Routine Screening for Sepsis in an Obstetric Population: Evaluation of an Improvement Project.

INTRODUCTION: Our objectives were to calculate the timeliness of treatment following implementation of routine sepsis screening in an inpatient obstetric population using obstetric-adjusted systemic inflammatory response syndrome (SIRS) criteria, evaluate the performance of obstetric-specific screening criteria in the identification of sepsis, and to better characterize the frequency of end-organ dysfunction associated with those who met the definition of sepsis. METHODS: Electronic medical record data were collected from all pregnant or newly delivered women admitted for observation, admission, or postpartum readmission in the hospital maternity unit from March 1 through December 31, 2017 (n = 5075). Combinations of SIRS criteria were collected and compared with clinical indicators of end-organ dysfunction in those who met the definition of sepsis. Maternal conditions and neonatal outcomes were evaluated. RESULTS: In the study period, 204 cases of sepsis were identified among 201 women, 2 of whom experienced multiple episodes of sepsis, resulting in an incidence of sepsis of 4.0 per 100 livebirths. There were 92 (45.2%) with sepsis and 112 (54.9%) with end-organ dysfunction. Two women were admitted to the intensive care unit and no women died from sepsis. DISCUSSION: Use of a standardized, obstetric-specific sepsis screening process provided for early identification and treatment of sepsis in this population. Fourteen unique combinations of SIRS criteria were noted among those with sepsis; no combination was uniquely associated with the severity of sepsis. CONCLUSION: Pregnant and newly delivered women benefitted from implementation of routine sepsis screening; this resulted in timely initiation of treatment.

Randomized, Double-Blinded Trial of Magnesium Sulfate Tocolysis versus Intravenous Normal Saline for Preterm Nonsevere Placental Abruption.

Objective To evaluate the efficacy and safety of magnesium sulfate in the resolution of vaginal bleeding and contractions in nonsevere placental abruption. Study Design Thirty women between 24 and 34 weeks of gestation diagnosed with nonsevere placental abruption were randomized to receive magnesium sulfate tocolysis or normal saline infusion. The primary outcome was the proportion of women undelivered at 48 hours with resolution of vaginal bleeding and uterine contractions. Maternal and neonatal outcomes were also compared. Results Fifteen (50%) women received magnesium sulfate tocolysis and 15 (50%) received intravenous saline. There was no difference in the number of women who were undelivered at 48 hours with resolution of vaginal bleeding and contractions in the magnesium sulfate (80.0%) and saline (66.7%; p-value = 0.68) groups. There were no differences between groups in the gestational age at randomization, time to uterine quiescence, time on study drug, length of hospitalization, days from randomization to delivery, incidence of side effects, or admissions to the neonatal intensive care unit. Conclusions Magnesium sulfate tocolysis did not provide a significant difference in pregnancy prolongation in the management of preterm nonsevere placental abruption. Recruitment goals were not met due to the introduction of the use of magnesium sulfate for neuroprotection.

Current knowledge of prenatal diagnosis of mosaic autosomal trisomy in amniocytes: karyotype/phenotype correlations.

Genetic counseling for prenatal diagnosis of autosomal trisomy is complex because of the uncertainty of outcome, which is important for management decisions. Compilation of cases of prenatally diagnosed autosomal trisomies in amniocytes has been done previously in an attempt to elucidate the clinical phenotype of these pregnancies. It has been greater than a decade since these studies were completed. To update this work, we reviewed cases reported in the literature since that time. These cases are correlated with the prior reports to increase knowledge about outcomes and to hopefully improve the data available for genetic counseling. The risk of abnormal outcome can be summarized as: very high risk (>60%) for 47,+2/46; 47,+9/46; 47,+16/46; 47,+20/46; and 47,+22/46; high risk (40-59%) for 47,+5/46; 47,+14/46; and 47,+15/46; moderately high risk (20-39%) for 47,+7/46 47,+12/46; and 47,+17/46; moderate risk (up to 19%) for 47,+6/46 and 47,+8/46, and none were low risk. 47,+6/46 was originally indeterminate, 47,+7/46 was originally moderate risk, 47,+9/46 was originally high risk, and 47,+17/46 was originally low risk.

