Primary Cesarean Delivery Rate Research Articles

Fetal abdominal obesity in women with one value abnormality on diagnostic test for gestational diabetes mellitus.

Previous studies have shown that fetal abdominal obesity (FAO) was already observed at the time of gestational diabetes mellitus (GDM) diagnosis and persisted until delivery despite management in older and/or obese women. In this study, we investigated whether fetuses of women with milder hyperglycemia than GDM have accelerated abdominal growth, leading to adverse pregnancy outcomes. We retrospectively reviewed the medical records of 7,569 singleton pregnant women who were universally screened using a 50-g glucose challenge test (GCT) and underwent a 3-h 100-g oral glucose tolerance test (OGTT) if GCT result was ≥140mg/dL. GDM, one value abnormality (OVA), and normal glucose tolerance (NGT, NGT1: GCT negative, NGT2: GCT positive & OGTT negative) were diagnosed using Carpenter-Coustan criteria. With fetal biometry data measured simultaneously with 50-g GCT, relative fetal abdominal overgrowth was investigated by assessing the fetal abdominal overgrowth ratios (FAORs) of the ultrasonographically estimated gestational age (GA) of abdominal circumference(AC) per actual GA by the last menstruation period(LMP), biparietal diameter(BPD) or femur length(FL), respectively. FAO was defined as FAOR ≥90th percentile The FAORs of GA-AC/GA-LMP and GA-AC/GA-BPD were significantly higher in OVA subjects compared to NGT subjects but not in NGT2 subjects. Although the frequency of FAO in OVA (12.1%) was between that of NGT (9.6%) and GDM (18.3%) without statistically significant difference, the prevalence of large for gestational age at birth and primary cesarean delivery rates were significantly higher in OVA (9.8% and 29.7%) than in NGT (5.1% and 21.5%, p<0.05). Particularly, among OVA subjects with FAO, the prevalence (33.3% and 66.7%) was significantly higher than in those without FAO (9.7% and 24.2%, p<0.05). The degree of fetal abdominal growth acceleration in OVA subjects was intermediate between that of NGT and GDM subjects. OVA subjects with FAO at the time of GDM diagnosis were strongly associated with adverse pregnancy outcomes.

What's in a Name? Provider Type and Delivery Outcomes for Nulliparous, Term, Singleton, Vertex Pregnancies in an Urban Hospital [ID 2683515

INTRODUCTION: Few studies have compared the rates of cesarean section of nulliparous, term, singleton, vertex (NTSV) pregnancies between those managed by physicians and those managed by midwives. Our aim was to compare those rates and to determine whether there were any associated differences in neonatal outcomes. METHODS: This was a retrospective cohort study of NTSV pregnancies at an urban hospital over 3 months. Two groups were compared: patients who were managed by physicians and those managed by midwives. Our primary outcome was the rate of primary cesarean delivery for each group. Patient demographics and outcomes were compared using a χ2 analysis for categorical variables and Mann–Whitney U test for continuous variables, with significance being alpha &lt;.05. Our study was approved by the Maimonides IRB. RESULTS: Between January and March 2023, there were 315 NTSV deliveries. Of these, 230 (73%) were admitted by physicians and 85 by certified nurse-midwives (27%). The NTSV patients admitted and managed by physicians were significantly more likely to undergo cesarean delivery (30.9% versus 16.5%; P=.01). This trend remains significant (P=.04) when adjusted for high-risk maternal comorbidities (ie, diabetes, hypertension, and maternal body mass index). There were no significant differences of neonatal outcomes between physician and midwives groups in Apgar scores (1 minute P=.43, 5 minutes P=.19), neonatal intensive care unit (NICU) admissions (P=.84), or NICU stay length (P=.89). CONCLUSION: The NTSV pregnancies managed by midwives resulted in fewer cesarean deliveries with similar neonatal outcomes. Further investigation is needed to assess causes of the difference between provider types and to develop interventions to address the discrepancy.

