Trabalhos Originais Archives - Page 2 of 50 - Revista Brasileira de Ginecologia e Obstetrícia
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):129-134
DOI 10.1590/S0100-72032000000300002
Purpose: to compare the performance of cervical canal and vaginal cul-de-sac samples for colpocytology testing, in order to diagnose cervical neoplasia. Methods: three sequential groups were constituted: group 1 - 10,048 women with ectocervix and cul-de-sac samples collected with the use of an Ayre spatula; group 2 - 3,847 women with ectocervix, cul-de-sac and cervical canal samples taken with an Ayre spatula and a cytobrush, and group 3 -- 4,059 women with ectocervix and cervical canal samples, using an Ayre spatula and a cytobrush. ANOVA (analysis of variance) and comparison of proportions were utilized for the statistical analysis. Results: the rates of abnormal tests in groups 2 (2.6%) and 3 (2.4%), including all squamous and glandular lesions, were significantly higher than in group 1 (2.0%). The diagnosis rates of low-grade squamous intraepithelial lesion (LGSIL) were not statistically different between the three groups (1.27, 1.25 and 1.07%). On the other hand, the diagnosis rates of high-grade squamous intraepithelial lesion (HGSIL) were statistically higher in groups 2 (0.81%) and 3 (0.77%) than in group 1 (0.54%). The difference between the rates of the second and the third groups did not present any statistical significance. Conclusions: the cervical canal sampling improves the performance of cytologic testing for the diagnosis of HGSIL, while cul-de-sac sampling does not change significantly the performance in diagnosing cervical neoplasia.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):129-134
DOI 10.1590/S0100-72032000000300002
Purpose: to compare the performance of cervical canal and vaginal cul-de-sac samples for colpocytology testing, in order to diagnose cervical neoplasia. Methods: three sequential groups were constituted: group 1 - 10,048 women with ectocervix and cul-de-sac samples collected with the use of an Ayre spatula; group 2 - 3,847 women with ectocervix, cul-de-sac and cervical canal samples taken with an Ayre spatula and a cytobrush, and group 3 -- 4,059 women with ectocervix and cervical canal samples, using an Ayre spatula and a cytobrush. ANOVA (analysis of variance) and comparison of proportions were utilized for the statistical analysis. Results: the rates of abnormal tests in groups 2 (2.6%) and 3 (2.4%), including all squamous and glandular lesions, were significantly higher than in group 1 (2.0%). The diagnosis rates of low-grade squamous intraepithelial lesion (LGSIL) were not statistically different between the three groups (1.27, 1.25 and 1.07%). On the other hand, the diagnosis rates of high-grade squamous intraepithelial lesion (HGSIL) were statistically higher in groups 2 (0.81%) and 3 (0.77%) than in group 1 (0.54%). The difference between the rates of the second and the third groups did not present any statistical significance. Conclusions: the cervical canal sampling improves the performance of cytologic testing for the diagnosis of HGSIL, while cul-de-sac sampling does not change significantly the performance in diagnosing cervical neoplasia.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):175-179
DOI 10.1590/S0100-72032000000300009
Purpose: to evaluate the route of delivery in a group of low-income primipara pregnant women with a previous cesarean section, and the factors associated with the repetition of the cesarean section on the second delivery. Patients and Methods: it was a case-control study including 356 women who were assisted at the Maternity of CAISM/UNICAMP during the period between January 1993 and January 1996. The cases were 153 women whose second delivery was through a cesarean section and the controls were 203 women whose second delivery was vaginal. For analysis, means, standard deviation, Student's t-test, Mann-Whitney test, chi² test and odds ratio (OR) with 95% CI for each factor possibly associated with cesarean section on the second delivery were used. Results: the route of the second delivery was vaginal for 57% of the women. Among the several variables studied, those which showed to be significantly associated with a cesarean section on the second delivery were: higher maternal age (for women over 35 years, OR = 16.4), previous abortions (OR = 2.09), induced labor (OR = 3,83), premature rupture of membranes (OR = 2.83), not having an epidural analgesia performed during labor (OR = 5.3), the finding of some alteration in fetal well-being (OR = 2.7) and the delivery occurring during the afternoon (OR = 1.92). Conclusions: these results indicate that the factors associated with the repetition of cesarean section in women with a previous scar of cesarean section in this population are predominantly medical; however, there is still the possibility of proposing interventions directed to decreasing the rates of repeated cesarean sections.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):175-179
