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OBJECTIVE: This study aimed to evaluate if manual rotation, undertaken during labor, of fetuses in occiput posterior or occiput transverse position led to an increased rate of spontaneous vaginal delivery. DATA SOURCES: Searches were performed in MEDLINE, Ovid, Scopus, ClinicalTrials.gov, and the Cochrane Central Register of Controlled Trials with the use of a combination of keywords and text words related to "occiput posterior," "occiput transverse," and "manual rotation" from inception of the databases to July 2021. STUDY ELIGIBILITY CRITERIA: We included all randomized controlled trials evaluating manual rotation of fetuses in the occiput posterior or occiput transverse position during labor. METHODS: The primary outcome was the rate of spontaneous vaginal delivery. Meta-analyses were performed using the random effects model of DerSimonian and Laird to determine the relative risks or mean differences with 95% confidence intervals. RESULTS: A total of 643 records were screened with inclusion of 6 articles and 1002 randomized patients. All included studies compared manual rotation of fetuses in occiput posterior or occiput transverse position, all confirmed using ultrasound examinations, after complete cervical dilation with either no rotation or a sham rotation procedure. There was no difference in the rate of spontaneous vaginal delivery with manual rotation (relative risk, 1.07; 95% confidence interval, 0.95-1.20) nor was there any difference in any other maternal or fetal outcomes. In a subgroup analysis of occiput posterior fetuses, there was a 12.80-minute decrease in the length of the second stage of labor in the manual rotation group (mean difference, -12.80; 95% confidence interval, -22.61 to -2.99). There were no significant differences in any other maternal or fetal outcomes in the occiput posterior subgroup and no differences in the occiput transverse subgroup. CONCLUSION: Prophylactic manual rotation of fetuses in occiput posterior or occiput transverse position, confirmed using ultrasound examination, did not increase the rate of spontaneous vaginal delivery compared with no manual rotation. Manual rotation of the occiput posterior fetal head early during the second stage of labor was associated with a significant 12.8-minute decrease in the length of the second stage of labor with no changes in any other maternal or fetal outcomes. There were no differences demonstrated for fetuses rotated from occiput transverse position or for the combination of occiput posterior and occiput transverse fetuses. Because there is some evidence of benefit, prophylactic manual rotation can be offered to patients during the second stage of labor presenting with occiput posterior position of the fetal head documented during ultrasound examination.
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Segundo Periodo del Trabajo de Parto , Ultrasonografía Prenatal , Femenino , Feto/diagnóstico por imagen , Humanos , Presentación en Trabajo de Parto , Embarazo , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
BACKGROUND: The fetal occiput transverse position in the second stage of labor is associated with adverse maternal and perinatal outcomes. Prophylactic manual rotation in the second stage of labor is considered a safe and easy to perform procedure that has been used to prevent operative deliveries. OBJECTIVE: This study aimed to determine the efficacy of prophylactic manual rotation in the management of the occiput transverse position for preventing operative delivery. We hypothesized that among women who are at ≥37 weeks' gestation with a baby in the occiput transverse position early in the second stage of labor, manual rotation compared with a "sham" rotation will reduce the rate of operative delivery. STUDY DESIGN: A double-blinded, parallel, superiority, multicenter, randomized controlled clinical trial in 3 tertiary hospitals was conducted in Australia. The primary outcome was operative (cesarean, forceps, or vacuum) delivery. Secondary outcomes were cesarean delivery, serious maternal morbidity and mortality, and serious perinatal morbidity and mortality. Outcomes were analyzed by intention to treat. Proportions were compared using χ2 tests adjusted for stratification variables using the Mantel-Haenszel method or Fisher exact test. Planned subgroup analyses by operator experience and technique of manual rotation (digital or whole hand rotation) were performed. The planned sample size was 416 participants (trial registration: ACTRN12613000005752). RESULTS: Here, 160 women with a term pregnancy and a baby in the occiput transverse position in the second stage of labor, confirmed by ultrasound, were randomly assigned to receive either a prophylactic manual rotation (n=80) or a sham procedure (n=80), which was less than our original intended sample size. Operative delivery occurred in 41 of 80 women (51%) assigned to prophylactic manual rotation and 40 of 80 women (50%) assigned to a sham rotation (common risk difference, -4.2% [favors sham rotation]; 95% confidence interval, -21 to 13; P=.63). Among more experienced proceduralists, operative delivery occurred in 24 of 47 women (51%) assigned to manual rotation and 29 of 46 women (63%) assigned to a sham rotation (common risk difference, 11%; 95% confidence interval, -11 to 33; P=.33). Cesarean delivery occurred in 6 of 80 women (7.5%) in the manual rotation group and 7 of 80 women (8.7%) in the sham group. Instrumental (forceps or vacuum) delivery occurred in 35 of 80 women (44%) in the manual rotation group and 33 of 80 women (41%) in the sham group. There was no significant difference in the combined maternal and perinatal outcomes. The trial was terminated early because of limited resources. CONCLUSION: Planned prophylactic manual rotation did not result in fewer operative deliveries. More research is needed in the use of manual rotation from the occiput transverse position for preventing operative deliveries.