Risk factors for classical hysterotomy in twin pregnancies.

OBJECTIVE: To describe the rate of classical hysterotomy in twin pregnancies across gestational age and examine risk factors that increase its occurrence. METHODS: This is a secondary analysis of the Cesarean Registry, a cohort study of women who underwent a cesarean delivery or a trial of labor after cesarean delivery at 19 academic centers between 1999 and 2002. Our study included all women with twin pregnancies and a recorded hysterotomy type who underwent cesarean delivery between 23 0/7 and 41 6/7 weeks of gestation. Primary exposures were gestational age at delivery and combined birth weight of twin A and twin B. Multivariate logistic regression was used to study factors thought to influence hysterotomy type including maternal age, body mass index (BMI) at delivery, obesity (BMI 30 or higher), nulliparity, labor, prior cesarean delivery, emergent delivery, and fetal presentation at delivery. RESULTS: Of 1,820 women meeting inclusion criteria, 125 (7%) underwent a classical hysterotomy. The risk of classical hysterotomy was greatest at 25 weeks of gestation (41%) and declined thereafter. The adjusted odds ratio (OR) for cesarean delivery declined as gestation age advanced (OR 0.87, 95% confidence interval 0.78-0.98). African American race and emergent delivery were associated risk factors for classical hysterotomy at 32 weeks of gestation or greater. CONCLUSION: Among women with twin pregnancies who deliver by cesarean, the incidence of classical hysterotomy is inversely related to gestational age but does not exceed 50% at any week; African American race and emergent delivery are associated risk factors at 32 weeks of gestation or greater. LEVEL OF EVIDENCE: II.

Body mass index and operative times at cesarean delivery.

OBJECTIVE: To examine the relationship between body mass index (BMI, kg/m) and incision-to-delivery interval and total operative time at cesarean delivery. METHODS: Women with singleton gestations undergoing uncomplicated primary and repeat cesarean deliveries were identified from the Maternal-Fetal Medicine Units Network Cesarean Registry. Women were classified by BMI category at time of delivery (normal 18.5-24.9, overweight 25.0-29.9, obese 30.0-39.9, and morbidly obese 40 or greater). Incision-to-delivery interval and total operative times during cesarean delivery were compared among the three groups. Primary outcome was prolonged incision-to-delivery interval as defined by 90th percentile or greater of the study population or 18 minutes or longer. RESULTS: Of the 21,372 women included in the analysis, 9,928 were obese (46.5%) and 2,988 (14.0%) were morbidly obese. Longer operative times were found among women with overweight (median [interquartile range] incision-to-delivery: 9.0 [6.0] and total operative time: 45.0 [21.0] minutes), obese (10.0 [7.0]; 48.0 [22.0] minutes), and morbidly obese BMIs (12.0 [8.0]; 55.0 [26.0] minutes) compared with women with normal BMI at delivery (9.0 [5.0]; 43.0 [20.0] minutes) (P<.001). Morbidly obese women had a more frequent incision-to-delivery interval that was 18 minutes or longer (n=602 [20%] compared with 127 [6%] in normal BMI). After adjustments including number of prior cesarean deliveries, incision-to-delivery interval 18 minutes or longer was significantly related to obese (odds ratio [OR] 1.62, 95% confidence interval [CI] 1.31-2.03) and morbidly obese (OR 2.81, 95% CI 2.24-3.56) BMI at delivery. CONCLUSION: Increasing BMI is related to increased incision-to-delivery interval and total operative time at cesarean delivery with morbidly obese BMI exposing women to the highest risk of prolonged incision-to-delivery interval. LEVEL OF EVIDENCE: : II.

A new model for providing cell-free DNA and risk assessment for chromosome abnormalities in a public hospital setting.