DOI 10.1590/S0100-72032000000300009
Purpose: to evaluate the route of delivery in a group of low-income primipara pregnant women with a previous cesarean section, and the factors associated with the repetition of the cesarean section on the second delivery. Patients and Methods: it was a case-control study including 356 women who were assisted at the Maternity of CAISM/UNICAMP during the period between January 1993 and January 1996. The cases were 153 women whose second delivery was through a cesarean section and the controls were 203 women whose second delivery was vaginal. For analysis, means, standard deviation, Student's t-test, Mann-Whitney test, chi² test and odds ratio (OR) with 95% CI for each factor possibly associated with cesarean section on the second delivery were used. Results: the route of the second delivery was vaginal for 57% of the women. Among the several variables studied, those which showed to be significantly associated with a cesarean section on the second delivery were: higher maternal age (for women over 35 years, OR = 16.4), previous abortions (OR = 2.09), induced labor (OR = 3,83), premature rupture of membranes (OR = 2.83), not having an epidural analgesia performed during labor (OR = 5.3), the finding of some alteration in fetal well-being (OR = 2.7) and the delivery occurring during the afternoon (OR = 1.92). Conclusions: these results indicate that the factors associated with the repetition of cesarean section in women with a previous scar of cesarean section in this population are predominantly medical; however, there is still the possibility of proposing interventions directed to decreasing the rates of repeated cesarean sections.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):167-173
DOI 10.1590/S0100-72032000000300008
Purpose: to determine the most efficient clinical and histopathological predictors of complete hydatidiform mole (CHM) after gestational trophoblastic tumors (GTT). Methods: a prospective clinical and histopathological study was performed on all patients with CHM treated at the University Hospital of Botucatu between 1990 and 1998. Preevacuation clinical evaluation allowed the classification of molar pregnancy into high risk and low risk CHM. The author analyzed the clinical predictors of GTT established by Goldstein et al.¹ and by other authors2--10. The histopathological evaluation included the confirmation of CHM diagnosis based on the criteria by Szulman and Surti11 and the understanding of risk factors for GTT by Ayhan et al.8. The clinical and histopathological predictors were correlated with the postmolar GTT. Results: ovarian cysts larger than 6 cm and uterus size larger than 16 cm were the most efficient clinical predictors of GTT in 65 patients with CHM. Trophoblastic proliferation, nuclear atypia, necrosis/hemorrhage, trophoblastic maturation, and the ratio cytotrophoblast to syncytiotrophoblast were not significant predictors of GTT. The correlation between the clinical and histopathological predictors for the development of GTT was not possible, as no histopathological parameter was significant. Conclusion: additional investigations could evaluate other predictors for persistent disease, and its usefulness in a clinical context. The sequential determination of plasmatic beta-hCG remains the only safe predictor for persistent disease.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):167-173
DOI 10.1590/S0100-72032000000300008
Purpose: to determine the most efficient clinical and histopathological predictors of complete hydatidiform mole (CHM) after gestational trophoblastic tumors (GTT). Methods: a prospective clinical and histopathological study was performed on all patients with CHM treated at the University Hospital of Botucatu between 1990 and 1998. Preevacuation clinical evaluation allowed the classification of molar pregnancy into high risk and low risk CHM. The author analyzed the clinical predictors of GTT established by Goldstein et al.¹ and by other authors2--10. The histopathological evaluation included the confirmation of CHM diagnosis based on the criteria by Szulman and Surti11 and the understanding of risk factors for GTT by Ayhan et al.8. The clinical and histopathological predictors were correlated with the postmolar GTT. Results: ovarian cysts larger than 6 cm and uterus size larger than 16 cm were the most efficient clinical predictors of GTT in 65 patients with CHM. Trophoblastic proliferation, nuclear atypia, necrosis/hemorrhage, trophoblastic maturation, and the ratio cytotrophoblast to syncytiotrophoblast were not significant predictors of GTT. The correlation between the clinical and histopathological predictors for the development of GTT was not possible, as no histopathological parameter was significant. Conclusion: additional investigations could evaluate other predictors for persistent disease, and its usefulness in a clinical context. The sequential determination of plasmatic beta-hCG remains the only safe predictor for persistent disease.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):159-165