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Presentación en Trabajo de Parto , Complicaciones del Trabajo de Parto , Cesárea , Extracción Obstétrica , Femenino , Humanos , Embarazo , Ultrasonografía PrenatalRESUMEN
OBJECTIVE: The primary objective of this systematic review was to assess the association between spontaneous vaginal delivery and manual rotation during labor for occiput posterior or transverse positions. Our secondary objective was to assess maternal and neonatal outcomes. DATA SOURCES: An electronic search of PubMed, EMBASE, ClinicalTrials.gov, and the Cochrane Register of Controlled Trials covered the period from January 2000 to September 2021, without language restrictions. STUDY ELIGIBILITY CRITERIA: The eligibility criteria included all randomized trials with singleton pregnancies at ≥37 weeks of gestation comparing the manual rotation groups with the control groups. The primary outcome was the rate of spontaneous vaginal delivery. Additional secondary outcomes were rate of occiput posterior position at delivery, operative vaginal delivery, cesarean delivery, postpartum hemorrhage, obstetrical anal sphincter injury, prolonged second stage of labor, shoulder dystocia, neonatal acidosis, and phototherapy. Subgroup analyses were performed according to types of position (occiput posterior or occiput transverse), techniques used (whole-hand or digital rotation), and parity (nulliparous or parous). METHODS: The quality of each study was evaluated with the revised Cochrane risk-of-bias tool for randomized trials, known as RoB 2. The meta-analysis used random-effects models depending on their heterogeneity, and risks ratios were calculated for dichotomous outcomes. RESULTS: Here, 7 of 384 studies met the inclusion criteria and were selected. They included 1402 women: 704 in the manual rotation groups and 698 in the control groups. Manual rotation was associated with a higher rate of spontaneous vaginal delivery: 64.9% vs 59.5% (risk ratio, 1.09; 95% confidence interval, 1.03-1.16; P=.005; 95% prediction interval, 0.90-1.32). This association was no longer significant after stratification by parity or technique used. Manual rotation was associated with spontaneous vaginal delivery only for the occiput posterior position (risk ratio, 1.08; 95% confidence interval, 1.01-1.15). Furthermore, it was associated with a reduction in occiput posterior or transverse positions at delivery (risk ratio, 0.64; 95% confidence interval, 0.48-0.87) and episiotomies (risk ratio, 0.84; 95% confidence interval, 0.71-0.98). The groups did not differ significantly for cesarean deliveries, operative vaginal deliveries, or neonatal outcomes. CONCLUSION: Manual rotation increased the rate of spontaneous vaginal delivery.
