The role of technology in the care of diabetes mellitus in pregnancy: an expert review

Diabetes mellitus is one of the most commonly encountered pregnancy complications and is associated with multiple adverse perinatal outcomes. Technology has progressed to address the unique challenges patients face in managing diabetes mellitus in pregnancy. Technology has bolstered diabetes mellitus education with smartphone applications focused on nutrition counseling and carbohydrate intake advice. Continuous glucose monitors and insulin infusion systems have shown benefit by simplifying glycemic monitoring and insulin administration. Improvements in glycemic control and perinatal outcomes have been seen with continuous glucose monitor use when compared with intermittent blood glucose monitoring, and more pregnant people are using insulin pumps instead of multiple daily insulin injections. Hybrid closed-loop systems are emerging and are able to integrate continuous glucose monitoring and insulin pump technologies while maximizing automated features in the nonpregnant population, but these have not been endorsed for use in pregnancy yet. Applying telehealth practices has been associated with high patient satisfaction among those with diabetes mellitus in pregnancy, and leveraging remote patient monitoring through telehealth platforms and short-range wireless technologies can reduce the burden of patient visits. As technology becomes more integrated into routine management of diabetes mellitus in pregnancy, practitioners should emphasize individualized counseling and device selection to ensure patient autonomy and safety.

Linked Th17 and Calgranulin Responses in Maternal-cord Blood Dyads of Preterm Gestations with Histologic Chorioamnionitis

Introduction

Maternal-fetal immune crosstalk mechanisms are increasingly identified in the pathogenesis of gestational disorders, including histologic chorioamnionitis (HCA). Although an inflammatory Th17 immune phenotype has been described in preterm neonates with HCA, the associated maternal Th17 response is relatively unknown. To refine our understanding of Th17 biology in this context, we examined Th17 responses in maternal-cord blood dyads of preterm gestations.

Materials and methods

Paired maternal and cord blood (CB) samples were prospectively collected from preterm gestations (23-34 weeks) with HCA or controls. Th17-linked cell frequencies and plasma calgranulin (S100A8, S100A12) levels were determined by flow cytometry and enzyme-linked immunoassay, respectively.

Results

Analyses of 47 maternal-cord blood pairs showed striking parallel increases in Th17 cell frequencies as well as plasma calgranulin levels in the presence of fetal inflammation. Cord blood S100A12 levels were directly correlated with Th17 cell frequencies. In CB cultures, rh-S100A12 promoted in vitro propagation of Th17-type CD4+ cells.

Conclusions

Maternal and CB Th17-linked responses are dually amplified in gestations with HCA, supporting a biological role for maternal-fetal interactions in this disorder. In addition to advancing current knowledge of neonatal Th17 mechanisms, these data shed new light on their association with maternal inflammation.

Predictive index for adverse perinatal outcome in pregnancies complicated by fetal growth restriction

OBJECTIVES

To develop and validate an index predictive of adverse perinatal outcome (APO) in pregnancies meeting the consensus-based criteria for fetal growth restriction (FGR) endorsed by the International Society of Ultrasound in Obstetrics and Gynecology (ISUOG).

METHODS

This was a retrospective analysis of consecutive singleton non-anomalous gestations meeting the ISUOG-endorsed criteria for FGR at a single tertiary care center from November 2010 to August 2020. The dataset was divided randomly into a development set (two-thirds) and a validation set (one-third). The primary composite APO comprised one or more of: perinatal demise, Grade III-IV intraventricular hemorrhage (IVH), periventricular leukomalacia (PVL), seizures, hypoxic ischemic encephalopathy (HIE), necrotizing enterocolitis (NEC), sepsis, bronchopulmonary dysplasia (BPD) and length of stay in the neonatal intensive care unit (NICU) > 7 days. Regression analysis incorporated clinical factors readily available at the time of FGR diagnosis. The sum of β coefficient-based weights yielded an index score, the performance of which was assessed in the validation set. Score cut-offs were selected to identify 'high-risk' and 'low-risk' ranges for which positive (PPV) and negative (NPV) predictive values and positive (LR+) and negative (LR-) likelihood ratios were calculated.

