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Kato K, Nagamatsu T, Yamaguchi S, Ichinose M, Sayama S, Toshimitsu M, Seyama T, Kumasawa K, Iriyama T, Osuga Y. Changes in fetal presentation in the preterm period and the prediction of non-cephalic delivery. J Matern Fetal Neonatal Med 2023; 36:2141564. [PMID: 36328973 DOI: 10.1080/14767058.2022.2141564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
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.
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Affiliation(s)
- Kosuke Kato
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takeshi Nagamatsu
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shogo Yamaguchi
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Mari Ichinose
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Seisuke Sayama
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masatake Toshimitsu
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takahiro Seyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Keiichi Kumasawa
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takayuki Iriyama
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
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Ha TK, Lamar R, Blat C, Rosenstein MG. External cephalic version: Success rates with and without nitrous oxide. Eur J Obstet Gynecol Reprod Biol 2022; 272:156-159. [PMID: 35316745 DOI: 10.1016/j.ejogrb.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 02/12/2022] [Accepted: 03/01/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND External cephalic version (ECV) is a technique used to reduce the incidence of cesarean deliveries due to malpresentation. Nitrous oxide is an inhaled analgesic that may be used for pain relief for women undergoing external cephalic version. OBJECTIVE To compare the conversion rate of non-cephalic to cephalic presentation in ECV with and without nitrous oxide. STUDY DESIGN A retrospective cohort analysis was performed including all singleton, term gestation ECVs between January 2016 and June 2017 at a single institution. Multivariable logistic regression was used to compare women who had ECV with nitrous oxide versus ECV without nitrous oxide. The primary outcome was successful rate of conversion to cephalic presentation and the secondary outcome was the rate of vaginal delivery. RESULTS During the study period, 167 women underwent ECV: 77 with nitrous oxide and 90 without nitrous oxide. Of the 77 women who used nitrous oxide, 25 (32.5%) were successful and 17 of these women delivered vaginally (68%). Of the women who underwent ECV without nitrous oxide, 29 (32.2%) successfully converted and 21 of these delivered vaginally (72%). After controlling for confounders, the use of nitrous oxide had no clinically or statistically significant difference on ECV success rates (OR 1.08, 95% CI 0.52-2.23). CONCLUSION Nitrous oxide does not seem to affect conversion rate to cephalic presentation in ECV. Further studies are needed to determine the impact of nitrous oxide on women's decision to undergo ECV and on patient satisfaction and tolerability.
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Affiliation(s)
- Thoa K Ha
- Division of Maternal-Fetal Medicine, Department of Gynecology and Obstetrics, Emory School of Medicine, Atlanta, GA, United States.
| | - Robyn Lamar
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, United States
| | - Cinthia Blat
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, United States
| | - Melissa G Rosenstein
- Division of Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, United States
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Athiel Y, Girault A, Le Ray C, Goffinet F. Association between hospitals' cesarean delivery rates for breech presentation and their success rates for external cephalic version. Eur J Obstet Gynecol Reprod Biol 2022; 270:156-163. [DOI: 10.1016/j.ejogrb.2022.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Accepted: 01/08/2022] [Indexed: 11/17/2022]
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Zielbauer AS, Louwen F, Jennewein L. External cephalic version at 38 weeks' gestation at a specialized German single center. PLoS One 2021; 16:e0252702. [PMID: 34460836 PMCID: PMC8405029 DOI: 10.1371/journal.pone.0252702] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 05/20/2021] [Indexed: 11/18/2022] Open
Abstract
Introduction Cesarean section (CS) rates are increasing worldwide. One constant indication is the breech presentation at term. By offering external cephalic version (ECV) and vaginal breech delivery CS rates can be further reduced. Objective This study aimed to analyze the ECV at 38 weeks of gestation with the associate uptake rate, predicting factors, success rate, and complications at a tertiary healthcare provider in Germany specializing in vaginal breech delivery. Methods We conducted a prospective cohort study with retrospective data acquisition. All women with a singleton fetus in breech presentation presenting after 34 weeks of gestation for counseling between 2013 and 2017 were included. ECV impact factors were analyzed using logistic regression. Results A total of 1,598 women presented for breech birth planning. ECV was performed on 353 patients. The overall success rate was 22.4%. A later week of gestation (odds ratio [OR] 1.69), an abundant amniotic fluid index (AFI score) (OR 5.74), fundal (OR 3.78) and anterior (OR 0.39) placental location, and an oblique lie (OR 9.08) were significantly associated with successful ECV in our population. No major complications were observed. The overall vaginal delivery rates could be increased to approximately 14% with ECV. Conclusion The demand for alternative birth modes other than CS for breech birth is high in the area of Frankfurt, Germany. Our study offers evidence of the safety of ECV at 38 weeks. Centers with expertise in vaginal breech delivery and ECV can reduce CS-rates. To further establish vaginal breech delivery and ECV as alternate options, the required knowledge and skill should be implemented in the revised curricula.
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Affiliation(s)
- Ann-Sophie Zielbauer
- Department of Gynecology and Obstetrics, School of Medicine, Goethe-University, Frankfurt, Germany
- * E-mail:
| | - Frank Louwen
- Department of Gynecology and Obstetrics, School of Medicine, Goethe-University, Frankfurt, Germany
| | - Lukas Jennewein
- Department of Gynecology and Obstetrics, School of Medicine, Goethe-University, Frankfurt, Germany
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Heath A, Myriam Hunink MG, Krijkamp E, Pechlivanoglou P. Prioritisation and design of clinical trials. Eur J Epidemiol 2021; 36:1111-1121. [PMID: 34091766 PMCID: PMC8629779 DOI: 10.1007/s10654-021-00761-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 05/10/2021] [Indexed: 11/30/2022]
Abstract
Clinical trials require participation of numerous patients, enormous research resources and substantial public funding. Time-consuming trials lead to delayed implementation of beneficial interventions and to reduced benefit to patients. This manuscript discusses two methods for the allocation of research resources and reviews a framework for prioritisation and design of clinical trials. The traditional error-driven approach of clinical trial design controls for type I and II errors. However, controlling for those statistical errors has limited relevance to policy makers. Therefore, this error-driven approach can be inefficient, waste research resources and lead to research with limited impact on daily practice. The novel value-driven approach assesses the currently available evidence and focuses on designing clinical trials that directly inform policy and treatment decisions. Estimating the net value of collecting further information, prior to undertaking a trial, informs a decision maker whether a clinical or health policy decision can be made with current information or if collection of extra evidence is justified. Additionally, estimating the net value of new information guides study design, data collection choices, and sample size estimation. The value-driven approach ensures the efficient use of research resources, reduces unnecessary burden to trial participants, and accelerates implementation of beneficial healthcare interventions.
