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Shi X, Wick JA, Christifano DN, Carlson SE, Brown AR, Mudaranthakam DP, Gajewski BJ. DHA supplementation for early preterm birth prevention: An application of Bayesian finite mixture models to adaptive clinical trial design optimization. Contemp Clin Trials 2024; 144:107633. [PMID: 39013543 DOI: 10.1016/j.cct.2024.107633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 07/08/2024] [Accepted: 07/13/2024] [Indexed: 07/18/2024]
Abstract
BACKGROUND Early preterm birth (ePTB) - born before 34 weeks of gestation - poses a significant public health challenge. Two randomized trials indicated an ePTB reduction among pregnant women receiving high-dose docosahexaenoic acid (DHA) supplementation. One of them is Assessment of DHA on Reducing Early Preterm Birth (ADORE). A survey employed in its secondary analysis identified women with low DHA levels, revealing that they derived greater benefits from high-dose DHA supplementation. This survey's inclusion in future trials can provide critical insights for informing clinical practices. OBJECTIVE To optimize a Phase III trial design, ADORE Precision, aiming at assessing DHA supplement (200 vs. 1000 mg/day) on reducing ePTB among pregnant women with a low baseline DHA. METHODS We propose a Bayesian Hybrid Response Adaptive Randomization (RAR) Design utilizing a finite mixture model to characterize gestational age at birth. Subsequently, a dichotomized ePTB outcome is used to inform trial design using RAR. Simulation studies were conducted to compare a Fixed Design, an Adaptive Design with early stopping, an ADORE-like Adaptive RAR Design, and two new Hybrid Designs with different hyperpriors. DISCUSSION Simulation reveals several advantages of the RAR designs, such as higher allocation to the more promising dose and a trial duration reduction. The proposed Hybrid RAR Designs addresses the statistical power drop observed in Adaptive RAR. The new design model shows robustness to hyperprior choices. We recommend Hybrid RAR Design 1 for ADORE Precision, anticipating that it will yield precise determinations, which is crucial for advancing our understanding in this field.
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Affiliation(s)
- Xiaosong Shi
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, USA.
| | - Jo A Wick
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, USA
| | - Danielle N Christifano
- Department of Dietetics and Nutrition, University of Kansas Medical Center, Kansas City, KS, USA
| | - Susan E Carlson
- Department of Dietetics and Nutrition, University of Kansas Medical Center, Kansas City, KS, USA
| | - Alexandra R Brown
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, USA
| | - Dinesh Pal Mudaranthakam
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, USA
| | - Byron J Gajewski
- Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, USA
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Tanacan A, Sakcak B, Denizli R, Agaoglu Z, Farisogullari N, Kara O, Sahin D. The utility of combined utero-cervical ındex in predicting preterm delivery in pregnant women with preterm uterine contractions. Arch Gynecol Obstet 2024; 310:377-385. [PMID: 38453730 DOI: 10.1007/s00404-024-07395-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 01/19/2024] [Indexed: 03/09/2024]
Abstract
PURPOSE To evaluate the utility of a novel ultrasound index "combined utero-cervical index (CUCI)" in the prediction of preterm delivery. METHODS The present prospective cohort study was conducted in Ankara Bilkent City Hospital Perinatology Clinic between January 1, 2023, and March 31, 2023. Pregnant women with uterine contractions between 24 and 36th gestational weeks but did not have dilatation or effacement were included. CUCI was calculated as: (utero-cervical angle)/(anterior cervical lip thickness + fundal thickness + lower uterine segment thickness + cervical length). In the presence of cervical funneling, one point was added to the final result. A ROC analysis was conducted to determine the potential of CUCI in predicting delivery <37 weeks of gestation, <34 weeks of gestation, and <4 weeks after the first admission to the hospital for uterine contractions, respectively. RESULTS Optimal cut-off values of CUCI were found to be 1.4 (67.1% sensitivity, 67.2% specificity) for predicting delivery at <37th weeks, 1.7 (72.7% sensitivity, 65.7% specificity) for predicting delivery at <34th weeks, and 1.4 (62.5% sensitivity, 61.7% specificity) for predicting delivery at <4 weeks. CONCLUSION CUCI may be used in the prediction of preterm delivery for pregnant women admitted to hospital with preterm uterine contractions.
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Affiliation(s)
- Atakan Tanacan
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey.
| | - Bedri Sakcak
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey
| | - Ramazan Denizli
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey
| | - Zahid Agaoglu
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey
| | - Nihat Farisogullari
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey
| | - Ozgur Kara
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey
| | - Dilek Sahin
- Department of Obstetrics and Gynecology, Turkish Ministry of Health Ankara City Hospital, University of Health Sciences, 06800, Ankara, Turkey
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Shaffer Z, Romero R, Tarca AL, Galaz J, Arenas-Hernandez M, Gudicha DW, Chaiworapongsa T, Jung E, Suksai M, Theis KR, Gomez-Lopez N. The vaginal immunoproteome for the prediction of spontaneous preterm birth: A retrospective longitudinal study. eLife 2024; 13:e90943. [PMID: 38913421 PMCID: PMC11196114 DOI: 10.7554/elife.90943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 05/28/2024] [Indexed: 06/25/2024] Open
Abstract
Background Preterm birth is the leading cause of neonatal morbidity and mortality worldwide. Most cases of preterm birth occur spontaneously and result from preterm labor with intact (spontaneous preterm labor [sPTL]) or ruptured (preterm prelabor rupture of membranes [PPROM]) membranes. The prediction of spontaneous preterm birth (sPTB) remains underpowered due to its syndromic nature and the dearth of independent analyses of the vaginal host immune response. Thus, we conducted the largest longitudinal investigation targeting vaginal immune mediators, referred to herein as the immunoproteome, in a population at high risk for sPTB. Methods Vaginal swabs were collected across gestation from pregnant women who ultimately underwent term birth, sPTL, or PPROM. Cytokines, chemokines, growth factors, and antimicrobial peptides in the samples were quantified via specific and sensitive immunoassays. Predictive models were constructed from immune mediator concentrations. Results Throughout uncomplicated gestation, the vaginal immunoproteome harbors a cytokine network with a homeostatic profile. Yet, the vaginal immunoproteome is skewed toward a pro-inflammatory state in pregnant women who ultimately experience sPTL and PPROM. Such an inflammatory profile includes increased monocyte chemoattractants, cytokines indicative of macrophage and T-cell activation, and reduced antimicrobial proteins/peptides. The vaginal immunoproteome has improved predictive value over maternal characteristics alone for identifying women at risk for early (<34 weeks) sPTB. Conclusions The vaginal immunoproteome undergoes homeostatic changes throughout gestation and deviations from this shift are associated with sPTB. Furthermore, the vaginal immunoproteome can be leveraged as a potential biomarker for early sPTB, a subset of sPTB associated with extremely adverse neonatal outcomes. Funding This research was conducted by the Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS) under contract HHSN275201300006C. ALT, KRT, and NGL were supported by the Wayne State University Perinatal Initiative in Maternal, Perinatal and Child Health.
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Affiliation(s)
- Zachary Shaffer
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
- Department of Physiology, Wayne State University School of MedicineDetroitUnited States
| | - Roberto Romero
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, University of MichiganAnn ArborUnited States
- Department of Epidemiology and Biostatistics, Michigan State UniversityEast LansingUnited States
| | - Adi L Tarca
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
- Department of Computer Science, Wayne State University College of EngineeringDetroitUnited States
- Center for Molecular Medicine and Genetics, Wayne State UniversityDetroitUnited States
| | - Jose Galaz
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
- Division of Obstetrics and Gynecology, Faculty of Medicine, Pontificia Universidad Católica de ChileSantiagoChile
| | - Marcia Arenas-Hernandez
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
| | - Dereje W Gudicha
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
| | - Tinnakorn Chaiworapongsa
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
| | - Eunjung Jung
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
| | - Manaphat Suksai
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
| | - Kevin R Theis
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of MedicineDetroitUnited States
| | - Nardhy Gomez-Lopez
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services (NICHD/NIH/DHHS)BethesdaUnited States
- Department of Obstetrics and Gynecology, Wayne State University School of MedicineDetroitUnited States
- Center for Molecular Medicine and Genetics, Wayne State UniversityDetroitUnited States
- Department of Biochemistry, Microbiology and Immunology, Wayne State University School of MedicineDetroitUnited States
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Kim S, Brennan PA, Slavich GM, Hertzberg V, Kelly U, Dunlop AL. Black-white differences in chronic stress exposures to predict preterm birth: interpretable, race/ethnicity-specific machine learning model. BMC Pregnancy Childbirth 2024; 24:438. [PMID: 38909177 PMCID: PMC11193905 DOI: 10.1186/s12884-024-06613-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 05/29/2024] [Indexed: 06/24/2024] Open
Abstract
BACKGROUND Differential exposure to chronic stressors by race/ethnicity may help explain Black-White inequalities in rates of preterm birth. However, researchers have not investigated the cumulative, interactive, and population-specific nature of chronic stressor exposures and their possible nonlinear associations with preterm birth. Models capable of computing such high-dimensional associations that could differ by race/ethnicity are needed. We developed machine learning models of chronic stressors to both predict preterm birth more accurately and identify chronic stressors and other risk factors driving preterm birth risk among non-Hispanic Black and non-Hispanic White pregnant women. METHODS Multivariate Adaptive Regression Splines (MARS) models were developed for preterm birth prediction for non-Hispanic Black, non-Hispanic White, and combined study samples derived from the CDC's Pregnancy Risk Assessment Monitoring System data (2012-2017). For each sample population, MARS models were trained and tested using 5-fold cross-validation. For each population, the Area Under the ROC Curve (AUC) was used to evaluate model performance, and variable importance for preterm birth prediction was computed. RESULTS Among 81,892 non-Hispanic Black and 277,963 non-Hispanic White live births (weighted sample), the best-performing MARS models showed high accuracy (AUC: 0.754-0.765) and similar-or-better performance for race/ethnicity-specific models compared to the combined model. The number of prenatal care visits, premature rupture of membrane, and medical conditions were more important than other variables in predicting preterm birth across the populations. Chronic stressors (e.g., low maternal education and intimate partner violence) and their correlates predicted preterm birth only for non-Hispanic Black women. CONCLUSIONS Our study findings reinforce that such mid or upstream determinants of health as chronic stressors should be targeted to reduce excess preterm birth risk among non-Hispanic Black women and ultimately narrow the persistent Black-White gap in preterm birth in the U.S.