DOI 10.1590/S0100-72032000000300007
Purpose: to determine the frequency of recurrence of seizures after anticonvulsant therapy with magnesium sulfate and to evaluate treatment and maternal prognosis. Patients and Methods: a prospective cohort study was conducted, enrolling all cases of eclampsia managed at IMIP between January/1995 and June/1998. Magnesium sulfate and oxygen therapy were administered routinely and interruption of pregnancy was performed after maternal stabilization. The frequency of recurrence of seizures and its association with maternal complications were determined. chi² test for association was used at a 5% level of significance. Results: twelve cases presented recurrence of convulsions after magnesium sulfate (10%) and all received a repeated dose. In four of them convulsions persisted and they received intravenous diazepam. After diazepam, one patient still had seizures, with unsuccessful administration of phenytoin and therefore barbituric coma was induced (thionembutal). This patient had a CT-scan with evidence of intracerebral hemorrhage. Maternal complications were significantly more frequent in the group with recurrence: coma (16.7% versus 0.95), acidosis (50% versus 2.9%), pulmonary edema (16.7% versus 2.9%), cerebral hemorrhage (16.7% versus 0%) and acute renal failure (16.7% versus 1.9%). Three cases of maternal death occurred in patients with recurrence (25%) versus 2 cases in patients without recurrence (1.9%). Conclusions: rate of recurrence after anticonvulsant therapy with magnesium sulfate is low (10%) but it is associated with increased maternal morbidity and mortality. These cases must be managed in an intensive care unit and submitted to routine CT-scan because cerebral hemorrhage can be the cause of recurrence.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):159-165
DOI 10.1590/S0100-72032000000300007
Purpose: to determine the frequency of recurrence of seizures after anticonvulsant therapy with magnesium sulfate and to evaluate treatment and maternal prognosis. Patients and Methods: a prospective cohort study was conducted, enrolling all cases of eclampsia managed at IMIP between January/1995 and June/1998. Magnesium sulfate and oxygen therapy were administered routinely and interruption of pregnancy was performed after maternal stabilization. The frequency of recurrence of seizures and its association with maternal complications were determined. chi² test for association was used at a 5% level of significance. Results: twelve cases presented recurrence of convulsions after magnesium sulfate (10%) and all received a repeated dose. In four of them convulsions persisted and they received intravenous diazepam. After diazepam, one patient still had seizures, with unsuccessful administration of phenytoin and therefore barbituric coma was induced (thionembutal). This patient had a CT-scan with evidence of intracerebral hemorrhage. Maternal complications were significantly more frequent in the group with recurrence: coma (16.7% versus 0.95), acidosis (50% versus 2.9%), pulmonary edema (16.7% versus 2.9%), cerebral hemorrhage (16.7% versus 0%) and acute renal failure (16.7% versus 1.9%). Three cases of maternal death occurred in patients with recurrence (25%) versus 2 cases in patients without recurrence (1.9%). Conclusions: rate of recurrence after anticonvulsant therapy with magnesium sulfate is low (10%) but it is associated with increased maternal morbidity and mortality. These cases must be managed in an intensive care unit and submitted to routine CT-scan because cerebral hemorrhage can be the cause of recurrence.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):153-157
DOI 10.1590/S0100-72032000000300006
