Você pesquisou por y - Revista Brasileira de Ginecologia e Obstetrícia
Summary
Rev Bras Ginecol Obstet. 2002;24(1):09-13
DOI 10.1590/S0100-72032002000100002
Purpose: to investigate the association between serum C-reactive protein concentration and preeclampsia occurrence, as well as its relation to the disease severity. Patients and Methods: twenty-seven preeclamptic pregnant women and 27 pregnant women with no clinical intercurrences, in the third trimester of pregnancy, were evaluated in a transversal case-control study. Serum C-reactive protein dosage, besides clinical examination and laboratory tests for the diagnosis of the disease, were performed in the antenatal period. The association between C-reactive protein and the presence of preeclampsia, and the correlation between plasma protein values and blood pressure values were investigated. The chi² significance test and regression analysis through the square minimum technique were used, and the results were considered to be statistically significant when p<0.05. Results: the preeclamptic pregnant women presented mean blood pressure levels higher than their controls (129.9±12.1 and 87.2±6.5 mmHg, respectively) and significantly higher C-reactive protein mean values than the normotensive women (18.9±4.9 and 1.56±0.8 mg/L, respectively). There was a significant association between the C-reactive protein concentration increase and preeclampsia occurrence (p<0.0001, odds ratio: 20.1). It was also observed that the mean arterial pressure and proteinuria presented a direct correlation with the circulating C-reactive protein in maternal blood (p=0.001 and p<0.001, respectively). Conclusion: C-reactive protein is an effective marker of preeclampsia occurrence and significantly correlates with the disease severity. The use of this test for the differential diagnosis of pregnant women in several hypertensive situations and its utilization as a marker of preeclampsia prognosis deserve further studies.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):09-13
DOI 10.1590/S0100-72032002000100002
Purpose: to investigate the association between serum C-reactive protein concentration and preeclampsia occurrence, as well as its relation to the disease severity. Patients and Methods: twenty-seven preeclamptic pregnant women and 27 pregnant women with no clinical intercurrences, in the third trimester of pregnancy, were evaluated in a transversal case-control study. Serum C-reactive protein dosage, besides clinical examination and laboratory tests for the diagnosis of the disease, were performed in the antenatal period. The association between C-reactive protein and the presence of preeclampsia, and the correlation between plasma protein values and blood pressure values were investigated. The chi² significance test and regression analysis through the square minimum technique were used, and the results were considered to be statistically significant when p<0.05. Results: the preeclamptic pregnant women presented mean blood pressure levels higher than their controls (129.9±12.1 and 87.2±6.5 mmHg, respectively) and significantly higher C-reactive protein mean values than the normotensive women (18.9±4.9 and 1.56±0.8 mg/L, respectively). There was a significant association between the C-reactive protein concentration increase and preeclampsia occurrence (p<0.0001, odds ratio: 20.1). It was also observed that the mean arterial pressure and proteinuria presented a direct correlation with the circulating C-reactive protein in maternal blood (p=0.001 and p<0.001, respectively). Conclusion: C-reactive protein is an effective marker of preeclampsia occurrence and significantly correlates with the disease severity. The use of this test for the differential diagnosis of pregnant women in several hypertensive situations and its utilization as a marker of preeclampsia prognosis deserve further studies.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):15-20
DOI 10.1590/S0100-72032002000100003
