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Objective:To analyze the factors influencing the success rate of external cephalic version (ECV) and to create a preoperative scoring scale for stratified management of pregnant women who were preparing for ECV.Methods:This prospective study was conducted on singleton pregnant women who underwent ECV without anesthesia in Fujian Maternity and Child Health Hospital from January 1, 2017, to December 31, 2019. Univariate (two independent samples t-test, Mann-Whitney U test, and Chi-square test) and multivariate logistic regression were used to screen the clinical characteristics affecting the success of ECV, and receiver operating characteristic (ROC) curve was used to determine the cut-off value and convert quantitative variables into dichotomous variables. The independent variables were scored according to the regression coefficient in multivariate logistic regression analysis, and then a preoperative scoring scale was created. The ROC curve was used to calculate the cut-off value for the scoring scale. The subjects were divided into low and high score groups according to the cut-off value. The area under the ROC curve was used for evaluating the effectiveness of the scale in predicting the success of ECV. The success rate of ECV, difficulty of the operation and mode of delivery were compared between the two groups. Results:A total of 1 338 pregnant women met the inclusion criteria during the study period. After the exclusion of 885 women, 165 refused ECV in favor of direct cesarean section, 27 spontaneously converted to cephalic position before ECV, 261 who voluntarily accepted ECV were finally enrolled. ECV succeeded in 202 cases and failed in 59. (1) Favorable factors for ECV without anesthesia were the distance between the fetal breech and ischial spine <－3.5 cm ( OR=0.177, 95% CI: 0.071-0.438, P=0.009), the sum of the fundal height and the station of the fetal breech based on the ischial spine <30.25 cm ( OR=0.225, 95% CI: 0.094-0.537, P=0.001), amniotic fluid index ≥12 cm ( OR=0.399, 95% CI: 0.164-0.969, P=0.042), the surgeon's ability to hold the fetal head or breech with one hand ( OR=0.241, 95% CI: 0.098-0.589, P=0.002; OR=0.219, 95% CI: 0.087-0.546, P=0.001), and the fetal head located on the right or left upper abdomen of the mother ( OR=0.184, 95% CI: 0.059-0.568, P=0.003; OR=0.253, 95% CI: 0.084-0.760, P=0.014). (2) The area under the ROC curve of the preoperative score for predicting the success of ECV was 0.881 (95% CI: 0.821-0.941) and the cut-off value was 5.5. The subjects were divided into low (0-5 scores) and high (6-11 scores) score groups and the area under the ROC curve for predicting the success of ECV by grouping was 0.843 (95% CI: 0.774-0.912). Compared with the low score group, the high score group had a shorter ECV duration [2.0 min (0.5-10.0 min) vs 10.0 min (0.9-25.8 min), Z=－6.83, P<0.001], less attempts [1.0 times (1.0-4.0 times) vs 3.0 times (1.0-5.0 times), Z=－8.41, P<0.001], higher success rate [92.7% (190/205) vs 21.4% (12/56), χ2=127.64, P<0.001], higher rate of vaginal birth [75.4% (147/195) vs 18.5% (10/54)] and lower cesarean section rate [24.6% (48/195) vs 81.5% (44/54)] ( χ2=58.70, P<0.001). Conclusions:Preoperative scoring based on the factors influencing the success rate of ECV (the distance between the fetal breech and ischial spine, the sum of the fundal height and the station of the fetal breech based on the ischial spine <30.25 cm, amniotic fluid index ≥12 cm, the surgeon's ability to hold the fetal head or breech with one hand, and the fetal head locating on the right or left upper abdomen of the mother) is conducive to the individualized evaluation of the difficulty and the success rate of ECV as well as the success rate of vaginal delivery after ECV, which can provide a reference for clinical stratified management of ECV patients.