RESULTS

Of the 875 consecutive pregnancies that met the criteria for FGR and were included in the study cohort, 405 (46%) were complicated by one or more components of the composite APO, including 54 (6%) perinatal deaths, 22 (3%) neonates with Grade III-IV IVH and/or PVL, nine (1%) with seizures and/or HIE, 91 (10%) with BPD, 57 (7%) with sepsis, 21 (2%) with NEC, and 361 (41%) who remained in the NICU > 7 days. In addition, 270 (31%) pregnancies were delivered by Cesarean section for non-reassuring fetal status, 43 (5%) were admitted to the NICU for < 7 days, 79 (9%) had 5-min Apgar score < 7, 125/631 (20%) had a cord gas pH ≤ 7.1 and 35/631 (6%) had a base excess ≥ 12 mmol/L. The predictive index we developed included seven factors available at the time of FGR diagnosis: hypertensive disorder of pregnancy (HDP) (+8 points), chronic hypertension without HDP (+4 points), gestational age ≤ 32 weeks (+5 points), absent or reversed end-diastolic flow in the umbilical artery (+8 points), prepregnancy body mass index ≥ 35 kg/m2 (+3 points), isolated abdominal circumference < 3rd  percentile (-4 points) and non-Hispanic black race (-2 points). The bias-corrected bootstrapped (1000 replicates) area under the receiver-operating-characteristics curve (AUC) of the predictive index for composite APO in the validation group was 0.88 (95% CI, 0.84-0.92), which was similar to that in the development group (AUC, 0.86 (95% CI, 0.82-0.89); P = 0.34). In the total cohort, 40% of pregnancies had a low-risk index score (≤ 2), associated with a NPV of 85% (95% CI, 81-88%) and a LR- of 0.21 (95% CI, 0.16-0.27), and 23% had a high-risk index score (≥ 10), associated with a PPV of 96% (95% CI, 93-98%) and a LR+ of 27.36 (95% CI, 14.33-52.23). Of the remaining pregnancies that had an intermediate-risk score, 50% were complicated by composite APO.

CONCLUSION

An easy-to-use index incorporating seven clinical factors readily available at the time of FGR diagnosis is predictive of APO and may prove useful in counseling and management of pregnancies meeting the ISUOG-endorsed criteria for FGR. © 2022 International Society of Ultrasound in Obstetrics and Gynecology.

Care-by-parent model as a tool for reduction of neonatal opioid withdrawal syndrome in neonates exposed to buprenorphine maintenance therapy in-utero

Objective: To determine if a structured care-by-parent (CBP) protocol is associated with a reduction in diagnosis of treatment-requiring Neonatal Opioid Withdrawal Syndrome (NOWS).Study design: We performed a pilot retrospective, case control study of pregnant women enrolled in a comprehensive prenatal care program for opioid-dependent patients during which they received buprenorphine for Medication Assisted Treatment (MAT) for Opioid Use Disorder (OUD). Patients who participated in the CBP program actively roomed-in with their infants even after maternal hospital discharge while infants continued to be monitored for development of treatment-requiring NOWS. The primary outcome was the rate of treatment-requiring NOWS in the CBP grouping.Results: Thirty-two (32) cases that were enrolled in the CBP model were compared with 32 matched controls that were not enrolled in this model. There was a significant reduction in the rate of treatment-requiring NOWS among cases compared to the controls (OR = 0.10; p = .001). Neonates undergoing CBP had a decreased length of stay and lower Finnegan scores compared to those who did not undergo CBPConclusion: Among infants born to mothers with OUD in pregnancy, CBP significantly reduces the rate of treatment-requiring NOWS.

Electrosurgical Settings and Vaginal Cuff Complications

Background and Objectives:

After being encouraged to change the technique for opening the vaginal cuff during robotic surgery, this study was performed to determine the correlation between vaginal cuff complications and electrosurgical techniques.

Methods:

The study group consisted of patients who had their vaginal cuffs opened with a cutting current compared to the group of patients having their vaginal cuff opened with a coagulation current. Data were collected on 150 women who underwent robotic surgery for endometrial cancer. All patients received preoperative antibiotics. Data, including operative time, type of electrosurgery used, estimated blood loss, transfusion rate, and complications, were collected from the patients' records.

Results:

Surgeries in 150 women and the associated complications were studied. The mean age of the patients was not significantly different between the groups (P = .63). The mean body mass index was 38 kg/m² in the coagulation arm and 36 kg/m² in the cutting arm (P = .03). Transfusion was not required. Estimated blood loss and operative time were not significantly different in the coagulation versus the cutting arms (P = .29 and .5; respectively). No patients in the cutting arm and 4 patients (with 5 complications) in the coagulation arm had cuff complications (P = .02).

Conclusions:

Complications involving the vaginal cuff appear to occur more frequently when the vagina is entered by using electrosurgery with coagulation versus cutting in this cohort of patients undergoing robot-assisted surgery for endometrial cancer..