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Affiliation(s)
- Sangmi Kim
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, USA.
| | | | - George M Slavich
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, CA, USA
| | - Vicki Hertzberg
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, USA
| | - Ursula Kelly
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA, USA
- Atlanta VA Health Care System, Atlanta, GA, USA
| | - Anne L Dunlop
- Department of Gynecology and Obstetrics, School of Medicine, Emory University, Atlanta, GA, USA
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Debiasi E, Honkaniemi H, Aradhya S, Hjern A, Duvander AZ, Juárez SP. Unintended Perinatal Health Consequences Associated With a Swedish Family Policy. JAMA Pediatr 2024; 178:608-615. [PMID: 38587820 PMCID: PMC11002779 DOI: 10.1001/jamapediatrics.2024.0378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 01/04/2024] [Indexed: 04/09/2024]
Abstract
Importance The 1980 and 1986 Swedish so-called speed premium policies aimed at protecting parents' income-based parental leave benefits for birth intervals shorter than 24 and 30 months, respectively, but indirectly encouraged shorter birth spacing and childbearing at older ages, both risk factors for several perinatal health outcomes. Whether those policy changes are associated with perinatal health remains unknown. Objective To evaluate the association between the 1980 and 1986 speed premium policies and perinatal health outcomes. Design, Setting, and Participants This cross-sectional study investigated data from 1 762 784 singleton births in the Swedish Medical Birth Register from January 1, 1974, through December 31, 1991. Data were analyzed from October 11, 2022, to December 12, 2023. Interventions Speed premium policy introduction (January 1, 1980) and extension (January 1, 1986). Main Outcomes and Measures Total population register data were used in an interrupted time series analysis with segmented logistic regression to calculate the odds of preterm birth, low birth weight, small for gestational age (SGA) at preterm, and stillbirth measured before and after the speed premium policy reforms. Subgroup analyses by maternal origin were conducted to evaluate changes by different policy responses. Results Among 1 762 784 births analyzed, 4.8% were preterm (of which 12.0% were SGA), 3.2% had low birth weight, and 0.3% were stillbirths. The 1980 speed premium policy was associated with a 0.3% monthly increase in the odds of preterm birth compared with the period before the reform (odds ratio [OR], 1.0029 [95% CI, 1.002-1.004]), equivalent to a 26.4% increase from January 1, 1980, to December 31, 1985. After the 1986 relaxation of the policy, preterm birth odds decreased 0.5% per month (OR, 0.9951 [95% CI, 0.994-0.996]), equivalent to an 11.1% decrease across the next 6 years. Low birth weight displayed a similar pattern for both reform periods, that is, increased 0.2% (OR, 1.0021; 95% CI, 1.001-1.003) per month in 1980 through 1985 compared with baseline, and decreased 0.3% (OR, 0.9975; 95% CI, 0.996-0.998) per month in the following period, but was attenuated when considering low birth weight at term. Odds of SGA at preterm were decreased after 1980 (OR, 0.9965; 95% CI, 0.994-0.999) but not in 1986 (OR, 1.0009; 95% CI, 0.998-1.003), whereas stillbirths did not change following either reform (1980: OR, 1.0020 [95% CI, 0.999-1.005]; 1986: OR, 1.0002 [95% CI, 0.997-1.003]). Subgroup analyses suggested that perinatal health changes were restricted to births to Swedish- and Nordic-born mothers, the primary groups to adjust their fertility behaviors to the reforms. Conclusions and Relevance Despite its economic advantages for couples, especially for mothers, the introduction of the speed premium policy was associated with adverse perinatal health consequences, particularly for preterm births. Family policies should be carefully designed with a "Health in All Policies" lens to avoid possible unintended repercussions for fertility behaviors and, in turn, perinatal health.
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Affiliation(s)
- Enrico Debiasi
- Centre for Health Equity Studies, Stockholm University/Karolinska Institutet, Stockholm, Sweden
- Department of Public Health Sciences, Stockholm University, Stockholm, Sweden
| | - Helena Honkaniemi
- Centre for Health Equity Studies, Stockholm University/Karolinska Institutet, Stockholm, Sweden
- Department of Public Health Sciences, Stockholm University, Stockholm, Sweden
| | - Siddartha Aradhya
- Stockholm University Demographic Unit, Department of Sociology, Stockholm University, Stockholm, Sweden
| | - Anders Hjern
- Centre for Health Equity Studies, Stockholm University/Karolinska Institutet, Stockholm, Sweden
- Department of Public Health Sciences, Stockholm University, Stockholm, Sweden
| | - Ann-Zofie Duvander
- Stockholm University Demographic Unit, Department of Sociology, Stockholm University, Stockholm, Sweden
- Department of Humanities and Social Sciences, Mid Sweden University, Östersund, Sweden
| | - Sol P. Juárez
- Centre for Health Equity Studies, Stockholm University/Karolinska Institutet, Stockholm, Sweden
- Department of Public Health Sciences, Stockholm University, Stockholm, Sweden
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Mirzaei A, Hiller BC, Stelzer IA, Thiele K, Tan Y, Becker M. Computational Approaches for Connecting Maternal Stress to Preterm Birth. Clin Perinatol 2024; 51:345-360. [PMID: 38705645 DOI: 10.1016/j.clp.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2024]
Abstract
Multiple studies have hinted at a complex connection between maternal stress and preterm birth (PTB). This article describes the potential of computational methods to provide new insights into this relationship. For this, we outline existing approaches for stress assessments and various data modalities available for profiling stress responses, and review studies that sought either to establish a connection between stress and PTB or to predict PTB based on stress-related factors. Finally, we summarize the challenges of computational methods, highlighting potential future research directions within this field.
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Affiliation(s)
- Amin Mirzaei
- Department of Computer Science and Electrical Engineering, Institute for Visual and Analytic Computing, Universität Rostock, Albert-Einstein-Straße 22, 18059 Rostock, Germany
| | - Bjarne C Hiller
- Department of Computer Science and Electrical Engineering, Institute for Visual and Analytic Computing, Universität Rostock, Albert-Einstein-Straße 22, 18059 Rostock, Germany
| | - Ina A Stelzer
- Department of Pathology, University of California San Diego, GPL/CMM-West, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Kristin Thiele
- Division for Experimental Feto-Maternal Medicine, Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Center for Obstetrics and Pediatrics, Martinistrasse 52, 20246 Hamburg, Germany
| | - Yuqi Tan
- Department of Microbiology and Immunology, Stanford University School of Medicine, CSSR3220, 269 Campus Drive, Stanford, CA 94305, USA
| | - Martin Becker
- Department of Computer Science and Electrical Engineering, Institute for Visual and Analytic Computing, Universität Rostock, Albert-Einstein-Straße 22, 18059 Rostock, Germany.
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Stairs J, Hsieh TYJ, Rolnik DL. In Vitro Fertilization and Adverse Pregnancy Outcomes in the Elective Single Embryo Transfer Era. Am J Perinatol 2024; 41:e1045-e1052. [PMID: 36384238 DOI: 10.1055/a-1979-8250] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Our objective was to estimate the association between in vitro fertilization (IVF) pregnancy and adverse pregnancy outcomes during delivery hospital admission in a contemporary, nation-wide cohort of births in the United States. STUDY DESIGN This retrospective, population-based cohort study used the National Inpatient Sample database to identify patients discharged from the hospital following delivery from 2014 to 2019. IVF pregnancies were identified using the International Classification of Disease-Revision 9/10 codes. Crude and adjusted odds ratios of preterm birth and other clinically significant adverse pregnancy outcomes were evaluated using multivariable logistic regression models. Trends in preterm birth and multiple pregnancy were estimated over the study period. The contribution of multiple pregnancy to preterm birth in IVF pregnancy was estimated in a mediation analysis. RESULTS Among 4,451,667 delivery-related discharges, IVF pregnancies were associated with 3.25 times the odds of preterm birth (95% confidence interval [CI]: 3.05-3.46, p < 0.001) compared with non-IVF pregnancy deliveries. Odds of preterm birth in IVF pregnancy delivery discharges decreased over the study period (p-value for linear trend = 0.009). The proportion of multiple pregnancies decreased in IVF pregnancy delivery discharges but remained stable in non-IVF pregnancy deliveries. The proportion of the adjusted effect of IVF pregnancy on preterm birth mediated through multiple pregnancy was 67.6% (95% CI: 62.6-72.7%). CONCLUSION While the odds of adverse pregnancy outcomes are increased compared with non-IVF pregnancies, the odds of preterm birth and multiple gestation have decreased among IVF pregnancies in the United States. KEY POINTS · Pregnancies conceived by in vitro fertilization (IVF) are at significantly higher risk of multiple gestation, preterm birth, and other pregnancy complications.. · Recent guidelines for artificial reproductive treatments recommend single-embryo transfer in IVF.. · Using population-wide data, we demonstrate a significant gradual decline in the rates of preterm birth and other pregnancy complications following IVF in the last decade, mostly mediated by a reduction in multiple pregnancies..
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Affiliation(s)
- Jocelyn Stairs
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Department of Obstetrics and Gynecology, The Ottawa Hospital, Ottawa, Canada
- Department of Obstetrics and Gynecology, Dalhousie University, Halifax, Canada
| | - Tina Y J Hsieh
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
| | - Daniel L Rolnik
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
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Kaempf JW, Wang L, Dunn M. The Triple Aim Quality Improvement Gold Standard Illustrated as Extremely Premature Infant Care. Am J Perinatol 2024; 41:e1172-e1182. [PMID: 36539206 DOI: 10.1055/a-2001-8844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The Triple Aim is widely regarded as the quality improvement gold standard that enhances population health, lowers costs, and betters individual care. There have been no large-scale, sustained demonstrations of such improvement in healthcare. Illustrating the Triple Aim using relevant extremely premature infant outcomes might highlight interwoven proficiency and efficiency complexities that impede sustained value progress. STUDY DESIGN Ten long-term collaborating neonatal intensive care units (NICU) in the Vermont Oxford Network calculated the Triple Aim in 230/7 to 276/7-week infants using three surrogate measures: (1) population health/x-axis-eight major morbidity rates as a composite, risk-adjusted metric; (2) cost/y-axis-total hospital length of stay; and (3) individual care/z-axis-mortality, then illustrated this relationship as a sphere within a three-dimensional cube. RESULTS Three thousand seven hundred six infants born between January 1, 2014 and December 31, 2019, with mean (standard deviation) gestational age of 25.7 (1.4) weeks and birth weight of 803 (208) grams were analyzed. Triple Aim three-axis cube positions varied inconsistently comparing NICUs. Each NICUs' sphere illustrated mixed x- and z-axis movement (clinical proficiency), and y-axis movement (cost efficiency). No NICU demonstrated the theoretically ideal Triple Aim improvement in all three axes. Backward movement in at least one axis occurred in eight NICUs. The whole-group Triple Aim sphere moved forward along the x-axis (better morbidities metric), but moved backward in the y-axis length of stay and z-axis mortality measurements. CONCLUSION Illustrating the Triple Aim gold standard as extreme prematurity outcomes reveals complexities inherent to simultaneous attempts at improving interwoven quality and cost outcomes. Lack of progress using relevant Triple Aim parameters from our well-established collaboration highlights the difficulties prioritizing competing outcomes, variable potentially-better-practice applications amongst NICUs, unmeasured biologic interactions, and obscured cultural-environmental contexts that all likely affect care. Triple Aim excellence, if even remotely possible, will necessitate scalable, evidence-based methodologies, pragmatism regarding inevitable trade-offs, and wise constrained-resource decisions. KEY POINTS · The Triple Aim gold standard is elusive. There is no demonstration of sustained, large-scale success in healthcare and our quality improvement network has previously published benchmark extreme prematuritymorbidity improvements.. · Extreme prematurity outcomes illustrated as the Triple Aim show uneven results in relevant surrogate parameters and Triple Aim achievement, if even possible, will necessitate evidence-based methodologies that are scalable.. · Pragmatism, inevitable trade-offs, and wise constrained-resource decisions are required for Triple Aim success..