Purpose: to evaluate the effects of ascending infection on the mother and newborn in the cases of premature rupture of membranes. Methods: this was a prospective study, carried out to evaluate 50 pregnant women with premature rupture of membranes (PROM) and their newborns. The clinical chorioamnionitis was investigated by clinical findings (thermal curve, abdominal pain by groping and/or uterine softening, smell and other characteristics of vaginal secretion) and subsidiary tests (white blood cell count and C-reactive protein). The histologic chorioamnionitis was investigated by macroscopic and microscopic study (placenta, membranes and cord). In the microscopic study optic microscopy with hematoxylin-eosin staining was used. The newborns were evaluated as to weight and Apgar score in the first and fifth minutes of life. White blood cell count, culture of auditory canal swab and aspirated gastric material culture complemented the study. Statistical analysis was performed using the Fisher exact test and the Student t-test, with level of significance set at 5% (p < 0.05). Results: The rate of clinical chorioamnionitis was 29.4% (15/50), while for histologic chorioamnionitis it was 40% (20/50). All the cases of clinical chorioamnionitis had latency times (LT) higher than 24 hours. The newborns presented signal of infection in 31.4% of the cases (16/51), all with LT higher than 24 hours. The main isolated microorganisms of auditive duct and gastric aspirate of newborns were Klebsiella pneumoniae, Staphylococcus aureus, Gram positive coccus and group B Streptococcus. The infected newborns presented lower Apgar scores in the first and fifth minute of life, lower weight and higher perinatal morbidity and mortality when compared with newborns without infection. Conclusions: based on the analysis of results obtained in the present study, it was possible to conclude that the prolonged latency times increase the possibility of ascending infection, leading to higher possibility of premature delivery and high maternal morbidity (clinical chorioamnionitis), as well as perinatal morbidity and mortality.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):15-20
DOI 10.1590/S0100-72032002000100003
Purpose: to evaluate the effects of ascending infection on the mother and newborn in the cases of premature rupture of membranes. Methods: this was a prospective study, carried out to evaluate 50 pregnant women with premature rupture of membranes (PROM) and their newborns. The clinical chorioamnionitis was investigated by clinical findings (thermal curve, abdominal pain by groping and/or uterine softening, smell and other characteristics of vaginal secretion) and subsidiary tests (white blood cell count and C-reactive protein). The histologic chorioamnionitis was investigated by macroscopic and microscopic study (placenta, membranes and cord). In the microscopic study optic microscopy with hematoxylin-eosin staining was used. The newborns were evaluated as to weight and Apgar score in the first and fifth minutes of life. White blood cell count, culture of auditory canal swab and aspirated gastric material culture complemented the study. Statistical analysis was performed using the Fisher exact test and the Student t-test, with level of significance set at 5% (p < 0.05). Results: The rate of clinical chorioamnionitis was 29.4% (15/50), while for histologic chorioamnionitis it was 40% (20/50). All the cases of clinical chorioamnionitis had latency times (LT) higher than 24 hours. The newborns presented signal of infection in 31.4% of the cases (16/51), all with LT higher than 24 hours. The main isolated microorganisms of auditive duct and gastric aspirate of newborns were Klebsiella pneumoniae, Staphylococcus aureus, Gram positive coccus and group B Streptococcus. The infected newborns presented lower Apgar scores in the first and fifth minute of life, lower weight and higher perinatal morbidity and mortality when compared with newborns without infection. Conclusions: based on the analysis of results obtained in the present study, it was possible to conclude that the prolonged latency times increase the possibility of ascending infection, leading to higher possibility of premature delivery and high maternal morbidity (clinical chorioamnionitis), as well as perinatal morbidity and mortality.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):21-28
DOI 10.1590/S0100-72032002000100004
Purpose: to investigate antepartum factors related to cesarean section and develop a cesarean section predictive model. Methods: the study design was a retrospective cohort which included all the cared 843 deliveries in a third level unit from June 1993 through November 1994. Children with 1,000 g birthweight and above were included. The dependent variable was cesarean section (c-section). Independent variables were antepartum factors related to c-section. Logistic regression was used to develop a predictive model. Results: our model showed risk of c-section according to the following variables: maternal age under 20 years (OR = 0.396) and over 28 years (OR = 2.133); previous vaginal deliveries (OR = 0.626); previous c-section (OR = 4.576); prenatal care (OR = 2.346); breech presentation (OR = 4.174); twin pregnancies (OR = 14.065); late obstetrical hemorrhage (OR = 28.189); mild preeclampsia (OR = 2.180); severe preeclampsia OR=16.738; chronic hypertension OR=4.927 and other clinical problems (OR = 2.012). The predictive model had a concordance of 82.3% between probabilities and responses. Conclusions: our study identified 12 antepartum factors related to c-section. It was possible to develop a cesarean section predictive model taking into account all previously identified antepartum risk factors.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):21-28