Purpose: to evaluate, in a Brazilian population, the possible association between history of sexual violence and some of the more frequent gynecologic complaints related by women. Methods: secondary analysis of data from a cross-sectional study in which 1838 women between 15 and 49 years of age were interviewed in their homes. They were residents of the cities of Campinas and Sumaré, in the state of São Paulo. A structured and pretested questionnaire was used, which allowed to characterize the interviewees' history of sexual violence, the existence of sexual dysfunctions and the presence of gynecologic symptoms in the year previous to the interview. The statistical differences were evaluated by the chi² test. Results: little more than one third (38.1%) of the women did not report history of sexual violence; 54.8% related that at least once they had had sexual intercourse against their will, without being forced to, although 23% mentioned some kind of coercion; 7.1% reported having been forced to have sex. Statistical association was found between history of sexual violence and the reference to gynecologic complaints and sexual dysfunctions. Conclusions: it was observed that even less aggressive forms of imposition of the man's will in the couple's sexual life were associated with a higher prevalence of the most frequent gynecologic complaints. The gynecologist must, therefore, have in mind this etiological factor which is rarely being considered at the present time.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(3):153-157
DOI 10.1590/S0100-72032000000300006
Purpose: to evaluate, in a Brazilian population, the possible association between history of sexual violence and some of the more frequent gynecologic complaints related by women. Methods: secondary analysis of data from a cross-sectional study in which 1838 women between 15 and 49 years of age were interviewed in their homes. They were residents of the cities of Campinas and Sumaré, in the state of São Paulo. A structured and pretested questionnaire was used, which allowed to characterize the interviewees' history of sexual violence, the existence of sexual dysfunctions and the presence of gynecologic symptoms in the year previous to the interview. The statistical differences were evaluated by the chi² test. Results: little more than one third (38.1%) of the women did not report history of sexual violence; 54.8% related that at least once they had had sexual intercourse against their will, without being forced to, although 23% mentioned some kind of coercion; 7.1% reported having been forced to have sex. Statistical association was found between history of sexual violence and the reference to gynecologic complaints and sexual dysfunctions. Conclusions: it was observed that even less aggressive forms of imposition of the man's will in the couple's sexual life were associated with a higher prevalence of the most frequent gynecologic complaints. The gynecologist must, therefore, have in mind this etiological factor which is rarely being considered at the present time.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(4):217-223
DOI 10.1590/S0100-72032000000400005
Purpose: to identify recurrent spontaneous abortion- associated factors. Subjects: one hundred seventy-five outpatients were investigated from March 1993 to March 1997 at the "Ambulatório de Aborto Recorrente CAISM/UNICAMP". All of them had had three or more consecutive spontaneous abortions and/or two abortions and were 35 years or more old. Methods: the investigation protocol included: couple's karyotype; hysterosalpingography, serial plasma progesterone levels and/or endometrial biopsy; toxoplasmosis, listeriosis, brucelosis, lues and cytomegalovirus serum tests; Chlamydia trachomatis and Mycoplasma hominis cultures of cervical discharge; TSH and thyroid hormone levels; fasting glucose; autoantibody panel, anti-HLA antibody search by microlymphocytotoxicity crossmatch and one-way mixed lymphocyte culture with inhibitor factor detection. Husband's evaluation included: physical evaluation, lues, Chagas' disease, B and C hepatitis and AIDS serum tests, microlymphocytotoxicity crossmatch and one-way mixed lymphocyte culture with inhibitor factor detection. Results: alloimmune etiology was the most frequently found factor (86.3% of studied patients), represented by negative crossmatch and one-way mixed lymphocyte culture with inhibitor factor below 50%. The second most frequently found factor was cervical incompetence (22.8%), followed by hormonal factor (21.2%), mainly represented by luteal insufficiency. Some patients were found to have more than one etiologic factor. Conclusion: the investigation of recurrent spontaneous abortion-associated factors must include alloimmune etiology. Most cases will remain unexplained without this investigation.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(4):217-223
DOI 10.1590/S0100-72032000000400005
