Induction Of Labor Research Articles

Implementation and Clinical Impact of a Guideline for Standardized, Evidence-Based Induction of Labor.

This study aimed to assess the impact of implementation of an induction of labor (IOL) guideline on IOL length and utilization of evidence-based practices. We conducted a quality improvement project to increase utilization of three evidence-based IOL practices: combined agent ripening, vaginal misoprostol, and early amniotomy. Singletons with intact membranes and cervical dilation ≤2 cm admitted for IOL were included. Primary outcome was IOL length. Secondary outcomes included cesarean delivery and practice utilization. We compared preimplementation (PRE; November 1, 2021 through January 31, 2022) to postimplementation (POST; March 1, 2022 through April 30, 2022) with sensitivity analyses by self-reported race and ethnicity. Cox proportional hazards models and logistic regression were used to test the association between period and outcomes. Among 495 birthing people (PRE, n = 293; POST, n = 202), IOL length was shorter POST (22.0 vs. 18.3 h, p = 0.003), with faster time to delivery (adjusted hazard ratio [aHR] 1.38, 95% CI 1.15-1.66), more birthing people delivered within 24 hours (57 vs. 68.8%, adjusted odds ratio [aOR] 1.90 [95% CI 1.25-2.89]), and no difference in cesarean. Utilization of combined agent ripening (31.1 vs. 42.6%, p = 0.009), vaginal misoprostol (34.5 vs. 68.3%, p < 0.001), and early amniotomy (19.1 vs. 31.7%, p = 0.001) increased POST. Implementation of an evidence-based IOL guideline is associated with shorter induction time. Additional implementation efforts to increase adoption of practices are needed to optimize outcomes after IOL. · Implementation of an IOL guideline is associated with faster time to delivery.. · Evidence-based induction practices were used more often after guideline implementation.. · Adoption of evidence-based induction practices is variable even with a guideline..

Outcome of induction of labour at 41 weeks with foley catheter in midwifery-led care

ObjectiveAssess the outcome of induction of labour (IOL) with a Foley catheter in pregnancies at 41 weeks in midwifery-led care setting compared to consultant-led care setting. DesignMixed-methods cohort study at a midwifery – hospital partnership in Amsterdam, the Netherlands. Setting and participantsProspectively, women undergoing IOL in midwifery-led care were recruited at a secondary hospital. This group was compared to a retrospective cohort, in which IOL was exclusively performed under consultant-led care. Measurements and findingsWe compared 320 women whose induction started in midwifery-led care to a historical cohort of 320 women induced for the same reason under consultant-led care. Both groups exhibited similar rates of spontaneous vaginal births (64.2 %vs62.5 %). Caesarean section and assisted vaginal birth rates did not significantly differ. Maternal adverse outcomes were comparable, while neonatal adverse outcomes were significantly higher in the midwifery-led care group (8.1 %vs3.8 %; OR 2.27, 95 % CI 1.12–4.58). The use of pain relief was significantly lower in midwife-led care (65.3 %vs75.3 %; OR 0.62, 95 % CI 0.44–0.87). 20.6 % of births occurred in midwife-led care. Key conclusions and implications for practiceIn this single-centre study, spontaneous vaginal birth rates following IOL with a Foley catheter were similar between midwife- and consultant-led care. However, the midwife-led group showed a higher risk of adverse neonatal outcomes, mainly early onset neonatal sepsis, with a minority eventually delivering under midwife-led care. Implications highlight the need for broader research, validation across diverse settings and exploration of patient and healthcare worker perspectives to refine the evolving midwifery-led care model.

Prediction of Failure to Progress after Labor Induction: A Multivariable Model Using Pelvic Ultrasound and Clinical Data.

Objective: Labor induction is one of the leading causes of obstetric admission. This study aimed to create a simple model for predicting failure to progress after labor induction using pelvic ultrasound and clinical data. Material and Methods: A group of 387 singleton pregnant women at term with unruptured amniotic membranes admitted for labor induction were included in an observational prospective study. Clinical and ultrasonographic variables were collected at admission prior to the onset of contractions, and labor data were collected after delivery. Multivariable logistic regression analysis was applied to create several models to predict cesarean section due to failure to progress. Afterward, the most accurate and reproducible model was selected according to the lowest Akaike Information Criteria (AIC) with a high area under the curve (AUC). Results: Plausible parameters for explaining failure to progress were initially obtained from univariable analysis. With them, several multivariable analyses were evaluated. Those parameters with the highest reproducibility included maternal age (p < 0.05), parity (p < 0.0001), fetal gender (p < 0.05), EFW centile (p < 0.01), cervical length (p < 0.01), and posterior occiput position (p < 0.001), but the angle of descent was disregarded. This model obtained an AIC of 318.3 and an AUC of 0.81 (95% CI 0.76-0.86, p < 0.0001) with detection rates of 24% and 37% for FPRs of 5% and 10%. Conclusions: A simplified clinical and sonographic model may guide the management of pregnancies undergoing labor induction, favoring individualized patient management.