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Affiliation(s)
- Joseph W Kaempf
- Providence St. Vincent Medical Center, Women and Children's Services, Medical Data and Research Center, Portland, Oregon
| | - Lian Wang
- Providence St. Vincent Medical Center, Women and Children's Services, Medical Data and Research Center, Portland, Oregon
| | - Michael Dunn
- Department of Newborn and Developmental Paediatrics, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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Trasande L, Nelson ME, Alshawabkeh A, Barrett ES, Buckley JP, Dabelea D, Dunlop AL, Herbstman JB, Meeker JD, Naidu M, Newschaffer C, Padula AM, Romano ME, Ruden DM, Sathyanarayana S, Schantz SL, Starling AP, Hamra GB. Prenatal phthalate exposure and adverse birth outcomes in the USA: a prospective analysis of births and estimates of attributable burden and costs. Lancet Planet Health 2024; 8:e74-e85. [PMID: 38331533 DOI: 10.1016/s2542-5196(23)00270-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 12/06/2023] [Accepted: 12/11/2023] [Indexed: 02/10/2024]
Abstract
BACKGROUND Phthalates are synthetic chemicals widely used in consumer products and have been identified to contribute to preterm birth. Existing studies have methodological limitations and potential effects of di-2-ethylhexyl phthalate (DEHP) replacements are poorly characterised. Attributable fractions and costs have not been quantified, limiting the ability to weigh trade-offs involved in ongoing use. We aimed to leverage a large, diverse US cohort to study associations of phthalate metabolites with birthweight and gestational age, and estimate attributable adverse birth outcomes and associated costs. METHODS In this prospective analysis we used extant data in the US National Institutes of Health Environmental influences on Child Health Outcomes (ECHO) Program from 1998 to 2022 to study associations of 20 phthalate metabolites with gestational age at birth, birthweight, birth length, and birthweight for gestational age z-scores. We also estimated attributable adverse birth outcomes and associated costs. Mother-child dyads were included in the study if there were one or more urinary phthalate measurements during the index pregnancy; data on child's gestational age and birthweight; and singleton delivery. FINDINGS We identified 5006 mother-child dyads from 13 cohorts in the ECHO Program. Phthalic acid, diisodecyl phthalate (DiDP), di-n-octyl phthalate (DnOP), and diisononyl phthalate (DiNP) were most strongly associated with gestational age, birth length, and birthweight, especially compared with DEHP or other metabolite groupings. Although DEHP was associated with preterm birth (odds ratio 1·45 [95% CI 1·05-2·01]), the risks per log10 increase were higher for phthalic acid (2·71 [1·91-3·83]), DiNP (2·25 [1·67-3·00]), DiDP (1·69 [1·25-2·28]), and DnOP (2·90 [1·96-4·23]). We estimated 56 595 (sensitivity analyses 24 003-120 116) phthalate-attributable preterm birth cases in 2018 with associated costs of US$3·84 billion (sensitivity analysis 1·63- 8·14 billion). INTERPRETATION In a large, diverse sample of US births, exposure to DEHP, DiDP, DiNP, and DnOP were associated with decreased gestational age and increased risk of preterm birth, suggesting substantial opportunities for prevention. This finding suggests the adverse consequences of substitution of DEHP with chemically similar phthalates and need to regulate chemicals with similar properties as a class. FUNDING National Institutes of Health.
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Affiliation(s)
- Leonardo Trasande
- Department of Pediatrics, Division of Environmental Pediatrics, New York University Grossman School of Medicine, New York, NY, USA; Department of Population Health, New York University Grossman School of Medicine, New York, NY, USA; New York University Wagner School of Public Service, New York, NY, USA.
| | | | | | - Emily S Barrett
- Department of Biostatistics and Epidemiology, Rutgers University School of Public Health, Piscataway, NJ, USA
| | - Jessie P Buckley
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Dana Dabelea
- Lifecourse Epidemiology Adiposity and Diabetes Center, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Anne L Dunlop
- Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - Julie B Herbstman
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA
| | - John D Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Mrudula Naidu
- Department of Pediatrics, Division of Environmental Pediatrics, New York University Grossman School of Medicine, New York, NY, USA
| | - Craig Newschaffer
- College of Human Health and Development, Penn State University, Hershey, PA, USA
| | - Amy M Padula
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Megan E Romano
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Douglas M Ruden
- Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA
| | - Sheela Sathyanarayana
- Seattle Children's Research Institute, Seattle, WA, USA; Department of Pediatrics, University of Washington, Seattle, WA, USA
| | - Susan L Schantz
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Anne P Starling
- Lifecourse Epidemiology Adiposity and Diabetes Center, University of Colorado Anschutz Medical Campus, Aurora, CO, USA; Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Ghassan B Hamra
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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10
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Jasinski SR, Rowan S, Presby DM, Claydon EA, Capodilupo ER. Wearable-derived maternal heart rate variability as a novel digital biomarker of preterm birth. PLoS One 2024; 19:e0295899. [PMID: 38295026 PMCID: PMC10829979 DOI: 10.1371/journal.pone.0295899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 12/01/2023] [Indexed: 02/02/2024] Open
Abstract
Despite considerable health consequences from preterm births, their incidence remains unchanged over recent decades, due partially to limited screening methods and limited use of extant methods. Wearable technology offers a novel, noninvasive, and acceptable way to track vital signs, such as maternal heart rate variability (mHRV). Previous research observed that mHRV declines throughout the first 33 weeks of gestation in term, singleton pregnancies, after which it improves. The aim of this study was to explore whether mHRV inflection is a feature of gestational age or an indication of time to delivery. This retrospective case-control study considered term and preterm deliveries. Remote data collection via non-invasive wearable technology enabled diverse participation with subjects representing 42 US states and 16 countries. Participants (N = 241) were retroactively identified from the WHOOP (Whoop, Inc.) userbase and wore WHOOP straps during singleton pregnancies between March 2021 and October 2022. Mixed effect spline models by gestational age and time until birth were fit for within-person mHRV, grouped into preterm and term births. For term pregnancies, gestational age (Akaike information criterion (AIC) = 26627.6, R2m = 0.0109, R2c = 0.8571) and weeks until birth (AIC = 26616.3, R2m = 0.0112, R2c = 0.8576) were representative of mHRV trends, with significantly stronger fit for weeks until birth (relative log-likelihood ratio = 279.5). For preterm pregnancies, gestational age (AIC = 1861.9, R2m = 0.0016, R2c = 0.8582) and time until birth (AIC = 1848.0, R2m = 0.0100, R2c = 0.8676) were representative of mHRV trends, with significantly stronger fit for weeks until birth (relative log-likelihood ratio = 859.4). This study suggests that wearable technology, such as the WHOOP strap, may provide a digital biomarker for preterm delivery by screening for changes in nighttime mHRV throughout pregnancy that could in turn alert to the need for further evaluation and intervention.
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Affiliation(s)
- Summer R. Jasinski
- Department of Data Science and Research, WHOOP Inc, Boston, MA, United States of America
| | - Shon Rowan
- Department of Obstetrics and Gynecology, West Virginia University School of Medicine, Morgantown, WV, United States of America
| | - David M. Presby
- Department of Data Science and Research, WHOOP Inc, Boston, MA, United States of America
| | - Elizabeth A. Claydon
- Department of Social and Behavioral Sciences, West Virginia University School of Public Health, Morgantown, WV, United States of America
| | - Emily R. Capodilupo
- Department of Data Science and Research, WHOOP Inc, Boston, MA, United States of America
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11
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Nelson DB, Fomina YY. Challenges in Using Progestin to Prevent Singleton Preterm Births: Current Knowledge and Clinical Advice. Int J Womens Health 2024; 16:119-130. [PMID: 38283999 PMCID: PMC10812715 DOI: 10.2147/ijwh.s394305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 10/23/2023] [Indexed: 01/30/2024] Open
Abstract
Preterm birth is the leading cause of infant morbidity and mortality in children younger than 5 years old and accounts for approximately 35% of newborn deaths worldwide. The use of progestogen therapy for prevention of preterm birth has been one of the most controversial topics in modern obstetrics. Progestogens can be classified as natural or synthetic. Progesterone is a natural progestogen while progestins such as 17-alpha-hydroxyprogesterone caproate (17OHP-C) are synthetic steroid hormones. Evidence supporting the use of progestogens varies by formulation and populations studied. After more than a decade, the US Food and Drug Administration has withdrawn accelerated approval of 17OHP-C for the prevention of recurrent preterm birth in pregnant individuals with a singleton gestation. With this decision, there is no current FDA-approved treatment for prevention of spontaneous preterm birth. In this review, we provide a historical context behind the rise and fall of 17OHP-C clinical application, highlight the challenges behind the data supporting progestogen use, and offer suggestions on how to make an impact on preterm birth moving forward.
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Affiliation(s)
- David B Nelson
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yevgenia Y Fomina
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, TX, USA
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12
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Schmerold L, Martin C, Mehta A, Sobti D, Jaiswal AK, Kumar J, Feldberg I, Munro MG, Lee WC. A cost-effectiveness analysis of intrauterine spacers used to prevent the formation of intrauterine adhesions following endometrial cavity surgery. J Med Econ 2024; 27:170-183. [PMID: 38131367 DOI: 10.1080/13696998.2023.2298584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 12/20/2023] [Indexed: 12/23/2023]
Abstract
AIM To assess, from a United States (US) payer's perspective, the cost-effectiveness of gels designed to separate the endometrial surfaces (intrauterine spacers) placed following intrauterine surgery. MATERIALS AND METHODS A decision tree model was developed to estimate the cost-effectiveness of intrauterine spacers used to facilitate endometrial repair and prevent the formation (primary prevention) and reformation (secondary prevention) of intrauterine adhesions (IUAs) and associated pregnancy- and birth-related adverse outcomes. Event rates and costs were extrapolated from data available in the existing literature. Sensitivity analyses were conducted to corroborate the base case results. RESULTS In this model, using intrauterine spacers for adhesion prevention led to net cost savings for US payers of $2,905 per patient over a 3.5-year time horizon. These savings were driven by the direct benefit of preventing procedures associated with IUA formation ($2,162 net savings) and the indirect benefit of preventing pregnancy-related complications often associated with IUA formation ($3,002). These factors offset the incremental cost of intrauterine spacer use of $1,539 based on an assumed price of $1,800 and the related increase in normal deliveries of $931. Model outcomes were sensitive to the probability of preterm and normal deliveries. Budget impact analyses show overall cost savings of $19.96 per initial member within a US healthcare plan, translating to $20 million over a 5-year time horizon for a one-million-member plan. LIMITATIONS There are no available data on the effects of intrauterine spacers or IUAs on patients' quality of life. Resultingly, the model could not evaluate patients' utility related to treatment with or without intrauterine spacers and instead focused on costs and events avoided. CONCLUSION This analysis robustly demonstrated that intrauterine spacers would be cost-saving to healthcare payers, including both per-patient and per-plan member, through a reduction in IUAs and improvements to patients' pregnancy-related outcomes.
