Real-time ultrasound to assist during a vaginal breech delivery.

We report a novel application of intrapartum sonography, herein used to assist the internal podalic version and the vaginal delivery of a transverse-lying second twin. Following the vaginal delivery of the first cephalic twin, the internal podalic version was performed under continuous ultrasound vision, leading to the uncomplicated breech delivery of a healthy neonate.

Remifentanil for External Cephalic Version: A Systematic Review and Meta-Analysis.

The purpose of this study was to examine the efficacy of remifentanil on external cephalic version (ECV) in breech presentation. An extensive search was conducted using PubMed, Cochrane Library, and other grey literature. Only randomized controlled trials using remifentanil for ECV were included. Risk ratio (RR) and mean difference (MD) were used to estimate outcomes and quality of evidence was assessed using the Risk of Bias and GRADE system. Five studies consisting of 602 patients were analyzed. Remifentanil resulted in a moderate increase in ECV success rate (RR, 1.19; 95% CI, 1.00 to 1.43; P = .05), a large reduction of pain score (MD, -2.02; 95% CI, -2.32 to -1.72; P < .00001) with fewer transient fetal bradycardia (RR, 0.40; 95% CI, 0.19 to 0.85; P = .02). However, remifentanil did not affect cesarean section rates, (RR, 0.97; 95% CI, 0.49 to 1.93; P = .93) instrumental delivery (RR, 0.94; 95% CI, 0.41 to 2.15; P = 0.89), and spontaneous delivery rate (RR, 1.02; 95% CI, 0.78 to 1.35; P = 0.87). Mothers treated with remifentanil have a higher patient satisfaction score. The use of remifentanil may be a good strategy for ECV. However, extrapolation of this finding to clinical settings must consider the study limitations.

Undiagnosed uterine anomalies revealed by breech on ultrasound prior to external cephalic version - A chance to take a closer look.

OBJECTIVE: Uterine anomalies (UA) occur in up to 6.7% of women. Breech is eight times more likely to occur with UA which may not be diagnosed prior to pregnancy and may only be found in the third trimester with breech. The objective of the study is to assess the prevalence of both already known and newly sonographically diagnosed UA in breech from 36 weeks of gestation and its impact on external cephalic version (ECV), delivery options and perinatal outcomes. STUDY DESIGN: We recruited 469 women with breech at 36 weeks of gestation over a 2-year period at the Charité University Hospital, Berlin. Ultrasound examination was performed to rule out UA. Patients with known and newly 'de novo' diagnosed anomalies were identified and delivery options and perinatal outcomes analyzed. RESULTS: The 'de novo' diagnosis of UA at 36-37 weeks of pregnancy with breech was found to be significantly higher compared to the diagnosis prior to pregnancy with 4.5% vs 1.5% (p < 0.001 and odds ratio 4 with 95% confidence interval 2.12-7.69). Anomalies found included 53.6% bicornis unicollis, 39.3% subseptus, 3.6% unicornis and 3.6% didelphys. A trial of vaginal breech delivery was successful in 55.5% of cases when attempted. There were no successful ECVs. CONCLUSION: Breech is a marker for uterine malformation. Diagnosis of UA with breech can be up to four times improved with focused ultrasound screening in pregnancy even from 36 weeks of gestation prior to ECV to identify missed anomalies. Timely diagnosis aids antenatal care and delivery planning. Importantly, definitive diagnosis and treatment can be planned postpartum to improve outcomes in future pregnancies. ECV plays a limited role in selected cases.

Evaluating the effectiveness of lateral postural management for breech presentation: study protocol for a randomized controlled trial (BRLT study).

BACKGROUND: Breech presentation is observed in 3-4% at term of pregnancy and is one of the leading causes of cesarean section. There is no established treatment for breech presentation before 36 weeks. A retrospective cohort study was conducted to demonstrate that the lateral position is effective for breech presentation. However, there are no randomized controlled trials evaluating lateral position management for breech presentation. Here, we described the methodology of a randomized controlled trial of a cephalic version for breech presentation in the third trimester by lateral postural management (BRLT study). METHODS: The BRLT study is an open-label, randomized controlled trial with two parallel groups allocated in a 1:1 ratio to examine the lateral position management for breech presentation, as compared with expectant management care. An academic hospital in Japan will enroll 200 patients diagnosed with a breech presentation by ultrasonography between 28 + 0 weeks and 30 + 0 weeks. Participants in the intervention group will be instructed to lie on their right sides for 15 min three times per day if the fetal back was on the left side or lie on their left sides if the fetal back was on the right side. The instruction will be given every 2 weeks after confirmation of fetal position, and the lateral position will be instructed until the cephalic version, and after the cephalic version, the reverse lateral position will be instructed until delivery. The primary outcome is cephalic presentation at term. The secondary outcomes are cesarean delivery, cephalic presentation 2, 4, and 6 weeks after the instruction, and at delivery, recurrent breech presentation after cephalic version, and adverse effects. DISCUSSION: This trial will answer whether the lateral positioning technique is effective in treating breech presentation and, depending on the results, may provide a very simple, less painful, and safe option for treating breech presentation before 36 weeks, and it may impact breech presentation treatment. TRIAL REGISTRATION: UMIN Clinical Trials Registry UMIN000043613. Registered on 15 March 2021 https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000049800 .