Obstetrics and fetal outcomes in pregnant women with beta-blocker treatment in maternal arrhythmia

Aim: The aim of this study was to investigate the pregnancy prognosis of patients taking beta-blockers for the treatment of cardiac arrhythmias.&#x0D; Materials and Method: This study was a retrospective observational study involving 50 pregnant women with cardiac arrhythmias and 55 healthy pregnant women, admitted between January 1, 2020 and January 1, 2022, to Ankara City Hospital. Beta-blockers were classified into three groups: metaprolol, propranolol, and bisoprolol. The use of beta-blockers was examined in two groups: high-dose and low-dose. For pregnancy outcome, birth week, birth weight and birth weight Z-score, the bHCG MoM and PAPP-A MoM, neonatal APGAR score, and neonatal intensive care unit admission rates were determined. Statistical analysis was performed using IBM SPSS Statistics 26.0 (IBM Corp, Armonk, NY, USA). Shapiro-Wilk and Kolmogorov-Smirnov tests were both used to evaluate normality of variables. Groups were compared using the Student t-test and the Mann-Whitney U test. P-values &lt; 0.05 were considered as statistically significant.&#x0D; Results: The patient group taking beta-blockers had a statistically significant earlier delivery week than the group without beta-blocker use (p=0.000). The rate of primary cesarean deliveries was higher in the study group (p=0.007). Birth weight and APGAR score at the fifth minute was significantly lower in the study group, and NICU admission rate was significantly higher (p=0.006, p=0.000 and p=0.000, respectively). &#x0D; Conclusion: Beta-blockers, a first-line therapy for maternal arrhythmias, may affect fetal development and pregnancy outcomes. İt is recommended that these drugs to be administered are meticulously selected for appropriate subgroups, with lowest effective doses

The association between unintended hysterotomy extensions with cesarean delivery and subsequent preterm birth

BackgroundAn increased risk of preterm birth has been observed among individuals with a previous second stage cesarean delivery compared with a previous vaginal delivery. One mechanism that may contribute to the increased risk of preterm birth following second stage cesarean delivery is the increased risk of cervical injury due to extension of the uterine incision (hysterotomy) into the cervix. Investigating the contribution of hysterotomy extension to the rate of preterm birth has not been well-studied and may shed light on the mechanisms underlying the observed relationship between mode of delivery and subsequent preterm birth. ObjectiveWe aimed to quantify the association between unintended hysterotomy extension and preterm birth in a subsequent delivery. Study designWe performed a retrospective cohort study using electronic perinatal data collected in two university-affiliated obstetrical centers. The study included patients with a primary cesarean delivery of a term, singleton live birth and a subsequent singleton birth in the same catchment (2005-2021). The primary outcome was subsequent preterm birth <37 weeks; secondary outcomes included subsequent preterm birth <34, <32 and <28 weeks. We assessed crude and adjusted associations between unintended hysterotomy extensions and subsequent preterm birth with log binomial regression models using rate ratios (RRs) and 95% confidence intervals (CIs). Adjusted models included several characteristics of the primary cesarean delivery such as maternal age, length of active labour, indication for cesarean delivery, chorioamnionitis, and maternal comorbidity. ResultsA total 4,797 patients met the study inclusion criteria. The overall rate of unintended hysterotomy extension in the primary cesarean delivery was 6.0% and the total rate of preterm birth in the subsequent pregnancy was 4.8%. Patients with an unintended hysterotomy extension were more likely to have a longer duration of active labour, chorioamnionitis, failed vacuum delivery attempt, second stage cesarean delivery, and persistent occiput posterior position of the fetal head in the primary cesarean delivery and higher rates of smoking in the subsequent pregnancy. Multivariable analyses controlling for several confounders showed that a history of hysterotomy extension is not associated with a higher risk of preterm birth <37 weeks gestation (adjusted RR 1.55, 95% CI 0.98-2.47), but is associated with preterm birth <34 weeks gestation (adjusted RR 2.49, 95% CI 1.06-5.42). ConclusionPatients with a uterine incision extension have a 2.5 times higher rate of preterm birth <34 weeks compared with patients who do not sustain this injury. This association was not observed for preterm birth <37 weeks. Future research should aim to replicate our analyses while incorporating additional data to minimize the potential for residual confounding.

The Combined Influence of Maternal Medical Conditions on the Risk of Primary Cesarean Delivery.