DOI 10.1590/S0100-72032002000100004
Purpose: to investigate antepartum factors related to cesarean section and develop a cesarean section predictive model. Methods: the study design was a retrospective cohort which included all the cared 843 deliveries in a third level unit from June 1993 through November 1994. Children with 1,000 g birthweight and above were included. The dependent variable was cesarean section (c-section). Independent variables were antepartum factors related to c-section. Logistic regression was used to develop a predictive model. Results: our model showed risk of c-section according to the following variables: maternal age under 20 years (OR = 0.396) and over 28 years (OR = 2.133); previous vaginal deliveries (OR = 0.626); previous c-section (OR = 4.576); prenatal care (OR = 2.346); breech presentation (OR = 4.174); twin pregnancies (OR = 14.065); late obstetrical hemorrhage (OR = 28.189); mild preeclampsia (OR = 2.180); severe preeclampsia OR=16.738; chronic hypertension OR=4.927 and other clinical problems (OR = 2.012). The predictive model had a concordance of 82.3% between probabilities and responses. Conclusions: our study identified 12 antepartum factors related to c-section. It was possible to develop a cesarean section predictive model taking into account all previously identified antepartum risk factors.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):29-36
DOI 10.1590/S0100-72032002000100005
Purpose: to study computerized cardiotocography performed in high-risk pregnancies, analyze the results, and correlate the criteria to perinatal results. Patients and Methods: two hundred and thirty-three high-risk pregnancies were studied prospectively, performing a total of 485 computerized cardiotocographies. The exclusion criteria included fetal anomalies and signal loss over 20% (proportion of 3.75-millisecond periods in which there were no valid pulse intervals). The perinatal results of 71 pregnancies were correlated to the last cardiotocography, performed at least seven days before birth, excluding patients with absent or reversed end diastolic velocities in the umbilical arteries. Results: thirty-three examinations with signal loss over 20% were excluded. The normal criteria were met in 404 (83.3%), and 62.1% examinations met the criteria within 20 minutes and 79% within 30 minutes. The abnormal computerized cardiotocography was related significantly (p<0.05) to adverse perinatal results, such as: preterm delivery, first minute Apgar score less than 7 (33%), neonatal intensive care admission (55.5%) and intubation of newborn at delivery (44.4%). Conclusions: computerized cardiotocography in high-risk pregnancies met the normal criteria in most of the cases, with the examination performed for 30 minutes. The cases that did not meet the criteria correlated significantly to adverse perinatal results.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):29-36
DOI 10.1590/S0100-72032002000100005
Purpose: to study computerized cardiotocography performed in high-risk pregnancies, analyze the results, and correlate the criteria to perinatal results. Patients and Methods: two hundred and thirty-three high-risk pregnancies were studied prospectively, performing a total of 485 computerized cardiotocographies. The exclusion criteria included fetal anomalies and signal loss over 20% (proportion of 3.75-millisecond periods in which there were no valid pulse intervals). The perinatal results of 71 pregnancies were correlated to the last cardiotocography, performed at least seven days before birth, excluding patients with absent or reversed end diastolic velocities in the umbilical arteries. Results: thirty-three examinations with signal loss over 20% were excluded. The normal criteria were met in 404 (83.3%), and 62.1% examinations met the criteria within 20 minutes and 79% within 30 minutes. The abnormal computerized cardiotocography was related significantly (p<0.05) to adverse perinatal results, such as: preterm delivery, first minute Apgar score less than 7 (33%), neonatal intensive care admission (55.5%) and intubation of newborn at delivery (44.4%). Conclusions: computerized cardiotocography in high-risk pregnancies met the normal criteria in most of the cases, with the examination performed for 30 minutes. The cases that did not meet the criteria correlated significantly to adverse perinatal results.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):37-43
