 19 days due to infection and respiratory distress syndrome. There was no maternal death. CONCLUSION: the premature rupture of membranes up to the 26th week of gestation has been a fatal discase for fetuses and newborns in our institution.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):109-114
DOI 10.1590/S0100-72032003000200006
PURPOSE: to evaluate maternal and perinatal outcomes of premature rupture of membranes up to the 26th week of gestation. METHODS: retrospective analysis of the cases of premature rupture of membranes up to the 26th week of gestation, without signs of labor or treatment for this condition before admission, followed up at the Obstetric Pathology Infirmary of the "Maternidade Escola Assis Chateaubriand", Federal University of Ceará, from January 1994 to December 1999. The cases with gestational age less than 22 weeks and birth weight lower than 500 g were excluded. Premature rupture of membranes was confirmed by sterile speculum examination. In doubt, amniotic fluid crystallization test and pH determination were performed. All pregnant women underwent ultrasound examination to determine gestational age and amniotic fluid volume. Data concerning the result of gestation and consequences for the mother, fetus and neonate were analyzed. RESULTS: a total of 29 cases of premature rupture of membranes fulfilled inclusion criteria. The mean gestational age at rupture of membranes was 22 weeks. The mean duration of the latency period was 21.7 days. There Were 22 spontaneous vaginal and 3 induced deliveries, besides 4 cesarean sections. In six pregnant women there were signs of infection before labor. Antibiotics were administered in 37.9% of the cases and corticosteroids in 6.9%. No patient underwent tocolysis. There were 3 fetal and 25 neonatal deaths. Only one infant survived. This child remained at the neonatal care unit for 19 days due to infection and respiratory distress syndrome. There was no maternal death. CONCLUSION: the premature rupture of membranes up to the 26th week of gestation has been a fatal discase for fetuses and newborns in our institution.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):115-121
DOI 10.1590/S0100-72032003000200007
PURPOSE: to establish a normality curve of cervical length during pregnancy measured by transvaginal ultrasonography. METHODS: we conducted a prospective, longitudinal study on 82 healthy pregnant women who were followed up from the beginning of pregnancy to delivery at four-week intervals, of whom 49 concluded the study. Patients were divided according to parity into nulliparous women and women with one or more previous deliveries. Cervical length was measured in a sagittal view by transvaginal ultrasonography, as the linear distance between internal and external cervical os. RESULTS: no significant difference was observed in mean cervical length or the 5th, 25, 50th, 75th, or 95th percentile according to gestational age between groups (p>0.05). Between the 20thand 24th gestacional week, the 5th, 50th and 95th percentiles of cervical length were 28, 35 and 47.2 mm, respectively. Cervical length decreased progressively during normal pregnancy, with a significant shortening observed after 20 weeks of gestation and being more marked after 28 weeks (p<0.05). CONCLUSION: the pattern of cervical length behavior does not seem to differ between nulliparous women and women with one or more previous deliveries. The numerical values of the normality curve of cervical length according to gestational age reflect the variability in the peculiar characteristics of the studied sample, thus emphasizing the value of the parameters established for different populations.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):115-121
DOI 10.1590/S0100-72032003000200007
PURPOSE: to establish a normality curve of cervical length during pregnancy measured by transvaginal ultrasonography. METHODS: we conducted a prospective, longitudinal study on 82 healthy pregnant women who were followed up from the beginning of pregnancy to delivery at four-week intervals, of whom 49 concluded the study. Patients were divided according to parity into nulliparous women and women with one or more previous deliveries. Cervical length was measured in a sagittal view by transvaginal ultrasonography, as the linear distance between internal and external cervical os. RESULTS: no significant difference was observed in mean cervical length or the 5th, 25, 50th, 75th, or 95th percentile according to gestational age between groups (p>0.05). Between the 20thand 24th gestacional week, the 5th, 50th and 95th percentiles of cervical length were 28, 35 and 47.2 mm, respectively. Cervical length decreased progressively during normal pregnancy, with a significant shortening observed after 20 weeks of gestation and being more marked after 28 weeks (p<0.05). CONCLUSION: the pattern of cervical length behavior does not seem to differ between nulliparous women and women with one or more previous deliveries. The numerical values of the normality curve of cervical length according to gestational age reflect the variability in the peculiar characteristics of the studied sample, thus emphasizing the value of the parameters established for different populations.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):123-128
DOI 10.1590/S0100-72032003000200008
PURPOSE: to analyze obstetrical and perinatal data in 26 cases of meconium aspiration syndrome (MAS). METHODS: a retrospective review was performed in 26 newborn records diagnosed with meconium aspiration syndrome. Patients were studied emphasizing average days in neonatal intensive care unit and main maternal findings and neonatal complications, correlating them with each other. RESULTS: Eighteen babies were delivered at GH-CSUF and eight out of this hospital. At this time 3,976 deliveries occurred at GH-CSUF, with an incidence of MAS of 0.45%. Nine of 18 babies were born by vaginal delivery; weight was >2,500 g in 16 cases. One-minute Apgar score was >7 in three cases (16.7%), between 4 and 6 in seven cases (38.9%), and between 0 and 3, in eight cases (44.4%). At 5 minutes, seven babies remained <7. Anoxia was the main neonatal complication (36%). The mortality rate was 7.7% and the average hospital stay was 19.9 days. CONCLUSION: MAS is a very important neonatal pathology correlated with high neonatal mortality rates, thick meconium in at least half of the cases, and with a majority of depressed newborns at delivery.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2003;25(2):123-128
DOI 10.1590/S0100-72032003000200008
PURPOSE: to analyze obstetrical and perinatal data in 26 cases of meconium aspiration syndrome (MAS). METHODS: a retrospective review was performed in 26 newborn records diagnosed with meconium aspiration syndrome. Patients were studied emphasizing average days in neonatal intensive care unit and main maternal findings and neonatal complications, correlating them with each other. RESULTS: Eighteen babies were delivered at GH-CSUF and eight out of this hospital. At this time 3,976 deliveries occurred at GH-CSUF, with an incidence of MAS of 0.45%. Nine of 18 babies were born by vaginal delivery; weight was >2,500 g in 16 cases. One-minute Apgar score was >7 in three cases (16.7%), between 4 and 6 in seven cases (38.9%), and between 0 and 3, in eight cases (44.4%). At 5 minutes, seven babies remained <7. Anoxia was the main neonatal complication (36%). The mortality rate was 7.7% and the average hospital stay was 19.9 days. CONCLUSION: MAS is a very important neonatal pathology correlated with high neonatal mortality rates, thick meconium in at least half of the cases, and with a majority of depressed newborns at delivery.