American journal of perinatology最新文献

Objective:  Chronic hypertension is a known risk factor for the development of preeclampsia and obstetrical morbidity. However, recent risk estimates, particularly in the era of use of low-dose acetylsalicylic acid for preeclampsia prevention, are lacking. This study aimed to estimate the association between chronic hypertension and preeclampsia and other adverse pregnancy outcomes in a contemporary cohort of births spanning the period, since the introduction of a low-dose acetylsalicylic acid protocol. The secondary outcome was to estimate trends in preeclampsia and preterm birth among patients with chronic hypertension during the study period.

Study design:  A retrospective, population-based cohort study was conducted using the National Inpatient Sample Database to identify individuals discharged from hospitals in the United States following obstetrical delivery from 2014 to 2019. Pregnancies complicated by chronic hypertension were identified using ICD 9/10 (International Classification of Diseases 9th and 10th editions) codes. Multivariable logistic regression models were used to estimate the adjusted odds ratios for the association between chronic hypertension and adverse pregnancy outcomes compared with pregnancies not complicated by chronic hypertension. Temporal trends in preeclampsia and preterm birth among patients with chronic hypertension were estimated over the study period.

Results:  Among 4,451,667 obstetrical delivery-related admissions, 139,556 (3.1%) included pregnancies complicated by chronic hypertension. Of these, 27,146 (19.4%) admissions included pregnancies with superimposed preeclampsia, compared with 222,351 (5.2%) of admissions that included pregnancies with preeclampsia without prior diagnosis of chronic hypertension. Pregnancies complicated by chronic hypertension were associated with 3.29 times the odds of preeclampsia compared with pregnancies without chronic hypertension (95% confidence interval: 3.22-3.36), but the odds of preeclampsia (p-value for linear trend <0.0001) and preterm birth (p-value for linear trend = 0.0001) in this subgroup decreased over the study period.

Conclusion:  While the odds of preeclampsia are increased among pregnancies complicated by chronic hypertension, the odds of preeclampsia in this population have decreased over time.

Key points: · Pregnancies complicated by chronic hypertension are at significantly higher odds of preeclampsia.. · Recent guidelines have recommended low-dose acetylsalicylic acid for preeclampsia prevention in these pregnancies.. · In a nationwide cohort, the odds of preeclampsia among these pregnancies are decreasing over time..

Objective: To evaluate cardiorespiratory status in preterm infants receiving dexmedetomidine using high-resolution physiologic data.

Study design: We analyzed preterm infants with continuous heart rate (HR) and oxygen saturation (SpO2) data for 24 hours preceding and 48 hours following dexmedetomidine initiation. Invasive arterial blood pressure (ABP), when available, was analyzed.

Results: In 100 infants with mean gestational age of 28 weeks and high baseline illness severity, mean HR decreased from 152 to 141 beats per minute while mean SpO2 increased from 91% to 93% in the 48 hours after dexmedetomidine initiation (p<0.01). In 57 infants with continuous ABP monitoring, mean ABP increased from 40 to 42 mmHg (p=0.01). Vasoactive-inotropic support increased before and after initiation.

Conclusions: We observed cardiorespiratory changes in critically ill preterm infants following dexmedetomidine initiation; mean HR decreased and mean SpO2 increased in the 48 hours after initiation. In a subset, mean ABP increased along with vasoactive-inotropic support.

Objective: Identify risk factors for postpartum readmission in class 3 obese patients undergoing unscheduled cesarean deliveries.

Study design: Retrospective cohort study of patients with BMI ≥ 40 kg/m2 undergoing unscheduled cesarean delivery from 2017-2020 comparing patients with and without postpartum readmission (unexpected admission, emergency room/overnight observation visit, unscheduled outpatient visit, or ambulatory surgery within 30 days). Medical history, operative data, and postpartum outcomes were compared between the cohorts.

Results: "The electronic medical record was queried to identify cesarean deliveries documented as 'unscheduled'". 255 of 1273 identified patients (20.0%) had a postpartum readmission. Median BMI was similar between the cohorts (44.2 kg/m2, IQR [41.8, 47.9] vs. 44.8 kg/m2 [42.0, 48.9], p= 0.066). Readmitted patients were more likely to have a history of smoking during or prior to pregnancy (p= 0.046). A sub-group exploratory analysis excluding outpatient and emergency room visits demonstrated higher rates of type II diabetes mellitus in patient's with postpartum readmission (11.5% vs 4.6%, p= 0.030). Patients with readmission in comparison to those without readmissions were less likely to receive cefazolin prophylaxis (78.0% vs 84.3%, p= 0.014) in comparison to gentamicin/clindamycin prophylaxis. Patients with readmission were less likely to have had vaginal preparation (56.9% vs 64.3%, p= 0.027). On multivariable logistic regression analysis, smoking history (OR 1.44, 95% CI 1.06-1.96, p= 0.0220) and hypertensive disease (OR 1.57, 95% CI 1.18-2.09, p 0.002) were associated with readmission. Cefazolin preoperative prophylaxis (OR 0.59, 95% CI 0.41-0.84, p= 0.004) and vaginal sterile preparation (OR 0.72, 95% CI 0.54- 0.95, p= 0.022) were associated with decreased risk of readmission.