External Validation of a Prediction Model for External Cephalic Version Success.

External cephalic version (ECV) success correlates with numerous maternal and pregnancy factors. A prior study developed an ECV success prediction model based on body mass index, parity, placental location, and fetal presentation. We performed external validation of this model using a retrospective cohort of ECV procedures from a separate institution between July 2016 and December 2021. Four hundred thirty-four ECV procedures were performed, with a 44.4% success rate (95% CI 39.8-49.2%), which was similar to the derivation cohort (40.6%, 95% CI 37.7-43.5%, P =.16). There were significant differences in patients and practices between cohorts, including the rate of neuraxial anesthesia (83.5% derivation cohort vs 10.4% our cohort, P <.001). The area under the receiver operating characteristic curve (AUROC) was 0.70 (95% CI 0.65-0.75), which was similar to that in the derivation cohort (AUROC 0.67, 95% CI 0.63-0.70). These results suggest the published ECV prediction model's performance is generalizable outside the original study institution.

Systematic review of the effectiveness of remifentanil in term breech pregnancies undergoing external cephalic version.

BACKGROUND: External cephalic version (ECV) is a moderately painful procedure used to turn a fetus from a non-vertex to cephalic position. This systematic review and meta-analysis compared intravenous remifentanil with other analgesia or no analgesia or placebo on the success rate and associated pain of ECV. METHODS: Systematic searches for randomised controlled trials using remifentanil during ECV for non-cephalic term singleton pregnancies were conducted in EMBASE, MEDLINE and the Cochrane Library to October 2021. The primary outcomes were successful ECV and maternal pain; secondary outcomes included mode of delivery and adverse effects. The Cochrane Risk of Bias tool was used and meta-analysis undertaken if there were ≥2 comparable studies. RESULTS: Four trials were identified, three placebo-controlled and one vs no analgesia, totalling 482 participants. Comparisons against nitrous oxide or neuraxial anaesthesia were not analysed. Two studies had a low overall risk of bias, and two had some concern for bias. Remifentanil compared with placebo increased the success of ECV by 43% (risk ratio [RR] 1.43; 95% confidence interval [CI] 1.14 to 1.78). Pain scores (0-10) were lower (mean difference -1.97; 95% CI -2.49 to -1.46) whilst there was no impact on caesarean delivery rate (RR 0.97; 95% CI 0.81 to 1.17). Adverse events were rare, with fetal bradycardia observed less often with remifentanil than placebo. CONCLUSIONS: Remifentanil increases the procedural success of ECV and reduces pain compared with placebo. Trials were at low risk of bias and contained a sufficient number of participants to have reasonable confidence in this finding.

Predictive factors for successful external cephalic version with regional anesthesia.

AIM: We aimed to investigate predictive factors of successful external cephalic version (ECV) using regional anesthesia. METHODS: In this retrospective study, we included women who underwent ECV at our center from 2010 to 2022. The procedure had been conducted using regional anesthesia and the administration of intravenous ritodrine hydrochloride. The primary outcome was the success of ECV, which was defined as the rotation from a non-cephalic to a cephalic presentation. Primary exposures were maternal demographic factors and ultrasound findings at ECV. To determine predictive factors, we conducted a logistic regression analysis. RESULTS: Of 622 pregnant women who underwent ECV, missing data on any variables (n = 14) were excluded and the remaining 608 were analyzed. The success rate during the study period was 76.3%. Multiparous women had significantly higher success rates than primiparous women (adjusted odds ratio [OR]: 2.06 [95% confidence interval (CI): 1.31-3.25]). Women with a maximum vertical pocket (MVP) of <4 cm had significantly lower success rates than those with 4 cm < MVP ≤6 cm (OR: 0.56 [95% CI: 0.37-0.86]). The non-anterior placental location was associated with higher success rates than the anterior placental location (OR: 1.46 [95% CI: 1.00-2.17]). CONCLUSIONS: Multiparity, MVP >4 cm, and non-anterior placental locations were associated with successful ECV. These three factors could be useful for patient selection for successful ECV.