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Affiliation(s)
- Anna Heath
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, ON, Canada.,Division of Biostatistics, University of Toronto, Toronto, ON, Canada.,Department of Statistical Science, University College London, London, UK
| | - M G Myriam Hunink
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, Netherlands. .,Department of Radiology, Erasmus MC, University Medical Center, Rotterdam, Netherlands. .,Netherlands Institute for Health Sciences, Erasmus MC, University Medical Center, Rotterdam, Netherlands. .,Center for Health Decision Science, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Eline Krijkamp
- Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, Netherlands.,Netherlands Institute for Health Sciences, Erasmus MC, University Medical Center, Rotterdam, Netherlands
| | - Petros Pechlivanoglou
- Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, ON, Canada.,Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, ON, Canada
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Cillard L, Verhaeghe C, Spiers A, Madzou S, Descamps P, Legendre G, Corroenne R. External cephalic version: Predictors for success. J Gynecol Obstet Hum Reprod 2021; 50:102165. [PMID: 34004364 DOI: 10.1016/j.jogoh.2021.102165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/02/2021] [Accepted: 05/11/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The objective of this study was to identify the factors predictive of the success of external cephalic version (ECV). METHODS A single-centre retrospective observational study was performed in the maternity ward of the Angers University Hospital, France, between January 2010 and May 2020. The study included all patients (n = 613) for whom an ECV was performed for a breech or transverse foetus. The primary endpoint was measured by the success of the ECV, defined by the visualisation, using pelvic ultrasound, of the foetus in cephalic presentation immediately after the manoeuvre. Following to the ECV, the cohort was separated into two groups; ECV Success and ECV Failure. In order to determine the predictive factors of success, a logistic regression model was performed, including the parameters of: parity, foetal presentation during ECV, the side of the foetal back, placental location, type of operator and maternal age. The results are presented as (odds ratio [confidence intervals]; p-value). The significance threshold was defined by a p-value < 0.05. RESULTS The ECV success rate was 21.4% (131/613). The factors predictive of the success of ECV were: transverse foetal presentation (2.7 [1.3-5.6]; p<0.01); a senior physician operator (1.6 [1.2-2]; p<0.01); multiparity (1.6 [1.2-2]; p<0.01); non anterior placental localization (1.4 [1.1-2]; p<0.01). A number of attempts greater than 3 were significantly associated with reduced chances of success (0.3 [0.2-0.4]; p<0.01). CONCLUSION The study shows that transverse foetal presentation, a senior physician operator, multiparity, as well as a non-anterior placental location are factors predictive of the success of ECV. Knowledge of these factors can improve the information given to patients.
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Affiliation(s)
- Léa Cillard
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France
| | - Caroline Verhaeghe
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France
| | - Andrew Spiers
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France
| | - Sebastien Madzou
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France
| | - Philippe Descamps
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France
| | - Guillaume Legendre
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France
| | - Romain Corroenne
- Department of Obstetrics & Gynecology, University Hospital of Angers, Angers, France.
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Abstract
In the United States, there is a widespread belief that the overall cesarean birth rate is higher than necessary. Efforts are being directed toward decreasing the number of these procedures, in part by encouraging physicians to make changes in their management practices. Because breech presentations are associated with a high rate of cesarean birth, there is renewed interest in techniques such as external cephalic version (ECV) and vaginal breech delivery. The purpose of this document is to provide information about ECV by summarizing the relevant evidence presented in published studies and to make recommendations regarding its use in obstetric practice.
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Dochez V, Esbelin J, Misbert E, Arthuis C, Drouard A, Badon V, Fenet O, Thubert T, Winer N. Effectiveness of nitrous oxide in external cephalic version on success rate: A randomized controlled trial. Acta Obstet Gynecol Scand 2019; 99:391-398. [PMID: 31630398 DOI: 10.1111/aogs.13753] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 10/10/2019] [Accepted: 10/15/2019] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Approximately 4% of singleton pregnancies at term are in breech presentation. External cephalic version (ECV) can reduce the risks of noncephalic birth and cesarean delivery, but this maneuver can be painful. Our aim was to analyze the effect of administering inhaled nitrous oxide for analgesia on the ECV success rate. MATERIAL AND METHODS This prospective, randomized, single-blind, controlled trial included women with singleton pregnancies in breech presentation at term who were referred for ECV in a tertiary care center. Women were assigned according to a balanced (1:1) restricted randomization design to inhale either nitrous oxide (N2 O) in a 50:50 mix with oxygen or medical air during the procedure. The main outcomes reported are the ECV success rate, degree of pain, adverse event rate, and women's satisfaction. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01948115. RESULTS The study included 150 women (nitrous oxide group: n = 74; medical air: n = 76). Inhaled nitrous oxide was not associated with a higher ECV success rate than medical air (24.3 vs 19.7%, P = 0.51). Among parous women (n = 34 in each group), the ECV success rate appeared higher in the nitrous oxide group, respectively 47.1% (n = 16) vs 23.5% (n = 8) (P = 0.042). Neither the median pain level nor adverse event rates differed significantly in women with inhaled nitrous oxide compared with medical air. CONCLUSIONS Use of an equimolar mixture of oxygen and nitrous oxide during ECV appears safe. Although it does not seem to change the overall success rate, it may increase success in parous women.
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Affiliation(s)
- Vincent Dochez
- Department of Gynecology and Obstetrics, University Hospital of Nantes, Nantes, France.,Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
| | - Julie Esbelin
- Department of Gynecology and Obstetrics, University Hospital of Nantes, Nantes, France
| | - Emilie Misbert
- Department of Gynecology and Obstetrics, University Hospital of Nantes, Nantes, France.,Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
| | - Chloé Arthuis
- Department of Gynecology and Obstetrics, University Hospital of Nantes, Nantes, France.,Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
| | - Anne Drouard
- Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
| | - Virginie Badon
- Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
| | - Olivier Fenet
- Biometrics and Biostatistics Platform, University Hospital of Nantes, Nantes, France
| | - Thibault Thubert
- Department of Gynecology and Obstetrics, University Hospital of Nantes, Nantes, France.,Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
| | - Norbert Winer
- Department of Gynecology and Obstetrics, University Hospital of Nantes, Nantes, France.,Clinical Investigation Center (CIC), University Hospital of Nantes, Nantes, France
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Ducarme G. [Breech Presentation: CNGOF Guidelines for Clinical Practice - External Cephalic Version and other Interventions to turn Breech Babies to Cephalic Presentation]. ACTA ACUST UNITED AC 2019; 48:81-94. [PMID: 31678503 DOI: 10.1016/j.gofs.2019.10.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To provide guidelines regarding efficiency and safety of external cephalic version (ECV) attempt and alternatives methods to turn breech babies to cephalic presentation. METHODS MedLine and Cochrane Library databases search in French and English and review of the main foreign guidelines between 1980 and 2019. RESULTS ECV is associated with a decreasing rate of breech presentation at birth (LE2), and potentially with a lower rate of cesarean section (LE3) without an increase of severe maternal (LE3) and perinatal morbidity (LE3). It is therefore recommended to inform women with a breech presentation at term that ECV should be attempt (Professional consensus). ECV attempt should be performed with immediate access to an operating room for emergency cesarean (Professional consensus). The ECV attempt before 37 weeks, compared to ECV attempt after 37 weeks, increases the rate of cephalic presentation at birth (LE2) but with a small increase risk of moderate prematurity (LE2). ECV attempt should be performed from 36SA (Professional consensus). The main factors associated with successful ECV attempt are multiparity (LE3) and no maternal obesity (LE3). Parenteral tocolysis (β mimetic or atosiban), for ECV attempt at term is associated with a higher success rate (LE2), higher rate of achieved cephalic presentation in labor (LE2) and a lower cesarean section rate (LE2). It is recommended to use parenteral tocolysis for ECV attempt at term in order to increase its success rate (grade B). The ECV attempt is associated with an increase in transient FHR abnormalities (LE3), it is therefore recommended that cardiotocography should be performed prior and during 30minutes after the procedure (Professional consensus). There is no argument for recommending the practice of delayed cardiotocography after ECV attempt (Professional consensus). The risk of significant positivity (>30mL) of the Kleihauer test after ECV attempt is low (<0.1%) (LE3), it is not recommended to systematically perform a Kleihauer test after ECV attempt (professional consensus). In case of RH-1 negative women, it is recommended to ensure systematic RH-1 prophylaxis (Professional consensus). In case of breech presentation at term, acupuncture, moxibustion and postural methods are not effective in reducing breech presentation at birth (LE2), and are therefore not recommended (Grade B). CONCLUSION According to the clear benefits and the low risks of ECV attempt, all women with a breech presentation at term should be informed that ECV should be attempted to decrease breech presentation at birth and cesarean section.