Chronic Pain Management in Pregnancy: A Review of the Literature

Objective: This review summarizes current literature and explores issues involved in the management of pregnant women with chronic pain conditions. Methods: Articles in this review were selected through searches of Scopus, Cumulative Index of Nursing and Allied Health Literature (CINAHL), Cochrane Library, and MEDLINE databases. “Grey” literature such as cross-references from identified articles, clinical recommendations, professional consensus, bibliographies from review articles, and book chapters were also examined for appropriate material. Results: The search yielded 18,401 results in total; however, the majority related to management of labour pain, physiological pain in pregnancy, chronic pain in the nonpregnant population, and opioid maintenance in pregnancy for substance- dependent women. These results were therefore excluded. Sixteen relevant articles were included. A lack of high-quality research in the area, a potential for increased maternal and fetal complications, and the need for multidisciplinary input were identified as issues. Discussion: This is one of the first literature reviews to assess the management of women with chronic pain conditions who become pregnant. Poorly managed chronic pain can have adverse effects on the mother and lead to premature induction of labour and birth of the infant. Despite the apparent risks, there remains an absence of research in this field. Conclusion: It is imperative that research and clinical education are continued in this field. This will enable health care clinicians to provide women with appropriate, evidence-based options for their prenatal care, as well as effective, ongoing management of chronic pain conditions during pregnancy. This article has been peer reviewed.

Pregnancy and obstetric outcomes after fertility-sparing management of endometrial cancer and atypical hyperplasia: a multicentre cohort study.

What are the pregnancy and obstetric outcomes in women with atypical hyperplasia (AH) or early-stage endometrial cancer (EC) managed conservatively for fertility preservation? The study found a live birth rate of 62% in patients with AH or EC after conservative treatment, with higher level of labour induction, caesarean section, and post-partum haemorrhage. Fertility-sparing treatment is a viable option for women with AH or EC during childbearing years, but the outcomes of such treatments, especially regarding pregnancy and obstetrics, need further exploration. This retrospective cohort study analysed data from January 2010 to October 2022, involving 269 patients from the French national register of patients with fertility-sparing management of AH/EC. Women above 18 years of age, previously diagnosed with AH/EC, and approved for fertility preservation were included. Patients were excluded if they were registered before 2010, if their treatment began <6 months before the study, or if no medical record on the pregnancy was available. In total, 95 pregnancies in 67 women were observed. Pregnancy was achieved using ART in 63 cases (66%) and the live birth rate was 62%, with early and late pregnancy loss at 26% and 5%, respectively. In the 59 cases resulting in a live birth, a full-term delivery occurred in 90% of cases; 36% of cases required labour induction and 39% of cases required a caesarean section. The most common maternal complications included gestational diabetes (17%) and post-partum haemorrhaging (20%). The average (±SD) birthweight was 3110 ± 736 g; there were no significant foetal malformations in the sample. No significant difference was found in pregnancy or obstetric outcomes between ART-obtained and spontaneous pregnancies. However, the incidence of induction of labour, caesarean section, and post-partum haemorrhage appears higher than in the general population. The retrospective nature of the study may introduce bias, and the sample size might be insufficient for assessing rare obstetric complications. This study offers valuable insights for healthcare providers to guide patients who received fertility-sparing treatments for AH/EC. These pregnancies can be successful and with an acceptable live birth rate, but they seem to be managed with caution, leading to possible tendency for more caesarean sections and labour inductions. No increase in adverse obstetric outcomes was observed, with the exception of suspicion of a higher risk of post-partum haemorrhaging, to be confirmed. No funding was received for this study. There are no conflicts of interest to declare. N/A.

