Original Article Archives - Page 3 of 55 - Revista Brasileira de Ginecologia e Obstetrícia

  • Original Article

    Gastrin-releasing peptide receptor: a promising new biomarker to identify cervical precursor lesions and cancer

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo4
    03-18-2025

    Summary

    Original Article

    Gastrin-releasing peptide receptor: a promising new biomarker to identify cervical precursor lesions and cancer

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo4
    03-18-2025

    DOI 10.61622/rbgo/2025rbgo4

    Views51

    Abstract

    Objective:

    This study aimed to verify the relation between gastrin-releasing peptide receptor (GRPR), oncogenic Human Papillomavirus (HPV) and cervical lesions severity.

    Methods:

    GRPR mRNA levels were evaluated in cervical cancer-derived cell lines and in primary keratinocytes expressing HPV16 oncogenes by RT-PCR. GRPR protein expression was assessed by immunohistochemistry in organotypic cell cultures derived from keratinocytes transduced with HPV16 oncogenes and in 208 cervical samples, including 59 non-neoplastic tissue, 28 cervical intraepithelial neoplasia grade 3 (CIN3), 44 squamous cell carcinomas (SCC) and 77 adenocarcinomas (ADC). Generic primers (GP5+/GP6+) were used to identify HPV infection in tissue samples. Experiments involving cell lines were analyzed through non-parametric tests (Kruskal Wallis), and Fisher's Exact Test for human tissues samples. All statistical tests were considered significant at p <0.05. Immunohistochemical evaluation was conducted independently and blindly by two observers (AD- LO). Any discordant findings were resolved through discussion to reach a consensus score.

    Results:

    GRPR mRNA levels were not increased in cells expressing HPV16 or HPV18 oncogenes. However, at the protein level, GRPR was upregulated in organotypic cell cultures containing HPV oncogenes. Besides, it was identified an association between GRPR expression and cervical lesion severity (p < 0.0001). The detection rate of high-risk HPV DNA was directly correlated with cervical disease. Nonetheless, HPV infection was not directly associated with GRPR in cervical samples.

    Conclusion:

    GRPR expression is highly predictive of cervical lesion severity, irrespective of HPV infection and might contribute to improving patient's therapeutic management as well as being used a marker of disease progression.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Gastrin-releasing peptide receptor: a promising new biomarker to identify cervical precursor lesions and cancer
  • Original Article

    Accurate evaluation of mode of delivery and labor progression with angle of progression: a prospective cross-sectional

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo5
    03-18-2025

    Summary

    Original Article

    Accurate evaluation of mode of delivery and labor progression with angle of progression: a prospective cross-sectional

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo5
    03-18-2025

    DOI 10.61622/rbgo/2025rbgo5

    Views51

    Abstract

    Objective:

    To determine the validity of the angle of progression (AoP) in predicting delivery mode among women in the second stage of labor.

    Designs:

    This prospective cohort study was conducted at the Obstetrics and Gynecology unit (OBGYN) of two hospitals in Vietnam. Transperineal ultrasound was performed for each woman to measure the progression angle in the second phase of labor.

    Participants:

    A total of 725 women with singleton pregnancies with cephalic presentation at term

    Methods:

    Transperineal ultrasound was used to measure the angle of progression in the second labor phase and to identify the delivery method.

    Results:

    The rate of vaginal birth in women with an AoP ≥ 120° on transperineal ultrasound was 70.2%. The optimal cutoff point of AOP ≥122° with sensitivity and specificity for vaginal birth were 87.8% and 80.7%, respectively the area under the ROC curve of 0.887 (p<0.0001). The study's sample size was restricted owing to deficiencies in resources and time.

    Conclusion:

    The likelihood of achieving spontaneous vaginal delivery can be predicted by the angle of progression measured with transperineal intrapartum ultrasonography during the second stage of labor in women.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Accurate evaluation of mode of delivery and labor progression with angle of progression: a prospective cross-sectional
  • Original Article

    Effect of COVID-19 on Brazilian cesarean and prematurity rates: a cross-sectional study

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo6
    03-18-2025

    Summary

    Original Article

    Effect of COVID-19 on Brazilian cesarean and prematurity rates: a cross-sectional study

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo6
    03-18-2025

    DOI 10.61622/rbgo/2025rbgo6

    Views54

    Abstract

    Objective:

    To investigate the relationship between prematurity and cesarean section rate in Brazil during the beginning of COVID-19 pandemic.

    Methods:

    Utilizing the Robson Classification, this study analyzed data from the Brazilian Ministry of Health's Live Births Panel, comparing CSR) and group 10 (preterm deliveries) between 2019 (pre-pandemic) and 2021 (pandemic) in each of Brazilian states and the overall country. The prematurity and CSR were compared using prevalence ratio and confidence interval, and p-value was obtained. The variation of prematurity and CSR were compared through the coefficient of determination (R2).