Conclusions: In class 3 obese patients, a history of smoking and a diagnosis of hypertensive disease associate with increased risk of postpartum readmission. Perioperative antibiotic prophylaxis with cefazolin along with vaginal sterile preparation associate with decreased risk of postpartum readmission.

Continuous glucose monitoring (CGM) improves pregnancy outcomes in type 1 diabetes. Given rapid uptake of CGM in pregnancies complicated by both type 1 and type 2 diabetes, our objective was to determine if CGM satisfaction and use differed between type 1 and type 2 diabetes.Cross-sectional survey study of 100 patients with pregestational diabetes who used Dexcom G6 CGM during pregnancy and received prenatal care at a single tertiary care center. Participants completed the validated 15-question Glucose Monitoring Satisfaction Survey (GMSS) and other questions about CGM use. The primary outcome was high satisfaction with CGM, defined as total GMSS score of 4 or greater. Secondary outcomes included GMSS subscales, frequency of CGM app use, and CGM features used. Outcomes were compared between type 1 and type 2 diabetes, and logistic and ordinal regression estimated the association between type 2 diabetes and outcomes. Of 100 surveyed patients, 45 had type 1 and 55 had type 2 diabetes. Patients with type 1 diabetes were more likely to use CGM before pregnancy and use insulin pump. CGM satisfaction did not differ between type 1 and type 2 diabetes (74.5% vs 56.6%; aOR 0.54, 95%CI 0.21-1.36; Fig). High openness, low behavioral burden, low emotional burden, and high worthwhileness also did not differ between groups after adjustment for CGM use before pregnancy. Reported CGM app use was high and did not differ between groups. Patients with type 2 diabetes were less likely to use arrows and/or graphs on CGM app compared to type 1 diabetes. In this cohort, patients with type 2 diabetes appear to be similarly satisfied with CGM compared to those with type 1 diabetes. Future efforts focused on CGM education for new users may help increase use of CGM app features, maximize satisfaction and minimize technology burden.

Objective Rising maternal morbidity and mortality in the US is a complex problem and is often tied to the postpartum period. Postpartum visits are poorly attended leading to gaps in contraception, mental healthcare, and care for chronic conditions. mHealth, healthcare supported by mobile technologies, has been shown to improve antenatal care adherence. Our study aims to determine whether an mHealth intervention of interactive, educational text messages can improve care for women postpartum. Study Design We conducted a randomized-control trial of 191 women receiving OB/GYN care in our clinic from November 2019-April 2020. Patients were randomized postpartum to receive either routine care or routine care with mHealth text messages and appointment reminders specific to delivery type. The primary endpoint was attendance to the six-week postpartum visit with secondary endpoints of breastfeeding, contraception use, emergency visits, and postpartum depression scores (EPDS). A subgroup analysis was additionally conducted to assess the impact of some visits shifting to telehealth due to the timing of the COVID-19 pandemic. Results Patient demographics were similar between the two groups. There was no significant difference in postpartum appointment attendance between text message (n=57, 59%) and control groups (n=62, 66%, p=0.31). 117 patients were scheduled for in-person postpartum visits, and 74 for telehealth visits during the COVID-19 pandemic, with no significant difference in attendance rate between groups for either visit modality. Conclusion Automated text messages alone did not increase our primary outcome of adherence to postpartum care, even when visits were conducted by telehealth. While mHealth has proven successful in other care areas, such as antepartum follow-up, further research is needed to determine whether it is an effective method to improve adherence to postpartum care, or whether other strategies must be developed, including augmentation with human navigators.

Objective:  Non-Hispanic Black individuals are disproportionately affected by preterm birth (PTB), a major driver of the racial disparity in infant mortality in the United States. The objective of this study is to identify indicators of social determinants of health (SDoH) that contribute to preterm birth amongst non-Hispanic Black individuals.

Study design:  Population-based retrospective case-control study of U.S. birth records (2012-2016). Factors potentially associated with PTB and considered indicators of SDoH were compared between singleton live births of non-Hispanic Black individuals delivering preterm (<37 weeks of gestation) and term (≥37 weeks of gestation). Logistic regression quantified the association between SDoH and PTB such as insurance, education, and prenatal care visits and reported as odds ratios (ORs; 95% confidence interval, CI).