Breech presentation induction compared to cephalic presentation: Effectiveness and characteristics.

INTRODUCTION: The objective of our study was to compare the effectiveness of induction in cephalic presentations to that of breech presentations as well as the characteristics of the latter and the maternal-fetal morbidity and mortality. MATERIAL AND METHODS: This was a single-center retrospective study carried out at the Lille University Hospital in the Jeanne de Flandre Maternity Hospital including all patients with a breech fetus for whom an induction was indicated beyond 37 weeks of gestation between January 2014 and December 2020. A matching was performed to include 2 cephalic presentations for one breech presentation. The primary outcome was successful induction defined by two things: passage into the active phase (cervical dilatation > 5 cm) and vaginal delivery. RESULTS: 101 inductions of breech presentations were included and matched to 202 cephalic presentations. After adjustment by BISHOP score, there was no significant difference in the caesarean section rate between the two groups (25.7% in cephalic vs 33.7% in breech, OR 0.67 [CI95% 0.38-1.18]) or in the rate of transition to active phase (80.7% in cephalic vs 82.2% in breech, OR 1.26 [CI95% 0.65-2.44]). Post-partum blood loss was not significantly different between the two groups (14.4% in cephalic vs 12.9% in breech, OR 1.22 [CI95% 0.57-2.57]). Moderate neonatal acidosis was more frequent in the breech group (6,4% in cephalic vs 15,8% in breech, OR 3.04 [CI95% 1.38-6.71]). CONCLUSION: Induction of breech births beyond 37 weeks of gestation appeared to be as effective as induction of cephalic presentations. There was no difference in the rate of caesarean section and transition to active labor. Maternal morbidity was not increased.

External cephalic version success rate and associated factors: Experience from a tertiary center in Sub-Saharan Africa: A cross-sectional study.

OBJECTIVE: To determine the success rate of external cephalic version (ECV) and its associated factors in an Ethiopian setting. MATERIAL AND METHODS: A total of 152 ECVs performed at the St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia from June 1, 2018, up to March 30, 2019, were analyzed, using a prospective cross-sectional study design. Data were analyzed using SPSS version 21. Chi-square test of association was applied for categorical data analysis. Multivariate logistic regression analysis was used to determine predictors of success of ECV. Odds ratio, 95% CI, and P-value<0.05 were used to describe findings' significance. RESULTS: The success rate of ECV was 71.7%. ECV success rate did not differ between multiparous and nulliparous (AOR = 1.4, 95% CI 0.07-2.35), according to abdominal wall thickness status (AOR = 3.5, 95% Cl 0.29-42.40), and between unengaged and engaged presenting part (AOR = 1.1, 95% CI 0.26-4.74). A posterior placenta was associated with ECV success compared to anterior placenta (AOR = 1.14, 95% CI 1.03-2.60). Likewise, cases that experience no pain was associated with a higher ECV success rate (AOR 14.68, 95% CI 1.65-34.97). Soft uterine tone was also associated with a higher success rate compared to tense uterine tone (AOR = 3.89, 95% CI 0.02-0.39). Eighty-four percent of those mothers who had successful ECV had spontaneous vertex vaginal delivery. CONCLUSION: The success rate of ECV in this study is found to be 71.7%, which is higher than reports from previous studies. Absence of pain during the procedure, posterior placenta, and soft uterine tone were associated with successful ECV.

Changes in fetal presentation in the preterm period and the prediction of non-cephalic delivery.