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Affiliation(s)
- G Ducarme
- Service de gynécologie-obstétrique, centre hospitalier départemental, Les Oudairies, 85000 La Roche-sur-Yon, France.
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Fullerton J, Butler M, Aman C, Reid T. Global competencies for midwives: external cephalic version; ultrasonography, and tobacco cessation intervention. Women Birth 2018; 32:e413-e420. [PMID: 30174206 DOI: 10.1016/j.wombi.2018.08.166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 08/17/2018] [Accepted: 08/21/2018] [Indexed: 11/16/2022]
Abstract
PROBLEM AND BACKGROUND The International Confederation of Midwives (ICM) conducts regular updates to the Essential Competencies for Basic Midwifery Practice to determine the introduction or retention of items in the global scope of midwifery practice guidance document. AIM This article presents the review process that underpinned the deliberation about three specific clinical practices: external cephalic version, prenatal ultrasonography, and tobacco cessation interventions that occurred during the 2016-2017 global update study. METHODS A brief outline of the research methodology used in the 2016-2017 study is provided. Literature summaries about safety and effectiveness of three clinical skills are offered. Data addressing global and regional variations in support of each practice and final disposition of the items are documented. FINDINGS External cephalic version did not receive sufficient document support for inclusion in the initial list of items to be tested in the study. Prenatal ultrasonography was supported as an advanced (76.6%) or country-specific (18.8%) skill that midwives could acquire, to promote wider global access for pregnant women. Midwives' participation in tobacco cessation counselling was supported (≥85%) in each of ICM's regions. Knowledge about World Health Organization recommendations for nicotine replacement therapy was endorsed as an additional (62.4%) or country-specific (29.3%) skill. DISCUSSION AND CONCLUSION The current evidence of safety of midwives performing external cephalic version led to the recommendation that it be considered in the next document update. Conflicting views of midwives' role in acquiring skills to conduct prenatal ultrasound were evident. There was strong support for participation in smoking cessation counselling, but knowledge of World Health Organization recommendations was not highly endorsed.
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Affiliation(s)
| | - Michelle Butler
- Faculty of Science and Health, Dublin City University, Glasnevin, Dublin 9, Ireland.
| | - Cheryl Aman
- Midwifery Program, Department of Family Practice, University of British Columbia, Vancouver, BC, Canada.
| | - Tobi Reid
- Midwifery Program, Department of Family Practice, University of British Columbia, Vancouver, BC, Canada.
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11
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Hughes G. Is this primip a nullip? The daily abuse of language in obstetrics. BJOG 2018; 125:1062-1064. [PMID: 29350805 DOI: 10.1111/1471-0528.15138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2017] [Indexed: 11/30/2022]
Affiliation(s)
- G Hughes
- Obstetrics and Gynaecology, Derriford Hospital, Plymouth, UK
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12
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Coffman JC, Herndon BH, Thakkar M, Fiorini K. Anesthesia for Non-delivery Obstetric Procedures. Anesthesiology 2018. [DOI: 10.1007/978-3-319-74766-8_52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Andrews S, Leeman L, Yonke N. Finding the breech: Influence of breech presentation on mode of delivery based on timing of diagnosis, attempt at external cephalic version, and provider success with version. Birth 2017; 44:222-229. [PMID: 28481464 DOI: 10.1111/birt.12290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/25/2017] [Accepted: 02/25/2017] [Indexed: 12/01/2022]
Abstract
BACKGROUND Breech presentation affects 3-4% of pregnancies at term and malpresentation is the primary indication for 10-15% of cesarean deliveries. External cephalic version is an effective intervention that can decrease the need for cesarean delivery; however, timely identification of breech presentation is required. We hypothesized that women with a fetus in a breech presentation that is diagnosed after 38 weeks' estimated gestational age have a decreased likelihood of external cephalic version attempted and an increased likelihood of cesarean delivery. METHODS This was a retrospective cohort study. A chart review was performed for 251 women with breech presentation at term presenting to our tertiary referral university hospital for external cephalic version, cesarean for breech presentation, or vaginal breech delivery. RESULTS Vaginal delivery was significantly more likely (31.1% vs 12.5%; P<.01) in women with breech presentation diagnosed before 38 weeks' estimated gestational age as external cephalic version was offered, and subsequently attempted in a greater proportion of women diagnosed before 38 weeks. External cephalic version was more successful when performed by physicians with greater procedural volume during the 3.5 year period of the study (59.1% for providers performing at least 10 procedures vs 31.3% if performing fewer than 10 procedures, P<.01). CONCLUSIONS Results support the need for interventions to increase timely diagnosis of breech presentation as well as improved patient counseling and use of experienced providers for external cephalic version.
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Affiliation(s)
- Suzanne Andrews
- Maternal Child Health Program in the Department of Family and Community Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Lawrence Leeman
- Maternal Child Health Program in the Department of Family and Community Medicine, University of New Mexico, Albuquerque, NM, USA
| | - Nicole Yonke
- Maternal Child Health Program in the Department of Family and Community Medicine, University of New Mexico, Albuquerque, NM, USA
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14
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Labour Outcomes After Successful External Cephalic Version Compared With Spontaneous Cephalic Version. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2017; 40:61-67. [PMID: 28780214 DOI: 10.1016/j.jogc.2017.05.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 05/12/2017] [Indexed: 11/24/2022]
Abstract
OBJECTIVE This study sought to compare obstetrical outcomes for women with a cephalic presentation at birth resulting from successful external cephalic version (ECV) compared to those resulting from spontaneous cephalic version (SCV). METHODS Secondary analysis was performed on Early External Cephalic Version Trial data. A total of 931 study participants had breech presentations between 34 and 36 weeks' gestation and cephalic presentations at birth. The incidence of intrapartum interventions was compared between patients with successful ECV (557) and those with SCV (374). A generalized linear mixed model was used to determine ORs for our primary outcomes. Parity, maternal BMI, previous CS, and enrolment centre were controlled for in the analysis. RESULTS No differences were found after ECV compared with SCV in the incidence of CS (96 of 557 and 76 of 374, respectively; adjusted OR [aOR] 0.89; 95% CI 0.63-1.26), instrumental birth (68 of 557 and 29 of 373, respectively; aOR 1.55; 95% CI 0.96-2.50), or normal vaginal birth (393 of 557 and 268 of 373, respectively; aOR 0.92; 95% CI 0.68-1.24). Multiparous women with successful ECV were half as likely to require a CS compared with those with SCV and no ECV (28 of 313 and 42 of 258, respectively; aOR 0.45; 95% CI 0.26-0.80). CONCLUSION This is the first study to compare birth outcomes of breech pregnancies that convert to cephalic presentation by means of SCV with birth outcomes of breech pregnancies that have ECV. Women with a cephalic-presenting fetus at birth as a result of successful ECV are not at greater risk of obstetrical interventions at birth when compared with women with fetuses who spontaneously turn to a cephalic presentation in the third trimester.