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Affiliation(s)
| | | | | | | | | | | | | | - Malcolm G Munro
- Department of Obstetrics and Gynecology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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13
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Patel VP, Davis M, Li J, Hwang S, Johnson S, Kondejewski J, Croft D, Rood K, Simhan HN. Workplace Productivity Loss and Indirect Costs Associated With Preterm Birth in the United States. Obstet Gynecol 2024; 143:23-34. [PMID: 37851518 PMCID: PMC10715688 DOI: 10.1097/aog.0000000000005404] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/03/2023] [Accepted: 08/10/2023] [Indexed: 10/20/2023]
Abstract
OBJECTIVE To estimate workplace productivity loss and indirect costs in the year after birth among individuals who deliver preterm in the United States. METHODS This retrospective, observational cohort study estimated workplace productivity loss and indirect costs for individuals aged 18-55 years with an inpatient delivery between January 1, 2016, and September 30, 2021, using data from the Merative MarketScan Commercial Claims and Encounters database and the Health and Productivity Management database. Workdays lost and costs attributable to medical-related absenteeism, workplace absenteeism (defined as sick leave, leave, recreational leave, Family Medical Leave Act); disability (defined as short-term and long-term disability), and aggregate workplace productivity loss, a combined outcome measure, were compared between propensity-score-matched birth cohorts: preterm birth (before 37 weeks of gestation) and full-term birth (at or after 37 weeks of gestation). Outcomes were also compared between the full-term birth cohort and preterm birth subgroups (before 32 weeks of gestation and before 34 weeks of gestation). Estimations of indirect costs assumed an 8-hour workday. Costs were inflated to December 2021 U.S. dollars. RESULTS In total, 37,522 individuals were eligible for medical-related absenteeism, 1,028 for workplace absenteeism, 7,880 for disability, and 396 for aggregate workplace productivity loss after propensity score matching. Compared with full-term birth, preterm birth was associated with more workdays lost and costs in the year after childbirth attributable to medical-related absenteeism (differences of 4.2 days and $1,045, P <.001) and disability (differences of 2.8 days and $422, P <.001). Preterm birth was not associated with workplace absenteeism (differences of 1.4 days and $347, P =.787) and aggregate workplace productivity loss (differences of 5.2 days [ P =.080] and $1,021 [ P =.093]). Numerical differences were greater in magnitude and inversely related to gestational age at birth across outcomes. CONCLUSION Preterm birth was associated with medical-related absenteeism, disability claims, and indirect costs in the year after birth compared with full-term birth.
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Affiliation(s)
- Vanessa Perez Patel
- Organon, Jersey City, New Jersey; Medicus Economics LLC, Milton, Massachusetts; Snell Medical Communication, Montreal, Quebec, Canada; The Ohio State University, Columbus, Ohio; and the University of Pittsburgh, Pittsburgh, Pennsylvania
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14
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Whitworth KW, Moussa I, Salihu HM, Chardon Fabien A, Suter M, Aagaard KM, Symanski E. Environmental justice burden and Black-White disparities in spontaneous preterm birth in Harris County, Texas. FRONTIERS IN REPRODUCTIVE HEALTH 2023; 5:1296590. [PMID: 38179111 PMCID: PMC10766384 DOI: 10.3389/frph.2023.1296590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/05/2023] [Indexed: 01/06/2024] Open
Abstract
Introduction Given limited evidence of previous studies, we evaluated the role of environmental justice (EJ) burden (i.e., a neighborhood characterized by both increased environmental burden and socioeconomic deprivation) in Black-White disparities in spontaneous preterm birth (sPTB) in Harris County, Texas and compared results that evaluated neighborhood-level socioeconomic deprivation alone. Methods We conducted a retrospective analysis using PeriBank, a database and biospecimen repository of gravidae giving birth at two hospitals in the Texas Medical Center. We included 3,703 non-Hispanic Black and 5,475 non-Hispanic white gravidae who were U.S.-born, delivered from August 2011-December 2020, and resided in Harris County, TX. We used data from the U.S. EPA EJScreen to characterize the EJ burden of participant's zip code of residence from fine particulate matter (PM2.5), ozone, and proximity to National Priorities List (NPL) sites and calculated zip-code level Area Deprivation Index (ADI). We assessed the contribution of neighborhood-level variables to the Black-White disparity in sPTB by evaluating attenuation of the odds ratio (OR) representing the effect of race in multivariable logistic regression models, controlling for individual-level characteristics. We also conducted race-stratified analyses between each neighborhood variable and sPTB. Exposure indices were treated as continuous variables; in stratified models, ORs and 95% Confidence Intervals (CIs) are presented per 10-unit increase in the neighborhood variable. Results Accounting for individual-level variables, Black gravidae had 79% higher odds of sPTB than white gravidae (OR = 1.79, 95%CI = 1.32, 2.44); the disparity was moderately attenuated when accounting for EJ burden or ADI (ORs ranged from 1.58 to 1.69). Though we observed no association between any of the EJ burden indices and sPTB among white gravidae, we found increased risks among Black gravidae, with ORs of similar magnitude for each EJ variable. For example, Black gravidae experienced 17% increased odds of sPTB associated with a 10-unit increase in the EJ burden index for PM2.5 (OR = 1.17, 95%CI = 0.97, 1.40). No racial differences were observed in the association of ADI with sPTB. Discussion Though we observed limited evidence of the contribution of living in EJ neighborhoods to the Black-White disparity in sPTB, our study suggests living in an EJ neighborhood may differentially impact Black and white gravidae.
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Affiliation(s)
- K. W. Whitworth
- Section of Epidemiology and Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - I. Moussa
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - H. M. Salihu
- Department of Family & Community Medicine, Baylor College of Medicine, Houston, TX, United States
| | - A. Chardon Fabien
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - M. Suter
- Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, Baylor College of Medicine & Texas Children’s Hospital, Houston, TX, United States
| | - K. M. Aagaard
- Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, Baylor College of Medicine & Texas Children’s Hospital, Houston, TX, United States
| | - E. Symanski
- Section of Epidemiology and Population Sciences, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
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15
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Galaz J, Romero R, Greenberg JM, Theis KR, Arenas-Hernandez M, Xu Y, Farias-Jofre M, Miller D, Kanninen T, Garcia-Flores V, Gomez-Lopez N. Host-microbiome interactions in distinct subsets of preterm labor and birth. iScience 2023; 26:108341. [PMID: 38047079 PMCID: PMC10692673 DOI: 10.1016/j.isci.2023.108341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 09/06/2023] [Accepted: 10/23/2023] [Indexed: 12/05/2023] Open
Abstract
Preterm birth, the leading cause of perinatal morbidity, often follows premature labor, a syndrome whose prevention remains a challenge. To better understand the relationship between premature labor and host-microbiome interactions, we conducted a mechanistic investigation using three preterm birth models. We report that intra-amniotic delivery of LPS triggers inflammatory responses in the amniotic cavity and cervico-vaginal microenvironment, causing vaginal microbiome changes and signs of active labor. Intra-amniotic IL-1α delivery causes a moderate inflammatory response in the amniotic cavity but increasing inflammation in the cervico-vaginal space, leading to vaginal microbiome disruption and signs of active labor. Conversely, progesterone action blockade by RU-486 triggers local immune responses accompanying signs of active labor without altering the vaginal microbiome. Preterm labor facilitates ascension of cervico-vaginal bacteria into the amniotic cavity, regardless of stimulus. This study provides compelling mechanistic insights into the dynamic host-microbiome interactions within the cervico-vaginal microenvironment that accompany premature labor and birth.
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Affiliation(s)
- Jose Galaz
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Division of Obstetrics and Gynecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago 8330024, Chile
| | - Roberto Romero
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48824, USA
| | - Jonathan M. Greenberg
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Kevin R. Theis
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Marcia Arenas-Hernandez
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Yi Xu
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Marcelo Farias-Jofre
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Division of Obstetrics and Gynecology, School of Medicine, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago 8330024, Chile
| | - Derek Miller
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Tomi Kanninen
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
| | - Valeria Garcia-Flores
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Nardhy Gomez-Lopez
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, MD 20892, USA
- Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Department of Biochemistry, Microbiology, and Immunology, Wayne State University School of Medicine, Detroit, MI 48201, USA
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI 48201, USA
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
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16
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Torche F, Nobles J. Vaccination, immunity, and the changing impact of COVID-19 on infant health. Proc Natl Acad Sci U S A 2023; 120:e2311573120. [PMID: 38011548 DOI: 10.1073/pnas.2311573120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/19/2023] [Indexed: 11/29/2023] Open
Abstract
In utero exposure to COVID-19 infection may lead to large intergenerational health effects. The impact of infection exposure has likely evolved since the onset of the pandemic as new variants emerge, immunity from prior infection increases, vaccines become available, and vaccine hesitancy persists, such that when infection is experienced is as important as whether it is experienced. We examine the changing impact of COVID-19 infection on preterm birth and the moderating role of vaccination. We offer the first plausibly causal estimate of the impact of maternal COVID-19 infection by using population data with no selectivity, universal information on maternal COVID-19 infection, and linked sibling data. We then assess change in this impact from 2020 to 2023 and evaluate the protective role of COVID-19 vaccination on infant health. We find a substantial adverse effect of prenatal COVID-19 infection on the probability of preterm birth. The impact was large during the first 2 y of the pandemic but had fully disappeared by 2022. The harmful impact of COVID-19 infection disappeared almost a year earlier in zip codes with high vaccination rates, suggesting that vaccines might have prevented thousands of preterm births. The findings highlight the need to monitor the changing consequences of emerging infectious diseases over time and the importance of mitigation strategies to reduce the burden of infection on vulnerable populations.