Contained Uterine Rupture Managed Conservatively after Vaginal Delivery

Background Uterine rupture in an otherwise unscarred uterus is a rare event, with most sources describing it on the order of 1/5700 to 1/20,000 deliveries [1]. Risk factors include high multiparity, use of uterotonics, advanced maternal age, macrosomia, malpresentation, placental invasion, and prolonged labor [2-3]. Historically, management of this complication involves exploratory laparotomy with surgical repair or hysterectomy. Few reports have been published that describe conservative management in the setting of uterine rupture. Objective(s) To describe the conservative management of contained uterine rupture. Study Design Case report Case Summary A 39-year-old gravida 5, para 4 with history of pre-eclampsia was admitted for induction of labor at 40 weeks 0 days. Her intrapartum labor was complicated by pre-eclampsia with severe features. She had a vaginal delivery after 20 hours of induction without immediate complications. Following delivery, the patient complained of severe right lower quadrant pain, which was treated with escalating pain regimen, but continued to worsen. A CT scan was obtained, which revealed a right retroperitoneal hematoma with findings suspicious for uterine rupture. The patient was taken to the operating room for exploratory laparotomy with findings of a right-sided broad ligament hematoma measuring 15 cm by 6 cm, extending into the retroperitoneal space. The surgery ended without additional procedures since the patient was hemodynamically stable, and the hematoma was non-expanding. Postoperatively, she was started on a multimodal pain regimen, and eventually discharged on postoperative day 3 after pain improved. Conclusion We describe a contained uterine rupture noted in the immediate postpartum period after an uncomplicated vaginal delivery. Our patient had several risk factors for uterine rupture such as advanced maternal aged, high multiparity, and macrosomia. Surgical exploration noted a large non-expanding hematoma overlying the site of suspected uterine rupture, which was stable. In an otherwise hemodynamically stable patient with contained uterine rupture, conservative management is a reasonable option.

Transvaginal Ultrasound Versus Bishop Score in Predicting Labour Dystocia at Full-Term Nullipara Undergoing Labour Induction.

Precise assessment of cervical conditions before labor induction is crucial for predicting the success of normal vaginal delivery. The cervix primary condition has a significant value in determining the succession of induction of labour. Traditionally, assessment of cervix before induction has been based on a cervix digital examination using Bishop's scoring method.This study compares transvaginal ultrasonographic (TVS) cervical assessment with the traditional Bishop score in nulliparous women undergoing labor induction, aiming to evaluate their predictive abilities for labor dystocia. In a prospective observational study of 200 pregnant women at Al Hussein University Hospital between October 2022 and July 2023, cervical length, funneling, and posterior cervical angle were measured using transvaginal ultrasound. The Bishop score was recorded before induction. Statistical analyses, including Student's "t"-test and ROC curve, were conducted using SPSS. 68% delivered via normal vaginal delivery (NVD) and 32% via cesarean section (CS). The NVD group exhibited significantly higher Bishop scores (6.82±1.36 vs 3.70±0.94), lower cervical length (25.46±3.99 vs 37.34±2.09), and higher cervical angle (121.39±5.70 vs 89.01±6.09), than the CS group. ROC curve analysis revealed that a Bishop score ≥4.5 had 89% sensitivity and 87.5% specificity, a cervical angle ≥ 92.5 had 98.5% sensitivity and 95.3% specificity, and a cervical length ≥31.5 had 96.9% sensitivity and 97.1% specificity for predicting NVD. The posterior cervical angle, alongside cervical length, proves to be a more sensitive indicator for predicting labor dystocia during induction compared to the traditional Bishop score.

Factors Associated with Obstetric Anal Sphincter Injury During Vacuum-Assisted Vaginal Delivery.

Obstetric anal sphincter injury (OASI) is a major complication associated with vacuum-assisted vaginal delivery (VAVD). The aim of this study was to evaluate risk factors related to vacuum extraction that are associated with OASI. This was a case-control study performed at a tertiary university teaching hospital. Included were patients aged 18-45years who had a singleton pregnancy resulting in a live, term, VAVD. The study group consisted of women diagnosed with OASI following vacuum extraction. The control group included women following VAVD without OASI. Matching at a ratio of 1:2 was performed. Groups were compared regarding demographic, obstetric. and labor-related parameters, specifically focusing on variables related to the vacuum procedure itself. One hundred and ten patients within the study group and 212 within the control group were included in the final analysis. Patients in the OASI group were more likely to undergo induction of labor, use of oxytocin during labor, increased second stage of labor, higher likelihood of the operator being a resident, increased number of pulls, procedure lasting under 10min, occipito-posterior head position at vacuum initiation, episiotomy, increased neonatal head circumference, and birthweight. Multivariate logistic regression analysis revealed that increased week of gestation (OR 1.67, 95% CI 1.25-2.22, p < 0.001), unsupervised resident performing the procedure (OR 4.63, 95% CI 2.17-9.90), p < 0.001), indication of VAVD being fetal distress (OR 2.72, 95% CI 1.04-7.10, p = 0.041), and length of procedure under 10min (OR 4.75, 95% CI 1.53-14.68, p = 0.007) were associated with OASI. Increased maternal age was associated with lower risk of OASI (OR 0.9, 95% CI 0.84-0.98, p = 0.012). When performing VAVD, increased week of gestation, unsupervised resident performing the procedure, fetal distress as vacuum indication, and vacuum procedure under 10min were associated with OASI. In contrast, increased maternal age was shown to be a protective factor.