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Objective To investigate the factors associated with the success rate of external cephalic version (ECV) for singleton and non-cephalic presentation pregnancies in the third trimester.Methods A retrospective study of ECV among singleton and non-cephalic presentation pregnant women in 36-40 weeks of gestation at Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region from January 2016 to June 2018 was analyzed.Results (1) Totally,251 cases of 358 pregnant women who underwent ECV were successful,with a total success rate of 70.1％ (251/358).The success rate of multipara was 79.1％ (129/163),while 62.6％ (122/195) in primipara (P＜0.01).The total vaginal delivery rate was 52.2％ (187/358),the vaginal delivery rate of multipara was 61.3％ (100/163),while 44.6％ (87/195) in primipara (P＜0.01).(2) Spontaneous reversion occurred in 7.6％(19/251) of ECV successful women,the rate of reversion of multipara was 10.9％ (14/129),higher than that of the primipara [4.1％ (5/122);P＜0.01].(3) Among the 232 pregnant women who did not reverted after successful ECV,187 cases of successful vaginal delivery,the vaginal delivery rate was 80.6％ (187/232);the vaginal delivery rate of the multipara was 87.0％(100/115),which was higher than that of the primipara [74.4％(87/117);P＜0.01].(4) The variables significantly associated with ECV success were parity,type of breech,whether fetal presentation was in pelvic or not (all P＜0.05).The complication rate was 2.2％ (8/358),among which the incidence of fetal distress,placental abruption and transient fetal heart abnormalities were 0.6％ (2/358),0.3％ (1/358) and 1.4％ (5/358) respectively.Conclusion By close monitoring,ECV is a safe and effective procedure in selected appropriate cases,and worthy of clinical application.
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Objective To investigate the safety and effectiveness of external cephalic version for breech presentation in singleton term pregnancies. Methods This study retrospectively analyzed the clinical data of 195 singleton pregnancies with gestational weeks ≥37 and breech presentation that has received external cephalic version in University of Hong Kong-Shenzhen Hospital from January 2014 to December 2016. The success rate of external cephalic version, delivery modes, maternal and neonatal complications and adverse outcomes were analyzed. Results Of the 195 cases, 62.6% (122/195) were successful, among which 107 vaginally delivered and 15 underwent the cesarean section. Maternal and neonatal outcomes of all 195 cases were good. The success rate of external cephalic version in the multipara was higher than that of the primipara [84.5%(71/84) vs 45.9%(51/111), χ2=30.383, P<0.001]. No neonatal asphyxiation or postpartum hemorrhage was reported. Conclusions External cephalic version is an effective and safe method to convert breech presentation and reduce cesarean section rate in the third trimester.
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O objetivo deste estudo foi conduzir uma revisão integrativa a fim de identificar publicações sobre a moxabustão e acupuntura para versão de fetos em apresentação pélvica. A ferramenta de pesquisa Paciente, Intervenção, Comparação e Desfecho, disponibilizada pela base de dados da Biblioteca Nacional de Medicina dos Estados Unidos, foi utilizada para gerar uma lista de artigos. As palavras utilizadas para a busca foram os termos breech, moxibustion, acupuncture e cephalic. A busca foi realizada no mês de março de 2016. Foram encontrados 24 registros, 18 foram analisados, dentre os quais sete foram favoráveis ao uso da moxabustão, e cinco, desfavoráveis. A partir dos estudos realizados sobre o tema, há evidências de que a moxabustão seja segura e efetiva para tentar "corrigir" apresentações pélvicas, apresentando-se como uma ferramenta no complemento da assistência prestada por profissionais na área da obstetrícia (AU).
The objective in this study was to develop an integrative review to identify publications on moxibustion and acupuncture to turn fetuses in breech position. The research tool Patient, Intervention, Comparison and Outcome, available through the database of the United States National Library of Medicine, was used to produce a list of articles. The words used for the search were: breech, moxibustion, acupuncture and cephalic. The search was undertaken in March 2016. Twenty-four registers were found, 18 of which were analyzed, seven of them favorable to the use of moxibustion and five unfavorable. Based on the studies developed on the theme, there is evidence that moxibustion is safe and effective to try and "correct" breech presentations, as a tool to complement the care midwifery professionals provide (AU).