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Affiliation(s)
- Florencia Torche
- Department of Sociology, Stanford University, Stanford, CA 94305
| | - Jenna Nobles
- Department of Sociology, Center for Demography and Ecology, University of Wisconsin-Madison, Madison, WI 53706
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Baxter C, Crary I, Coler B, Marcell L, Huebner EM, Rutz S, Adams Waldorf KM. Addressing a broken drug pipeline for preterm birth: why early preterm birth is an orphan disease. Am J Obstet Gynecol 2023; 229:647-655. [PMID: 37516401 PMCID: PMC10818026 DOI: 10.1016/j.ajog.2023.07.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 07/19/2023] [Accepted: 07/23/2023] [Indexed: 07/31/2023]
Abstract
Preterm birth remains one of the most urgent unresolved medical problems in obstetrics, yet only 2 therapeutics for preventing preterm birth have ever been approved by the United States Food and Drug Administration, and neither remains on the market. The recent withdrawal of 17-hydroxyprogesterone caproate (17-OHPC, Makena) marks a new but familiar era for obstetrics with no Food and Drug Administration-approved pharmaceuticals to address preterm birth. The lack of pharmaceuticals reflects a broad and ineffective pipeline hindered by extensive regulatory hurdles, soaring costs of performing drug research, and concerns regarding adverse effects among a particularly vulnerable population. The pharmaceutical industry has historically limited investments in research for diseases with similarly small markets, such as cystic fibrosis, given their rarity and diminished projected financial return. The Orphan Drug Act, however, incentivizes drug development for "orphan diseases", defined as affecting <200,000 people in the United States annually. Although the total number of preterm births in the United States exceeds this threshold annually, the early subset of preterm birth (<34 weeks' gestation) would qualify, which is predominantly caused by inflammation and infection. The scientific rationale for classifying preterm birth into early and late subsets is strong given that their etiologies differ, and therapeutics that may be efficacious for one subset may not work for the other. For example, antiinflammatory therapeutics would be expected to be highly effective for early but not late preterm birth. A robust therapeutic pipeline of antiinflammatory drugs already exists, which could be used to target spontaneous early preterm birth, in combination with antibiotics shown to sterilize the amniotic cavity. New applications for therapeutics targeting spontaneous early preterm birth could categorize as orphan disease drugs, which could revitalize the preterm birth therapeutic pipeline. Herein, we describe why drugs targeting early preterm birth should qualify for orphan status, which may increase pharmaceutical interest for this vitally important obstetrical condition.
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Affiliation(s)
- Carly Baxter
- School of Medicine, University of Washington, Seattle, WA
| | - Isabelle Crary
- School of Medicine, University of Washington, Seattle, WA
| | - Brahm Coler
- Elson S. Floyd College of Medicine, Washington State University, Spokane, WA
| | - Lauren Marcell
- School of Medicine, University of Washington, Seattle, WA
| | | | - Sara Rutz
- School of Medicine, University of Washington, Seattle, WA
| | - Kristina M Adams Waldorf
- Departments of Obstetrics and Gynecology and Global Health, University of Washington, Seattle, WA.
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Conde-Agudelo A, Romero R, Rehal A, Brizot ML, Serra V, Da Fonseca E, Cetingoz E, Syngelaki A, Perales A, Hassan SS, Nicolaides KH. Vaginal progesterone for preventing preterm birth and adverse perinatal outcomes in twin gestations: a systematic review and meta-analysis. Am J Obstet Gynecol 2023; 229:599-616.e3. [PMID: 37196896 PMCID: PMC10646154 DOI: 10.1016/j.ajog.2023.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/19/2023]
Abstract
OBJECTIVE To evaluate the efficacy of vaginal progesterone for the prevention of preterm birth and adverse perinatal outcomes in twin gestations. DATA SOURCES MEDLINE, Embase, LILACS, and CINAHL (from their inception to January 31, 2023), Cochrane databases, Google Scholar, bibliographies, and conference proceedings. STUDY ELIGIBILITY CRITERIA Randomized controlled trials that compared vaginal progesterone to placebo or no treatment in asymptomatic women with a twin gestation. METHODS The systematic review was conducted according to the Cochrane Handbook for Systematic Reviews of Interventions. The primary outcome was preterm birth <34 weeks of gestation. Secondary outcomes included adverse perinatal outcomes. Pooled relative risks with 95% confidence intervals were calculated. We assessed the risk of bias in each included study, heterogeneity, publication bias, and quality of evidence, and performed subgroup and sensitivity analyses. RESULTS Eleven studies (3401 women and 6802 fetuses/infants) fulfilled the inclusion criteria. Among all twin gestations, there were no significant differences between the vaginal progesterone and placebo or no treatment groups in the risk of preterm birth <34 weeks (relative risk, 0.99; 95% confidence interval, 0.84-1.17; high-quality evidence), <37 weeks (relative risk, 0.99; 95% confidence interval, 0.92-1.06; high-quality evidence), and <28 weeks (relative risk, 1.00; 95% confidence interval, 0.64-1.55; moderate-quality evidence), and spontaneous preterm birth <34 weeks of gestation (relative risk, 0.97; 95% confidence interval, 0.80-1.18; high-quality evidence). Vaginal progesterone had no significant effect on any of the perinatal outcomes evaluated. Subgroup analyses showed that there was no evidence of a different effect of vaginal progesterone on preterm birth <34 weeks of gestation related to chorionicity, type of conception, history of spontaneous preterm birth, daily dose of vaginal progesterone, and gestational age at initiation of treatment. The frequencies of preterm birth <37, <34, <32, <30, and <28 weeks of gestation and adverse perinatal outcomes did not significantly differ between the vaginal progesterone and placebo or no treatment groups in unselected twin gestations (8 studies; 3274 women and 6548 fetuses/infants). Among twin gestations with a transvaginal sonographic cervical length <30 mm (6 studies; 306 women and 612 fetuses/infants), vaginal progesterone was associated with a significant decrease in the risk of preterm birth occurring at <28 to <32 gestational weeks (relative risks, 0.48-0.65; moderate- to high-quality evidence), neonatal death (relative risk, 0.32; 95% confidence interval, 0.11-0.92; moderate-quality evidence), and birthweight <1500 g (relative risk, 0.60; 95% confidence interval, 0.39-0.88; high-quality evidence). Vaginal progesterone significantly reduced the risk of preterm birth occurring at <28 to <34 gestational weeks (relative risks, 0.41-0.68), composite neonatal morbidity and mortality (relative risk, 0.59; 95% confidence interval, 0.33-0.98), and birthweight <1500 g (relative risk, 0.55; 95% confidence interval, 0.33-0.94) in twin gestations with a transvaginal sonographic cervical length ≤25 mm (6 studies; 95 women and 190 fetuses/infants). The quality of evidence was moderate for all these outcomes. CONCLUSION Vaginal progesterone does not prevent preterm birth, nor does it improve perinatal outcomes in unselected twin gestations, but it appears to reduce the risk of preterm birth occurring at early gestational ages and of neonatal morbidity and mortality in twin gestations with a sonographic short cervix. However, more evidence is needed before recommending this intervention to this subset of patients.
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Affiliation(s)
- Agustin Conde-Agudelo
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, United States Department of Health and Human Services, Bethesda, MD and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI.
| | - Roberto Romero
- Pregnancy Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, United States Department of Health and Human Services, Bethesda, MD and Detroit, MI; Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI.
| | - Anoop Rehal
- Fetal Medicine Research Institute, King's College Hospital, London, United Kingdom
| | - Maria L Brizot
- Departamento de Obstetrícia e Ginecologia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Vicente Serra
- Maternal-Fetal Medicine Unit, Instituto Valenciano de Infertilidad, University of Valencia, Valencia, Spain; Department of Pediatrics, Obstetrics and Gynecology, University of Valencia, Valencia, Spain
| | - Eduardo Da Fonseca
- Departamento de Obstetrícia e Ginecologia, Hospital do Servidor Público Estadual Francisco Morato de Oliveira and School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Elcin Cetingoz
- Department of Obstetrics and Gynecology, Zeynep Kamil Women and Children Diseases Education and Research Hospital, Istanbul, Turkey
| | - Argyro Syngelaki
- Fetal Medicine Research Institute, King's College Hospital, London, United Kingdom
| | - Alfredo Perales
- Department of Pediatrics, Obstetrics and Gynecology, University of Valencia, Valencia, Spain; Department of Obstetrics, University Hospital La Fe, Valencia, Spain
| | - Sonia S Hassan
- Office of Women's Health, Integrative Biosciences Center, Wayne State University, Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI; Department of Physiology, Wayne State University School of Medicine, Detroit, MI
| | - Kypros H Nicolaides
- Fetal Medicine Research Institute, King's College Hospital, London, United Kingdom
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Ryckman KK, Holdefer PJ, Sileo E, Carlson C, Weathers N, Jasper EA, Cho H, Oltman SP, Dagle JM, Jelliffe-Pawlowski LL, Rogers EE. The validity of hospital diagnostic and procedure codes reflecting morbidity in preterm neonates born <32 weeks gestation. J Perinatol 2023; 43:1374-1378. [PMID: 37138163 PMCID: PMC10860645 DOI: 10.1038/s41372-023-01685-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/11/2023] [Accepted: 04/19/2023] [Indexed: 05/05/2023]
Abstract
OBJECTIVE To determine the validity of diagnostic hospital billing codes for complications of prematurity in neonates <32 weeks gestation. STUDY DESIGN Retrospective cohort data from discharge summaries and clinical notes (n = 160) were reviewed by trained, blinded abstractors for the presence of intraventricular hemorrhage (IVH) grades 3 or 4, periventricular leukomalacia (PVL), necrotizing enterocolitis (NEC), stage 3 or higher, retinopathy of prematurity (ROP), and surgery for NEC or ROP. Data were compared to diagnostic billing codes from the neonatal electronic health record. RESULTS IVH, PVL, ROP and ROP surgery had strong positive predictive values (PPV > 75%) and excellent negative predictive values (NPV > 95%). The PPVs for NEC (66.7%) and NEC surgery (37.1%) were low. CONCLUSION Diagnostic hospital billing codes were observed to be a valid metric to evaluate preterm neonatal morbidities and surgeries except in the instance of more ambiguous diagnoses such as NEC and NEC surgery.
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Affiliation(s)
- Kelli K Ryckman
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA.