Purpose: to identify recurrent spontaneous abortion- associated factors. Subjects: one hundred seventy-five outpatients were investigated from March 1993 to March 1997 at the "Ambulatório de Aborto Recorrente CAISM/UNICAMP". All of them had had three or more consecutive spontaneous abortions and/or two abortions and were 35 years or more old. Methods: the investigation protocol included: couple's karyotype; hysterosalpingography, serial plasma progesterone levels and/or endometrial biopsy; toxoplasmosis, listeriosis, brucelosis, lues and cytomegalovirus serum tests; Chlamydia trachomatis and Mycoplasma hominis cultures of cervical discharge; TSH and thyroid hormone levels; fasting glucose; autoantibody panel, anti-HLA antibody search by microlymphocytotoxicity crossmatch and one-way mixed lymphocyte culture with inhibitor factor detection. Husband's evaluation included: physical evaluation, lues, Chagas' disease, B and C hepatitis and AIDS serum tests, microlymphocytotoxicity crossmatch and one-way mixed lymphocyte culture with inhibitor factor detection. Results: alloimmune etiology was the most frequently found factor (86.3% of studied patients), represented by negative crossmatch and one-way mixed lymphocyte culture with inhibitor factor below 50%. The second most frequently found factor was cervical incompetence (22.8%), followed by hormonal factor (21.2%), mainly represented by luteal insufficiency. Some patients were found to have more than one etiologic factor. Conclusion: the investigation of recurrent spontaneous abortion-associated factors must include alloimmune etiology. Most cases will remain unexplained without this investigation.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(4):201-208
DOI 10.1590/S0100-72032000000400003
Purpose: to evaluate the modifications due to premature rupture of the membranes of variables of the fetal biophysical profile, comparing them to the ones found in pregnant women with intact membranes. In the group with premature rupture of the membranes, the association of biophysical variables with the Apgar score at the first and fifth minutes and with the occurrence or not of clinical chorioamnionitis and neonatal infection was analyzed. Patients and Methods: in a prospective study, 112 fetal biophysical profiles were established in 60 pregnant women with premature rupture of the membranes at a period between the 28th and the 40th week of pregnancy, and only the last fetal biophysical profile was analyzed and compared to other 60 fetal biophysical profiles of pregnant women with gestational ages identical to the group of study and with intact membranes. Results: statistical analysis of the results revealed that the premature rupture of the membranes diminished the reactivity, not interfering with the body movements of the fetus. It also diminished the frequency of the respiratory movements of the fetus, not determining modifications of the fetal tonus, and considerably decreasing the amniotic fluid index. In terms of prediction of chorioamnionitis and neonatal infection, the fetal biophysical profile did not show any significant statistic validity; however, when the biophysical variables were present, the correlation with the absence of chorioamnionitis and neonatal infection was clearly shown. The result of the last fetal biophysical profile was strongly associated with the Apgar score at the 5th minute. Conclusion: the fetal biophysical profile should be used routinely in pregnant women with premature rupture of the membranes with the purpose of evaluating fetal vitality, and in order to detect those fetuses at a higher risk of infection, specially those with gestational ages of less than 34 weeks. Regarding those fetuses it is best to use a conservative approach.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(4):201-208
DOI 10.1590/S0100-72032000000400003
Purpose: to evaluate the modifications due to premature rupture of the membranes of variables of the fetal biophysical profile, comparing them to the ones found in pregnant women with intact membranes. In the group with premature rupture of the membranes, the association of biophysical variables with the Apgar score at the first and fifth minutes and with the occurrence or not of clinical chorioamnionitis and neonatal infection was analyzed. Patients and Methods: in a prospective study, 112 fetal biophysical profiles were established in 60 pregnant women with premature rupture of the membranes at a period between the 28th and the 40th week of pregnancy, and only the last fetal biophysical profile was analyzed and compared to other 60 fetal biophysical profiles of pregnant women with gestational ages identical to the group of study and with intact membranes. Results: statistical analysis of the results revealed that the premature rupture of the membranes diminished the reactivity, not interfering with the body movements of the fetus. It