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Evaluation of the learning curve for external cephalic version using cumulative sum analysis. Obstet Gynecol Sci 2017; 60:343-349. [PMID: 28791265 PMCID: PMC5547081 DOI: 10.5468/ogs.2017.60.4.343] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 05/05/2017] [Accepted: 06/16/2017] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVE We evaluated the learning curve for external cephalic version (ECV) using learning curve-cumulative sum (LC-CUSUM) analysis. METHODS This was a retrospective study involving 290 consecutive cases between October 2013 and March 2017. We evaluated the learning curve for ECV on nulli and over para 1 group using LC-CUSUM analysis on the assumption that 50% and 70% of ECV procedures succeeded by description a trend-line of quadratic function with reliable R2 values. RESULTS The overall success rate for ECV was 64.8% (188/290), while the success rate for nullipara and over para 1 groups was 56.2% (100/178) and 78.6% (88/112), respectively. 'H' value, that the actual failure rate does not differ from the acceptable failure rate, was -3.27 and -1.635 when considering ECV success rates of 50% and 70%, respectively. Consequently, in order to obtain a consistent 50% success rate, we would require 57 nullipara cases, and in order to obtain a consistent 70% success rate, we would require 130 nullipara cases. In contrast, 8 to 10 over para 1 cases would be required for an expected success rate of 50% and 70% on over para 1 group. CONCLUSION Even a relatively inexperienced physician can experience success with multipara and after accumulating experience, they will manage nullipara cases. Further research is required for LC-CUSUM involving several practitioners instead of a single practitioner. This will lead to the gradual implementation of standard learning curve guidelines for ECV.
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Hutton EK, Simioni JC, Thabane L. Predictors of success of external cephalic version and cephalic presentation at birth among 1253 women with non-cephalic presentation using logistic regression and classification tree analyses. Acta Obstet Gynecol Scand 2017; 96:1012-1020. [DOI: 10.1111/aogs.13161] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 04/24/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Eileen K. Hutton
- Department of Obstetrics and Gynecology; McMaster University; Hamilton Ontario Canada
| | - Julia C. Simioni
- Midwifery Education Program; McMaster University; Hamilton Ontario Canada
| | - Lehana Thabane
- Department of Health Research Methods; Evidence, and Impact (HEI); McMaster University; Hamilton Ontario Canada
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Poole KL, McDonald SD, Griffith LE, Hutton EK. Association of external cephalic version before term with late preterm birth. Acta Obstet Gynecol Scand 2017; 96:998-1005. [PMID: 28414857 DOI: 10.1111/aogs.13153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 04/08/2017] [Indexed: 11/29/2022]
Abstract
INTRODUCTION While evidence suggests that beginning an external cephalic version (ECV) before term (340/7 to 366/7 weeks) compared with after term may be associated with an increase in late preterm birth (340/7 to 366/7 weeks), it remains unknown what might account for this risk. The objective of the present study is to further investigate the association between ECV before term and late preterm birth. MATERIAL AND METHODS Secondary analysis of data collected from the international, multicenter Early ECV trials. We evaluated the relation between ECV exposure and late preterm birth (340/7 to 366/7 weeks), as well as whether additional risk factors for preterm birth (such as maternal age, height, body mass index, parity, placental location, and perinatal mortality rate) moderated this relation. Generalized linear mixed methods were used to account for center effect and adjust for covariates. RESULT Among 1765 women with breech pregnancies and without a prior preterm birth, 749 (42.4%) received at least one ECV before term. Exposure to an ECV before term was not associated significantly independently with odds of preterm birth. However, placenta location moderated the association between early ECV exposure and late preterm birth. The odds of preterm birth in women who were exposed to an ECV before term and who also had an anterior placenta were doubled (OR 2.05; 95% CI 1.12-3.71; p = 0.02). CONCLUSION In a large cohort of women without known risks for preterm birth, those with an anterior placenta who undergo an ECV before term constitute a subgroup at particular risk for late preterm birth.
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Affiliation(s)
- Kristie L Poole
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada
| | - Sarah D McDonald
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada.,Department of Obstetrics and Gynecology, McMaster University, Hamilton, ON, Canada
| | - Lauren E Griffith
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada
| | - Eileen K Hutton
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada.,Department of Obstetrics and Gynecology, McMaster University, Hamilton, ON, Canada
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Abstract
Breech presentation is the most common abnormal fetal presentation and complicates approximately 3% to 4% of all pregnancies. External cephalic version (ECV) should be recommended to women with a breech singleton pregnancy, if there is no maternal or fetal contraindication. ECV increases the chance of cephalic presentation at the onset of labor and decreases the rate of cesarean delivery by almost 40%. The success rate of ECV is approximately 60%. Review of the risks and benefits for performing an ECV and for both the timing of ECV and the number of attempts should be should be discussed with the patient.
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Affiliation(s)
- Stephanie Lim
- Division of Obstetric Anesthesia, Department of Anesthesia & Perioperative Care, University California San Francisco School of Medicine, San Francisco, CA 94143, USA
| | - Jennifer Lucero
- Division of Obstetric Anesthesia, Department of Anesthesia & Perioperative Care, University California San Francisco School of Medicine, San Francisco, CA 94143, USA; Department of Obstetrics, Gynecology & Reproductive Sciences, University California San Francisco School of Medicine, San Francisco, CA 94143, USA.
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Blondon M, Casini A, Hoppe KK, Boehlen F, Righini M, Smith NL. Risks of Venous Thromboembolism After Cesarean Sections: A Meta-Analysis. Chest 2016; 150:572-96. [DOI: 10.1016/j.chest.2016.05.021] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/17/2016] [Accepted: 05/23/2016] [Indexed: 12/22/2022] Open
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Watts NP, Petrovska K, Bisits A, Catling C, Homer CSE. This baby is not for turning: Women's experiences of attempted external cephalic version. BMC Pregnancy Childbirth 2016; 16:248. [PMID: 27561416 PMCID: PMC5000477 DOI: 10.1186/s12884-016-1038-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 08/11/2016] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Existing studies regarding women's experiences surrounding an External Cephalic Version (ECV) report on women who have a persistent breech post ECV and give birth by caesarean section, or on women who had successful ECVs and plan for a vaginal birth. There is a paucity of understanding about the experience of women who attempt an ECV then plan a vaginal breech birth when their baby remains breech. The aim of this study was to examine women's experience of an ECV which resulted in a persistent breech presentation. METHODS A qualitative descriptive exploratory design was undertaken. In-depth semi-structured interviews were conducted and analysed thematically. RESULTS Twenty two (n = 22) women who attempted an ECV and subsequently planned a vaginal breech birth participated. Twelve women had a vaginal breech birth (55 %) and 10 (45 %) gave birth by caesarean section. In relation to the ECV, there were five main themes identified: 'seeking an alternative', 'needing information', 'recounting the ECV experience', 'reacting to the unsuccessful ECV' and, 'reflecting on the value of an ECV'. CONCLUSIONS ECV should form part of a range of options provided to women, rather than a default procedure for management of the term breech. For motivated women who fit the safe criteria for vaginal breech birth, not being subjected to a painful experience (ECV) may be optimal. Women should be supported to access services that support vaginal breech birth if this is their choice, and continuity of care should be standard practice.