- Department of Epidemiology and Biostatistics, Indiana University, Bloomington, IN, USA.
| | - Paul J Holdefer
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
- Department of Community and Behavioral Health, University of Iowa, Iowa City, IA, USA
| | - Eva Sileo
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
| | - Claire Carlson
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
| | - Nancy Weathers
- Department of Epidemiology, University of Iowa, Iowa City, IA, USA
| | - Elizabeth A Jasper
- Division of Quantitative Sciences, Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, TN, USA
- Center for Precision Medicine, Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Hyunkeun Cho
- Department of Biostatistics, University of Iowa, Iowa City, IA, USA
| | - Scott P Oltman
- Department of Epidemiology & Biostatistics, University of California, San Francisco, San Francisco, CA, USA
- UCSF California Preterm Birth Initiative, San Francisco, CA, USA
| | - John M Dagle
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Laura L Jelliffe-Pawlowski
- Department of Epidemiology & Biostatistics, University of California, San Francisco, San Francisco, CA, USA
- UCSF California Preterm Birth Initiative, San Francisco, CA, USA
| | - Elizabeth E Rogers
- UCSF California Preterm Birth Initiative, San Francisco, CA, USA
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA, USA
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20
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Deng W, Anastasopoulos S, deRegnier RA, Pouppirt N, Barlow AK, Patrick C, O’Brien MK, Babula S, Sukal-Moulton T, Peyton C, Morgan C, Rogers JA, Lieber RL, Jayaraman A. Protocol for a randomized controlled trial to evaluate a year-long (NICU-to-home) evidence-based, high dose physical therapy intervention in infants at risk of neuromotor delay. PLoS One 2023; 18:e0291408. [PMID: 37725613 PMCID: PMC10508609 DOI: 10.1371/journal.pone.0291408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 08/29/2023] [Indexed: 09/21/2023] Open
Abstract
INTRODUCTION Developmental disabilities and neuromotor delay adversely affect long-term neuromuscular function and quality of life. Current evidence suggests that early therapeutic intervention reduces the severity of motor delay by harnessing neuroplastic potential during infancy. To date, most early therapeutic intervention trials are of limited duration and do not begin soon after birth and thus do not take full advantage of early neuroplasticity. The Corbett Ryan-Northwestern-Shirley Ryan AbilityLab-Lurie Children's Infant Early Detection, Intervention and Prevention Project (Project Corbett Ryan) is a multi-site longitudinal randomized controlled trial to evaluate the efficacy of an evidence-based physical therapy intervention initiated in the neonatal intensive care unit (NICU) and continuing to 12 months of age (corrected when applicable). The study integrates five key principles: active learning, environmental enrichment, caregiver engagement, a strengths-based approach, and high dosage (ClinicalTrials.gov identifier NCT05568264). METHODS We will recruit 192 infants at risk for neuromotor delay who were admitted to the NICU. Infants will be randomized to either a standard-of-care group or an intervention group; infants in both groups will have access to standard-of-care services. The intervention is initiated in the NICU and continues in the infant's home until 12 months of age. Participants will receive twice-weekly physical therapy sessions and caregiver-guided daily activities, assigned by the therapist, targeting collaboratively identified goals. We will use various standardized clinical assessments (General Movement Assessment; Bayley Scales of Infant and Toddler Development, 4th Edition (Bayley-4); Test of Infant Motor Performance; Pediatric Quality of Life Inventory Family Impact Module; Alberta Infant Motor Scale; Neurological, Sensory, Motor, Developmental Assessment; Hammersmith Infant Neurological Examination) as well as novel technology-based tools (wearable sensors, video-based pose estimation) to evaluate neuromotor status and development throughout the course of the study. The primary outcome is the Bayley-4 motor score at 12 months; we will compare scores in infants receiving the intervention vs. standard-of-care therapy.
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Affiliation(s)
- Weiyang Deng
- Shirley Ryan AbilityLab, Chicago, Illinois, United States of America
| | | | - Raye-Ann deRegnier
- Division of Neonatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
- Department of Pediatrics (Neonatology), Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Nicole Pouppirt
- Division of Neonatology, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
- Department of Pediatrics (Neonatology), Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Ann K. Barlow
- Shirley Ryan AbilityLab, Chicago, Illinois, United States of America
| | - Cheryl Patrick
- Division of Rehabilitative Services, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, United States of America
| | - Megan K. O’Brien
- Shirley Ryan AbilityLab, Chicago, Illinois, United States of America
- Department of Physical Medicine & Rehabilitation, Feinberg School of Medicine, Northwestern Medicine, Chicago, IL, United States of America
| | - Sarah Babula
- Pathways.org, Shirley Ryan AbilityLab, Chicago, Illinois, United States of America
| | - Theresa Sukal-Moulton
- Department of Physical Therapy and Human Movement Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Colleen Peyton
- Department of Physical Therapy and Human Movement Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
- Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
| | - Catherine Morgan
- Cerebral Palsy Alliance Research Institute, Discipline of Child and Adolescent Health, The University of Sydney, Sydney, New South Wales, Australia
| | - John A. Rogers
- Department of Biomedical Engineering, Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois, United States of America
- Departments of Materials Science and Engineering, Chemistry, Mechanical Engineering, Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois, United States of America
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Richard L. Lieber
- Shirley Ryan AbilityLab, Chicago, Illinois, United States of America
- Department of Biomedical Engineering, Querrey Simpson Institute for Bioelectronics, Northwestern University, Evanston, Illinois, United States of America
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
- Jessie Brown Jr., Hines V.A. Medical Center, Hines, Illinois, United States of America
| | - Arun Jayaraman
- Shirley Ryan AbilityLab, Chicago, Illinois, United States of America
- Department of Physical Medicine & Rehabilitation, Feinberg School of Medicine, Northwestern Medicine, Chicago, IL, United States of America
- Department of Physical Therapy and Human Movement Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States of America
- Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
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21
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Sveiven M, Gassman A, Rosenberg J, Chan M, Boniface J, O’Donoghue AJ, Laurent LC, Hall DA. A dual-binding magnetic immunoassay to predict spontaneous preterm birth. Front Bioeng Biotechnol 2023; 11:1256267. [PMID: 37790251 PMCID: PMC10542577 DOI: 10.3389/fbioe.2023.1256267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/25/2023] [Indexed: 10/05/2023] Open
Abstract
Complications posed by preterm birth (delivery before 37 weeks of pregnancy) are a leading cause of newborn morbidity and mortality. The previous discovery and validation of an algorithm that includes maternal serum protein biomarkers, sex hormone-binding globulin (SHBG), and insulin-like growth factor-binding protein 4 (IBP4), with clinical factors to predict preterm birth represents an opportunity for the development of a widely accessible point-of-care assay to guide clinical management. Toward this end, we developed SHBG and IBP4 quantification assays for maternal serum using giant magnetoresistive (GMR) sensors and a self-normalizing dual-binding magnetic immunoassay. The assays have a picomolar limit of detections (LOD) with a relatively broad dynamic range that covers the physiological level of the analytes as they change throughout gestation. Measurement of serum from pregnant donors using the GMR assays was highly concordant with those obtained using a clinical mass spectrometry (MS)-based assay for the same protein markers. The MS assay requires capitally intense equipment and highly trained operators with a few days turnaround time, whereas the GMR assays can be performed in minutes on small, inexpensive instruments with minimal personnel training and microfluidic automation. The potential for high sensitivity, accuracy, and speed of the GMR assays, along with low equipment and personnel requirements, make them good candidates for developing point-of-care tests. Rapid turnaround risk assessment for preterm birth would enable patient testing and counseling at the same clinic visit, thereby increasing the timeliness of recommended interventions.
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Affiliation(s)
- Michael Sveiven
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
| | - Andrew Gassman
- Sera Prognostics, Inc., Salt Lake City, UT, United States
| | - Joshua Rosenberg
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA, United States
| | - Matthew Chan
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA, United States
| | - Jay Boniface
- Sera Prognostics, Inc., Salt Lake City, UT, United States
| | - Anthony J. O’Donoghue
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA, United States
| | - Louise C. Laurent
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Diego, La Jolla, CA, United States
| | - Drew A. Hall
- Department of Bioengineering, University of California, San Diego, La Jolla, CA, United States
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA, United States
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Mohiti Ardakani E, Mazaheri M, Ph.D., Forouzanfar M, Mojibian M, Jafarinia M. Crucial role of corticotropin-releasing hormone, corticotropin-releasing hormone -binding protein, mir-200c, and mir-181a in preterm delivery: A case-control study. Int J Reprod Biomed 2023; 21:715-722. [PMID: 37969569 PMCID: PMC10643681 DOI: 10.18502/ijrm.v21i9.14398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/11/2023] [Accepted: 06/19/2023] [Indexed: 11/17/2023] Open
Abstract
Background Preterm birth before 37th wk of gestation is called premature birth. Corticotropin-releasing hormone (CRH) and CRH-binding protein (BP) act on various maternal and fetal tissues during pregnancy, such as the myometrium, which regulates the transition from the dormant phase of the uterus to the active phase. Studies have shown that mir-200c and mir-181a interact with CRH and CRH-BP. Objective The present study aimed to investigate the expression of mir-200c, mir-181a, CRH, and CRH-BP in women with a history of preterm birth. Materials and Methods In this case-control study, the gene expression level of mir-200c, mir-181a, CRH, and CRH-BP in placental tissue samples obtained from 48 women with a history of preterm labor was assessed in the Mojibian hospital of Yazd, Iran, from January to March 2023. Differences between mir-200c, mir-181a CRH, and CRH-BP gene expressions among cases and controls were assessed. Results The outcomes indicated that the expression of CRH increased with going on to the regular parturition time (p < 0.001). While outcomes indicated, CRH-BP decreased with going on to the regular parturition time (p < 0.001). In addition, the results showed that the expression of mir-181a increased and mir-200c decreased with approaching the normal delivery time (p < 0.001). Conclusion In conclusion, the expressions of mir-200c, mir-181a, CRH, and CRH-BP were dissimilar in different weeks of gestation. It could be proposed to use mir-200c, mir-181a, CRH, and CRH-BP as biomarkers to weigh the exact delivery time, which could minimize the side effects of preterm labor for the mother and fetus.
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Affiliation(s)
- Ehsan Mohiti Ardakani
- Department of Biology, Faculty of Science, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
| | - Mahta Mazaheri
- Department of Medical Genetics, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Mother and Newborn Health Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | | | - Mohsen Forouzanfar
- Department of Biology, Faculty of Science, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
| | | | - Mojtaba Jafarinia
- Department of Biology, Faculty of Science, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran
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23
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Osborn EK, Alshaikh E, Nelin LD, Jadcherla SR. A decade of evidence: standardized feeding initiative targeting feeding milestones and predicting NICU stays in premature infants in an all-referral level IV NICU. J Perinatol 2023; 43:1105-1112. [PMID: 37117395 PMCID: PMC10147899 DOI: 10.1038/s41372-023-01675-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/10/2023] [Accepted: 04/12/2023] [Indexed: 04/30/2023]
Abstract
OBJECTIVE Ten-year data from the simplified, individualized, milestone-targeted, pragmatic, longitudinal and educational (SIMPLE) feeding initiative were examined by gestational age (GA) category to characterize the feeding milestones, length of hospital stays (LOHS), annual variability and predictive models for LOHS. STUDY DESIGN Preterm infants (≤32 weeks GA, N = 434) in level-IV NICU had milestone-targeted feeding plans. Continuous data were analyzed for outcomes. RESULTS Over 93% successfully attained full oral feedings. Earlier acquisition of feeding milestones correlated with earlier discharge (P < 0.05). Year-wise analysis showed sustained maintenance of milestones (P < 0.05). Milestones and outcomes (P < 0.001) were significantly correlated with different GA categories. Prediction models for LOHS were derived using GA, BPD, age at full enteral, postmenstrual age (PMA) at 1st and full oral feeds. CONCLUSIONS The SIMPLE feeding program minimized variability and promoted acquisition of feeding milestones consistently. LOHS is predictable using feeding milestones, co-morbidities, GA, and PMA at feeding milestones.