    Results:

    A total of 5,522,910 deliveries were evaluated during the period. The CSR increased from 56.34% to 57.05% (p<0.01), and the frequency of preterm deliveries rose from 8.99% to 9.13% (p<0.01). The CSR increased in 23 States and decreased in 4 States, while the prematurity rate increased in 16 States and decreased in 10 States. A positive relationship between the increase of CSR and prematurity was observed during COVID-19, with an R2 value of 0.3121, suggesting a moderate association between these two variables.

    Conclusion:

    Between 2019 (pre-COVID-19 pandemic) and 2021 (the first full year of the COVID-19 pandemic), there was an increase in prematurity and CSR in Brazil. These increases were observed in most Brazilian states and may be correlated. However, it is impossible to establish a cause-effect relationship given the design of this study.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Effect of COVID-19 on Brazilian cesarean and prematurity rates: a cross-sectional study
  • Original Article

    The experience of pregnancy in the COVID-19 pandemic

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo8
    03-18-2025

    Summary

    Original Article

    The experience of pregnancy in the COVID-19 pandemic

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo8
    03-18-2025

    DOI 10.61622/rbgo/2025rbgo8

    Views57

    Abstract

    Objective:

    To describe women's experience of pregnancy during the COVID-19 pandemic.

    Methods:

    A qualitative study conducted in a private maternity hospital, from May, 2020 to November, 2021, with women aged ≥ 18 years, gestational age ≥ 36 weeks at birth and ≥ 24 hours post-partum. Data collected through semi-structured interviews, recorded, transcribed, and analyzed adopting Krippendorff's Content Analysis as theoretical-methodological framework.

    Results:

    Four main themes emerged: Fear, Taking care and celebrating pregnancy: adjusting to the new reality, Harms of Isolation, and Benefits of Isolation. The fear of contamination and its impact on the health of mother and child resulted in the adoption of severe social isolation, including from those considered sources of support by the expecting mother. Overwhelmed, some of the participants reported loneliness and psychic suffering. The opportunity to focus on the pregnancy, the preparations for the arrival of the child, and the family made isolation a beneficial and positive period for other women.

    Conclusion:

    The experience of pregnancy in the Pandemic was an event outside of the ordinary and common. The expecting mother faced her worst fears on a daily basis and attended prenatal care, in order to ensure her child would be born healthy. The celebration of the baby's life, amid so many deaths, had to be adjusted to the virtual environment. It was a tense, solitary, and ambiguous period, which demanded a lot from the mental health of some participants, but to others, brought advantages that would not have been possible in different times.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    The experience of pregnancy in the COVID-19 pandemic
  • Original Article

    Anemia levels in the preconception period and the first trimester of pregnancy: a national, multicentric and cross-sectional study

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:-e-rbgo1001
    02-13-2025

    Summary

    Original Article

    Anemia levels in the preconception period and the first trimester of pregnancy: a national, multicentric and cross-sectional study

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:-e-rbgo1001
    02-13-2025

    DOI 10.61622/rbgo/2025rbgo10001

    Views145

    Abstract

    Objective

    The study aimed to determine the level of anemia in pregnant women in the first trimester and in the preconception period by conducting nationwide research.

    Methods

    The study was designed as retrospective, cross-sectional, and multicenter research. A total of 17 centers from 13 provinces were included in the study. The study was conducted with the participation of two groups of patients who applied to the obstetrics polyclinic between 1 January 2023 and 1 July 2023, who were in the first trimester of pregnancy and who were in the preconception period planning pregnancy.

    Results

    In total 4,265 women were included in the study. Of these women, 3,884 (91%) were in the first trimester of their pregnancy and 381 (9%) were in the preconception period. Anemia was detected in 24.1% (n=1030) of the patients. Of these patients, 20.6% (n=877) were pregnant women in the first trimester and 3.6% (n=153) were in the preconception period. A statistically significant and positive relationship was found between anemia and meat consumption frequency, educational status, and socioeconomic status of the patients (p=0.000, p=0.000, p=0.000). In addition, a statistically significant and negative correlation was determined between anemia and the number of pregnancies and the parity number (p=0.001, p=0.000) in both groups.

    Conclusion

    Anemia is a public health problem. Anemia has been determined to be an important problem both in the preconception period and early periods of pregnancy. It is necessary to revise the programs and interventions to reduce the prevalence of anemia and redesign them in line with current conditions.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Anemia levels in the preconception period and the first trimester of pregnancy: a national, multicentric and cross-sectional study
  • Original Article

    A comparison of the efficacy of the effect of online versus face-to-face group counseling based on positive-approach on sexual intimacy of women after benign abdominal hysterectomy: a clinical trial

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo102
    01-23-2025

    Summary

    Original Article

    A comparison of the efficacy of the effect of online versus face-to-face group counseling based on positive-approach on sexual intimacy of women after benign abdominal hysterectomy: a clinical trial

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo102
    01-23-2025

    DOI 10.61622/rbgo/2024rbgo102

    Views199

    Abstract

    Objective

    The study investigates the influence of positive-approach counseling through both online and face-to-face group therapy on the sexual intimacy of women after benign complete abdominal hysterectomy, addressing challenges such as the loss of femininity and other psychosexual complications that disrupt the couple’s relationship post-surgery.