OBJECTIVE: Since fetal presentation is an essential factor for planning mode of delivery, the estimation of fetal presentation at delivery is important in prenatal management. This study aimed to clarify the transition of fetal presentation during pregnancy and to propose practical strategy to predict final fetal presentation. METHODS: During the period of 2 years, fetal presentations were analyzed using ultrasonography during the prenatal visits at and after 22 weeks of gestation in a single facility. The relationship between the transition of fetal presentation and final presentation at delivery was analyzed. Further, a prediction model was developed to predict the final fetal presentation at birth. RESULTS: Among 1737 singleton pregnancies with full-term delivery, non-cephalic delivery occurred in 76 pregnancies (4.4%). Non-cephalic presentation in later half of the gestational period was associated with low incidence of spontaneous cephalic version. Furthermore, we found that in 46% of women with a final non-cephalic delivery, the non-cephalic presentation continued during whole of the observational period without spontaneous cephalic version. Based on the analyzed data of this cohort, we show that in a group of women with non-cephalic presentation at 35/36 weeks, the best predictability for spontaneous cephalic version depended on whether the cephalic presentation was observed at least once at and after 30 weeks of gestation. CONCLUSION: Our findings suggest that information on the changes in fetal presentation during gestation contributes to the prediction of the fetal presentation at delivery and planning mode of delivery.

Depression, anxiety and stress in women with breech pregnancy compared to women with cephalic presentation-a cross-sectional study.

PURPOSE: This study aims to evaluate the level of psychological distress for women with breech compared to cephalic presentation. We hypothesized, that women with breech presentation have higher levels of depression, stress and anxiety. Secondary objectives were to analyze potential demographic risk factors and comorbidity of psychological distress in breech pregnancy. METHODS: The breech study group was formed by 379 women with breech presentation. A sample of 128 women with cephalic presentation was recruited during routine clinical care. Depression, anxiety and stress symptoms were ascertained by means of the Depression-Anxiety-Stress-Score (DASS)-21 questionnaire. Categorial data was analyzed with Chi-square or exact test, continuous data with unpaired t test or Mann-Whitney U test. Demographic risk factors were identified using a binary logistic regression model. RESULTS: Prevalence of psychological distress among women with breech was not higher compared to those of other pregnant women. Symptomatic depression, anxiety and stress affected 5.8%, 14.5% and 11.9% of women with breech, respectively. Decreasing age was identified as a risk factor for anxiety (p = 0.006). Multiparity increased risk for depression (p = 0.001), for anxiety (p = 0.026) and for perinatal stress (p = 0.010). More than 80% of women with depressive symptoms had comorbidities of psychological distress. CONCLUSIONS: Breech presentation compared to cephalic presentation was not associated with higher levels of psychological distress. However, breech pregnancies are affected by symptoms of potential mental disorder. Multiparous women and younger women may need additional support and would benefit from a standardized screening tool for the assessment of perinatal psychological distress. CLINICAL TRIAL REGISTRATION: Ethical approval (EA2/241/18) was granted by the Ethics Commission of the Charité University Hospital on the 23.01.2019 (ClinicalTrials.gov Identifier: NCT03827226).

Predictive Factors for Successful Vaginal Delivery after a Trial of External Cephalic Version: A Retrospective Cohort Study of 946 Women.

OBJECTIVE: Our aim was to find the factors which predict a vertex presentation of vaginal delivery (VD) in women who are admitted for a trial of external cephalic version (ECV). STUDY DESIGN: This is a retrospective cohort study of women who underwent a trial of ECV and delivered between November 2011 and December 2018 in a single tertiary center. The main outcome measure was successful VD of a fetus in the vertex presentation. Women who achieved VD in the vertex presentation or underwent cesarean delivery were compared on the basis of variety of predictive factors. Adverse neonatal and maternal outcomes were reported. Logistic regression was used for the multivariate analysis. RESULTS: A total of 946 women were included; 717 (75.8%) women had a successful ECV and 663 (70.1%) women had a VD in the vertex presentation. Parous women had 79.3% VD rate (570/719) and nulliparous women had 41.0% VD rate (93/227). Women with an amniotic fluid index (AFI) of 50 to 79, 80 to 200, and >200 mm had 34.8, 71.0, and 83.1% VD rate, respectively. Parous versus nulliparous women had an adjusted odds ratio (aOR) of 5.42 (95% confidence interval [CI]: 3.90-7.52, p < 0.001), women with AFI 50 to 79 mm compared with AFI 80 to 200 mm had an aOR of 0.21 (95% CI 0.12-0.37, p < 0.001), and women with an AFI >200 mm compared with AFI 80 to 200 mm had an aOR of 1.74 (95% CI: 1.03-2.92, p = 0.037) to achieve VD. The final prediction model for the chances of a VD based on data on admission for ECV was reported. The Hosmer-Lemeshow test was used to evaluate the goodness of fit of the model (p = 0.836). CONCLUSION: Being parous and having an AFI >200 mm are positive independent predictive factors for achieving VD of a vertex presenting fetus after ECV. Whereas AFI 50 to 79 mm is a negative independent predictive factor. KEY POINTS: · The goal of ECV is to achieve a vertex VD.. · Predictors for ECV success might not predict a VD.. · Parity & AFI independently predict a VD after ECV..