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Affiliation(s)
- N P Watts
- Centre for Midwifery, Child and Family Health, Faculty of Health, University of Technology Sydney, Sydney, Australia
| | - K Petrovska
- Centre for Midwifery, Child and Family Health, Faculty of Health, University of Technology Sydney, Sydney, Australia
| | - A Bisits
- Royal Hospital for Women, Sydney, Australia
| | - C Catling
- Centre for Midwifery, Child and Family Health, Faculty of Health, University of Technology Sydney, Sydney, Australia
| | - C S E Homer
- Centre for Midwifery, Child and Family Health, Faculty of Health, University of Technology Sydney, Sydney, Australia.
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Dochez V, Delbos L, Esbelin J, Volteau C, Winer N, Sentilhes L. Facteurs prédictifs de réussite d’une version par manœuvre externe : étude bicentrique. ACTA ACUST UNITED AC 2016; 45:509-15. [DOI: 10.1016/j.jgyn.2015.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/28/2015] [Accepted: 07/13/2015] [Indexed: 11/25/2022]
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Ahmed RJ, Gafni A, Hutton EK. The Cost Implications in Ontario, Alberta, and British Columbia of Early Versus Delayed External Cephalic Version in the Early External Cephalic Version 2 (EECV2) Trial. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2016; 38:235-245.e3. [PMID: 27106193 DOI: 10.1016/j.jogc.2015.12.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 05/25/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE According to the Early External Cephalic Version (EECV2) Trial, planning external cephalic version (ECV) early in pregnancy results in fewer breech presentations at delivery compared with delayed external cephalic version. A Cochrane review conducted after the EECV2 Trial identified an increase in preterm birth associated with early ECV. We examined whether a policy of routine early ECV (i.e., before 37 weeks' gestation) is more or less costly than a policy of delayed ECV. METHODS We undertook this analysis from the perspective of a third-party payer (Ministry of Health). We applied data, using resources reported in the EECV2 Trial, to the Canadian context using 10 hospital unit costs and 17 physician service/procedure unit costs. The data were derived from the provincial health insurance plan schedule of medical benefits in three Canadian provinces (Ontario, Alberta, and British Columbia). The difference in mean total costs between study groups was tested for each province separately. RESULTS We found that planning early ECV results in higher costs than planning delayed ECV. The mean costs of all physician services/procedures and hospital units for planned ECV compared with delayed ECV were $7997.32 versus $7263.04 in Ontario (P < 0.001), $8162.82 versus $7410.55 in Alberta (P < 0.001), and $8178.92 versus $7417.04 in British Columbia (P < 0.001), respectively. CONCLUSION From the perspective of overall cost, our analyses do not support a policy of routinely planning ECV before 37 weeks' gestation.
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Affiliation(s)
- Rashid J Ahmed
- Department of Obstetrics and Gynecology, Faculty of Health Sciences, McMaster University, Hamilton ON
| | - Amiram Gafni
- Centre for Health Economics and Policy Analysis, Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton ON
| | - Eileen K Hutton
- Department of Obstetrics and Gynecology (Midwifery), Faculty of Health Sciences, McMaster University, Hamilton ON
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Abstract
BACKGROUND External cephalic version (ECV) of the breech fetus at term (after 37 weeks) has been shown to be effective in reducing the number of breech presentations and caesarean sections, but the rates of success are relatively low. This review examines studies initiating ECV prior to term (before 37 weeks' gestation). OBJECTIVES To assess the effectiveness of a policy of beginning ECV before term (before 37 weeks' gestation) for breech presentation on fetal presentation at birth, method of delivery, and the rate of preterm birth, perinatal morbidity, stillbirth or neonatal mortality. SEARCH METHODS We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (31 March 2015) and reference lists of retrieved studies. SELECTION CRITERIA Randomised controlled trials (RCTs) of ECV attempted before term (37 weeks' gestation) or commenced before term, compared with a control group of women (in breech presentation) in which either no ECV attempted or ECV was attempted at term. Cluster-randomised trials were eligible for inclusion but none were identified. Quasi-RCTs or studies using a cross-over design were not eligible for inclusion. DATA COLLECTION AND ANALYSIS Two review authors independently assessed trials for inclusion and risk of bias, extracted data and checked for accuracy. Studies were assessed for risk of bias and for important outcomes the overall quality of the evidence was assessed using the GRADE approach. MAIN RESULTS Five studies are included (2187 women). It was not possible for the intervention to be blinded, and it is not clear what impact lack of blinding would have on the outcomes reported. For other 'Risk of bias' domains studies were either at low or unclear risk of bias.One study reported on ECV that was undertaken and completed before 37 weeks' gestation compared with no ECV. No difference was found in the rate of non-cephalic presentation at birth (risk ratio (RR) 1.04, 95% confidence interval (CI) 0.64 to 1.69; participants = 102). One study reported on a policy of ECV that was initiated before term (33 weeks) and up until 40 weeks' gestation and which could be repeated up until delivery compared with no ECV. This study showed a decrease in the rate of non-cephalic presentation at birth (RR 0.59, 95% CI 0.45 to 0.77; participants = 179).Three studies reported on ECV started at between 34 to 35 weeks' gestation compared with beginning at 37 to 38 weeks' gestation. Pooled results suggested that early ECV reduced the risk of non-cephalic presentation at birth (RR 0.81, 95% CI 0.74 to 0.90; participants = 1906; studies = three; I² = 0%, evidence graded high quality), failure to achieve vaginal cephalic birth (RR 0.90, 95% CI 0.83 to 0.97; participants = 1888; studies = three; I² = 0%, evidence graded high quality), and vaginal breech delivery (RR 0.44, 95% CI 0.25 to 0.78; participants = 1888; studies = three; I² = 0%, evidence graded high quality). The difference between groups for risk of caesarean was not statistically significant (RR 0.92, 95% CI 0.85 to 1.00; participants = 1888; studies = three; I² = 0%, evidence graded high quality). There was evidence that risk of preterm labour was increased with early ECV compared with ECV after 37 weeks (6.6% in the ECV group and 4.3% for controls) (RR 1.51, 95% CI 1.03 to 2.21; participants = 1888; studies = three; I² = 0%, evidence graded high quality). There was no clear difference between groups for low infant Apgar score at five minutes or perinatal death (stillbirth plus neonatal mortality up to seven days) (evidence graded as low quality for both outcomes). AUTHORS' CONCLUSIONS Compared with no ECV attempt, ECV commenced before term reduces non-cephalic presentation at birth. Compared with ECV at term, beginning ECV at between 34 to 35 weeks may have some benefit in terms of decreasing the rate of non-cephalic presentation, and risk of vaginal breech birth. However, early ECV may increase risk of late preterm birth, and it is important that any future research reports infant morbidity outcomes. Results of the review suggest that there is a need for careful discussion with women about the timing of the ECV procedure so that they can make informed decisions.