Background Common maternal medical comorbidities such as hypertensive disorders, diabetes, tobacco use, and extremes of maternal age, body mass index, and gestational weight gain are known individually to influence the rate of cesarean delivery. Numerous studies have estimated the risk of individual conditions on cesarean delivery. Objective To examine the risk for primary cesarean delivery in women with multiple maternal medical comorbidities to determine the cumulative risk they pose on mode of delivery. Study Design In this population-based retrospective cohort study, we analyzed data from Ohio live birth records from 2006 to 2015 to estimate the influence of individual and combinations of maternal comorbidities on rates of singleton primary cesarean delivery. The exposures were individual and combinations of maternal medical conditions (chronic hypertension [CHTN], gestational hypertension, pregestational diabetes, gestational diabetes, tobacco use, advanced maternal age, and maternal obesity) and outcomes were rates and adjusted relative risk (aRR) of primary cesarean delivery. Results There were 1,463,506 live births in Ohio during the study period, of which 882,423 (60.3%) had one or more maternal medical condition, and of those 243,112 (27.6%) had primary cesarean delivery. The range of rates and aRR range of primary cesarean delivery were 13.9 to 29.3% (aRR 0.78-1.68) in singleton pregnancies with a single medical condition, and this increased to 21.9 to 48.6% (aRR 1.34-3.87) in pregnancies complicated by multiple medical comorbidities. The highest risk for primary cesarean occurred in advanced maternal age, obese women with pregestational diabetes, and CHTN. Conclusion A greater number of maternal medical comorbidities during pregnancy is associated with increasing cumulative risk of primary cesarean delivery. These data may be useful in counseling patients on risk of cesarean during pregnancy.

Health Disparities in the Use of Primary Cesarean Delivery among Asian American Women.

This study examined the health disparities in primary cesarean delivery (PCD) use among Asian American (AA) women and within AA subgroups. We examined 22 years of birth registry data from one diverse northeastern state in the United States, including singleton vertex live births between 24 and 44 weeks of gestation without congenital abnormalities. Multivariate logistic regression was used to test the association between PCD and race and ethnicity groups adjusting for maternal demographic and health behaviors, infant gender and birth weight, gestational age, initiation of prenatal care, and other risk factors. Among the eligible sample, 8.3% were AA. AAs had the highest rate of PCD (18%) among all racial and ethnic groups. However, extensive heterogeneity was found among the AA subgroups. After controlling for confounding variables, compared to non-Hispanic White women, Filipino, Asian Indian, and Other Asian subgroups had a higher risk for PCD (Adj OR = 1.40, 1.37, and 1.21, p < 0.001), while Japanese, Chinese, and Korean had a lower risk (Adj OR = 0.57, 0.83, and 0.90, p < 0.001), and Vietnamese had no significant difference in PCD use. Although AA as a single racial and ethnic group had higher prevalence of PCD, more studies are warrantied to address the disproportional distribution of health disparities in PCD use within AA subgroups.

Reducing primary cesarean delivery rate through implementation of a smart intrapartum surveillance system

The rapid changes in clinical maternity situations that occur in a labor and delivery unit can lead to unpredictable maternal and newborn morbidities. Cesarean section (CS) rate is a key indicator of the accessibility and quality of a labor and delivery unit. This retrospective cross-sectional study assesses the nulliparous, term, singleton, vertex (NTSV) cesarean delivery rates before and after the implementation of a smart intrapartum surveillance system. Research data were collected from the electronic medical records of a labor and delivery unit. The primary outcome was the CS rate of the NTSV population. The data of 3648 women admitted for delivery were analyzed. Of the studied deliveries, 1760 and 1888 occurred during the preimplementation and postimplementation periods, respectively. The CS rate for the NTSV population was 31.0% and 23.3% during the preimplementation and postimplementation periods, respectively, indicating a significant 24.7% (p = 0.014) reduction in CS rate after the implementation of the smart intrapartum surveillance system (relative risk, 0.75; 95% confidence interval, 0.71–0.80). In the NTSV population, the vaginal and CS birth groups, no significant difference in terms of newborn weight, neonatal Apgar scores, composite neonatal adverse outcome indicator, and the occurrence of the following: neonatal intensive care unit admission, neonatal meconium aspiration, chorioamnionitis, shoulder dystocia, perineal laceration, placental abruption, postpartum hemorrhage, maternal blood transfusion, and hysterectomy before and after the implementation of the smart intrapartum surveillance system. This study reveals that the use of the smart intrapartum surveillance system can effectively reduce the primary CS rate for low-risk NTSV pregnancies without significantly affecting perinatal outcomes.

Comparison of Perinatal Outcomes Between Syrian Refugees and Turkish Women in the Middle Anatolia Region of Turkey.