Complete rupture of the pregnant uterus: A 12-year retrospective study.

To assess the frequency of uterine ruptures, clinical characteristics, and maternal and neonatal outcomes in a tertiary referral center. Information on complete uterine rupture between July 2010 and June 2022 was investigated retrospectively at a tertiary center. There were 42 cases of complete uterine rupture in 144 474 deliveries, with an incidence rate of 0.029%. Twenty-seven cases had a scarred uterus and 15 had an unscarred uterus; Rupture of the lower uterine segment was predominant in the scarred uterus, whereas rupture of the body of the uterus was predominant in the non-scarred uterus (P ≤ 0.001). Newborns with Apgar score of 7 or less at 1 min in the non-scarred uterus group was more than that in the scarred uterus group (P = 0.001). There were no significant differences in the history of gynecologic surgery, induction of labor, mode of delivery, clinical features, maternal outcomes, neonatal weight, preterm birth rate, 5-min Apgar score, or neonatal mortality between the two groups (P > 0.05). The clinical manifestations of uterine rupture are mainly abdominal pain, abnormal fetal heartbeat, or vaginal bleeding. Attention should also be paid to the history of previous uterine surgery. Strict prenatal management, early identification, and aggressive management can help improve maternal and child outcomes. Hysterectomy is not imperative.

Evidence-Based Practices during Spontaneous and Cesarean Delivery

The aim of this research is to investigate evidence-based practices used for maternal optimal care during birth. Investigating the use of evidence-based practices for spontaneous and cesarean deliveries will contribute to maternal optimal care during delivery. This descriptive and cross-sectional study was completed with 371 women giving birth. The study was conducted in a maternity hospital in Turkey. The Descriptive Information Form and the Optimality Index-Turkey (OI-TR) were used in the data collection. The data were analyzed using descriptive statistics. In spontaneous and cesarean delivery groups, the nonstress test was performed in 100%. Skin-to-skin contact was not ensured between the mother and neonate in any of them (100%). Also, for spontaneous delivery group labor induction or augmentation was applied to 73.1%, there was no person providing support during labor (except the medical team) in any of them (100%), the non-supine position was not used at birth in any of them (100%) and episiotomy was applied to 59.1%. Our study results point to non evidence-based routine clinical practices in delivery were determined. This situation made the delivery process in the hospital far from optimal. This study revealed that midwives,nurses and clinicans should make knowledge and behavioral changes in their evidence-based practices.

Experience of dinoprostone vaginal insert using for cervical ripening and induction of labor

Introduction. Presently, preinduction and induction of labour is one of the approaches to improve maternal and perinatal outcomes. In this regard, the rate of labour induction is steadily increasing.Aim. To determine the efficacy and safety of dinoprostone vaginal insert for cervical ripening and labor induction.Materials and methods. The study included 81 women with a singleton pregnancy of 37 weeks. and more, cephalic presentation of the fetus, with the birth canal not ready and the presence of indications for induction of labor. Dinoprostone vaginal insert was placed for 24 hours or till onset of labor. After removal of the dinoprostone vaginal insert patient was undergoing cervical assessment by digital Bishop Score immediately. If labor didn’t start spontaneously, additional cervical ripening procedures may be considered or labor induction.Result. The Bishop score increased on average by 2 points after cervical ripening with dinoprostone vaginal insert. 77.78% of patients went into labor before dinoprostone vaginal insert removing. 71.6% of the women had the vaginal birth. The cesarean section rate was 29.6%. Failed labor induction was observed in 2.47% cases. All the children were born alive. The average weight of newborns corresponded to the general population. No infectious complications or significant side effects were recorded in the study.Conclusion. The use of dinoprostone vaginal insert is an effective method for cervical ripening (increase in Bishop score by an average of 2 points, p &lt; 0.05) and labor induction (onset of labor before removal of SVT in 78% of cases) with a good safety profile (there were no serious adverse or side effects).