OBJECTIVE: Cell-free DNA (cfDNA) offers highly accurate noninvasive screening for Down syndrome. Incorporating it into routine care is complicated. We present our experience implementing a novel program for cfDNA screening, emphasizing patient education, genetic counseling, and resource management. STUDY DESIGN: Beginning in January 2013, we initiated a new patient care model in which high-risk patients for aneuploidy received genetic counseling at 12 weeks of gestation. Patients were presented with four pathways for aneuploidy risk assessment and diagnosis: (1) cfDNA; (2) integrated screening; (3) direct-to-invasive testing (chorionic villus sampling or amniocentesis); or (4) no first trimester diagnostic testing/screening. Patients underwent follow-up genetic counseling and detailed ultrasound at 18-20 weeks to review first trimester testing and finalize decision for amniocentesis. RESULTS: Counseling and second trimester detailed ultrasound were provided to 163 women. Most selected cfDNA screening (69%) over integrated screening (0.6%), direct-to-invasive testing (14.1%), or no screening (16.6%). Amniocentesis rates decreased following implementation of cfDNA screening (19.0% versus 13.0%, P < 0.05). CONCLUSION: When counseled about screening options, women often chose cfDNA over integrated screening. This program is a model for patient-directed, efficient delivery of a newly available high-level technology in a public health setting. Genetic counseling is an integral part of patient education and determination of plan of care.

Maternal proteinuria in twin compared with singleton pregnancies.

OBJECTIVE: To compare 24-hour urinary protein excretion in twin and singleton pregnancies not complicated by hypertension. METHODS: We prospectively evaluated mean 24-hour urinary protein excretion in twin and singleton pregnancies between 24 0/7 weeks and 36 0/7 weeks of gestation. Women with urinary tract infections, chronic hypertension, pregestational diabetes, and renal or autoimmune diseases were excluded. Collection adequacy was assessed by urinary creatinine excretion adjusted for maternal weight. RESULTS: Adequate samples were obtained from 50 twin and 49 singleton pregnancies at a mean gestational age of 30 weeks. At collection, the two groups were similar with regard to maternal age, gestational age, body mass index, and blood pressure. Mean urinary protein excretion was higher in twin compared with singleton pregnancies (269.3±124.1 mg compared with 204.3±92.5 mg, P=.004). Proteinuria (300 mg/day protein or greater) occurred in 38.0% (n=19) of twin and 8.2% (n=4) of singleton pregnancies (P<.001). After adjusting for confounding variables, the difference in mean total protein excretion remained significant (P=.004) and twins were more likely to have proteinuria compared with singleton pregnancies (adjusted odds ratio 9.1, 95% confidence interval 2.1-38.5). Nineteen participants developed a hypertensive disorder at a mean of 7.7 weeks after the urine collection (range 2.6-14.5 weeks). After excluding these women, proteinuria was present in 43% of twin and 7% of singleton pregnancies (P<.001). CONCLUSION: Mean 24-hour urinary protein excretion in twin pregnancies is greater than in singletons. These data suggest a reevaluation of the diagnostic criteria for preeclampsia in twin pregnancies. LEVEL OF EVIDENCE: II.

Risk factors for classical hysterotomy by gestational age.

OBJECTIVE: To examine the likelihood of classical hysterotomy across preterm gestational ages and to identify factors that increase its occurrence. METHODS: This is a secondary analysis of a prospective observational cohort collected by the Maternal-Fetal Medicine Network of all women with singleton gestations who underwent a cesarean delivery with a known hysterotomy. Comparisons were made based on gestational age. Factors thought to influence hysterotomy type were studied, including maternal age, body mass index, parity, birth weight, small for gestational age (SGA) status, fetal presentation, labor preceding delivery, and emergent delivery. RESULTS: Approximately 36,000 women were eligible for analysis, of whom 34,454 (95.7%) underwent low transverse hysterotomy and 1,562 (4.3%) underwent classical hysterotomy. The median gestational age of women undergoing a classical hysterotomy was 32 weeks and the incidence peaked between 24 0/7 weeks and 25 6/7 weeks (53.2%), declining with each additional week of gestation thereafter (P for trend <.001). In multivariable regression, the likelihood of classical hysterotomy was increased with SGA (n=258; odds ratio [OR] 2.71; confidence interval [CI] 1.78-4.13), birth weight 1,000 g or less (n=467; OR 1.51; CI 1.03-2.24), and noncephalic presentation (n=783; OR 2.03; CI 1.52-2.72). The likelihood of classical hysterotomy was decreased between 23 0/7 and 27 6/7 weeks of gestation and after 32 weeks of gestation when labor preceded delivery, and increased between 28 0/7 and 31 6/7 weeks of gestation and after 32 weeks of gestation by multiparity and previous cesarean delivery. Emergent delivery did not predict classical hysterotomy. CONCLUSIONS: Fifty percent of women at 23-26 weeks of gestation who undergo cesarean delivery have a classical hysterotomy, and the risk declines steadily thereafter. This likelihood is increased by fetal factors, especially SGA and noncephalic presentation. LEVEL OF EVIDENCE: : II.