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Parto Obstétrico , Presentación en Trabajo de Parto , Cesárea , Parto Obstétrico/métodos , Femenino , Humanos , Recién Nacido , Paridad , Embarazo , Ensayos Clínicos Controlados Aleatorios como AsuntoRESUMEN
OBJECTIVE: Persistent occiput posterior and occiput transverse positions are associated with adverse maternal and neonatal outcomes. The objective of this study was to assess if the use of hands-and-knees posturing increased the rate of occiput anterior position immediately after posturing during the second stage of labor or at the time of birth. DATA SOURCES: An electronic search of PubMed, EMBASE, Clinicaltrials.gov, and Cochrane Central Register of Controlled Trials was performed from inception to September 2020. STUDY ELIGIBILITY CRITERIA: Eligibility criteria included all randomized controlled trials of singleton gestations at ≥36 weeks' gestation that were randomized to either the hands-and-knees posture group or control group. The primary outcome was a composite of occiput anterior positioning during the second stage of labor or at birth. Individual components of the composite were assessed as secondary outcomes. Additional secondary outcomes were a change to occiput anterior position immediately after the intervention, use of regional anesthesia, duration of labor, mode of delivery, third- or fourth-degree perineal laceration, neonatal birthweight, and Apgar score less than 7 at 5 minutes. METHODS: The methodological quality of all the included studies was evaluated using the Cochrane Handbook for Systematic Reviews of Interventions. A meta-analysis was performed using the random effects model of DerSimmonian and Laird to produce a summary of the treatment effects in terms of relative risk or mean difference with 95% confidence intervals. RESULTS: Of the 1079 studies screened, 5 met the inclusion criteria (n=1727 hands-and-knees posture vs n=1641 controls). When compared with the control group, patients who adopted the hands-and-knees posture had the same rate of occiput anterior positioning in the second stage of labor or at birth (81.2% vs 81.2%; relative risk, 1.03; 95% confidence interval, 0.92-1.14), as well as immediately after the intervention (34.1% vs 18.0%; relative risk, 1.60; 95% confidence interval, 0.88-2.90). On the basis of the post hoc subgroup analysis of patients with an ultrasound-diagnosed malposition before posturing, there was a higher rate of occiput anterior positioning immediately after the intervention (17.0% vs 10.3%; relative risk, 1.63; 95% confidence interval, 1.06-2.52), but this relationship did not persist at delivery. The remainder of the subgroup analyses and secondary outcomes were not significant. CONCLUSION: Adopting a hands-and-knees posture does not increase the rate of occiput anterior positioning at time of delivery.
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Mano , Presentación en Trabajo de Parto , Femenino , Feto , Edad Gestacional , Humanos , Embarazo , Atención PrenatalRESUMEN
INTRODUCTION: Malposition complicates 2-13% of births at delivery, leading to increased obstetric interventions (cesarean section and instrumental delivery) and higher rates of adverse fetal and maternal outcomes. Limited data are available regarding the likely rates of obstetric intervention and subsequent neonatal and maternal outcomes of births with babies in persistent occiput posterior position vs those in persistent occiput transverse position. The UK Audit and Research trainee Collaborative in Obstetrics and Gynecology (UK-ARCOG) network set out to collect data prospectively at delivery on final mode of delivery and immediate outcomes. MATERIAL AND METHODS: The UK-ARCOG network collected data on all births with malposition of the fetal head complicating the second stage of labor (n = 838) (occiput posterior/occiput transverse) requiring rotational vaginal operative birth or emergency cesarean to expedite delivery across 66 participating UK National Health Service maternity units over a 1-month period. The outcomes considered were the need for emergency cesarean section without a trial of instrumental delivery, success of the first method of delivery employed in achieving a vaginal delivery and neonatal/maternal outcomes. RESULTS: Obstetricians regarded assistance with an operative vaginal delivery method to be unsafe in 15% of babies in occiput posterior position and 6.1% of babies in occiput transverse position, and they were delivered by primary emergency cesarean section. When vaginal delivery was deemed safe (defined as attempted assisted vaginal rotational delivery), the first instrument attempted was successful in 74.4% of occiput posterior babies and 79.3% of occiput transverse babies. CONCLUSIONS: Our data facilitates decision making by obstetricians to increase safety of assisted rotational operative delivery of a malpositioned baby at initial assessment and in counseling women. Until data from a well-designed randomized controlled trial of instrumental delivery vs emergency cesarean section are available, this manuscript provides contemporaneous national data from a high resource setting within a structured training program, to assist the selection of an appropriate instrument/method for the delivery of a malpositioned baby.