Results:  Of 2,763,235 live births to Black individuals, 340,480 (12%) occurred <37 weeks of gestation. Factors most strongly associated with PTB (p < 0.001), presented as OR (95% CI), included no prenatal care 3.0 (95% CI: 2.9-3.1) or insufficient prenatal care 2.7 (95% CI: 2.7-2.8), smoking during pregnancy 1.4 (95% CI: 1.43-1.47), unmarried 1.18 (95% CI: 1.17-1.19), lack of high school diploma 1.1 (95% CI: 1.12-1.40), lack of father of baby listed on birth certificate 1.22 (1.21-1.23), and Black paternal race 1.10 (1.08-1.12). Receipt of WIC (women, infants, and children) during the pregnancy had a protective effect on PTB risk in Black individuals, OR 0.83 (0.83-0.84).

Conclusion:  Pregnancies in Black individuals who are ≥35 years old, smoke tobacco, utilize Medicaid insurance, have less than a high school education, are unmarried, have little to no prenatal care, Black paternal race, and lack of father of baby listed on birth record had increased risk of PTB. Understanding the lived experience of Black pregnant people and these selected indicators of SDoH that contribute to the risk of PTB may inform development of interventions to address the racial disparity in PTB in the United States.

Key points: · Preterm birth disproportionately affects Black individuals.. · SDoH are contributors to preterm birth.. · This study investigates social determinant influences on preterm birth among Black individuals..

Objective:  A low 1-hour glucose challenge test (GCT) result (<10th percentile for population) has been associated with neonatal morbidity, including small-for-gestational-age birth weight, and it is hypothesized that underlying maternal hypoglycemia may contribute to this neonatal morbidity. We sought to assess whether eligible patients would undergo continuous glucose monitoring to allow comparison of maternal hypoglycemia between those with a low GCT result versus controls.

Study design:  This exploratory study enrolled patients who completed a GCT between 24 and 30 weeks' gestation from June to September 2022. English- or Spanish-speaking participants aged ≥18 years wore a blinded continuous glucose monitor (CGM) for 10 days. There were 10 participants each in the low GCT (<82 mg/dL) and normal GCT group. Proportions were calculated to determine recruitment rates and describe the low versus normal glycemic groups across clinical and sociodemographic characteristics. Maternal hypoglycemia, defined using various proposed thresholds, was analyzed as continuous data (time duration) with Student's t-tests and categorical data (number of episodes) with chi-square tests and bivariate analyses were performed comparing participants with a low versus normal GCT. Primary outcome measures were recruitment, enrollment, and adherence rates, and overall glycemic values for each group.

Results:  Of 64 eligible patients, 58 (91%) were approached, and of them, 20 (35%) were enrolled. All 20 participants had CGM data to review with 100% adherence. Average glucose values were similar between participants in the low GCT and normal GCT groups (111.7 ± 18.0 vs. 111.6 ± 11.7 mg/dL, p = 0.99), and participants with a low GCT value did not demonstrate more hypoglycemia than those with a normal GCT value across five proposed thresholds on CGM analysis.

Conclusion:  In this pilot study, participants wore blinded CGMs to collect glycemic data, and those with a low GCT result did not experience more hypoglycemia than those with a normal GCT on CGM analysis.

Key points: · Study participants wore continuous glucose monitors in blinded mode to gather glycemic data with 100% adherence.. · Participants with a low GCT result (<82 mg/dL) as compared with those with a normal GCT result were not more likely to demonstrate maternal hypoglycemia using several thresholds on CGM analysis.. · In our cohort, there were few participants in either glycemic group who reported food insecurity or lived in a food desert..

Objective:  Between 2008 and 2016, 23% of pregnancy-related deaths in Ohio occurred in an emergency department (ED) or outpatient setting. Prior research showed that 98% of Ohio's delivery hospitals conduct obstetric (OB) emergency simulations, whereas only 30% include ED staff. The goal of the grant was to increase the knowledge, skill, and self-efficacy of emergency medicine (EM) professionals in managing OB emergencies. In addition to EM professionals, there was high interest by obstetrics and gynecology (OB/GYN) and other professionals in the course. Therefore, the goal of the project was to increase these elements for all professionals including EM and non-EM professionals in managing OB emergencies.

Study design:  Twelve virtual training courses using simulated patient encounters and video-based skills training were conducted across Ohio on the management of OB emergencies. Scenarios focused on common causes of pregnancy-related death using data from the Ohio Pregnancy-Associated Mortality Review Committee. Pre- and posttests assessed training effectiveness.