DOI 10.1590/S0100-72032002000100006
Purpose: to determine the factors associated with the detection of a microinvasive carcinoma in the cervical cone of women with a previous colposcopically directed biopsy compatible with cervical intraepithelial neoplasia (CIN) 3 and to evaluate the proportion of involved margins. Patients and methods: we reviewed the medical records of 385 women (mean age: 39 years) submitted to cold conization or conization by high frequency surgery (HFS) with a loop during the period from January 1993 to July 2000. These procedures were indicated on the basis of a biopsy compatible with (CIN) 3. Results: the diagnosis of the cone was compatible with (CIN) 3 in 243 (63%) women and with (CIN) 2 in 13 (3%). Only 10 presented HPV/CIN 1 (3%) and eight had no residual disease in the cone. However, 101 (26%) women presented a microinvasive carcinoma in the cone and 10 (3%) presented a frankly invasive carcinoma. Age, menstrual status and number of deliveries were not related to the severity of the cone lesion. Women with oncologic colpocytology changes suggestive of invasion presented a significantly higher risk of having a microinvasive or invasive carcinoma as determined by final histology (p<0.01), although 52 of the 243 women with CIN 2 or CIN 3 in the cone also showed a suggestion of invasion at colpocytology. Among the women with CIN 2 or 3, the epithelium was white in 44%, dotted in 21%, and mosaic-like in 17%. This proportion was similar for women with a microinvasive or invasive carcinoma, with these images being detected in 37%, 23% and 21% of the cases, respectively. Involvement of the cone margins was significantly higher among women submitted to HFS (49%) than among those submitted to cold conization (29%). Conclusion: the absence of independent clinical and colposcopic factors associated with the detection of a microinvasive carcinoma in women submitted to conization on the basis of a biopsy compatible with (CIN) 3 justifies the conical excision of the squamocolumnar junction in high grade cervical lesions.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):37-43
DOI 10.1590/S0100-72032002000100006
Purpose: to determine the factors associated with the detection of a microinvasive carcinoma in the cervical cone of women with a previous colposcopically directed biopsy compatible with cervical intraepithelial neoplasia (CIN) 3 and to evaluate the proportion of involved margins. Patients and methods: we reviewed the medical records of 385 women (mean age: 39 years) submitted to cold conization or conization by high frequency surgery (HFS) with a loop during the period from January 1993 to July 2000. These procedures were indicated on the basis of a biopsy compatible with (CIN) 3. Results: the diagnosis of the cone was compatible with (CIN) 3 in 243 (63%) women and with (CIN) 2 in 13 (3%). Only 10 presented HPV/CIN 1 (3%) and eight had no residual disease in the cone. However, 101 (26%) women presented a microinvasive carcinoma in the cone and 10 (3%) presented a frankly invasive carcinoma. Age, menstrual status and number of deliveries were not related to the severity of the cone lesion. Women with oncologic colpocytology changes suggestive of invasion presented a significantly higher risk of having a microinvasive or invasive carcinoma as determined by final histology (p<0.01), although 52 of the 243 women with CIN 2 or CIN 3 in the cone also showed a suggestion of invasion at colpocytology. Among the women with CIN 2 or 3, the epithelium was white in 44%, dotted in 21%, and mosaic-like in 17%. This proportion was similar for women with a microinvasive or invasive carcinoma, with these images being detected in 37%, 23% and 21% of the cases, respectively. Involvement of the cone margins was significantly higher among women submitted to HFS (49%) than among those submitted to cold conization (29%). Conclusion: the absence of independent clinical and colposcopic factors associated with the detection of a microinvasive carcinoma in women submitted to conization on the basis of a biopsy compatible with (CIN) 3 justifies the conical excision of the squamocolumnar junction in high grade cervical lesions.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):45-50
DOI 10.1590/S0100-72032002000100007
