Association Between Mode of First Delivery and Subsequent Fecundity and Fertility.

Importance: More than 20% of births globally are by cesarean delivery, including more than 30% in the US. Prior studies have reported lower rates of childbearing after cesarean delivery, but it is not clear if this is due to maternal choice or lower conception rates. Objective: To investigate the association between mode of first delivery and subsequent conceptions and live births. Design, Setting, and Participants: The First Baby Study was a multicenter prospective cohort study of women aged 18 to 35 years with singleton pregnancies, enrolled and interviewed before first childbirth, who delivered in Pennsylvania from 2009 to 2011 and were followed up for 36 months after delivery (until April 2014). Data analysis for this study took place between May and July 2019 and in January 2020. Exposures: Mode of first delivery (cesarean or vaginal). Main Outcomes and Measures: Rates of subsequent conceptions and live births. Discrete-time Cox proportional hazard regression models were used to compare the rate of subsequent conception (vaginal vs cesarean) among those who completed the 36-month survey, accounting for reported months of unprotected intercourse during the follow-up period and adjusting for relevant covariates. A log binomial regression was used to compare the age-adjusted rate of subsequent live birth (vaginal vs cesarean) among those who completed the 36-month survey. Results: The study population consisted of 2423 women who were retained to the 36-month survey (mean [SD] age at baseline was 27.2 [4.4] years and 712 [29.4%] delivered by cesarean). There were 2046 women who had unprotected intercourse during the follow-up period, 2021 of whom provided data on months of unprotected intercourse. Cesarean delivery was associated with lower rates of conception after unprotected intercourse during the follow-up period (413 of 599 [68.9%]) compared with vaginal delivery (1090 of 1422 [76.7%]) (adjusted hazard ratio, 0.85; 95% CI, 0.74-0.96). Cesarean delivery was also associated with reduced likelihood of a subsequent live birth (305 women [42.8%]) compared with vaginal delivery (857 women [50.1%]), with an age-adjusted risk ratio of 0.83 (95% CI, 0.75-0.92). Conclusions and Relevance: In the 3 years following first childbirth, women who delivered their first child by cesarean had lower rates of conception after unprotected intercourse, and fewer of these women had a second child than those who delivered vaginally.

Early maternal-newborn contact and positive birth experience.

BACKGROUND: In recent years, there has been increasing recognition of the importance of early maternal-newborn contact for the health and well-being of the newborn and promotion of breastfeeding. However, little research has investigated the association between early maternal-newborn contact and the mother's birth experience. METHODS: As part of a large-scale prospective, cohort study (the First Baby Study [FBS]), nearly 3000 women who delivered in Pennsylvania (2009-2011) reported how soon after delivery they first saw, held, and fed their newborns. Birth experience was measured via telephone interview 1 month postpartum, using the FBS Birth Experience Scale, a 16-item scale which addresses women's feelings about the delivery. General linear models were used to measure associations between time to first maternal-newborn contact and birth experience, controlling for relevant confounders, including maternal age, race/ethnicity, insurance coverage, delivery mode, gestational age, and pregnancy and delivery complications. RESULTS: The sooner that new mothers first saw, held, and fed their newborns after delivery the more positive their childbirth experiences (all P-values < 0.001). Women who delivered by cesarean were less likely to see, hold and feed their newborns shortly after delivery than those who delivered vaginally (all P-values < 0.001), and reported less positive birth experiences (P < 0.001). However, if they first saw, held, and fed their newborns shortly after delivery, they reported more positive birth experiences than those who delivered vaginally (P = 0.010). DISCUSSION: Early maternal-newborn contact after delivery was associated with positive birth experiences for new mothers, particularly those who delivered by cesarean.

Mode of Delivery Preference Among Pregnant Nulliparous Women.