    Methods

    This is a parallel clinical trial, conducted in 2023 in Yazd, Iran; with sixty-six participants post- benign complete abdominal hysterectomy were randomly assigned to online and face-to-face counseling groups. Each group had eight 90-minute sessions, and data were collected using demographic and intimacy scale (IS) questionnaires at baseline, eighth week, and twelfth week follow-up. Statistical analysis used SPSS version 23 (P < 0.05).

    Results

    In the Online Group, the mean sexual intimacy score significantly increased from 72.42 ± 9.05 to 87.06 ± 7.98 at eight weeks and 90.30 ± 8.23 at twelve weeks (P < 0.001). In the Face-to-Face Group, the mean score increased from 70.21 ± 6.75 to 81.24 ± 5.55 at eight weeks and 85.03 ± 5.40 at twelve weeks (P < 0.001). Online counseling proved more effective than face-to-face counseling in enhancing sexual intimacy (P = 0.043).

    Conclusion

    Online and face-to-face counseling based on the positive approach improved sexual intimacy in women with a history of benign hysterectomy. Moreover, it seems that online counseling was more effective, so it is recommended that this method be employed in follow-up sessions after hysterectomy. Iranian Registry of Clinical Trials - IRCT20230209057373N1

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    A comparison of the efficacy of the effect of online versus face-to-face group counseling based on positive-approach on sexual intimacy of women after benign abdominal hysterectomy: a clinical trial
  • Original Article

    Comparison of serum ischemia modified albumin levels between preeclamptic and healthy pregnant women

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo97
    01-23-2025

    Summary

    Original Article

    Comparison of serum ischemia modified albumin levels between preeclamptic and healthy pregnant women

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo97
    01-23-2025

    DOI 10.61622/rbgo/2024rbgo97

    Views225

    Abstract

    Objective

    Our aims to compare level of serum ischemia modified albümin(IMA) between healthy and preeclamptic pregnancies and to evaluate the relationship of IMA with preeclampsia, preeclampsia severity and perinatal outcomes.

    Methods

    Our study is a prospective case-control study. A total of 134 pregnant women (66 preeclamptic and 68 healthy pregnant) between 18-45 years of age and between 24- 41 gestational weeks participated. Serum IMA levels were measured by the Albumin Cobalt Binding (ACB) test.

    Results

    The mean IMA values were found to be significantly higher in the preeclampsia group compared to the control group (p<0,001). Patients were divided into 3 groups; severe preeclampsia(n=29), non-severe preeclampsia(n=37) and healthy pregnant(n=68). Statistically significant difference was not found between severe preeclampsia and non-severe preeclampsia (p=0.505). The performance of IMA values in predicting the development of preeclampsia among all participants was evaluated with Receiver Operating Characteristic (ROC) analysis. According to the ROC analysis, the best cut-off value at which the maximum area under the curve (AUC) was obtained was found when IMA>0.98(AUC: 0.690 95% Confidence Interval (CI): 0.600-0.781 p<0.001). When IMA threshold value of >0.98 was taken to predict preeclampsia; the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were calculated as 65.15%, 64.71%, 64.18%, and 65.67%, respectively.

    Conclusion

    IMA level may be a useful new marker in recognizing and predicting preeclampsia. However, despite the power of recognizing the disease, serum IMA levels do not give an idea about the severity of the disease. More comprehensive studies are needed in order to use IMA levels in the diagnosis of preeclampsia.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • Original Article

    Maternal erythrocytosis as a risk factor for small for gestational age at term in high altitude

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo98
    01-23-2025

    Summary

    Original Article

    Maternal erythrocytosis as a risk factor for small for gestational age at term in high altitude

    Revista Brasileira de Ginecologia e Obstetrícia. 2025;47:e-rbgo98
    01-23-2025

    DOI 10.61622/rbgo/2024rbgo98

    Views196

    Abstract

    Objective

    To determine if maternal erythrocytosis is a risk factor for small-for-gestational age at term at 3,400-m altitude in pregnant women without intercurrent disease.

    Methods

    Analytical study of retrospective cohorts at Cusco, a city at 3,400-m altitude. Our participants were 224 and 483 pregnant women with and without exposure to maternal erythrocytosis, respectively. A logistic regression with the goodness of fit to the proposed model was also performed with the Hosmer and Lemeshow test, evaluating the small-for-gestational-age results with or without exposure to hemoglobin >14.5 g/dl.

    Results

    The incidence of small-for-gestational-age was 6.9% for this entire cohort. The maternal erythrocytosis during gestation without any maternal morbidity at 3,400-m altitude has an ORa=0.691 (p=0.271) for small-for-gestational-age at term. Inadequate prenatal control has an ORa=2.115 (p=0.016) for small-for-gestational-age compared to adequate prenatal control.

    Conclusion

    Maternal erythrocytosis in pregnant women without any morbidity is not a risk factor for small-for-gestational-age at 3,400 m-altitude.

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    This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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