The Impact on Birth Outcomes of Sonographic Fetal Weight Estimation in Neonatal Macrosomia.

Our objective was to examine the association between sonographic estimated fetal weight (EFW) and obstetrical and neonatal outcomes in women with neonatal macrosomia. This study, conducted at a tertiary university-affiliated hospital from 2017 to 2021, compared obstetrical and neonatal outcomes between two groups of women who delivered macrosomic newborns (actual birthweight ≥ 4,000 g): (1) those with EFW ≥ 3,800 g (suspected impending macrosomia) and (2) those with EFW < 3,800 g (unsuspected impending macrosomia). During the study period, 854 women with neonatal macrosomia attempted vaginal delivery. Only 9.2% had a sonographic EFW ≥ 4,000 g. Among women with EFW ≥ 3,800 g (n = 317) compared with EFW < 3,800 g (n = 537), the cesarean delivery (CD) rate was higher (17.0 vs. 10.5%, p = 0.004) and the operative delivery rate was lower (3.2 vs. 0.6%, p = 0.015). Among primiparous women, the CD rate was higher among those with EFW ≥ 3,800 versus <3,800 g (37.3 vs. 23.2%, p = 0.033). EFW ≥3,800 g was associated with CD, regardless of predelivery body mass index, parity, diabetes mellitus, maximal fetal weight at previous deliveries, actual birthweight, and labor induction (p = 0.014). EFW ≥ 3,800 g and diabetes mellitus were independent predictors of CD. Among women with EFW ≥3,800 g and diabetes mellitus, the risk of CD was double that of those without diabetes and with EFW ≥ 3,800 g (31.4% vs. 15.2%, p = 0.02), although their actual birthweights were similar. Obstetrical and neonatal outcomes were similar between those with sonographic EFW ≥ 3,800 and < 3,800 g. Larger EFW increased CD risk among pregnancies with actual neonatal macrosomia. Antenatally suspected macrosomia might alter labor management due to concerns for potential complications, especially when associated with primiparity, diabetes mellitus, or maternal obesity. The increase in the CD rate did not show an association with improved maternal and neonatal outcomes. · Antenatally suspected macrosomia might alter labor management due to concerns about complications.. · Larger EFW increased cesarean delivery risk among pregnancies with actual neonatal macrosomia.. · The increase in the cesarean delivery rate was not associated with improved outcomes..

For Patients Undergoing an Induction of Labor, Does Increased Body Mass Index Necessitate Higher Doses of Misoprostol? [ID 2683640

INTRODUCTION: Obesity is associated with prolonged induction of labor (IOL). This study aimed to investigate the association between body mass index (BMI) and number of misoprostol administrations in patients undergoing IOL. METHODS: This was a retrospective cohort analysis of patients undergoing IOL at a single institution from June 2012 to January 2023. Singleton, term patients receiving at least one dose of misoprostol were included (n=4,780). Body mass index at admission was defined as normal (18.5 to &lt;25.0), overweight (25 to &lt;30), Class I obesity (30 to &lt;35), Class II obesity (35 to &lt;40), and Class III (≥40). The primary outcome was the number of misoprostol doses. Demographics were compared by BMI category using chi-square and ANOVA. Crude and multiple linear regression was used to generate parameter estimates and 95% CIs. RESULTS: Among the cohort, 4.6%, 23.9%, 31.3%, 21.0%, and 19.2% were normal, overweight, Class I, Class II, and Class III, respectively. Public insurance, cHTN, HDP, and pre-gestational diabetes were positively associated with increasing BMI (P&lt;.0001). Mean misoprostol doses significantly increased across BMI categories (from normal 3.3 [SD 2.4] to Class III 5.0 [SD 3.6]; P&lt;.0001). Compared to normal BMI, model estimates increased for overweight, 0.75 (CI, 0.29–1.22); Class I, 1.03 (CI, 0.57–1.48); Class II, 1.40 (CI, 1.93–1.87); and Class III, 1.75 (CI, 1.28–2.22). After adjustment for aforementioned demographics, these estimates were attenuated but still significant. CONCLUSION: Increasing BMI is associated with increased average dose of misoprostol during IOL. This highlights the need to investigate safety of increased misoprostol dosing for IOL among obese patients.