El objetivo de este estudio fue desarrollar una revisión integradora para identificar publicaciones sobre la moxibustión y acupuntura para versión de fetos en presentación de nalgas. La herramienta de investigación Paciente, Intervención, Comparación y Desfecho, publicada por la base de datos de la Biblioteca Nacional de Medicina de Estados Unidos, fue utilizada para generar un rol de artículos. Las palabras utilizadas para la búsqueda fueron: breech, moxibustion, acupuncture y cephalic. La búsqueda fue llevada a cabo en marzo del 2016. Fueron encontrados 24 registros, 18 fueron analizados, entre los cuales siete fueron favorables al uso de la moxibustión y cinco desfavorables. A partir de los estudios desarrollados sobre el tema, hay evidencias de que la moxibustión sea segura y efectiva para intentar "corregir" presentaciones de nalgas, siendo una herramienta para complementar la atención prestada por profesionales en el área de partería (AU).
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Humans , Version, Fetal , Acupuncture Points , Artemisia , Obstetric NursingABSTRACT
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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Female , Pregnancy , Amniotic Fluid , Breech Presentation , Learning Curve , Learning , Retrospective Studies , Version, FetalABSTRACT
Objective To investigate the natural rotation of the fetal head during labor when it was engaged by occiput transverse (OT) or occiput posterior(OP) positions.Methods A total of 1 013 parturients was included who had a singleton term gestation, vertex presentation, OT or OP position with cervical dilatation of ≤ 3 cm, and vaginal delivery.All parturients were delivered in Xiamen Hospital of Traditional Chinese Medicine during April 1 to December 31,2014.Cervical dilation, station, and fetal position of every delivery were systematically recorded.Main outcome was the cervical dilation and station of anterior rotation from OT or OP position.They were Stratified by cervical dilation every 2 cm since 4 cm into 4 ～ 5 cm, 6 ～7 cm, 8 ～9 cm, 10 cm;or were stratified by fetal head station every 1 cm since-2 (S-2) into S-1 , S0, S+1 , S+2 , S+3.The differences in anterior rotation rate, dilatation, and head station between OT and OP were analyzed.Results There were 850 OT and 407 OP with cervical dilatation of ≤≤ 3 cm.The rate of anterior rotation was 82.5 ％ (701/850) and 76.7 ％ (312/407), respectively.The constituent ratio of OT rotating into occiput anterior position (OA) at different dilatation was different with that of OP (x2 =260.93, P ＜ 0.01).The constituent ratio of OT rotating into OA at different fetal head station was different with that of OP (x2 =133.18, P ＜0.01).The cervical dilatation and fetal head station that make it easy for OT 's anterior rotation were 6 ～7 cm (OR =5.81 , 95％ CI :3.81 ～8.87), 8 ～9 cm(OR =4.99 ,95％ CI:3.19 ～7.83), and S+1(OR =3.01, 95％ CI: 1.99 ～4.54), S+2(OR =5.43, 95％ CI:3.53 ～ 8.35).The cervical dilatation and fetal head station that make it easy for OP 's anterior rotation were 6～7 cm(OR =4.11,95％ CI :2.24 ～7.89), 8 ～9 cm(OR =27.31, 95％ CI :15.12 ～49.34), 10 cm(OR =27.76 , 95％ CI :14.87 ～51.82), S+2(OR =4.84 , 95％ CI :3.03 ～7.73).Conclusions The anterior rotation time of OT is different from OP.It's easy for OT to rotate into OA when cervix dilate into 6 ～9 cm and fetal head station is at S+1 ～ S+2.When cervix dilate into 6 ～ 10 cm and fetal head station is at S+2, it's easy for OP to rotate into OA.