Background: Nearly a third of women in the United States deliver by cesarean at first childbirth. The extent to which women's prenatal mode of delivery preference contributes to the cesarean decision is not clear. Little research has measured pregnant nulliparous women's prelabor mode of delivery preference in relation to actual mode of delivery in the United States. Materials and Methods: A total of 3006 pregnant nulliparous women were asked about mode of delivery preference during pregnancy as part of the First Baby Study, a prospective study of women delivering in Pennsylvania hospitals, 2009-2011. Multivariable regression models were used to assess the association between women's preference for cesarean delivery and two decision stages: (1) the decision to have planned prelabor cesarean and (2) the intrapartum decision to have unplanned cesarean among those attempting vaginal delivery, adjusting for confounders. Results: Overall, 3.1% preferred cesarean delivery, 3.0% had no preference, and 93.9% preferred vaginal. Among those who preferred vaginal delivery, 4% had a planned cesarean; among those with no preference, 13.3% did; and among those who preferred cesarean, 33.7% did. In adjusted models, preference for cesarean was strongly associated with having planned prelabor cesarean (adjusted odds ratio [aOR] = 6.02; 95% confidence interval [CI] = 3.26-11.12), but was not significantly associated with unplanned cesarean among those who attempted vaginal delivery (aOR = 1.35; 95% CI = 0.77-2.38). Conclusions: Although preference for cesarean delivery among nulliparous women was uncommon, women who preferred cesarean were more likely to have planned prelabor cesarean delivery than those who preferred vaginal delivery.

Dextrose intravenous fluid therapy in labor reduces the length of the first stage of labor.

The aim of this systematic review with meta-analysis was to evaluate the effect on length of labor when patients receive IVF with or without dextrose. Searches were performed in electronic databases from inception of each database to May 2018. Trials comparing intrapartum IVF containing dextrose (i.e. intervention group) with no dextrose or placebo (i.e. control group) were included. Only trials examining low-risk pregnancies in labor at ≥36 weeks were included. Studies were included regardless of oral intake restriction. The primary outcome was the length of total labor from randomization to delivery. The meta-analysis was performed using the random effects model. Sixteen trials (n = 2503 participants) were included in the meta-analysis. Women randomized in the IVF dextrose group did not have a statistically significant different length of total labor from randomization to delivery compared to IVF without dextrose (MD -38.33 min, 95% CI -88.23 to 11.57). IVF with dextrose decreased the length of the first stage (MD -75.81 min, 95% CI -120.67 to -30.95), but there was no change in the second stage. In summary, use of IVF with dextrose during labor in low-risk women at term does not affect total length of labor, but it does shorten the first stage of labor.

Comparison of healthcare utilization and outcomes by gestational diabetes diagnostic criteria.

OBJECTIVE: To compare healthcare utilization and outcomes using the Carpenter-Coustan (CC) criteria vs. the National Diabetes Data Group (NDDG) criteria for gestational diabetes mellitus (GDM). METHODS: This is a retrospective cohort study. Prior to 8/21/2013, patients were classified as "GDM by CC" if they met criteria. After 8/21/2013, patients were classified as "GDM by NDDG" if they met criteria and "Meeting CC non-GDM" if they met CC, but failed to reach NDDG criteria. "Non-GDM" women did not meet any criteria for GDM. Records were reviewed after delivery. RESULTS: There was a 41% reduction in GDM diagnosed using NDDG compared to CC (P=0.01). There was no significant difference in triage visits, ultrasounds for growth or hospital admissions. Women classified as "Meeting CC non-GDM" were more likely to have preeclampsia than "GDM by CC" women [OR 11.11 (2.7, 50.0), P=0.0006]. Newborns of mothers "Meeting CC non-GDM" were more likely to be admitted to neonatal intensive care units than "GDM by CC" [OR 6.25 (1.7, 33.3), P=0.006], "GDM by NDDG" [OR 5.56 (1.3, 33.3), P=0.018] and "Non-GDM" newborns [OR 6.47 (2.6, 14.8), P=0.0003]. CONCLUSION: Using the NDDG criteria may increase healthcare costs because while it decreases the number of patients being diagnosed with GDM, it may also increase maternal and neonatal complications without changing maternal healthcare utilization.

Labor induction and cesarean delivery: A prospective cohort study of first births in Pennsylvania, USA.