also diminished the frequency of the respiratory movements of the fetus, not determining modifications of the fetal tonus, and considerably decreasing the amniotic fluid index. In terms of prediction of chorioamnionitis and neonatal infection, the fetal biophysical profile did not show any significant statistic validity; however, when the biophysical variables were present, the correlation with the absence of chorioamnionitis and neonatal infection was clearly shown. The result of the last fetal biophysical profile was strongly associated with the Apgar score at the 5th minute. Conclusion: the fetal biophysical profile should be used routinely in pregnant women with premature rupture of the membranes with the purpose of evaluating fetal vitality, and in order to detect those fetuses at a higher risk of infection, specially those with gestational ages of less than 34 weeks. Regarding those fetuses it is best to use a conservative approach.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(4):191-199
DOI 10.1590/S0100-72032000000400002
Purpose: to determine the frequency of prenatal diagnosis in newborns with gastroschisis operated at the Instituto Materno-Infantil de Pernambuco (IMIP) and to analyze its repercussions on neonatal prognosis. Patients and Methods: a cross-sectional study was carried out, including 31 cases of gastroschisis submitted to surgical correction in our service from 1995 to 1999. Prevalence risk (PR) of neonatal death and its 95% confidence interval were calculated for the presence of prenatal diagnosis and other perinatal and surgical variables. Multiple logistic regression analysis was carried out to determine the adjusted risk of neonatal death. Results: only 10 of 31 cases of gastroschisis (32.3%) had prenatal diagnosis and all were delivered at IMIP. No newborn with prenatal diagnosis was preterm but 43% of those without prenatal diagnosis were premature (p < 0,05). Birth-to-surgery interval was significantly greater in the absence of prenatal diagnosis (7.7 versus 3.8 hours). The type of surgery, need of mechanical ventilation and frequency of postoperative infection were not different between the groups. Neonatal death was more frequent in the group without prenatal diagnosis (67%) than in the group with prenatal diagnosis (20%). The main factors associated with increased risk of neonatal death were gestational age <37 weeks, absence of prenatal diagnosis, delivery in other hospitals, birth-to-surgery interval > 4 hours, staged silo surgery, need of mechanical ventilation and postoperative infection. Conclusions: prenatal diagnosis was infrequent among infants with gastroschisis and neonatal death was extremely high in its absence. It is necessary to achieve greater rates of prenatal diagnosis and to improve perinatal care in order to reduce this increased mortality.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2000;22(4):191-199
DOI 10.1590/S0100-72032000000400002
Purpose: to determine the frequency of prenatal diagnosis in newborns with gastroschisis operated at the Instituto Materno-Infantil de Pernambuco (IMIP) and to analyze its repercussions on neonatal prognosis. Patients and Methods: a cross-sectional study was carried out, including 31 cases of gastroschisis submitted to surgical correction in our service from 1995 to 1999. Prevalence risk (PR) of neonatal death and its 95% confidence interval were calculated for the presence of prenatal diagnosis and other perinatal and surgical variables. Multiple logistic regression analysis was carried out to determine the adjusted risk of neonatal death. Results: only 10 of 31 cases of gastroschisis (32.3%) had prenatal diagnosis and all were delivered at IMIP. No newborn with prenatal diagnosis was preterm but 43% of those without prenatal diagnosis were premature (p < 0,05). Birth-to-surgery interval was significantly greater in the absence of prenatal diagnosis (7.7 versus 3.8 hours). The type of surgery, need of mechanical ventilation and frequency of postoperative infection were not different between the groups. Neonatal death was more frequent in the group without prenatal diagnosis (67%) than in the group with prenatal diagnosis (20%). The main factors associated with increased risk of neonatal death were gestational age <37 weeks, absence of prenatal diagnosis, delivery in other hospitals, birth-to-surgery interval > 4 hours, staged silo surgery, need of mechanical ventilation and postoperative infection. Conclusions: prenatal diagnosis was infrequent among infants with gastroschisis and neonatal death was extremely high in its absence. It is necessary to achieve greater rates of prenatal diagnosis and to improve perinatal care in order to reduce this increased mortality.