Does Longer Second-Trimester Cervical Length Increase Likelihood of Labor Induction? [ID 2683543

INTRODUCTION: Second-trimester transvaginal cervical length (TVCL) under 2.5 cm is associated with increased rates of spontaneous preterm birth; however, little is known about the effect of increasing TVCLs on spontaneous labor rates. We aimed to determine if longer TVCL is associated with increased risk of induction of labor (IOL). METHODS: This is a retrospective cohort study of patients eligible for vaginal birth with singleton term gestations and normal TVCL (at 16–24 weeks of gestation) delivering at a tertiary care center June 2022 to June 2023. Rates of IOL were compared by TVCL tertiles (T1: 2.5–3.49 cm; T2: 3.5–4.49 cm; and T3: 4.5 cm or greater). Multivariable logistic regression controlled for potential confounders. Institutional review board approval was obtained. RESULTS: Of 1,027 eligible deliveries, 594 (58%) underwent IOL. Patients with TVCLs in T2 and T3 were significantly more likely to undergo IOL than patients with TVCL in T1 (T2 59.6% versus T1 49.4%, P=.02; T3 56.5%, P=.04). Patients in T2 had increased odds of IOL compared to those in T1 (OR 1.5 [CI, 1.1–2.1]). This relationship did not remain significant after adjusting for potential confounders including term delivery, delivery mode, race/ethnicity, age, and body mass index. The odds of IOL with TVCL in T3 were not significantly different than for those in T1, before and after adjusting for confounders. CONCLUSION: Within a cohort of patients with normal mid-trimester TVCL, increasing TVCLs were not associated with higher rates of IOL after adjusting for confounding variables. These results can be used to guide patient counseling surrounding birth plans and expectations for labor and delivery.

Oxytocin Compared With Prostaglandin as First Agent in Prelabor Rupture of Membranes [ID 2683446

INTRODUCTION: Prelabor rupture of membranes (PROM) occurs in 8% of term deliveries. After PROM, induction of labor (IOL) is recommended to decrease risk of intra-amniotic infection and time to delivery. Therefore, finding the safest, most effective way to induce labor in this patient population is important to clinical practice. METHODS: The goal of this investigation is to compare rate of vaginal delivery among patients receiving oxytocin versus prostaglandin as a first-line agent for IOL after PROM. Secondary outcomes include time to vaginal delivery, parity, and cervical dilation. This study involves a secondary analysis of an IRB-approved retrospective chart review investigating cervical ripening in all patients who delivered from 2020 to 2021 at our institution. RESULTS: A total of 365 patients presented with term PROM during the study period. The sample was primarily nulliparous (61.8%) with mean gestational age of 39.1 weeks. More patients in the oxytocin group than the prostaglandin group delivered vaginally (86.2% versus 82%). Patients treated with oxytocin as first agent were found to have faster time to any delivery than prostaglandin as first agent (median 14.9 versus 25.7 hours; P&lt;.001). This result was regardless of parity or whether a cervical exam was documented at time of presentation. CONCLUSION: In our study population, patients induced with oxytocin had a faster time to vaginal delivery without affecting risk of cesarean, regardless of nulliparity status or cervical dilation at time of presentation, supporting a more standard use of oxytocin as a first-line for term PROM IOL.

Maternal and Neonatal Characteristics Associated With Failed Induction of Labor in Diabetic Mothers [ID 2683497

INTRODUCTION: Uncontrolled diabetes is a risk factor for cesarean delivery. Identifying and stratifying associated risk factors for failed induction of labor (IOL) may improve counseling and intrapartum care. This study aims at determining maternal and fetal factors that would predict the occurrence of failed IOL in diabetic mothers. METHODS: This is a retrospective study of 2,172 diabetic mothers who underwent IOL at a single university medical center between January 2013 and December 2021. Maternal and neonatal characteristics were obtained. Among the studied maternal characteristics were ethnicity, age, gestational age, medical comorbidities (including preeclampsia and essential hypertension), insulin administration, parity, and health insurance type (public versus private). Statistical analysis was performed using univariate and multivariate logistic regression. A value of P&lt;.05 was considered statistically significant. RESULTS: Our preliminary analysis showed that 567 out of 2,172 (26.1%) diabetic mothers failed IOL and delivered via cesarean pathway. Failed IOL was associated with nulliparity (P=.0001), preexisting diabetes (compared to gestational diabetes) (P=.001), control of diabetes by insulin (P=.001), maternal essential hypertension (P=.001), preeclampsia (P=.001), polyhydramnios (P=.001), prenatal diagnosis of fetal growth restriction (P=.008), and placental abnormalities (P=.027). Neonatal weight, large for gestational age, head circumference, and height were not statistically associated with failed induction of labor (all values of P&gt;.05). Failed IOL was associated with admission to neonatal intensive care unit (P=.001), hyperbilirubinemia (P=.001), lower APGAR score at 1 minute (P=.033), longer stay in the hospital (0.001). Failed IOL was not associated with lower APGAR score at 5 minutes, lower umbilical cord pH value, neonatal readmission or maternal ethnicity (all values of P&gt;.05). CONCLUSION: Failed IOL among diabetic mothers is associated with significant maternal and neonatal adverse outcomes. Our continued data analysis aims at assessing the role of optimal glucose control and other maternal factors in improving maternal and neonatal outcomes.