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Affiliation(s)
- Eileen K Hutton
- McMaster UniversityDepartment of Obstetrics and Gynecology1200 Main Street WestMDCL 2215HamiltonONCanadaL8N 3Z5
| | - G Justus Hofmeyr
- Frere Hospital, Walter Sisulu University, University of the Witwatersrand, Eastern Cape Department of HealthDepartment of Obstetrics and GynaecologyEast LondonSouth Africa
| | - Therese Dowswell
- The University of LiverpoolCochrane Pregnancy and Childbirth Group, Department of Women's and Children's HealthFirst Floor, Liverpool Women's NHS Foundation TrustCrown StreetLiverpoolUKL8 7SS
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Schitter AM, Nedeljkovic M, Baur H, Fleckenstein J, Raio L. Effects of Passive Hydrotherapy WATSU (WaterShiatsu) in the Third Trimester of Pregnancy: Results of a Controlled Pilot Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2015; 2015:437650. [PMID: 25815033 PMCID: PMC4359846 DOI: 10.1155/2015/437650] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 08/26/2014] [Accepted: 09/15/2014] [Indexed: 12/03/2022]
Abstract
Background. WATSU (WaterShiatsu) is a complementary therapeutic treatment method comprising passive stretches and massage techniques administered in 35°C warm water. Pregnant women claim safe methods to reduce pain, stress, and fatigue. Therefore, we conducted a pilot study evaluating the effects of WATSU on pregnancy-related complaints in third trimester pregnant women. Methods. Nine healthy pregnant women at gestational week ≥34 were included in an intervention group (receiving WATSU) and compared to eight women in a passive control group (receiving no treatment). WATSU was performed on days 1 and 4 of the study, accompanied by ultrasound examinations. Outcomes include physiological and psychometric as well as qualitative data. Participants in the control group completed questionnaires only. Results. WATSU was found to significantly lower participants' levels of stress and pain and to improve their mental health-related quality of life and mood. In comparison to the passive control group, participants in the intervention group reported reduction in perceived stress from day 1 to day 8 (P = 0.036, Cohen's f = 0.57). Qualitative data indicate that WATSU was appreciated as enjoyable and deeply relaxing. No negative side effects were reported. Conclusion. Our findings support the notion that WATSU yields therapeutic benefits for pregnant women and warrant further research. This study has been registered at ClinicalTrials.gov: NCT01708018.
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Affiliation(s)
- Agnes M. Schitter
- Department of TCM/Acupuncture, Institute of Complementary Medicine IKOM, University of Bern, Imhoof-Pavillon, Inselspital, 3010 Bern, Switzerland
| | - Marko Nedeljkovic
- Department of TCM/Acupuncture, Institute of Complementary Medicine IKOM, University of Bern, Imhoof-Pavillon, Inselspital, 3010 Bern, Switzerland
| | - Heiner Baur
- Department of Health, Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern, Switzerland
| | - Johannes Fleckenstein
- Department of TCM/Acupuncture, Institute of Complementary Medicine IKOM, University of Bern, Imhoof-Pavillon, Inselspital, 3010 Bern, Switzerland
| | - Luigi Raio
- Department of Obstetrics and Gynecology Inselspital, University Hospital of Bern, Effingerstrasse 102, 3010 Bern, Switzerland
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Sharoni L, Weiniger CF. Anesthesia and External Cephalic Version. CURRENT ANESTHESIOLOGY REPORTS 2015. [DOI: 10.1007/s40140-014-0095-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Reitsma A, Chu R, Thorpe J, McDonald S, Thabane L, Hutton E. Accounting for center in the Early External Cephalic Version trials: an empirical comparison of statistical methods to adjust for center in a multicenter trial with binary outcomes. Trials 2014; 15:377. [PMID: 25257928 PMCID: PMC4192344 DOI: 10.1186/1745-6215-15-377] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 09/09/2014] [Indexed: 11/22/2022] Open
Abstract
Background Clustering of outcomes at centers involved in multicenter trials is a type of center effect. The Consolidated Standards of Reporting Trials Statement recommends that multicenter randomized controlled trials (RCTs) should account for center effects in their analysis, however most do not. The Early External Cephalic Version (EECV) trials published in 2003 and 2011 stratified by center at randomization, but did not account for center in the analyses, and due to the nature of the intervention and number of centers, may have been prone to center effects. Using data from the EECV trials, we undertook an empirical study to compare various statistical approaches to account for center effect while estimating the impact of external cephalic version timing (early or delayed) on the outcomes of cesarean section, preterm birth, and non-cephalic presentation at the time of birth. Methods The data from the EECV pilot trial and the EECV2 trial were merged into one dataset. Fisher’s exact method was used to test the overall effect of external cephalic version timing unadjusted for center effects. Seven statistical models that accounted for center effects were applied to the data. The models included: i) the Mantel-Haenszel test, ii) logistic regression with fixed center effect and fixed treatment effect, iii) center-size weighted and iv) un-weighted logistic regression with fixed center effect and fixed treatment-by-center interaction, iv) logistic regression with random center effect and fixed treatment effect, v) logistic regression with random center effect and random treatment-by-center interaction, and vi) generalized estimating equations. Results For each of the three outcomes of interest approaches to account for center effect did not alter the overall findings of the trial. The results were similar for the majority of the methods used to adjust for center, illustrating the robustness of the findings. Conclusions Despite literature that suggests center effect can change the estimate of effect in multicenter trials, this empirical study does not show a difference in the outcomes of the EECV trials when accounting for center effect. Trial registration The EECV2 trial was registered on 30 July 30 2005 with Current Controlled Trials: ISRCTN%2056498577.
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Affiliation(s)
- Angela Reitsma
- Midwifery Education Program, McMaster University, 1280 Main St, W,, MDCL 2210, Hamilton, ON L8S 4 K1, Canada.
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Fear for external cephalic version and depression: predictors of successful external cephalic version for breech presentation at term? BMC Pregnancy Childbirth 2014; 14:101. [PMID: 24620740 PMCID: PMC4007643 DOI: 10.1186/1471-2393-14-101] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 12/24/2013] [Indexed: 11/29/2022] Open
Abstract
Background Objective was to determine whether fear for external cephalic version (ECV) and depression are associated with the success rate of ECV in women with a breech presentation at term. Methods Prospective study conducted in the Catharina Hospital Eindhoven between October 2007 and May 2012. Participants fulfilled The Edinburgh Depression Scale (EDS) questionnaire and expressed their degree of fear on a visual analogue scale from one to ten before ECV. Obstetric factors were evaluated as well. Primary outcome was the relation between psychological factors (fear for ECV and depression EDS scores) and ECV success rate. Secondary outcome was a possible relation between fear for ECV and increased abdominal muscle tension. Results The overall success rate was 55% and was significantly lower (p < 0.001) in nulliparous women (44.3%) compared with parous women (78.0%). Fear for ECV and depression EDS-scores were not related with ECV success rate. Parity, placental location, BMI and engagement of the fetal breech were obstetric factors associated with ECV outcome. There was no relation between fear for ECV and abdominal muscle tone. Conclusion Fear for ECV and depression were not related with ECV success rate in this study. Engagement of the fetal breech was the most important factor associated with a successful ECV. Trial registration EBIS: The Eindhoven Breech Intervention Study,
NCT00516555.