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Affiliation(s)
- Erika K Osborn
- The Innovative Feeding Disorders Research Program, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Enas Alshaikh
- The Innovative Feeding Disorders Research Program, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Leif D Nelin
- Division of Neonatology, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Sudarshan R Jadcherla
- The Innovative Feeding Disorders Research Program, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
- Division of Neonatology, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
- Division of Pediatric Gastroenterology and Nutrition, Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH, USA.
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24
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Okobi OE, Ibanga IU, Egbujo UC, Egbuchua TO, Oranu KP, Oranika US. Trends and Factors Associated With Mortality Rates of Leading Causes of Infant Death: A CDC Wide-Ranging Online Data for Epidemiologic Research (CDC WONDER) Database Analysis. Cureus 2023; 15:e45652. [PMID: 37868558 PMCID: PMC10589454 DOI: 10.7759/cureus.45652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2023] [Indexed: 10/24/2023] Open
Abstract
BACKGROUND Infant mortality is a critical indicator of a nation's healthcare system and social well-being. This study explores trends and factors associated with mortality rates for three leading causes of infant death: congenital malformations, deformations, and chromosomal abnormalities; disorders related to short gestation and low birth weight, not elsewhere classified; and sudden infant death syndrome (SIDS). METHODS Utilizing the CDC WONDER (CDC Wide-Ranging Online Data for Epidemiologic Research) database, we conducted a retrospective observational analysis of infant mortality rates and associated factors. Data encompassed multiple years, allowing for trend analysis and exploration of influencing variables. Study variables included demographic, maternal, prenatal, and leading cause as factors. RESULT Trends in infant mortality rates varied across causes. The overall mortality rate was 2.69 per 1,000 (p=0.000) people during 2007-2020. The highest rates were observed in 2007 (3.05), 2008 (3.01), and 2009 (2.93) per 1,000 infants. For congenital malformations, deformations, and chromosomal abnormalities, the rate ranged from 1.35 to 1.12 (2007-2020). Gender-based mortality differences were subtle (male rate 2.88 per 1,000 infants, p=0.000; female infants 2.50 per 1,000 infants, p=0.000). The examination of infant mortality trends also explored maternal variables, including maternal age, education, and delivery method. The analysis revealed disparities across variables. Teenage maternal age correlated with higher mortality rates, while maternal education was associated with lower rates. Vaginal delivery (2.61 per 1,000 infants, p=0.199) showed slightly lower rates compared to cesarean section (2.86 per 1,000 infants, p=0.076). CONCLUSION This study utilizes the CDC WONDER database and offers evidence of changing trends in infant mortality rates for the selected causes. Factors such as maternal age (30-34 years and 35-39 years), race/ethnicity (Black or African-American and White), birthplace (in hospital), and mother's education (master's degree) were identified as influencing mortality rates. These findings contribute to informed policymaking and interventions aimed at mitigating infant mortality and improving the well-being of infants and their families. Further research is needed to fully understand the underlying dynamics of these trends and factors.
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Affiliation(s)
- Okelue E Okobi
- Family Medicine, Larkin Community Hospital Palm Springs Campus, Miami, USA
- Family Medicine, Medficient Health Systems, Laurel, USA
- Family Medicine, Lakeside Medical Center, Belle Glade, USA
| | | | | | - Thelma O Egbuchua
- Pediatrics and Neonatology, Delta State University Teaching Hospital, Oghara, NGA
| | - Kelechukwu P Oranu
- Obstetrics and Gynaecology, Kenechukwu Specialist Hospital and Maternity, Enugu, NGA
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King B, Patel RM. Using Quality Improvement to Improve Value and Reduce Waste. Clin Perinatol 2023; 50:489-506. [PMID: 37201993 DOI: 10.1016/j.clp.2023.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Value is defined as health outcomes achieved per dollar spent. Addressing value in quality improvement (QI) efforts can help optimize patient outcomes while reducing unnecessary spending. In this article, we discuss how QI focused on reducing morbidities frequently reduces costs, and how proper cost accounting can help demonstrate improvements in value. We provide examples of high-yield opportunities for value improvement in neonatology and review the literature associated with these topics. Opportunities include reducing neonatal intensive care admissions for low-acuity infants, sepsis evaluations in low-risk infants, unnecessary total parental nutrition use, and utilization of laboratory and imaging.
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Affiliation(s)
- Brian King
- Department of Pediatrics, University of Pittsburg School of Medicine.
| | - Ravi M Patel
- Emory University School of Medicine and Children's Healthcare of Atlanta, 2015 Uppergate Drive, NE, Atlanta, GA 30322, USA
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Sampaio F, Häggström J, Ssegonja R, Eurenius E, Ivarsson A, Pulkki-Brännström AM, Feldman I. Health and economic outcomes of a universal early intervention for parents and children from birth to age five: evaluation of the Salut Programme using a natural experiment. COST EFFECTIVENESS AND RESOURCE ALLOCATION 2023; 21:29. [PMID: 37143113 PMCID: PMC10158322 DOI: 10.1186/s12962-023-00439-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 04/15/2023] [Indexed: 05/06/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate the health and economic outcomes of a universal early intervention for parents and children, the Salut Programme, from birth to when the child completed five years of age. METHODS This study adopted a retrospective observational design using routinely collected linked register data with respect to both exposures and outcomes from Västerbotten county, in northern Sweden. Making use of a natural experiment, areas that received care-as-usual (non-Salut area) were compared to areas where the Programme was implemented after 2006 (Salut area) in terms of: (i) health outcomes, healthcare resource use and costs around pregnancy, delivery and birth, and (ii) healthcare resource use and related costs, as well as costs of care of sick child. We estimated total cumulative costs related to inpatient and specialised outpatient care for mothers and children, and financial benefits paid to mothers to stay home from work to care for a sick child. Two analyses were conducted: a matched difference-in difference analysis using the total sample and an analysis including a longitudinal subsample. RESULTS The longitudinal analysis on mothers who gave birth in both pre- and post-measure periods showed that mothers exposed to the Programme had on average 6% (95% CI 3-9%) more full-term pregnancies and 2% (95% CI 0.03-3%) more babies with a birth weight ≥ 2500 g, compared to mothers who had care-as-usual. Savings were incurred in terms of outpatient care costs for children of mothers in the Salut area ($826). The difference-in-difference analysis using the total sample did not result in any significant differences in health outcomes or cumulative resource use over time. CONCLUSIONS The Salut Programme achieved health gains, as a health promotion early intervention for children and parents, in terms of more full-term pregnancies and more babies with a birth weight ≥ 2500 g, at reasonable cost, and may lead to lower usage of outpatient care. Other indicators point towards positive effects, but the small sample size may have led to underestimation of true differences.
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Affiliation(s)
- Filipa Sampaio
- Department of Public Health and Caring Sciences, Uppsala University, BMC, Husargatan 3, Uppsala, 751 22, Sweden.
| | - Jenny Häggström
- Department of Statistics, Umeå School of Business and Economics, Umeå University, Umeå, Sweden
| | - Richard Ssegonja
- Department of Public Health and Caring Sciences, Uppsala University, BMC, Husargatan 3, Uppsala, 751 22, Sweden
- Department of Medical Sciences, Respiratory-, Allergy- and Sleep Medicine Research Unit, Uppsala University, Uppsala, Sweden
| | - Eva Eurenius
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
| | - Anneli Ivarsson
- Department of Epidemiology and Global Health, Umeå University, Umeå, Sweden
| | | | - Inna Feldman
- Department of Public Health and Caring Sciences, Uppsala University, BMC, Husargatan 3, Uppsala, 751 22, Sweden
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Liang R, Panelli DM, Stevenson DK, Rehkopf DH, Shaw GM. Associations between pregnancy glucose measurements and risk of preterm birth: a retrospective cohort study of commercially insured women in the United States from 2003 to 2021. Ann Epidemiol 2023; 81:31-39.e19. [PMID: 36905977 PMCID: PMC10195092 DOI: 10.1016/j.annepidem.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 02/16/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023]
Abstract
PURPOSE To investigate associations between glucose measurements during pregnancy and risk of preterm birth (PTB). METHODS Retrospective cohort study of commercially insured women with singleton live births in the United States from 2003 to 2021 using longitudinal medical claims, socioeconomic data, and eight glucose results from different fasting and post-load tests performed between 24 and 28 weeks of gestation for gestational diabetes screening. Risk ratios of PTB (<37 weeks) were estimated via Poisson regression for z-standardized glucose measures. Non-linear relationships for continuous glucose measures were examined via generalized additive models. RESULTS Elevations in all eight glucose measures were associated with increased risk (adjusted risk ratio point estimates: 1.05-1.19) of PTB for 196,377 women with non-fasting 50-g glucose challenge test (one glucose result), 31,522 women with complete 100-g, 3-hour fasting oral glucose tolerance test (OGTT) results (four glucose results), and 10,978 women with complete 75-g, 2-hour fasting OGTT results (three glucose results). Associations were consistent after adjusting for and stratifying by sociodemographic and clinical factors. Substantial non-linear relationships (U-, J-, and S-shaped) were observed between several glucose measurements and PTB. CONCLUSIONS Elevations in various glucose measures were linearly and non-linearly associated with increased PTB risk, even before diagnostic thresholds for gestational diabetes.
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Affiliation(s)
- Richard Liang
- Stanford University School of Medicine, Department of Epidemiology and Population Health, Alway Building, Stanford, CA.
| | - Danielle M Panelli
- Stanford University School of Medicine, Division of Maternal-Fetal Medicine and Obstetrics, Department of Obstetrics and Gynecology, Palo Alto, CA
| | - David K Stevenson
- Stanford University School of Medicine, Department of Pediatrics, Division of Neonatal and Developmental Medicine, March of Dimes Prematurity Research Center at Stanford University School of Medicine, Palo Alto, CA
| | - David H Rehkopf
- Stanford University School of Medicine, Department of Epidemiology and Population Health, Alway Building, Stanford, CA; Stanford University School of Medicine, Division of Primary Care and Population Health, Stanford, CA; Stanford University, Department of Sociology, Stanford, CA; Stanford University, Center for Population Health Sciences, Palo Alto, CA.
| | - Gary M Shaw
- Stanford University School of Medicine, Department of Pediatrics, Division of Neonatal and Developmental Medicine, March of Dimes Prematurity Research Center at Stanford University School of Medicine, Palo Alto, CA.