Uptake of noninvasive prenatal testing (NIPT) in women following positive aneuploidy screening.

OBJECTIVE: The aim of this study was to investigate how the introduction of noninvasive prenatal testing (NIPT) impacted women's testing choices following a positive prenatal screening (PNS) result. METHODS: Beginning in March 2012, women referred to our Prenatal Diagnosis Center following a positive PNS result were offered NIPT or invasive prenatal diagnosis. Rates of invasive testing and declining follow-up were compared with testing decisions the prior year. Differences were compared using t-test and chi-square. Multivariable logistic regression was performed to identify predictors of test choice. RESULTS: Between March 2012 and February 2013, 398 screen positive women were seen: 156 (39.2%) underwent invasive testing, 157 (39.4%) had NIPT and 84 (21.1%) declined further testing. In the prior year, 638 screen positive patients were seen: 301 (47.2%) had invasive testing and 337 (52.8%) declined. The rate of invasive testing declined significantly (p = 0.012). Moreover, fewer women declined follow-up testing after introduction of NIPT, 21.2% versus 52.8%, p ≤ 0.001. Race/ethnicity and timing of results (first versus second trimester) were predictors of testing choices; payer and maternal age were not. CONCLUSION: The introduction of NIPT resulted in a significant decrease in invasive diagnostic testing. Additionally, fewer women declined further testing when NIPT was available.

Up-regulation of oxytocin receptor expression at term is related to maternal body mass index.

BACKGROUND: The likelihood of cesarean is in part related to maternal body mass index (BMI). Myometrial changes may be responsible. METHODS: Myometrial biopsies were collected from the upper edge of the hysterotomy from women undergoing scheduled cesarean with term, singleton gestations. Oxytocin receptor and connexin-43 mRNA protein expression was quantified with real-time polymerase chain reaction and Western blot. RESULTS: Twenty subjects were recruited: 13 repeat and 7 primary cesareans. Oxytocin receptor mRNA was associated with BMI among women undergoing primary (r = 0.75; p = 0.05) but not repeat cesarean (p > 0.05). Controlling for gestational age, this association strengthened (p = 0.004). Receptor protein expression showed a linear correlation with BMI in the primary cesarean group (p = 0.002). Connexin-43 mRNA expression was not related to BMI in women undergoing primary (r = -0.14, p = 0.76) or repeat (r = -0.01, p = 0.86) cesarean. CONCLUSIONS: Oxytocin receptor, but not connexin-43, expression is related to BMI, suggesting an alteration in oxytocin receptor expression or function related to obesity.

Prenatal Diagnosis of Cystic Hygroma related to a Deletion of 16q24.1 with Haploinsufficiency of FOXF1 and FOXC2 Genes.

We report the prenatal diagnosis of cystic hygroma that was subsequently identified to have haploinsufficiency of the FOXF1 and FOXC2 genes via array comparative genomic hybridization (aCGH). Deletion o f these genes has previously neither been associated with cystic hygroma nor prenatally diagnosed. The FOX gene cluster is involved in cardiopulmonary development. This case expands the phenotypic spectrum o f abnormalities of the FOXF1 and FOXC2 genes, as it seems within the spectrum of function that disruption of the FOX gene cluster would lead to include abnormalities of prenatal onset. Identification of this association would not be possible with conventional karyotype or targeted aCGH. This case highlights the power of whole genomic aCGH to further delineate the etiology of birth defects.