BACKGROUND: Mode of delivery at first childbirth largely determines mode of delivery at subsequent births, so it is particularly important to understand risk factors for cesarean delivery at first childbirth. In this study, we investigated risk factors for cesarean delivery among nulliparous women, with focus on the association between labor induction and cesarean delivery. METHODS: A prospective cohort study of 2851 nulliparous women with singleton pregnancies who attempted vaginal delivery at hospitals in Pennsylvania, 2009-2011, was conducted. We used nested logistic regression models and multiple mediational analyses to investigate the role of three groups of variables in explaining the association between labor induction and unplanned cesarean delivery-the confounders of maternal characteristics and indications for induction, and the mediating (intrapartum) factors-including cervical dilatation, labor augmentation, epidural analgesia, dysfunctional labor, dystocia, fetal intolerance of labor, and maternal request of cesarean during labor. RESULTS: More than a third of the women were induced (34.3%) and 24.8% underwent cesarean delivery. Induced women were more likely to deliver by cesarean (35.9%) than women in spontaneous labor (18.9%), unadjusted OR 2.35 (95% CI 1.97-2.79). The intrapartum factors significantly mediated the association between labor induction and cesarean delivery (explaining 76.7% of this association), particularly cervical dilatation <3 cm at hospital admission, fetal intolerance of labor, and dystocia. The indications for labor induction only explained 6.2%. CONCLUSIONS: Increased risk of cesarean delivery after labor induction among nulliparous women is attributable mainly to lower cervical dilatation at hospital admission and higher rates of labor complications.

Pitfalls With the New American College of Obstetricians and Gynecologists Task Force on Hypertension in Pregnancy.

The American College of Obstetricians and Gynecologists Task Force on Hypertension in Pregnancy was created to evaluate the existing literature, develop practice guidelines, and identify areas for future research focus. Several issues were identified that may not have been initially obvious during the process of developing this document, including limited practical use, a lack of high quality literature, conflicting recommendations, a potential for high resource utilization, need for continually updated information, and little headway in research that is clinically useful. The purpose of this review was to make suggestions to improving these guidelines' overall usefulness and consistency for the busy clinician.

Parent reported outcomes of quality care and satisfaction in the context of a life-limiting fetal diagnosis.

OBJECTIVE: To identify which quality indicators (QI) predict patient satisfaction. METHODS: A cross-sectional design using a validated tool was administered using a Web-based platform. Parents (n = 405) who experienced a life-limiting fetal diagnosis and opted to continue their pregnancy provided feedback on 37 QI and satisfaction with prenatal care. Descriptive analyses and logistic regression identified relationships among variables. RESULTS: Parental satisfaction with care was 75.6%. Statistically significant differences in mean scores were reported with satisfied patients reporting higher agreement with quality indicators. Parents who were satisfied with their care had 1.9 times the odds of reporting that consistent care was provided (CI: 1.4-2.4, p < 0.01), 1.8 times the odds of reporting compassionate care (CI: 1.4-2.5, p < 0.01) and 1.8 times the odds that they received help to cope with their emotions (CI: 1.4-2.3, p < 0.01). The model correctly predicted parent satisfaction 92% of the time. CONCLUSION: Provision of consistent prenatal care is an important quality indicator for this population of parents. The odds of securing satisfied parents increase when families are treated with compassion and given resources to help them cope with the emotionally devastating experiences associated with a life-limiting fetal diagnosis.

Risk Factors for Dyspareunia After First Childbirth.

OBJECTIVE: To investigate risk factors for dyspareunia among primiparous women. METHODS: This was a planned secondary analysis using data from the 1- and 6-month postpartum interviews of a prospective study of women who delivered their first neonate in Pennsylvania, 2009-2011. Participants who had resumed sexual intercourse by the 6-month interview (N=2,748) constituted the analytic sample. Women reporting a big or medium problem with painful intercourse at 6 months were categorized as having dyspareunia. Multivariable logistic regression was used to evaluate the effect of patient characteristics, obstetric and psychosocial factors, and breastfeeding on dyspareunia. RESULTS: There were 583 women (21.2%) who reported dyspareunia at 6 months postpartum. Nearly one third of those breastfeeding at 6 months reported dyspareunia (31.5%) compared with 12.7% of those not breastfeeding (adjusted odds ratio [OR] 2.89, 95% confidence interval [CI] 2.33-3.59, P<.001); 32.5% of those reporting a big or medium problem with perineal pain at 1 month reported dyspareunia at 6 months compared with 15.9% of those who did not (adjusted OR 2.45, 95% CI 1.93-3.10, P<.001); 28.3% of women who reported fatigue all or most of the time at 1 month reported dyspareunia at 6 months compared with 18.0% of those who reported fatigue less often (adjusted OR 1.60, 95% CI 1.30-1.98, P<.001); and 24.1% of those who scored in the upper third on the stress scale at 1 month reported dyspareunia at 6 months postpartum compared with 15.6% of those who scored in the lowest third (adjusted OR 1.55, 95% CI 1.18-2.02, P=.001). CONCLUSION: In this prospective cohort study, we identified specific risk factors for dyspareunia in primiparous women that can be discussed at the first postpartum visit, including breastfeeding, perineal pain, fatigue, and stress.