YouTube as a source of patient information on external cephalic version.

OBJECTIVES: To assess the quality and content of information regarding external cephalic version on YouTube. METHODS: YouTube was searched using the phrase "external cephalic version" (ECV) to identify informative videos by two independent reviewers. Videos were included if: (1) in English; (2) available November 20, 2021; (3) related to ECV. Videos were excluded if: (1) duration exceeded 15 min; (2) target audience was not patients or the general public; (3) not in English; (4) were advertisements or news clips; (5) did not relate to ECV. The Global Quality Scale was used to assess overall quality of selected videos. A content score was developed based on guidelines from the American College of Obstetricians and Gynecologists. Video quality was also categorized as "slightly useful", "useful" and "very useful". The Patient Education Materials Assessment Tool (PEMAT) for audiovisual materials was used to score understandability and actionability. RESULTS: Of 60 videos screened, 31 met inclusion criteria. They were classified as People or Blogs (n=19, 61%) or Education (n=12, 39%). Videos were calculated to be "slightly useful" (n=10, 32%), "useful" (n=18, 58%), or "very useful" (n = 3, 10%). The PEMAT - understandability was less in the "slightly useful" compared to the combined "useful" and "very useful" groups, p<0.01. No differences existed between total usefulness score and category, p=0.6. CONCLUSIONS: Most videos were useful, but few were very useful. These results highlight the importance of thorough counseling regarding this procedure.

Maternal race/ethnicity impacts the success rates of external cephalic version (ECV) in the United States.

OBJECTIVES: Racial and ethnic disparities in obstetrics are prevalent in the United States (US). We aimed to assess whether the success rate of external cephalic version (ECV) is affected by maternal race/ethnicity. METHODS: We conducted a retrospective analysis based on the CDC Natality Live Birth database for 2016-2018. We compared the success rates of ECV across US pregnant women of different racial/ethnic groups (non-Hispanic Whites, non-Hispanic Blacks, non-Hispanic Asians, and Hispanics) using the Pearson chi-square test and used multivariate logistic regression to control for confounding variables. Statistical signiciance was determined as p<0.05 and results were displayed as adjusted odds ratios (aOR) with 95% confidence intervals (95% CI). RESULTS: Of the 11,150,527 births, 26,255 women underwent an ECV and met inclusion criteria. The overall ECV success rate was 52.75% (13,850 women). Non-Hispanic Blacks had the highest ECV success rate (64.52%), followed by Hispanics (59.21%) and non-Hispanic Asians (55.51%). These rates were significantly higher than those of non-Hispanic Whites (49.27%, p<0.001). Non-Hispanic Blacks were associated with the highest success rate compared to non-Hispanic Whites (adjusted OR 1.95, 95% CI 1.77-2.15). CONCLUSIONS: The success rate of ECV varies among different maternal racial/ethnic groups. Non-Hispanic White women have the lowest ECV success rate, while non-Hispanic Black women have the highest ECV success rate.

Factors influencing the effect of external cephalic version: a retrospective nationwide cohort analysis.

OBJECTIVE: This study aims to assess the factors associated with the success and failure rate of the external cephalic version (ECV) in breech fetuses. Secondary outcomes were fetal presentation in labor and mode of delivery. METHODS: This cross-sectional study examined the live birth certificates from 2003 through 2020 from US states and territories that implemented the 2003 revision. A total of 149,671 singleton pregnancies with information about ECV success or failure were included. The outcome was ECV success/failure, while the exposures were possible factors associated with the outcome. RESULTS: The successful ECV procedures were 96,137 (64.23%). Among the successful ECV procedures, the prevalence of spontaneous vaginal delivery was 71.63%. Among the failed ECV procedures, 24.74% had a cephalic presentation at delivery, but 63.11% of these pregnancies were delivered by cesarean section. Nulliparity, female sex, low fetal weight centile, high pre-pregnancy BMI, high BMI at delivery, and high maternal weight gain during pregnancy were associated with an increased ECV failure (p < 0.001). African American, American Indian and Alaska Native race categories were significant protective factors against ECV failure (p < 0.001). Maternal age had a U-shape risk profile, whereas younger maternal age (< 25 years) and old maternal age (> 40 years) were significant protective factors against ECV failure (p < 0.001). CONCLUSIONS: A high prevalence of successful ECV procedures and subsequent spontaneous vaginal delivery were found. The present results found nulliparity, maternal race, maternal age, female fetal sex, low fetal weight, and maternal anthropometric features correlated to ECV results. These findings can potentially improve the knowledge about the factors involved in ECV, allowing more informed counseling to the women undergoing this procedure.