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Gordon A, Glickman-Simon R. Moxibustion and breech presentation, breathing exercises and asthma, coenzyme Q10 and heart failure, acupuncture and chronic low back pain, and cinnamon and diabetes. Explore (NY) 2014; 10:198-202. [PMID: 24767268 DOI: 10.1016/j.explore.2014.02.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Zandstra H, Mertens H. Improving external cephalic version for foetal breech presentation. Facts Views Vis Obgyn 2013; 5:85-90. [PMID: 24753933 PMCID: PMC3987362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES If success rate of external cephalic version (ECV) increases, the rate of primary caesarean sections -declines. The aims of this retrospective cohort study were to evaluate the ECV and to identify factors associated with the success rate of ECV for breech presentation at term. The second aim of this study was to analyse the outcome of labour of all patients with a foetus in breech near term. METHODS All women with a foetus in breech near or at term were included. Logistic regression analyses were -performed to identify the association between patient characteristics and success rate of ECV. RESULTS The overall rate of successful ECV's was 19%. Foetal and maternal complications after ECV were negligible. BMI, type of breech and amount of amniotic fluid were significantly correlated with a successful ECV. The rate of primary caesarean sections for the group of patients who underwent an ECV was lower than the rate in the group who did not (52.9% vs. 79.6%). The rate of spontaneous deliveries was increased after ECV (36% versus 12%). After successful ECV the rate of spontaneous deliveries was 75%; after unsuccessful ECV 26.8%. CONCLUSION The overall rate of successful ECV was low (19%). BMI, type of breech and amount of amniotic fluid were significantly correlated with a successful ECV. The rate of primary caesarean sections was significantly lower in patients with ECV (52.9% versus 79.6%). The rate of spontaneous deliveries was significantly higher (36% -versus 12%).
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Affiliation(s)
| | - H.J.M.M. Mertens
- Gynaecologist, Department of Obstetrics and Gynaecology, Orbis Medical Center, Dr. H. Van der Hoffplein 1, 6162 BG Sittard-Geleen.
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Vas J, Aranda-Regules JM, Modesto M, Ramos-Monserrat M, Barón M, Aguilar I, Benítez-Parejo N, Ramírez-Carmona C, Rivas-Ruiz F. Using moxibustion in primary healthcare to correct non-vertex presentation: a multicentre randomised controlled trial. Acupunct Med 2012; 31:31-8. [PMID: 23249535 DOI: 10.1136/acupmed-2012-010261] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To compare the effectiveness of additional moxibustion at point BL67 with moxibustion at a non-specific acupuncture point and with usual care alone to correct non-vertex presentation. METHODS This was a multicentre randomised controlled trial in which 406 low-risk pregnant women with a fetus in ultrasound breech presentation, with a gestational age of 33-35 weeks, were assigned to (1) true moxibustion at point BL67 plus usual care; (2) moxibustion at SP1, a non-specific acupuncture point (sham moxibustion) plus usual care; or (3) usual care alone. The primary outcome was cephalic presentation at birth. Women were recruited at health centres in primary healthcare. RESULTS In the true moxibustion group, 58.1% of the full-term presentations were cephalic compared with 43.4% in the sham moxibustion group (RR 1.34, 95% CI 1.05 to 1.70) and 44.8% of those in the usual care group (RR 1.29, 95% CI 1.02 to 1.64). The reduction in RR of the primary outcome in women allocated to the true moxibustion group compared with the usual care group was 29.7% (95% CI 3.1% to 55.2%) and the number needed to treat was 8 (95% CI 4 to 72). There were no severe adverse effects during the treatment. CONCLUSIONS Moxibustion at acupuncture point BL67 is effective and safe to correct non-vertex presentation when used between 33 and 35 weeks of gestation. We believe that moxibustion represents a treatment option that should be considered to achieve version of the non-vertex fetus. TRIAL REGISTRATION Current Controlled Trials ISRCTN10634508.
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Affiliation(s)
- Jorge Vas
- Pain Treatment Unit, Doña Mercedes Primary Health Care Centre, Andalusian Public Health System, Dos Hermanas, Sevilla 41700, Spain.
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Delivery mode and neonatal outcome after a trial of external cephalic version (ECV): a prospective trial of vaginal breech versus cephalic delivery. Arch Gynecol Obstet 2012. [DOI: 10.1007/s00404-012-2639-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Reinhard J, Heinrich TM, Reitter A, Herrmann E, Smart W, Louwen F. Clinical hypnosis before external cephalic version. AMERICAN JOURNAL OF CLINICAL HYPNOSIS 2012. [PMID: 23189523 DOI: 10.1080/00029157.2012.665399] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Three to four percent of full-term singleton pregnancies present themselves as breech deliveries. External cephalic version (ECV) is a procedure to try to turn a breech fetus to cephalic by externally maneuvering the fetus through the maternal abdomen. This trial examines a clinical hypnosis intervention against standard medical care of women before ECV. A total of 78 women, who received a hypnosis intervention prior to ECV, had a 41.6% (n = 32) successful ECV, whereas the control group of 122, who had similar baseline characteristics, had a 27.3% (n = 33) successful ECV procedure (p < 0.05). This trial found that a relaxation technique with the help of clinical hypnosis was successful at increasing the likelihood of a successful ECV procedure.
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The Effects of Clinical Hypnosis versus Neurolinguistic Programming (NLP) before External Cephalic Version (ECV): A Prospective Off-Centre Randomised, Double-Blind, Controlled Trial. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:626740. [PMID: 22778774 PMCID: PMC3388481 DOI: 10.1155/2012/626740] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Revised: 03/30/2012] [Accepted: 05/03/2012] [Indexed: 12/04/2022]
Abstract
Objective. To examine the effects of clinical hypnosis versus NLP intervention on the success rate of ECV procedures in comparison to a control group.
Methods. A prospective off-centre randomised trial of a clinical hypnosis intervention against NLP of women with a singleton breech fetus at or after 370/7 (259 days) weeks of gestation and normal amniotic fluid index. All 80 participants heard a 20-minute recorded intervention via head phones. Main outcome assessed was success rate of ECV. The intervention groups were compared with a control group with standard medical care alone (n = 122).
Results. A total of 42 women, who received a hypnosis intervention prior to ECV, had a 40.5% (n = 17), successful ECV, whereas 38 women, who received NLP, had a 44.7% (n = 17) successful ECV (P > 0.05). The control group had similar patient characteristics compared to the intervention groups (P > 0.05). In the control group (n = 122) 27.3% (n = 33) had a statistically significant lower successful ECV procedure than NLP (P = 0.05) and hypnosis and NLP (P = 0.03).
Conclusions. These findings suggest that prior clinical hypnosis and NLP have similar success rates of ECV procedures and are both superior to standard medical care alone.
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Mukaindo AM, Wanyonyi SZ, Stones WR. External cephalic version in East, Central, and Southern Africa. Int J Gynaecol Obstet 2011; 116:228-31. [DOI: 10.1016/j.ijgo.2011.10.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 10/13/2011] [Accepted: 11/23/2011] [Indexed: 11/30/2022]
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Abstract
OBJECTIVE To estimate trends and risk factors for cesarean delivery for twins in the United States. METHODS This was a cross-sectional study in which we calculated cesarean delivery rates for twins from 1995 to 2008 using National Center for Health Statistics data. We compared cesarean delivery rates by year and for vertex compared with breech presentation. The order of presentation for a given twin pair could not be determined from the available records and therefore analysis was based on individual discrete twin data. Multivariable logistic regression was used to estimate independent risk factors, including year of birth and maternal factors, for cesarean delivery. RESULTS Cesarean delivery rates for twin births increased steadily from 53.4% to 75.0% in 2008. Rates rose for the breech twin category (81.5%-92.1%) and the vertex twin category (45.1%-68.2%). The relative increase in the cesarean delivery rate for preterm and term neonates was similar. After risk adjustment, there was an average increase noted in cesarean delivery of 5% each year during the study period (risk ratio 1.05, 95% confidence interval 1.04-1.05). CONCLUSION Cesarean delivery rates for twin births increased dramatically from 1995 to 2008. This increase is significantly higher than that which could be explained by an increase in cesarean delivery for breech presentation of either the presenting or second twin.
