Fetal and Neonatal Reticulocyte Count Response to Intrauterine Transfusion for the Treatment of Red Blood Cell Alloimmunization.

Management of hemolytic disease of the fetus and newborn relies on monitoring of maternal antibody titers, fetal ultrasound, and fetal middle cerebral artery peak systolic velocity studies and is generally treated by intrauterine transfusion (IUT). Few studies have explored fetal and neonate physiological responses to IUT. Our objective was to examine fetal erythropoietic response and to examine neonatal erythropoietic effects after treatment. Thirty-six patients treated from 2005 to 2015 were identified retroactively. The time course of treatment, including gestational age and number of IUT, and timing of delivery were reviewed. Fetal reticulocyte count and neonatal hemoglobin and reticulocyte counts were analyzed for each IUT. For each gestational week, reticulocyte count decreased by ∼8.6% (95% confidence interval [CI]: 5.3-12.0). In the neonatal period, there was significant correlation between hemoglobin at birth and number of transfusions (Spearman correlation 0.473, 95% CI: 0.113-0.715, P =0.01) as well as reticulocyte count at birth and number of transfusions (Spearman correlation: 0.393, 95% CI: 0.058-0.642, P =0.02). IUT appears to have a direct and measurable effect on fetal reticulocyte production which persists in neonates.

Effect of Fasting on Total Bile Acid Levels in Pregnancy.

OBJECTIVE: To evaluate differences between fasting and nonfasting bile acid levels in asymptomatic and symptomatic pregnant women. METHODS: This is a report of two prospective cohort studies describing bile acid levels in the fasting and nonfasting state in pregnancy. The first cohort included asymptomatic women with singleton pregnancies. Women with a diagnosis of cholestasis, symptoms of cholestasis, or intolerance to components of a standardized meal were excluded. Bile acid levels were measured during the second and third trimesters after fasting and again 2 hours after a standardized meal. The second cohort included symptomatic women with singleton pregnancies in whom fasting and nonfasting bile acid levels were measured at the time of symptom evaluation. A cutoff of 10 micromoles/L was used for diagnosis. RESULTS: A total of 27 women were included in the asymptomatic cohort. Median [interquartile range] fasting bile acid levels were significantly lower than nonfasting levels in both the second trimester (4.65 micromoles/L [1.02-29.57] vs 13.62 micromoles/L [2.03-40.26]; P<.001) and third trimester (8.31 micromoles/L [1.14-51.26] vs 17.35 micromoles/L [1.77-62.93]; P<.001). Bile acid levels exceeded 10 micromoles/L in 21% of the fasting samples and in 58% of the nonfasting samples in the third trimester. A total of 26 women were included in the symptomatic cohort. Median [interquartile range] fasting bile acid levels were significantly lower than nonfasting values (11.5 micromoles/L [7-56] vs 13.5 micromoles/L [9-142]; P<.001). Six patients in the symptomatic cohort (23%) had nonfasting bile acid levels greater than 10 micromoles/L that dropped below 10 micromoles/L when fasting. CONCLUSION: Fasting bile acid levels are significantly lower when compared with nonfasting values in both asymptomatic and symptomatic pregnant women. In asymptomatic women, nonfasting bile acid levels often exceeded 10 micromoles/L whereas fasting values did not. In symptomatic women, fasting bile acid levels resulted in 23% fewer diagnoses of cholestasis when compared with nonfasting values. These findings suggest that fasting evaluation of bile acid levels or a higher threshold for diagnosis of cholestasis should be considered.

Single-Dose Levonorgestrel Emergency Contraception and Silent Barriers to Its Access: Is It Really Just One Step?

BACKGROUND: Single-dose levonorgestrel has been legally available over the counter in the United States without age restriction since 2013. The objective of this study was to discover if there are barriers to access and to determine if such barriers vary based on the gender of the person making the purchase. MATERIALS AND METHODS: A male and female caller contacted 146 Richmond, Virginia pharmacies listed on the Plan B One Step® website. Ultimately, these callers interviewed 90 pharmacies via phone and used a rehearsed standardized script to ask eight questions regarding emergency contraception (EC) in relation to availability, age restrictions, parental consent, counseling requirements, and a male's ability to purchase the product. The statistical data were analyzed using Fisher's exact test. RESULTS: Pharmacy employees provided incorrect information to both men and women regarding age restrictions for purchasing Plan B One Step 51% of the time. However, only seven of the pharmacy employees counseled that males were unable to purchase the medication. Both callers received correct information regarding parental consent and in-store counseling at the time of purchase. Pharmacy technicians provided the majority of information, and the male caller was more likely to be transferred to another person when requesting the medication (9 vs. 0 transfers for the male and female callers, respectively). CONCLUSION: Given the inconsistent data provided to the public regarding the purchase of EC, clinicians are obligated to convey accurate up-to-date information to patients about emergency contraceptive products as part of their counseling and should not assume that consumers receive accurate information when inquiring about over-the-counter EC.

Recognition and response to electronic fetal heart rate patterns: impact on newborn outcomes and primary cesarean delivery rate in women undergoing induction of labor.

OBJECTIVE: The objective of the study was to examine the clinical impact of specific fetal monitoring-related practices during induced labor. STUDY DESIGN: This was a prospective, nonrandomized study. RESULTS: We studied 14,398 women undergoing oxytocin induction of labor. A decrease in the infusion rate of oxytocin in the face of specified category II fetal heart rate tracings was associated with a significantly reduced rate of neonatal intensive care unit admission (3.8% vs 5.2%, P = .01) and Apgar score less than 7 at 1 and 5 minutes (4.9% vs 6.4%, P = .01, 0.6% vs 1.1%, P = .04). Compliance with an in-use checklist was associated with both a reduction in the rate of neonatal intensive care unit admission (2.9 vs 4.4, P = .00) and a reduction in the cesarean delivery rate (15.8% vs 18.8%, P = .00). CONCLUSION: Electronic fetal heart rate monitoring improves neonatal outcomes when unambiguous definitions of abnormal fetal heart rate and tachysystole are coupled with specific interventions. Utilization of a checklist for oxytocin monitoring is associated with improved neonatal outcomes and a reduction in the cesarean delivery rate.

On the Breslow-Holubkov estimator.

Breslow and Holubkov (J Roy Stat Soc B 59:447-461 1997a) developed semiparametric maximum likelihood estimation for two-phase studies with a case-control first phase under a logistic regression model and noted that, apart for the overall intercept term, it was the same as the semiparametric estimator for two-phase studies with a prospective first phase developed in Scott and Wild (Biometrica 84:57-71 1997). In this paper we extend the Breslow-Holubkov result to general binary regression models and show that it has a very simple relationship with its prospective first-phase counterpart. We also explore why the design of the first phase only affects the intercept of a logistic model, simplify the calculation of standard errors, establish the semiparametric efficiency of the Breslow-Holubkov estimator and derive its asymptotic distribution in the general case.