Results:  Between August 1, 2020, and June 30, 2023, 258 learners completed the course. Most were female (76.76%), White (90.61%), and under 45 years old (69.40%). Most (66.49%) were from EM, followed by OB/GYN (18.09%), and other specialties (15.43%) including family medicine and pediatric EM. Most worked in hospital settings (89.19%). Learners reported a median 10.00 (interquartile range [IQR]: 15.00) years in clinical practice. Overall, mean knowledge scores increased by 0.81 (95% confidence interval [CI]: 0.62, 1.01), after the course (p < 0.001). Mean knowledge scores increased by 0.90 (95% CI: 0.64, 1.16; p < 0.001), 0.67 (95% CI: 0.24, 1.09; p = 0.003), and 0.60 (95% CI: 0.16, 1.04; p = 0.01) for those from EM, OB/GYN, and other specialties, respectively. Median scores for reported self-efficacy increased by 24.00 (IQR: 22.33) and self-reported skills increased by 30.42 (IQR: 22.83) points (p < 0.001).

Conclusion:  Virtual simulations can be effective in improving EM, OB, and other professionals' knowledge, self-efficacy, and self-reported skills in managing OB emergencies.

Key points: · Obstetric knowledge and skills can be taught effectively in a virtual environment.. · Educational interventions can use pregnancy-associated mortality data to target local patterns.. · Simulation can teach management of high-acuity, low-frequency obstetric emergencies to learners..

Objective:  To clarify survival for infants affected by periviable prolonged preterm premature rupture of membranes (PPROM) in the military health system (MHS). To add to current literature on outcomes following expectant management, including long-term neurodevelopment outcomes.

Study design:  Retrospective matched cohort review of six level 3 military neonatal intensive care units (NICUs; 2010-2020). Cases were matched 1:1 with control infants, matched by location, gender, gestational age (within 1 week), birth weight (within 300 g), and rupture of membranes (ROM) within 24 hours of delivery. Follow-up data were obtained for each infant through 48 months' corrected age or age of last documented health visit in a military treatment facility.

Results:  Forty-nine infants met inclusion criteria. Mean ROM for cohort infants was 20.7 weeks, with mean latency period of 34.6 days and mean gestational age at delivery of 25.7 weeks. Cohort infants had a mean birth weight of 919 g. Cohort survival to NICU discharge was 75.5 versus 77.6% of controls (p = 0.81). Statistically significant short-term outcomes: oligohydramnios or anhydramnios at delivery (p < 0.0001), pulmonary hypertension (p = 0.0003), and high-frequency ventilation (p = 0.004) were higher in cohort infants. No differences were found regarding rates of early sepsis, intraventricular hemorrhage, surgical necrotizing enterocolitis, oxygen at 36 weeks or at discharge. No statistical difference in long-term outcomes at 18 to 48 months of age or incidence of autism, cerebral palsy, attention deficit hyperactivity disorder, or asthma.

Conclusion:  Cohort survival to discharge in the MHS was 75.5%, higher than previously reported and not different from matched controls. Infants born after periviable PPROM should deliver at centers with access to high-frequency ventilation and ability to manage pulmonary hypertension. There was no difference in long-term neurodevelopment between the groups.

Key points: · Survival to NICU discharge is similar between infants exposed to periviable PPROM and controls.. · Cohort survival to discharge was 75.5%, higher than previously reported in recent literature.. · Infant with periviable PPROM should delivery at centers capable of managing pulmonary complications..

Objectives:  Maternal substance use during pregnancy is a known risk factor for poor birth outcomes and lifelong health consequences. In addition, exposure to domestic and community violence can be associated with adverse birth outcomes. Due to limited research examining public health challenges linked to prenatal substance exposure (PSE)/neonatal abstinence syndrome (NAS) at the population level, we examined possible geographic and temporal intersections between (1) community violence and PSE/NAS, and (2) community gun violence and PSE/NAS.

Study design:  We conducted a study using abstracted records of neonates born at a tertiary referral hospital from 2012 to 2019 having a diagnosis code for PSE/NAS (n = 1,523). Cases of community violence were identified using a hospital-based Trauma Registry during the 2012 to 2019 period (n = 1,580). We identified zones of spatial clustering and geographic overlap between community violence and PSE/NAS using emerging hot spot analysis.

Results:  Geographic and temporal clustering of PSE/NAS occurred. PSE/NAS had statistically significant zones of overlap with community assault cases (New Hot Spot 15 zones, Consecutive 5 zones, Sporadic Hot Spot 62 zones with a p < 0.01). PSE/NAS also clustered with community gun violence (New Hot Spot 11 zones, Consecutive Hot Spot 90 zones, Intensifying Hot Spot 13 zones, Sporadic Hot Spot 20 zones with a p < 0.01).

Conclusion:  Spatiotemporal overlap occurred between community violence and the adverse neonatal event of PSE/NAS. By allocating resources to identified geographic areas of increased risk, the health of vulnerable communities can be improved.

Key points: · PSE/NAS geographically and temporally clusters with community violence.. · PSE/NAS geographically and temporally clusters with community gun violence.. · Resources should be provided to communities with increased risk.. · By allocating resources, communities members' health can be improved..