To compare the results of perinatal outcomes between Syrian refugees and Turkish women between 2016 and 2020. The birth results of 17,997 participants (Syrian refugees: 3579 and Turkish women: 14,418) who delivered in the Labor Department of our hospital between January 2016 and December 2020 were retrospectively analyzed. Maternal age was younger (24.73 ± 6.08 vs. 27.4 ± 5.91 years, p < 0.001) and adolescent pregnancy rate was higher (19.4% vs. 5.6%, p < 0.001) in Syrian refuges than in Turkish women. Bishop scores on admission (4.6 ± 1.6 vs. 4.4 ± 1.1, p < 0.001), birth weight (3088.19 ± 575.32g vs. 3109.76 ± 540.89g, p = 0.044), low birth weight (11.3% vs. 9.7%, p = 0.004), and the rate of primary cesarean deliveries (10.1% vs. 15.8%, p < 0.001) were also statistically different. Additionally, the rates of anemia (65.9% vs. 29.2%, p < 0.001), preeclampsia (1.4% vs. 2.7%, p < 0.001), stillbirth (1.3% vs. 0.6%, p < 0.001), preterm premature rupture of membranes (2.7% vs. 1.9%, p = 0.002), and obstetric complications were different between the groups. This study showed that inadequate antenatal care, communication and language barrier problems in Syrian refugees caused some adverse perinatal outcomes. All birth data of Syrian refugees must be disclosed by the Ministry of Health to confirm the accuracy of our data.

Contemporary Trends in Cesarean Delivery Rates and Indications.

This study aimed to describe cesarean delivery rates and indications at a single center in order to assess the impact of the guidelines published by the American College of Obstetricians and Gynecologists and the Society for Maternal-Fetal Medicine on trends in labor management. This is a retrospective cohort study of patients ≥23 weeks' gestation delivering at a single tertiary care referral center from 2013 to 2018. Demographic characteristics, mode of delivery, and main indication for cesarean delivery were ascertained by individual chart review. Cesarean delivery indications (mutually exclusive) were the following: repeat cesarean delivery, nonreassuring fetal status, malpresentation, maternal indications (e.g., placenta previa or genital herpes simplex virus), failed labor (any stage labor arrest), or other (i.e., fetal anomaly and elective). Polynomial (cubic) regression models were used to model rates of cesarean delivery and indications over time. Subgroup analyses further examined trends in nulliparous women. Of the 24,637 patients delivered during the study period, 24,050 were included in the analysis; 7,835 (32.6%) had a cesarean delivery. The rates of overall cesarean delivery were significantly different over time (p < 0.001), declining to a minimum of 30.9% in 2014 and peaking at 34.6% in 2018. With regard to the overall cesarean delivery indications, there were no significant differences over time. When limited to nulliparous patients, the rates of cesarean delivery were also noted to be significantly different over time (p = 0.02) nadiring at 30% in 2015 from 35.4% in 2013 and then rising up to 33.9% in 2018. As for nulliparous patients, there was no significant difference in primary cesarean delivery indications over time except for nonreassuring fetal status (p = 0.049). Despite changes in labor management definitions and guidelines encouraging vaginal birth, the rates of overall cesarean delivery did not decrease over time. The indications for delivery, particularly failed labor, repeat cesarean delivery, and malpresentation have not significantly changed over time. · The rates of overall cesarean deliveries did not decrease despite the 2014 published recommendations for the reduction in cesarean deliveries.. · There were no significant differences in the indications of cesarean deliveries among nulliparous or multiparous women.. · Despite the adoption of strategies to reduce the overall and primary cesarean delivery rates, these trends remain unchanged.. · Indications for delivery, particularly failed labor, repeat cesarean delivery, and malpresentation have also not significantly changed over time.. · Additional strategies to encourage and increase vaginal delivery rates must be adopted..

Rate of Primary Cesarean Delivery by Language Preference among Nulliparas.