Do specific maternal sensations experienced in late pregnancy correlate to a breech presenting baby? Evaluation of a simple maternal questionnaire.

OBJECTIVES: To investigate the effectiveness of a structured questionnaire completed at 36 weeks gestation in predicting breech presentation. DESIGN: Questionnaire-based study. SETTING: Tertiary NHS Foundation Trust. PARTICIPANTS: Women attending for a universally offered 36-week fetal growth scan. INTERVENTION: Completion of a previously designed maternal questionnaire detailing sensation of fetal movements during the past week, immediately before a routine growth scan. RESULTS: Between September 01, 2018 and September 30, 2019, 2341 questionnaires were handed out and 2053 were returned. Analysis was performed in 1938 (94.4%) completed questionnaires. Recorded presentation was breech in 109 (5.6%), transverse/oblique in 15 (0.8%), and cephalic in 1814 (93.6%). Women "thinking their baby was breech" had a high positive likelihood ratio, at 11.8 (95% CI 7.4-19.1), but poor sensitivity (27.3%). "Feeling kicks low down or near the bladder" was sensitive for non-cephalic presentation (76.3%) but with poor specificity (48.9%). The questions "kicks low" ("no") (P = 0.013, aOR 2.18 [1.18-4.04]) and 'thinks cephalic ("no")' (P = 0.001, aOR 0.12 (0.04-0.43) were independent risk factors for a non-cephalic presentation. CONCLUSIONS: The questions posed in this questionnaire could aid the detection of breech presentation, but do not perform better than published data on palpation. Missing a breech presentation near term through palpation alone is well reported. Combining the concept of palpation to exclude breech presentation and these questions may help focus a clinician and improve both palpation skills and breech detection. As a minimum, a woman who believes her baby is breech should be taken seriously.

Impact of full vs empty urinary bladder on external cephalic version success: a randomized controlled trial.

BACKGROUND: External cephalic version is a procedure used to turn a fetus from a breech position to a cephalic position before delivery. The success rate of the external cephalic version can be affected by various factors; however, the effect of bladder volume on the success rate of the external cephalic version remains controversial. OBJECTIVE: This study aimed to determine the effect of urinary bladder status (full or empty) on the success rate of the external cephalic version through a prospective randomized study. STUDY DESIGN: This was a prospective randomized controlled trial conducted at a tertiary care obstetrical center. Overall, 70 women with a singleton breech presentation at term undergoing external cephalic version were randomly allocated into 2 groups: external cephalic version with an empty bladder and external cephalic version with a full bladder. The external cephalic version procedure was performed by experienced obstetricians under ultrasound guidance. The primary outcome was the success rate of the external cephalic version. RESULTS: The success rate of the external cephalic version was 67.56% (25/37) in the full bladder group and 54.54% (18/33) in the empty bladder group, with no statistically significant difference between the groups (P=.26). In addition, the relative risk of successful external cephalic version was 1.23 (95% confidence interval, 0.84-1.81), indicating no significant difference. CONCLUSION: This randomized controlled trial demonstrated that the presence of a full or empty urinary bladder does not significantly affect the success rate of the external cephalic version in women with singleton breech presentation at term. Our findings suggest that women undergoing an external cephalic version do not need to have a full bladder to improve the success rate of the procedure.

Management of breech presentation with a large pelvic hydatid cyst in late pregnancy in Tibet: a case report.

BACKGROUND: Hydatid cystic disease (HCD) is primarily a disease of sheep and cattle. Human beings are accidental hosts. It is prevalent in the Tibet Autonomous Region (TAR) of China. In pregnancy, it can cause many complications. CASE PRESENTATION: We present a multigravida with breech presentation at 37 weeks of pregnancy in whom a large pelvic hydatid cyst and multiple hepatic hydatids were diagnosed by ultrasonography. The large pelvic hydatid cyst was drained through the posterior fornix under the guidance of ultrasound, and an external cephalic version was performed. A healthy baby was delivered vaginally with head presentation at term. CONCLUSION: HCD during pregnancy presents with management difficulty. It is important to formulate individualized treatment plans according to the actual situation of the patient and the local level of treatment.