Extreme morbid obesity and labor outcome in nulliparous women at term.

We examined the prevalence of cesarean delivery (CD) among women with morbid obesity and extreme morbid obesity. Using Kentucky birth certificate data, a cross-sectional analysis of nulliparous singleton gestations at term was performed. We examined the prevalence of CD by body mass index (BMI; in kg/m2) using the National Institutes of Health/World Health Organization schema and a modified schema that separates extreme morbid obesity (BMI ≥ 50) from morbid obesity (BMI ≥ 40 to < 50). Bivariate and multivariate analyses were performed. Multivariate modeling controlled for maternal age, estimated gestational age, birth weight, diabetes, and hypertensive disorders. Overall, 83,278 deliveries were analyzed. CD was most common among women with a prepregnancy BMI ≥ 50 (56.1%, 95% confidence interval 50.9 to 61.4%). Extreme morbid obesity was most strongly associated with CD (adjusted odds ratio 4.99, 95% confidence interval 4.00 to 6.22). Labor augmentation decreased the likelihood of CD among women with extreme morbid obesity, but this failed to reach statistical significance. We speculate a qualitative or quantitative deficiency in the hormonal regulation of labor exists in the morbidly obese parturient. More research is needed to better understand the influence of morbid obesity on labor.

Violence against women and postpartum depression.

BACKGROUND: Violence against women (VAW), including intimate partner violence (IPV) in its various forms (sexual, physical, or stalking), and childhood violence (sexual or physical) are common and are associated with depressive symptoms. We examined the association between these violence exposures and self-reported history of postpartum depression (PPD). METHODS: Women from the Kentucky Women's Health Registry (KWHR) who reported at least one live birth were included in this study. Individual IPV and child abuse histories were examined for association with self-reported history of PPD. Multivariate regression analysis estimated adjusted risk ratios (aRR) and 95% confidence intervals (95% CI), controlling for age, obstetrical history, and substance abuse history. RESULTS: The 5380 women in the KWHR reporting at least one live birth were included in this study. Of these women, 2508 (46.6%) reported a history of any VAW. A history of adult VAW was associated with a history of PPD (aRR 1.48, 95% CI 1.12-1.95). Physical IPV (aRR 1.48, 95% CI 1.12-1.95) and stalking IPV (aRR 1.39, 95% CI1.03-1.87) were individually associated with PPD. Other types of violence were not individually associated with a history of PPD. The strength of association increased with each additional type of violence experienced (aRR1.17, 95% CI 1.06-1.30). CONCLUSIONS: Adult VAW is associated with self-reported history of PPD. With an increase in the number of types of abuse experienced, this association became stronger. Our findings highlight the need for thorough VAW screening in obstetrical populations.

Neonatal adiposity following maternal treatment of gestational diabetes with glyburide compared with insulin.

OBJECTIVE: We hypothesized that body composition would be similar among neonates of women with gestational diabetes (GDM) treated with glyburide or insulin. STUDY DESIGN: Women with GDM requiring medical therapy were randomized to insulin or glyburide. The primary outcome was percent neonatal fat mass measured by total body electrical conductivity. Secondary outcomes included anthropometrics, glycemic control, and biomarkers. Statistical analysis included Student t test, chi(2), and regression modeling. RESULTS: Eighty-two neonates underwent postnatal measurements. Baseline factors were not different by group. Neonatal percent fat mass did not differ between treatment groups (11.2 +/- 4.2 vs 12.8 +/- 5.7). Fat mass, body mass index, ponderal index, skinfold sum, and arm fat area were not different when analyzed by intent to treat or actual treatment group. Cord concentrations of biomarkers were also similar. CONCLUSION: There was no difference in neonatal adiposity in infants of women treated for GDM with glyburide or insulin.