Sociodemographic factors such as race/ethnicity and socioeconomic status affect primary cesarean delivery rates. Language is associated with disparate health care outcomes but has not been well studied in obstetrics. We examined the association between primary unscheduled cesarean delivery rate and preferred patient language. A retrospective cohort study was conducted at an urban medical center between January 2017 and January 2020. Nulliparous women with early or full-term gestation and having no obstetric or medical contraindication to vaginal delivery were included. We used multivariable linear and logistic regressions to evaluate language differences in cesarean delivery odds and indication for cesarean. Of the 1,314 eligible women, 76.8% of patients preferred English, 17.8% Spanish, and 5.4% other languages. Overall cesarean delivery rate was 27.6%. Controlling for age, race/ethnicity, body mass index, insurance, gravidity, pregnancy comorbidities, labor induction, and infant birth weight, Spanish- and other language-speaking women had significantly higher odds of undergoing cesarean compared with English-speaking women (adjusted odds ratio [OR]: 1.75; 95% confidence interval [CI]: 1.25, 2.46). Relative proportions of indications for cesarean did not differ by language group. Documented interpreter use was an effect modifier on the relationship between language preference and cesarean (OR with interpreter use: 2.89, 95% CI: 1.90, 4.39). Primary cesarean delivery rates were significantly higher among nulliparous women who prefer languages other than English. This difference may reflect lack of communication, provider bias or discrimination, or other factors, and should be further studied. Interpreter services should be routinely utilized and documented effectively. · Women who prefer languages other than English had higher odds of cesarean.. · Indication for cesarean did not differ by language.. · Interpreter use did not reduce risk for cesarean..

A comparison of the rates of and indications for cesarean delivery between Syrian refugee women and Turkish women.

The aim of this study was to compare the rates of and indications for cesarean delivery among Syrian refugee women and local Turkish women. The study included 74,864 pregnant women, of whom 52,145 were Turkish and 22,719 were Syrian refugee women and who gave birth at our hospital between January 2013 and December 2021. In this study, the pregnant women were divided into two groups: Syrian refugee women and Turkish women, and primary cesarean delivery rates were calculated separately for each group. Cesarean delivery rates for Syrian refugee women and Turkish women were compared separately for each year. Indications for cesarean delivery were determined separately for each group and compared between the groups. The overall cesarean delivery rate was 56% among Turkish women and 32% among Syrian women (p<0.05). The primary cesarean delivery rate was 18.4% for local Turkish women versus 10.7% among Syrian refugee women (p<0.05). The most common indication for cesarean delivery among both Syrian refugee women and local Turkish women was previous cesarean delivery, followed by acute fetal distress and cephalopelvic disproportion. Indications for cesarean delivery were similar for Syrian refugee women and local Turkish women, but both overall and primary cesarean delivery rates were higher among local Turkish women compared with Syrian refugee women.

Increased primary cesarean delivery rate among people with epilepsy: Risks, drivers and future directions

People with epilepsy are at increased risk of hemorrhage-related severe maternal morbidity (SMM) events, but little is known about the prevalence and drivers of cesarean births – a major contributor to hemorrhage – in this population. We therefore examined if cesarean birth differed among people with versus without epilepsy, and whether any differences were explained by patient or hospital level factors. This cohort study used linked birth certificate and hospital discharge data from nulliparous, term, singleton, vertex (NTSV) livebirths in California from 2007-2018 to compare the prevalence of cesarean birth among people with versus without epilepsy. Epilepsy was defined using diagnosis codes and categorized into generalized, focal, and other less specified subtypes. Poisson regression models with robust standard errors were conducted adjusting for potential confounders; sociodemographic factors, clinical factors, and hospital characteristics, to examine the rate of cesarean birth. Subgroup analyses were conducted replicating these models among each epilepsy subtype. Of 1,550,586 NTSV births in California from 2007-2018, 5,027 (0.3%) were among people with epilepsy. People with epilepsy had higher rates of hypertensive disorders of pregnancy and pre-existing diabetes (P < 0.001, Table 1). People with epilepsy versus those without had higher risk of cesarean birth (32.1% vs 26.6%, risk ratio [RR] 1.21 [95% CI 1.16-1.25], Table 2). Despite adjusting for sociodemographic, clinical and hospital factors, the significant increase in cesarean birth among people with epilepsy persisted (aRR 1.18 [95% CI 1.13-1.23]). When stratified into subgroups, the increased risk of cesarean birth was most pronounced for less specified epilepsies (aOR1.18 [95% CI 1.13 – 1.23]). Despite adjustment for sociodemographic, clinical, and hospital factors, primary cesarean births were significantly increased in people with epilepsy. Given the known hemorrhage-related SMM risks in people with epilepsy, targeting the primary cesarean birth rate may aid in risk reduction in this population.View Large Image Figure ViewerDownload Hi-res image Download (PPT)

Racial and Ethnic Disparities in Primary Cesarean Birth and Adverse Outcomes Among Low-Risk Nulliparous People.