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Bogner G, Xu F, Simbrunner C, Bacherer A, Reisenberger K. Single-institute experience, management, success rate, and outcome after external cephalic version at term. Int J Gynaecol Obstet 2011; 116:134-7. [PMID: 22169098 DOI: 10.1016/j.ijgo.2011.09.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Revised: 09/25/2011] [Accepted: 11/03/2011] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To determine obstetric outcomes after external cephalic version (ECV) performed at term. METHODS In a retrospective study of ECV among pregnant women at term at Klinikum Kreuzschwestern Wels between January 1999 and June 2010, univariate and multivariate logistic regression was used to analyze factors influencing success rate. RESULTS Among 379 ECV attempts, 49.1% (95% confidence interval, 44.1-54.1) were successful. Success rate was dependent on parity, gestational age, and performing physician. Increasing parity was associated with increasing success rate (P=0.05). Gestational age had no influence until week 39, after which the success rate increased (success after completion of week 35, 48.1%; week 37, 43.7%; week 38, 43.5%; week 39, 64.9%; week 40 or more, 90.9%; P=0.19). The performing physician had a significant influence (P<0.0005). Regarding obstetric outcome, spontaneous re-version occurred in 8.1% of women, 81.1% of women delivered vaginally, 7.9% had unplanned cesarean delivery, and 4.9% had vacuum extraction. No harm to fetal or maternal health resulted from ECV. CONCLUSION ECV was found to be a safe procedure at term. The skill of the physician significantly affected the success rate. The rate of surgical delivery after successful ECV was low. A trial of ECV at term and beyond is feasible.
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Affiliation(s)
- Gerhard Bogner
- Department of Obstetrics and Gynecology I, Klinikum Kreuzschwestern Wels, Wels, Austria.
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Moxibustion for cephalic version: a feasibility randomised controlled trial. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 11:81. [PMID: 21943180 PMCID: PMC3192686 DOI: 10.1186/1472-6882-11-81] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 09/26/2011] [Indexed: 11/10/2022]
Abstract
Background Moxibustion (a type of Chinese medicine which involves burning a herb close to the skin) has been used to correct a breech presentation. Evidence of effectiveness and safety from systematic reviews is encouraging although significant heterogeneity has been found among trials. We assessed the feasibility of conducting a randomised controlled trial of moxibustion plus usual care compared with usual care to promote cephalic version in women with a breech presentation, and examined the views of women and health care providers towards implementing a trial within an Australian context. Methods The study was undertaken at a public hospital in Newcastle, New South Wales, Australia. Women at 34-36.5 weeks of gestation with a singleton breech presentation (confirmed by ultrasound), were randomised to moxibustion plus usual care or usual care alone. The intervention was administered over 10 days. Clinical outcomes included cephalic presentation at birth, the need for ECV, mode of birth; perinatal morbidity and mortality, and maternal complications. Feasibility outcomes included: recruitment rate, acceptability, compliance and a sample size for a future study. Interviews were conducted with 19 midwives and obstetricians to examine the acceptability of moxibustion, and views on the trial. Results Twenty women were randomised to the trial. Fifty one percent of women approached accepted randomisation to the trial. A trend towards an increase in cephalic version at delivery (RR 5.0; 95% CI 0.7-35.5) was found for women receiving moxibustion compared with usual care. There was also a trend towards greater success with version following ECV. Two babies were admitted to the neonatal unit from the moxibustion group. Compliance with the moxibustion protocol was acceptable with no reported side effects. Clinicians expressed the need for research to establish the safety and efficacy of moxibustion, and support for the intervention was given to increase women's choices, and explore opportunities to normalise birth. The sample size for a future trial is estimated to be 381 women. Conclusion Our findings should be interpreted with caution as the study was underpowered to detect statistical differences between groups. Acceptance by women and health professionals towards moxibustion suggest further research is warranted. Trial Registration Australia and New Zealand Clinical Trials Register (ANZCTR): ACTRN12609000985280
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Hutton EK. Early versus late external cephalic version. BJOG 2011. [DOI: 10.1111/j.1471-0528.2011.03060.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Love I, Saravanabhava N, Marasinghe JP. Early versus late external cephalic version. BJOG 2011; 118:1272; author reply 1272-3. [PMID: 21834883 DOI: 10.1111/j.1471-0528.2011.03058.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kent A. Early external cephalic version. REVIEWS IN OBSTETRICS & GYNECOLOGY 2011; 4:94. [PMID: 22102935 PMCID: PMC3218549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Athol Kent
- Department of Obstetrics & Gynaecology, University of Cape Town Rondebosch, South Africa
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Abstract
BACKGROUND External cephalic version (ECV) of the breech fetus at term (after 37 weeks) has been shown to be effective in reducing the number of breech presentations and caesarean sections, but the rates of success are relatively low. This review examines studies initiating ECV prior to term (before 37 weeks' gestation). OBJECTIVES To assess the effectiveness of a policy of beginning ECV before term (before 37 weeks' gestation) for breech presentation on fetal presentation at birth, method of delivery, and the rate of preterm birth, perinatal morbidity, stillbirth or neonatal mortality. SEARCH STRATEGY We searched the Cochrane Pregnancy and Childbirth Group Trials Register (April 2005), the Cochrane Central Register of Controlled Trials (The Cochrane Library, Issue 1, 2005), MEDLINE (1965 to April 2005), EMBASE (1988 to April 2005), and Controlled Clinical Trials randomised controlled trials registry (April 2005). SELECTION CRITERIA Randomised trials of ECV beginning before term (before 37 weeks' gestation) compared with a control group in women with breech presentation before term. DATA COLLECTION AND ANALYSIS Two review authors independently assessed eligibility and trial quality and extracted data. MAIN RESULTS Three studies are included. One study reported on ECV that was undertaken and completed before 37 weeks' gestation compared to no ECV. No difference was found in the rate of non-cephalic presentation at birth. One study reported on a policy of ECV that was initiated before term (33 weeks) and up until 40 weeks' gestation and which could be repeated up until delivery compared to no ECV. This study showed a decrease in the rate of non-cephalic presentation at birth (relative risk 0.59, 95% confidence interval 0.45 to 0.77). One study reported on ECV started at between 34 to 35 weeks' gestation compared to beginning at 37 to 38 weeks' gestation. Although findings were not statistically significant, a 9.5% decrease in the rate of non-cephalic presentation at birth and a 7% decrease in the caesarean section rate were reported when ECV was started early. AUTHORS' CONCLUSIONS Compared with no ECV attempt, ECV commenced before term reduces non-cephalic births. Compared with ECV at term, beginning ECV at between 34 to 35 weeks may have some benefit in terms of decreasing the rate of non-cephalic presentation, and caesarean section. Further trials are needed to confirm this finding and to rule out increased rates of preterm birth, or other adverse perinatal outcomes. A large pragmatic trial is ongoing (www.utoronto.ca/miru/eecv2).
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Affiliation(s)
- E K Hutton
- University of British Columbia, Department of Family Practice, Division of Midwifery, B-54 - 2194 Health Sciences Mall, Vancouver, British Columbia, Canada V6T 1Z3.
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