Reduction in the Cesarean Delivery Rate After Obstetric Care Consensus Guideline Implementation.

OBJECTIVE: To evaluate the rate of primary cesarean delivery after adopting labor management guidelines. METHODS: This is a before-after retrospective cohort study at a single academic center. This center adopted guidelines from the Consensus for the Prevention of the Primary Cesarean Delivery. Nulliparous women attempting vaginal delivery with viable, singleton, vertex fetuses were included. For the primary outcome of cesarean delivery rate among induced or augmented patients, 200 consecutive women managed before guideline adoption were compared with 200 similar patients afterward. Secondary outcomes of overall cesarean delivery rate, maternal morbidity, neonatal outcomes, and labor management practices were analyzed with inclusion of intervening spontaneously laboring women. RESULTS: Between September 13, 2013, and September 28, 2014, 275 women preguideline and 292 postguideline were identified to include 200 deliveries after induction or augmentation each. Among women delivering after induction or augmentation, the cesarean delivery rate decreased from 35.5% to 24.5% (odds ratio [OR] 0.59, 95% confidence interval [CI] 0.38-0.91). The overall cesarean delivery rate decreased from 26.9% to 18.8% (adjusted OR 0.59, CI 0.38-0.92). Composite maternal morbidity was reduced (adjusted OR 0.66, CI 0.46-0.94). The frequency of cesarean delivery documenting arrest of dilation at less than 6 cm decreased from 7.1% to 1.1% postguideline (n=182 and 176 preguideline and postguideline, respectively, P=.006) with no change in other indications. CONCLUSION: Postguideline, the cesarean delivery rate among nulliparous women attempting vaginal delivery was substantially reduced in association with decreased frequency in the diagnosis of arrest of dilation at less than 6 cm.

Identification of small for gestational age by population-based and customized growth charts in newborns of obese and normal-weight primiparous women.

OBJECTIVE: Our hypothesis was that newborns of obese mothers would be more likely to be classified as small for gestational age (SGA) by their customized growth curves than by the standard growth curves when compared to newborns of normal-weight mothers. METHODS: This is a retrospective cohort of primiparous patients delivering between 1 July 2008 and 30 June 2012. Normal-weight was defined as BMI ≤25 kg/m(2) and obese as BMI ≥ 30 kg/m(2). Infant birth-weight was characterized as SGA or non-SGA from the Lubchenco curve, the Fenton Preterm Growth Chart, and the customized growth curve. RESULTS: Infants were more likely to be classified as SGA on the customized curve compared with Lubchenco curve. Odds ratio was 2.8 (CI: 1.7-4.4; p = 0.001) for obese women and was 2.9 (CI: 1.7-5.1; p < 0.001) for normal-weight women. Infants were also more likely to be classified as SGA based on the customized curve compared with the Fenton Preterm Growth Curve. The odds ratio was 2.3 (CI: 1.4-3.8; p = 0.001) for obese women and was 1.5 (CI: 1.01-2.33; p = 0.04) for normal-weight women. CONCLUSIONS: Population-based curves may mask SGA in obese women. Our study demonstrates that customized growth curves identify more SGA than population-based growth curves in obese and normal-weight women.

A multi-center randomized trial of two different intravenous fluids during labor.

OBJECTIVE: To determine if the intrapartum use of a 5% glucose-containing intravenous solution decreases the chance of a cesarean delivery for women presenting in active labor. METHODS: This was a multi-center, prospective, single (patient) blind, randomized study design implemented at four obstetric residency programs in Pennsylvania. Singleton, term, consenting women presenting in active spontaneous labor with a cervical dilation of <6 cm were randomized to lactated Ringer's with or without 5% glucose (LR versus D5LR) as their maintenance intravenous fluid. The primary outcome was the cesarean birth rate. Secondary outcomes included labor characteristics, as well as maternal or neonatal complications. RESULTS: There were 309 women analyzed. Demographic variables and admitting cervical dilation were similar among study groups. There was no significant difference in the cesarean delivery rate for the D5LR group (23/153 or 15.0%) versus the LR arm (18/156 or 11.5%), [RR (95% CI) of 1.32 (0.75, 2.35), p = 0.34]. There were no differences in augmentation rates or intrapartum complications. CONCLUSIONS: The use of intravenous fluid containing 5% dextrose does not lower the chance of cesarean delivery for women admitted in active labor.