To compare trend of primary cesarean delivery rate and composite neonatal and maternal adverse outcomes in low-risk pregnancies among racial and ethnic groups: non-Hispanic White, non-Hispanic Black, and Hispanic. This population-based cohort study used U.S. vital statistics data (2015-2019) to evaluate low-risk, nulliparous patients with nonanomalous singletons who labored and delivered at 37-41 weeks of gestation. The primary outcome was the primary cesarean delivery rate. Secondary outcomes included composite neonatal adverse outcome (Apgar score less than 5 at 5 minutes, assisted ventilation for more than 6 hours, seizure, or death), and composite maternal adverse outcome (intensive care unit admission, blood transfusion, uterine rupture, or unplanned hysterectomy), as well as infant death. Multivariable Poisson regression models were used to estimate adjusted relative risks (aRR) and 95% CIs. Among 4.3 million births, 60.6% identified as non-Hispanic White, 14.6% identified as non-Hispanic Black, and 24.8% identified as Hispanic. The rate of primary cesarean delivery was 18.5% (n=804,155). An increased risk for cesarean delivery was found in non-Hispanic Black (21.7%, aRR 1.24, 95% CI 1.23-1.25) and Hispanic (17.3%, aRR 1.09, 95% CI 1.09-1.10) individuals, compared with non-Hispanic White individuals (18.1%) after multivariable adjustment. There was an upward trend in the rate of primary cesarean delivery in all racial and ethnic groups ( P for linear trend&lt;0.001 for all groups). However, the racial and ethnic disparity in the rate of primary cesarean delivery remained stable during the study period. The composite neonatal adverse outcome was lower in Hispanic individuals in all newborns (10.7 vs 8.3 per 1,000 live births, aRR 0.74, 95% CI 0.72-0.75), and in newborns delivered by primary cesarean delivery (18.5 vs 15.0 per 1,000 live births, aRR 0.73, 95% CI 0.70-0.76), compared with non-Hispanic White individuals. Using a nationally representative sample in the United States, we found racial and ethnic disparities in the primary cesarean delivery rate in low-risk nulliparous patients, which persisted throughout the study period.

Association of Primary Cesarean Delivery Rate With Dissemination of Nurse-Specific Cesarean Delivery Rates.

Strategies to safely reduce the rate of nulliparous, term, singleton, vertex (NTSV) cesarean deliveries have thus far largely ignored the contribution that labor and delivery nurses make to the delivery mode. We used a recently developed method to calculate nurse-specific cesarean delivery rates and provide these to labor and delivery nursing leadership, who shared the rates with labor and delivery nurses beginning in September 2020. We performed a 3-year interrupted time series analysis comparing our NTSV cesarean delivery rates before and after nurse-specific rates were released. On release of nurse-specific rates, our labor and delivery unit's NTSV cesarean delivery rate declined from 25.7% to 22.0%. Further work to find strategies to sustain nurse engagement is warranted.

Impact of WHO Labor Care Guide on reducing cesarean sections at a tertiary center: an open-label randomized controlled trial

BACKGROUNDThe World Health Organization Labor Care Guide was introduced in December 2020 to implement World Health Organization (WHO) guidelines on intrapartum care for a positive childbirth experience.OBJECTIVEThis study aimed to determine the effect of the WHO Labor Care Guide on labor outcomes, especially in reducing primary cesarean deliveries, and its acceptability by healthcare providers.STUDY DESIGNThis open-label randomized control trial was conducted from September 2021 to December 2021 on 280 low-risk antenatal women admitted for delivery at a busy tertiary care institute in North India. After informed consent, women were allocated into the study and control groups. Labor monitoring was performed using the WHO Labor Care Guide in the study group and the World Health Organization–modified partograph in the control group. Women who had a cesarean delivery in the latent phase of labor were excluded from the study. The primary outcome was mode of delivery, whereas the secondary outcomes were duration of active labor, maternal complications (postpartum hemorrhage and puerperal sepsis), duration of hospital stay, Apgar score at 5 minutes, and neonatal intensive care unit admission. The labor outcomes in both groups were compared. In the study group, the acceptability, difficulty, and satisfaction levels of the users were assessed using a 5-point Likert scale. The “learning curve” for the use of the Labor Care Guide (LCG) was determined. SPSS software (version 21.0; IBM Corporation, Chicago, IL) was used for statistical analysis.RESULTSAfter excluding women who underwent cesarean delivery in the latent phase, 136 women in the study group and 135 women in the control group were observed for labor outcomes. The cesarean delivery rate was 1.5% in the study group vs 17.8% in the control group (P=.0001). The duration of the active phase of labor was significantly shorter in the study group than in the control group (P<.001). The 2 groups were similar in terms of maternal complications, duration of hospital stay, and Apgar score. The learning curve took average levels of 6.50 and 2.25 Labor Care Guide plots to shift from “very difficult” to “neutral” and “neutral” to “easy,” respectively. After an initial learning curve, acceptability and satisfaction levels were found to be high in the WHO Labor Care Guide users.CONCLUSIONThe WHO Labor Care Guide is a simple labor monitoring tool for the reducing primary cesarean delivery rate without increasing the duration of hospital stay and fetomaternal complications.