Purpose: to perform a census about the frequency of endometrial adenocarcinoma of women submitted to diagnostic hysteroscopy in five Brazilian hysteroscopic centers in São Paulo, Rio de Janeiro, Salvador, Caxias do Sul and Porto Alegre. Methods: information was collected from standard questionnaires about the presence of endometrial adenocarcinoma, hysteroscopic staging and histologic type, in pre- and postmenopausal women. Results: among 6,466 hysteroscopic procedures, endometrial adenocarcinoma was present in 92 patients (1.4%), confirmed by histology in 79 (1.2%) cases. For the hysteroscopic diagnosis of endometrial adenocarcinoma confirmed by histology, a sensitivity of 85.9%, specificity of 100%, positive predictive value of 100% and negative predictive value of 98.6% were obtained. In the premenopausal group, among 3,845 hysteroscopic exams, endometrial cancer was present in 83 (3.2%) and confirmed by histology in 71 cases (2.7%). Conclusions: this study points out the importance of epidemiological methods in the diagnostic and prevention programs of endometrial cancer, specially in postmenopause, revealing the need for further epidemiological studies on endometrial adenocarcinoma diagnostis and prevention programs.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):45-50
DOI 10.1590/S0100-72032002000100007
Purpose: to perform a census about the frequency of endometrial adenocarcinoma of women submitted to diagnostic hysteroscopy in five Brazilian hysteroscopic centers in São Paulo, Rio de Janeiro, Salvador, Caxias do Sul and Porto Alegre. Methods: information was collected from standard questionnaires about the presence of endometrial adenocarcinoma, hysteroscopic staging and histologic type, in pre- and postmenopausal women. Results: among 6,466 hysteroscopic procedures, endometrial adenocarcinoma was present in 92 patients (1.4%), confirmed by histology in 79 (1.2%) cases. For the hysteroscopic diagnosis of endometrial adenocarcinoma confirmed by histology, a sensitivity of 85.9%, specificity of 100%, positive predictive value of 100% and negative predictive value of 98.6% were obtained. In the premenopausal group, among 3,845 hysteroscopic exams, endometrial cancer was present in 83 (3.2%) and confirmed by histology in 71 cases (2.7%). Conclusions: this study points out the importance of epidemiological methods in the diagnostic and prevention programs of endometrial cancer, specially in postmenopause, revealing the need for further epidemiological studies on endometrial adenocarcinoma diagnostis and prevention programs.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):51-57
DOI 10.1590/S0100-72032002000100008
Purpose: to evaluate p53 overexpression value in vulvar intraepithelial neoplasia (VIN) III recurrence/progression. Methods: twenty patients with undifferentiated VIN III were selected and followed up every six months for four years and divided into two groups: fourteen without and six with recurrence/progression lesion. The recurrence/progression cases were distributed as follows: in three patients recurrence occurred only once; in two, twice, and only one progressed to squamous cancer. In both groups the site of vulvar lesion and p53 overexpression and immunostaining pattern were analyzed. A similar study was performed in recurrence/progression cases, besides the analysis of the time interval to occur the arise of recurrence/progression. Results: recurrence was observed in 25% of the cases and, in 5%, progression to carcinoma. The mean time interval for recurrence was 24.5 months. Multifocal location of the initial lesion was the predominant form (50%) in both groups. In the majority of the cases (87.5%) recurrence/progression occurred at the same site of the initial vulvar lesion. p53 overexpression was observed in 50% of the VIN III primary lesions and in 75% of the recurrence/progression cases. Conclusions: p53 overexpression seems to play an important role in VIN III pathogenesis and may predict the clinical course of the lesions. VIN III recurrence/progression has a tendency to occur in the same area of the initial lesion, suggesting the presence of molecular disturbance.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):51-57
DOI 10.1590/S0100-72032002000100008