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Objective To discuss the success rate of external cephalic version (ECV) for breech presentation in singleton pregnancies and the factors influencing ECV,and complications induced by ECV.Methods A prospective study was conducted which included 204 pregnant women who underwent regular prenatal examinations and delivered in Nanjing Drum Tower Hospital between March 1,2011 and February 29,2012.The 204 cases were single pregnancy with breech presentation identified by ultrasound during 32-37+6 weeks of gestation,and without other indications for cesarean section (CS).According to willingness of the participants,204 cases were divided into two groups.The 101 pregnant women who refused EVC (control group) were asked to practice knee-chest position twice a day; and 103 pregnant women volunteered to undergo EVC (ECV group) during 32-37+6 weeks of gestation.The proportion of cephalic presentation at delivery,CS rate and the incidence of PROM,premature delivery and cord around the neck were compared between the two groups.Factors influencing the success rate of ECV were analyzed.Chi-square or adjusted Chi-square test were used for statistical analysis.Results The proportion of cephalic presentation at delivery in the ECV group was higher than that in the control group [68.9％ (71/103) vs 29.7％ (30/101),x2=31.39]; the CS rate in the ECV group was lower than that in the control group [49.5％ (51/103) vs 78.2％ (79/101),x2=18.18],as was the rate of CS due to breech presentation [62.7％ (32/51) vs 89.9％ (71/79),x2=13.86],all P＜0.05.The success rates in frank breech presentation,complete breech presentation and incomplete breech presentation were 77.1％ (37/48),72.7％ (24/33) and 45.5％ (10/22),respectively (x2=7.37,P＜0.05),and the success rate in frank breech presentation was higher than that in incomplete breech presentation (x2=6.84,P＜0.017).No significant differences were observed in the success rates between primiparas and multiparas [67.7％ (63/93) vs 8/10,x2=0.19],placenta attached at front wall of uterus and other attachment sites [61.0％ (25/41) vs 74.2％ (46/62),x2=2.01],and EVC performed at 32-35+6weeks of gestation and 36-37+6 weeks [70.5％ (62/88) vs 9/15,x2=0.65],allP＞0.05.No significant differences were observed for the incidence of PROM [7.8％ (8/103) vs 6.9％ (7/101)],premature delivery [2.9％ (3/103) vs 2.0％ (2/101)] and cord around the neck [17.5％ (18/103) vs 21.8％ (22/101)] between the ECV and control group (x2=0.05,0.19 and 0.60,all P＞0.05).Conclusions ECV for breech presentation in singleton pregnancies can effectively correct the fetal position and reduce the CS rate.ECV performed after 32 weeks of gestation does not increase the risk of PROM and premature delivery.
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O manejo do parto gemelar é tema controverso em Ostetrícia. A via de parto ideal na gemelidade ainda não foi estabelecida. Até o presente momento, o parto vaginal deve ser considerado para cerca de 80 por cento das gestações gemelares diamnióticas, o que representa todos os casos em que o primeiro gêmeo está em apresentação cefálica. Dessa forma, o conhecimento das diversas peculiaridades do parto gemelar: duração da gravidez, indução e estimulação do parto, parto vaginal após cesariana, via de parto, intervalo de parto entre os gêmeos e conduta no segundo gemelar não cefálico...
Intrapartum management of twins is a controversal subject in Obstetrics. The optimal route of delivery of twins has not yet been established. Nowadays, vaginal delivery should be considered for almost 80 percent of diamniotic twin pregnancies, in other words, all cases in which the first twin presents in the vertex position. Thus, the knowledge of several issues of twin birth is essential for best practice. This paper reviews many aspects of twin pregnancy concerning birth management: pregnancy length, induction and augmentation of labor, vaginal birth after cesarean, mode of delivery, intertwin delivery interval and nonvertex second twin birth...