Factors Associated with the Chance of Carrying out a Primary Cesarean in a University Hospital.

The present study seeks to identify the associated factors that increased primary cesarean delivery rates. This was a cross-sectional study that evaluated the number of primary cesarean sections performed in the years 2006 and 2018 at the Hospital de Clínicas de Porto Alegre (HCPA, in the Portuguese acronym), through the collection of data from the medical records of the patients. Advanced maternal age, twin pregnancy, and higher body mass index (BMI) became more frequent in 2018 in comparison with 2006. To mitigate the impact of confounding in comparisons among groups, we made an adjustment by propensity scores and detected significant differences when comparing both age groups on twin pregnancy rates, gestational diabetes mellitus, and thyroid disease. Data from the present study can be used to prevent and improve the management of morbidities, impacting on better outcomes in obstetrical practice.

The Effect of Changes in Treatment Recommendations for Gestational Diabetes on Perinatal Morbidity [A191

INTRODUCTION: Evidence about the lack of efficacy of glyburide prompted the American College of Obstetricians and Gynecologists (ACOG) to recommend insulin as first-line treatment and metformin as an alternative for treatment of gestational diabetes (GDMA2) in February 2018. This study compared the treatments and perinatal outcomes in women before and after the ACOG recommendations. METHODS: This was a retrospective study of patients treated for GDMA2. Patients were divided into two groups (group 1: February 2016 to January 2018; group 2: February 2018 to January 2020). The primary outcome was comparison of perinatal outcomes between the groups during those two periods. The secondary outcome was comparison of the effect of glyburide, metformin, and insulin on perinatal outcomes regardless of the time frame. Outcomes were also compared between insulin glargine and insulin NPH. Maternal outcomes included rates of primary cesarean delivery, preeclampsia, and ICU admission. Neonatal outcomes included large for gestational age, shoulder dystocia, NICU admission, hypoglycemia, hyperbilirubinemia, and stillbirth. Institutional review board approval was obtained. RESULTS: A total of 160 patients received medications. Baseline characteristics were similar. Insulin was the most common medication used in both groups (58%). In group 1, 21 patients received glyburide versus seven in group 2 (P=.01). There was no difference regarding insulin or metformin use between groups (P&gt;.05). Perinatal outcomes were similar in both groups (P&gt;.05). Regardless of time frame, NICU admissions (P=.01) and shoulder dystocia (P=.04) were higher with glyburide. Preeclampsia rates were lower in women receiving insulin NPH (P=.03). CONCLUSION: Glyburide use decreased after ACOG recommendations. Decline in use of glyburide is not accompanied by significant improvements in perinatal morbidity. Regardless of time frame, glyburide is associated with higher neonatal adverse outcomes and NPH with decrease in maternal adverse outcomes.

Pre-Pregnancy Physical Fitness, Body Mass Index and Gestational Weight Gain as Risk Factors for Cesarean Delivery: A Study of Active Duty Women.