Purpose: to evaluate p53 overexpression value in vulvar intraepithelial neoplasia (VIN) III recurrence/progression. Methods: twenty patients with undifferentiated VIN III were selected and followed up every six months for four years and divided into two groups: fourteen without and six with recurrence/progression lesion. The recurrence/progression cases were distributed as follows: in three patients recurrence occurred only once; in two, twice, and only one progressed to squamous cancer. In both groups the site of vulvar lesion and p53 overexpression and immunostaining pattern were analyzed. A similar study was performed in recurrence/progression cases, besides the analysis of the time interval to occur the arise of recurrence/progression. Results: recurrence was observed in 25% of the cases and, in 5%, progression to carcinoma. The mean time interval for recurrence was 24.5 months. Multifocal location of the initial lesion was the predominant form (50%) in both groups. In the majority of the cases (87.5%) recurrence/progression occurred at the same site of the initial vulvar lesion. p53 overexpression was observed in 50% of the VIN III primary lesions and in 75% of the recurrence/progression cases. Conclusions: p53 overexpression seems to play an important role in VIN III pathogenesis and may predict the clinical course of the lesions. VIN III recurrence/progression has a tendency to occur in the same area of the initial lesion, suggesting the presence of molecular disturbance.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):59-65
DOI 10.1590/S0100-72032002000100009
Introduction: the Resolution 196/96 of the Conselho Nacional de Saúde (National Council of Health/Ministry of Health) presents the main Brazilian guidelines on research involving human subjects, including the content of written informed consent. Purpose: to present the knowledge and opinion of Brazilian researchers on the contents of Resolution 196/96, specifically related to the informed consent form. Subjects and methods: forty-six doctors responsible for the area of gynecology at Brazilian universities, four directors of research centers and 31 researchers who participated in a study related to fertility regulation during the 12 months preceding September, 2000. Subjects completed a self-reporting questionnaire. Data were analyzed by the chi² test. Results: most subjects declared that they knew the Resolution 196/96 and considered it adequate, although difficult to comply with; they considered that all studies should have an informed consent form, and knew that its content should guarantee confidentiality. More researchers than those responsible for gynecology department/directors knew that the informed consent form should be prepared by the principal investigator. Significantly more responsible for gynecology department/directors than researchers declared that subjects must always sign (or put their thumb print if they do not know how to write) on the informed consent form. Subjects declared that payment of expenses resulting from participation in a study must always be explained in the informed consent form. Conclusion: despite the wide dissemination of the Resolution 196/96, it was not known by all the researchers nor by all those responsible for gynecology departament/directors. The majority agreed with the contents required by the Resolution for the informed consent form.
Summary
Rev Bras Ginecol Obstet. 2002;24(1):59-65
DOI 10.1590/S0100-72032002000100009
Introduction: the Resolution 196/96 of the Conselho Nacional de Saúde (National Council of Health/Ministry of Health) presents the main Brazilian guidelines on research involving human subjects, including the content of written informed consent. Purpose: to present the knowledge and opinion of Brazilian researchers on the contents of Resolution 196/96, specifically related to the informed consent form. Subjects and methods: forty-six doctors responsible for the area of gynecology at Brazilian universities, four directors of research centers and 31 researchers who participated in a study related to fertility regulation during the 12 months preceding September, 2000. Subjects completed a self-reporting questionnaire. Data were analyzed by the chi² test. Results: most subjects declared that they knew the Resolution 196/96 and considered it adequate, although difficult to comply with; they considered that all studies should have an informed consent form, and knew that its content should guarantee confidentiality. More researchers than those responsible for gynecology department/directors knew that the informed consent form should be prepared by the principal investigator. Significantly more responsible for gynecology department/directors than researchers declared that subjects must always sign (or put their thumb print if they do not know how to write) on the informed consent form. Subjects declared that payment of expenses resulting from participation in a study must always be explained in the informed consent form. Conclusion: despite the wide dissemination of the Resolution 196/96, it was not known by all the researchers nor by all those responsible for gynecology departament/directors. The majority agreed with the contents required by the Resolution for the informed consent form.