Preeclampsia: Short-term and Long-term Implications.

Preeclampsia is a hypertensive disorder that affects 4% of pregnancies and has a high risk of maternal, fetal, and neonatal morbidity and mortality, as well as long-term cardiovascular risk. Recent updates in the definition, diagnosis, and management guidelines for preeclampsia warrant review by general obstetrician-gynecologists. Screening and prevention algorithms for preeclampsia are available, but ultimately the cure remains delivery of the fetus and placenta. Close monitoring for the development and worsening of preeclampsia during pregnancy is essential to optimize both maternal and fetal/neonatal outcomes.

What is new in labor management? Best articles from the past year.

This month we focus on current research in labor management. Dr. Repke discusses five recent publications, and each is concluded with a "bottom line" that is the take-home message. The complete reference for each can be found in on this page, along with direct links to the abstracts.

What is new in preeclampsia?: best articles from the past year.

This month, the focus is on preeclampsia and specifically emphasizes three areas: prediction, clinical management, and long-term sequelae. The current reviews serve to highlight the increasing importance of this disease across the health care continuum. The complete reference for each article reviewed can be found in on this page, along with direct links to the abstracts.

Management of gestational hypertension - the impact of HYPITATa.

AIMS: The objective of this study was to examine the impact of one trial (the HYPITAT trial) on management of gestational hypertension. STUDY DESIGN: This is a retrospective cohort study of 5077 patients delivered at our institution from 7/1/2008 to 6/15/2011. "Pre-HYPITAT" was defined as 7/1/2008-9/30/2009 and "Post-HYPITAT" as 10/1/2009-6/15/2011. The primary outcome is the rate of delivery intervention for gestational hypertension. Secondary maternal and neonatal outcomes were analyzed in patients with gestational hypertension only. Statistical analyses included the χ2-test, Fisher's exact test, and the two-sample t-test. RESULTS: The rate of delivery intervention Pre-HYPITAT was 1.9%, compared to 4% Post-HYPITAT (P<0.001). There was no significant change in secondary outcomes. CONCLUSION: There was a statistically significant increase in delivery intervention for gestational hypertension at our institution after the publication of the HYPITAT trial. There was no significant change in immediate maternal or neonatal outcomes for patients with gestational hypertension.

Mode of first delivery and women's intentions for subsequent childbearing: findings from the First Baby Study.

BACKGROUND: More than a dozen studies have reported a reduced rate of childbearing after caesarean delivery (CD). It has been hypothesised that this is because women who deliver by CD are less likely to intend to have subsequent children than women who deliver vaginally - either before childbirth or as a consequence of CD. Little research has addressed either of these hypotheses. METHODS: As part of an ongoing prospective study, we interviewed 3006 women in their third trimester and 1 month after first childbirth to assess subsequent childbearing intentions. RESULTS: Women who delivered by CD were similar to those who delivered vaginally in intent to have at least one additional child, both before childbirth (90.1% vaginal, 89.9% CD; P = 0.97) and after (87.8% vaginal, 87.1% CD; P = 0.87); however, women who had CD were less likely to intend two or more additional children, both before childbirth (34.7% vaginal, 29.2% CD; P = 0.03) and after (32.2% vaginal, 26.1% CD; P = 0.01). Among women who intended to have at least one additional child before childbirth, 5.0% reported intending to have no additional children 1 month after delivery (5.1% vaginal, 4.6% CD; P = 0.52). CONCLUSIONS: Women whose first delivery is by CD are less likely to intend a relatively large family of three or more children than those who deliver vaginally, but delivery by CD does not decrease women's intentions to have at least one more child any more than does vaginal delivery, at least in the short term.

Health knowledge among the millennial generation.

ABSTRACT: The Millennial Generation, also known as Generation Y, is the demographic cohort following Generation X, and is generally regarded to be composed of those individuals born between 1980 and 2000. They are the first to grow up in an environment where health-related information is widely available by internet, TV and other electronic media, yet we know very little about the scope of their health knowledge. This study was undertaken to quantify two domains of clinically relevant health knowledge: factual content and ability to solve health related questions (application) in nine clinically related medical areas. Study subjects correctly answered, on average, 75% of health application questions but only 54% of health content questions. Since students were better able to correctly answer questions dealing with applications compared to those on factual content contemporary US high school students may not use traditional hierarchical learning models in acquisition of their health knowledge.