The World Health Organization considers the optimal rate of delivery by Cesarean among healthy nulliparous women to be <15%. In 2020, the rate of primary Cesarean delivery (CD) in the US among nulliparous women with singleton, vertex pregnancies was 26%. An enhanced understanding of factors associated with women undergoing CD may assist in reducing this rate. One potential factor is the level of physical fitness in women before pregnancy. Active duty (AD) soldiers provide a cohort of women who begin pregnancy while actively pursuing physical fitness. The research team sought to assess the effects of pre-pregnancy physical fitness of AD soldiers as measured by the Army Physical Fitness Test (APFT) on the incidence of CD in AD women, in addition to examining known demographic and pregnancy risk factors in this cohort. We conducted a retrospective study of healthy AD nulliparous women who delivered their singleton pregnancy of >32 weeks at a tertiary medical center between 2011 and 2016. Soldiers undergoing non-labored CD were excluded. Demographics, pre-pregnancy APFT results, antepartum and labor and delivery data were collected from the Digital Training Management System, the outpatient, and inpatient medical records respectively. Weight gain in pregnancy was assessed using the Institute of Medicine Guidelines for pregnancy. Fisher's exact tests and chi-squared tests assessed associations between categorical outcomes, and unpaired t-tests assessed differences in APFT scores between women who underwent CD vs. vaginal delivery. Multivariable logistic regression analysis was used to assess for independent risk factors among all collected variables. The protocol was approved by the Regional Health Command-Pacific Institutional Review Board. Five-hundred-and-twenty-three women delivering singleton pregnancies between 2011 and 2016 were reviewed for this study. Three-hundred ninety women met inclusion criteria: 316 in the vaginal delivery cohort, and 74 in the CD cohort, with a CD rate of 19%. Twenty non-labored CDs were excluded. Neither total APFT performance nor performance on the individual push-up, sit-up or run events in the 15 months prior to pregnancy was associated with mode of delivery. Excessive gestational weight gain (EWG) and neonatal birth weight were the only two factors independently associated with an increased rate of cesarean delivery. Women who had excessive gestational weight gain, were twice as likely to undergo CD as those who had adequate or insufficient weight gain (24% vs. 12%, p = 0.004). Soldiers delivering a neonate ≥4,000 g were 2.8 times as likely to undergo CD as those delivering a neonate <4,000 g (47% vs. 17%, p < 0.001). Age, race, and rank, a surrogate marker for socioeconomic status, were not associated with mode of delivery. Pre-pregnancy fitness levels as measured by the APFT among healthy physically active nulliparous AD women showed no association with the incidence of labored CD. EWG is one modifiable factor which potentially increases the risk for CD in this cohort and has been documented as a risk factor in a recent metanalysis (RR-1.3). Counseling on appropriate weight gain in pregnancy may be the most effective way to reduce the rate of CD among this population of healthy and physically active women.

Adherence to Definitions of Labor Arrest Influence on Primary Cesarean Delivery Rate.

The cesarean delivery rate in the United States is 31.9%. One of the leading indications for primary cesarean delivery is labor arrest. A modern understanding of the labor curve supports more time prior to the diagnosis of labor arrest. We conducted this study to examine the impact of adherence to the modern criteria for labor arrest and failed induction on rates of primary cesarean delivery and to identify predictors of meeting these criteria. We analyzed rates of primary cesarean deliveries overall and primary cesarean deliveries occurring due to arrest of dilation, arrest of descent, and failed induction among the 17,877 live births at a large academic center from 2010 through 2013. Multiple logistic regression modeling identified predictors of meeting the new criteria for these indications based on guidelines published by the 2012 National Institute of Child Health and Human Development. The primary cesarean delivery rate decreased from 23.5 to 21.1% (p = 0.026) from 2010 to 2013. Primary cesarean delivery rate for labor arrest and failed induction decreased from 8.5 to 6.7% (p = 0.005). The percentage of primary cesarean deliveries meeting the 2012 criteria for labor arrest increased from 18.8 to 34.9% (p = 0.002), and the rate of primary cesarean deliveries due to arrest of dilation decreased from 5.1 to 3.4% (p < 0.0005). The percentage of cases meeting the 2012 criteria for arrest of descent increased from 57.8 to 71.0% (p < 0.007), while primary cesarean delivery rate due to arrest of descent remained relatively unchanged, 3.1 to 2.6% (p = 0.330). A decrease in the primary cesarean rate was attributable to a decrease in cesarean for arrest of dilation in the setting of a significant increase in meeting the 2012 criteria for arrest of dilation. At the end of the study period, 65.2% of cesareans still did not meet the criteria for arrest of dilation. Greater rates of adherence to these guidelines may yield further reductions in the cesarean rate. · Primary cesarean delivery for labor arrest was decreased.. · Meeting criteria for labor arrest increased.. · A hospitalist provider increased odds of meeting criteria..

Trends in racial and ethnic disparity for the risk of primary cesarean delivery

The primary cesarean delivery rate has significantly increased over time leading to important impacts on maternal morbidity and mortality. Racial disparities in obstetric care have been well well-established, and may impact primary cesarean delivery rates. The aim of this study is to describe trends in rates and indications for primary cesarean delivery by race and ethnicity.