Induction Method Combination in Patients With Hypertensive Disorders of Pregnancy [ID 2683632

INTRODUCTION: We aim to evaluate cesarean birth (CB) rates according to induction method combinations in patients with hypertensive disorders of pregnancy (HDP). METHODS: We conducted a retrospective study including singleton pregnancies with HDP admitted to labor and delivery at a tertiary center from January 2018 to December 2019. Clinical and sociodemographic data were extracted from electronic medical records. Pregnancies with incomplete data and those who declined a trial of labor were excluded. Hypertensive disorder of pregnancy was defined according to the American College of Obstetricians and Gynecologists classification. Cesarean birth rates were compared among induction agent combinations using binary logistic regression. A value of P&lt;.05 was considered significant. RESULTS: A total of 552 pregnancies met inclusion criteria. Of these, 113 were induced with oxytocin, 112 with mechanical agents and oxytocin, 58 with a mechanical method and prostaglandins, 31 received prostaglandins alone, 54 received oxytocin and prostaglandins, 80 received oxytocin, prostaglandins, and a mechanical agent, 35 were induced with mechanical methods, and 69 were in spontaneous labor. Demographic and baseline characteristics were not different by induction agent combination. After logistic regression, the combination of prostaglandins and mechanical agents was associated with a decreased CB rate; odds ratio, 0.4 (95% CI: 0.1–0.9), using those in spontaneous labor as reference. No other agent combination was associated with an increased or decreased in CB rate. CONCLUSION: Induction of labor with a combination of prostaglandins and mechanical agents may decrease CB rates compared with other combination methods for induction in pregnancies with HDP.

Accuracy of antenatal ultrasound in predicting large-for-gestational-age babies: population-based cohort study

Pregnancies with large for gestational age fetuses are at increased risk of adverse maternal and neonatal outcomes. There is uncertainty about how to manage birth in such pregnancies. Current guidelines recommend a discussion with women of the pros and cons of options including expectant management, induction of labour and caesarean birth. For women to be able to make an informed decision about birth, antenatal detection of large for gestational age is essential. To investigate the ability of antenatal ultrasound scans to predict large for gestational age at birth. In this retrospective cohort study, we analysed data from a routinely collected database from the West Midlands, United Kingdom. We included pregnancies that had an antenatal ultrasound estimated fetal weight between 35+0 and 38+0 weeks gestation for any indication, as well as a subgroup where the reason for scan was that the fetus was suspected to be big. Large for gestational age was defined as >90th customized GROW centile, for estimated fetal weight as well as for neonatal weight. We also tested performance of an uncustomized standard, with Hadlock fetal weight >90th centile and neonatal weight >4kg. We calculated diagnostic characteristics for the whole population as well as groups with different maternal body mass indices. The study cohort consisted of 26,527 pregnancies which on average had a scan at 256 days gestation and delivered 20 days later at a median of 276 days (interquartile range 15). In total 2241 (8.4%) of neonates were large for gestational age by customized centiles, of which 1459 (65.1%) had a scan estimated fetal weight >90th centile, with a false positive rate of 8.6% and a positive predictive value of 41.0%. In the subgroup of 912 (3.4%) pregnancies scanned for a suspected large fetus, 293 (32.1%) babies were large for gestational age at birth, giving a positive predictive value of 50.3%, with sensitivity of 77.1% and false positive rate 36.0%. When comparing subgroups from low (<18.5kg/m2) to high body mass index (>30kg/m2), sensitivity increased from 55.6 to 67.8%, false positive rate from 5.2 to 11.5% and positive predictive value from 32.1 to 42.3%. A total of 2585 (9.7%) babies were macrosomic (birthweight >4kg), and of these 1058 (40.9%) were large for gestational age (>90th centile) antenatally by Hadlock's growth standard, with a false positive rate of 4.9% and a positive predictive value 41.0%. Analysis within subgroups showed better performance by customized compared to uncustomized standards for low body mass index (<18.5; diagnostic odds ratio 23.0 vs 6.4) and high body mass index (>30; diagnostic odds ration 16.2 vs 8.8). Late third trimester ultrasound estimation of fetal weight for any indication has good ability to identify and predict large for gestational age at birth, and improves with the use of a customised standard. Detection rate is better when ultrasound is performed for a suspected large fetus, however at the risk of higher false positive diagnosis. Our results provide information for women and clinicians to aid antenatal decision making about birth of a fetus suspected of being large for gestational age.

Relationships Among Mode of Birth, Onset of Labor, and Bishop Score

ObjectiveTo investigate mode of birth in relation to onset of labor and Bishop score. DesignRetrospective observational cohort design. SettingA 434-bed Magnet redesignated community hospital. ParticipantsNulliparous women, 18 years of age or older, who gave birth at 37 to 41 weeks gestation to live, singleton fetuses in the vertex presentation (N = 701). MethodsWe conducted a retrospective chart review and used chi-square analysis to measure the associations among mode of birth, onset of labor, and Bishop score. We used logistic regression to test the probability of cesarean birth for women undergoing elective induction of labor. ResultsMost participants (n = 531, 75.7%) gave birth vaginally. Significant findings included the following relationships: spontaneous onset of labor and vaginal birth (χ2 = 22.2, Ø = 0.18, p < .001) and Bishop score of greater than or equal to 8 and vaginal birth (χ2 = 4.9, Ø = .14, p = .028). Induction of labor was a significant predictor in cesarean birth when controlling for age and body mass index (OR = 2.1, 95% confidence interval [1.5, 3.1], p < .001). ConclusionReducing elective induction of labor in women with low-risk pregnancies may help lower the risk of cesarean birth. Clinically, Bishop score and mode of birth have a weak association, particularly when induction includes cervical ripening.

Amniotic Fluid Volume: An Important Deciding Factor for Pregnancy Continuation in Preterm Premature Rupture of Membranes

Abstract Aims and Objectives: To find out various risk factors affecting fetomaternal outcomes in preterm premature rupture of membranes (PPROM). Materials and Methods: A prospective study after approval from the ethical committee was conducted at VMMC and Safdarjung Hospital, New Delhi, Department of Obstetrics and Gynaecology from December 2020 to May 2022 in which 100 pregnant women with preterm premature rupture of membrane between 32 and 36 weeks of gestation were enrolled. Patients were followed with Total leucocyte count (TLC), urine R/M, urine C/S, high vaginal swab C/S, and C-reactive protein along with routine antenatal care investigations. Intravenous antibiotics were given to all patients for 48 h followed by oral antibiotics for 5 days. All patients were on follow-up and managed conservatively and induction of labor was done at 37 weeks or earlier in case of fetal distress and presence of signs and symptoms of chorioamnionitis. Both mother and baby were followed till 7 days after delivery. Results: In the present study, we observed the following risk factors that had adverse effects on fetomaternal outcomes in PPROM patients. The association of oligohydramnios (amniotic fluid index [AFI] &lt;5) with neonatal sepsis (P = 0.025) and neonatal death (P = 0.025) was found to be significant. Vaginal infection was found to be significantly associated with birth asphyxia (P = 0.024), APGAR &lt;7 at 1 min (P = 0.015), neonatal intensive care unit (NICU) admission (P = 0.009), and postpartum hemorrhage (PPH) (P = 0.002). The association of urinary tract infection (UTI) with neonatal sepsis (P = 0.01), birth asphyxia (P = 0.005), APGAR &lt;7 at 1 min (P = 0.001), NICU admission (P = 0.002), neonatal death (P = 0.01), and PPH (P = 0.0004) was found to be significant. We also observed that the duration from membrane rupture to delivery had no adverse effect on fetomaternal outcome, may be as we had given antibiotics to all patients from the time of admission. Conclusions: The conclusion from the present study was that oligohydramnios (AFI &lt;5) is a significant risk factor for adverse neonatal outcomes in PPROM along with vaginal infections and UTIs. Hence, amniotic fluid volume should also be considered as an important deciding factor for pregnancy continuation in PPROM.