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Creswell L, Lindow SW, Monteith C, McNamee E, O'Gorman N, O'Connell MP. The duration of labor in spontaneous preterm deliveries: A retrospective observational study in a tertiary Irish maternity hospital. Eur J Obstet Gynecol Reprod Biol 2023; 285:110-114. [PMID: 37099860 DOI: 10.1016/j.ejogrb.2023.04.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 04/12/2023] [Accepted: 04/16/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND Preterm deliveries account for 10% of all births, and are the most important cause of neonatal mortality globally. Despite their frequency, there is a paucity of information known about usual patterns of preterm labor, as previous studies which critically defined the normal progression of labor excluded preterm gestations. OBJECTIVE To compare the durations of the first, second and third stages of spontaneous preterm labor in nulliparous and multiparous women at varying preterm gestations. METHODS A retrospective observational study was undertaken of women admitted in spontaneous preterm labor from January 2017 to December 2020 with viable singleton gestations between 24 and 36 + 6 weeks' gestation who then proceeded to have a vaginal delivery. There were 512 cases following exclusion of preterm inductions of labor, instrumental vaginal deliveries, provider-initiated pre-labor Caesarean sections and emergency intrapartum Caesarean sections. The data was then examined to determine our outcomes of interest including the durations of the first, second and third stages of preterm labor, analyzing results by parity and gestation. For comparison, we reviewed data of term spontaneous labors and spontaneous vaginal deliveries during the same study period, identifying 8339 cases. FINDINGS 97.6% of participants achieved a spontaneous cephalic vaginal delivery with the remainder undergoing an assisted breech birth. 5.7% of gestations delivered spontaneously between 24 + 0 and 27 + 6 weeks, with most births at gestations greater than 34 weeks (74%). The second stage duration (mean 15 vs 32 vs 32 mins respectively) was significantly different across the three gestation periods (p < 0.05), but was notably much quicker in extremely preterm labors. The first and third stage durations were similar between all gestational age groups with no statistically significant differences in results. There was a significant influence of parity on the first and second stages of labor, with multiparous women progressing more quickly than nulliparae (p < 0.001). CONCLUSION The duration of spontaneous preterm labor is described. Multiparous women progress more quickly in the first and second stages of preterm labor than nulliparous women.
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McGowan EC, McGrath M, Law A, O’Shea TM, Aschner JL, Blackwell CK, Fry RC, Ganiban JM, Higgins R, Margolis A, Sathyanarayana S, Taylor G, Alshawabkeh AN, Cordero JF, Spillane NT, Hudak ML, Camargo CA, Dabelea D, Dunlop AL, Elliott AJ, Ferrara AM, Talavera-Barber M, Singh AM, Karagas MR, Karr C, O’Connor TG, Paneth N, Wright RJ, Wright RO, Cowell W, Stanford JB, Bendixsen C, Lester BM. Health Care Utilization During the COVID-19 Pandemic Among Individuals Born Preterm. JAMA Netw Open 2023; 6:e2310696. [PMID: 37115545 PMCID: PMC10148204 DOI: 10.1001/jamanetworkopen.2023.10696] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 03/16/2023] [Indexed: 04/29/2023] Open
Abstract
Importance Limited data exist on pediatric health care utilization during the COVID-19 pandemic among children and young adults born preterm. Objective To investigate differences in health care use related to COVID-19 concerns during the pandemic among children and young adults born preterm vs those born at term. Design, Setting, and Participants In this cohort study, questionnaires regarding COVID-19 and health care utilization were completed by 1691 mother-offspring pairs from 42 pediatric cohorts in the National Institutes of Health Environmental Influences on Child Health Outcomes Program. Children and young adults (ages 1-18 years) in these analyses were born between 2003 and 2021. Data were recorded by the August 31, 2021, data-lock date and were analyzed between October 2021 and October 2022. Exposures Premature birth (<37 weeks' gestation). Main Outcomes and Measures The main outcome was health care utilization related to COVID-19 concerns (hospitalization, in-person clinic or emergency department visit, phone or telehealth evaluations). Individuals born preterm vs term (≥37 weeks' gestation) and differences among preterm subgroups of individuals (<28 weeks', 28-36 weeks' vs ≥37 weeks' gestation) were assessed. Generalized estimating equations assessed population odds for health care used and related symptoms, controlling for maternal age, education, and psychiatric disorder; offspring history of bronchopulmonary dysplasia (BPD) or asthma; and timing and age at COVID-19 questionnaire completion. Results Data from 1691 children and young adults were analyzed; among 270 individuals born preterm, the mean (SD) age at survey completion was 8.8 (4.4) years, 151 (55.9%) were male, and 193 (71.5%) had a history of BPD or asthma diagnosis. Among 1421 comparison individuals with term birth, the mean (SD) age at survey completion was 8.4 (2.4) years, 749 (52.7%) were male, and 233 (16.4%) had a history of BPD or asthma. Preterm subgroups included 159 individuals (58.5%) born at less than 28 weeks' gestation. In adjusted analyses, individuals born preterm had a significantly higher odds of health care utilization related to COVID-19 concerns (adjusted odds ratio [aOR], 1.70; 95% CI, 1.21-2.38) compared with term-born individuals; similar differences were also seen for the subgroup of individuals born at less than 28 weeks' gestation (aOR, 2.15; 95% CI, 1.40-3.29). Maternal history of a psychiatric disorder was a significant covariate associated with health care utilization for all individuals (aOR, 1.44; 95% CI, 1.17-1.78). Conclusions and Relevance These findings suggest that during the COVID-19 pandemic, children and young adults born preterm were more likely to have used health care related to COVID-19 concerns compared with their term-born peers, independent of a history of BPD or asthma. Further exploration of factors associated with COVID-19-related health care use may facilitate refinement of care models.
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Affiliation(s)
- Elisabeth C. McGowan
- The Warren Alpert School of Medicine, Brown University, Providence, Rhode Island
| | - Monica McGrath
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Andrew Law
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | | | - Judy L. Aschner
- Albert Einstein College of Medicine, New York, New York
- Hackensack University Medical Center and Hackensack Meridian School of Medicine, Hackensack, New Jersey
| | | | - Rebecca C. Fry
- The University of North Carolina at Chapel Hill, Chapel Hill
| | - Jody M. Ganiban
- George Washington University, Washington, District of Columbia
| | - Rosemary Higgins
- Department of Global and Community Health, College of Health and Human Sciences, George Mason University, Fort Myers, Florida
- Marieb College of Health and Human Services, Florida Gulf Coast University, Fort Myers
| | - Amy Margolis
- Columbia University Irving Medical Center, New York, New York
| | - Sheela Sathyanarayana
- University of Washington, Seattle
- Seattle Children’s Research Institute, Seattle, Washington
| | | | | | - José F. Cordero
- Department of Epidemiology and Biostatistics, University of Georgia, Athens
| | - Nicole T. Spillane
- Hackensack University Medical Center and Hackensack Meridian School of Medicine, Hackensack, New Jersey
| | - Mark L. Hudak
- Department of Pediatrics, University of Florida College of Medicine, Jacksonville
| | | | - Dana Dabelea
- Lifecourse Epidemiology of Adiposity and Diabetes Center, University of Colorado Anschutz Medical Campus, Aurora
| | | | | | | | - Maria Talavera-Barber
- Avera McKennan Hospital, Sioux Falls, South Dakota
- University Health Center, Avera Research Institute, Sioux Falls, South Dakota
| | - Anne Marie Singh
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, Madison
| | | | - Catherine Karr
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle
| | | | - Nigel Paneth
- Department of Epidemiology and Biostatistics, College of Human Medicine, Michigan State University, East Lansing
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing
| | - Rosalind J. Wright
- Institute for Exposomic Research, Icahn School of Medicine Mount Sinai, New York, New York
| | - Robert O. Wright
- Institute for Exposomic Research, Icahn School of Medicine Mount Sinai, New York, New York
| | - Whitney Cowell
- Department of Pediatrics, NYU Grossman School of Medicine, New York, New York
| | | | - Casper Bendixsen
- Marshfield Clinic Research Institute, Marshfield Clinic Health System, Marshfield, Wisconsin
| | - Barry M. Lester
- The Warren Alpert School of Medicine, Brown University, Providence, Rhode Island
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Sakowicz A, Allen E, Alvarado-Goldberg M, Grobman WA, Miller ES. Association Between Antenatal Depression Symptom Trajectories and Preterm Birth. Obstet Gynecol 2023; 141:810-817. [PMID: 36897146 DOI: 10.1097/aog.0000000000005125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 01/05/2023] [Indexed: 03/11/2023]
Abstract
OBJECTIVE To evaluate whether, among pregnant people referred for mental health care, improvement in antenatal depression symptoms before delivery was associated with a reduction in preterm birth. METHODS This retrospective cohort study included all pregnant people referred to a perinatal collaborative care program for mental health care who delivered between March 2016 and March 2021. Those referred to the collaborative care program had access to subspecialty mental health treatment, including psychiatric consultation, psychopharmacotherapy, and psychotherapy. Depression symptoms were monitored with the self-reported PHQ-9 (Patient Health Questionnarie-9) screens in a patient registry. Antenatal depression trajectories were determined by comparing the earliest prenatal PHQ-9 score after collaborative care referral with the score closest to delivery. Trajectories were categorized as improved, stable, or worsened according to whether PHQ-9 scores changed by at least 5 points. Bivariable analyses were performed. A propensity score was generated to control for confounders that were significantly different on bivariable analyses according to trajectories. This propensity score was then included in multivariable models. RESULTS Of the 732 pregnant people included, 523 (71.4%) had mild or more severe depressive symptoms (PHQ-9 score 5 or higher) on their initial screen. Antenatal depression symptoms improved in 256 (35.0%), remained stable in 437 (59.7%), and worsened in 39 (5.3%); the corresponding incidence of preterm birth was 12.5%, 14.0%, and 30.8%, respectively ( P =.009). Compared with those with a worsened trajectory, pregnant people who had an improved antenatal depression symptom trajectory had a significantly decreased odds of preterm birth (adjusted odds ratio 0.37, 95% CI 0.15-0.89). CONCLUSION Compared with worsened symptoms, an improved antenatal depression symptom trajectory is associated with decreased odds of preterm birth for pregnant people referred for mental health care. These data further underscore the public health importance of incorporating mental health care into routine obstetric care.
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Affiliation(s)
- Allie Sakowicz
- Department of Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, North Carolina; the Northwestern University Feinberg School of Medicine and the Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Northwestern University Feinberg School of Medicine, Chicago, Illinois; and the Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, The Ohio State University, Columbus, Ohio
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Ayele TB, Moyehodie YA. Prevalence of preterm birth and associated factors among mothers who gave birth in public hospitals of east Gojjam zone, Ethiopia. BMC Pregnancy Childbirth 2023; 23:204. [PMID: 36964535 PMCID: PMC10037778 DOI: 10.1186/s12884-023-05517-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 03/14/2023] [Indexed: 03/26/2023] Open
Abstract
BACKGROUNDS Preterm birth is defined as babies born alive before 37 weeks of pregnancy or fewer than 259 days since the first day of a woman's last menstrual period. Globally, 14.84 million babies were preterm births. Preterm infants are at risk for specific diseases related to the immaturity of various organ systems. This study aimed to assess the prevalence of preterm birth and associated factors among mothers who gave birth in public hospitals of east Gojjam zone, Ethiopia. METHODS An institutional-based cross-sectional study was conducted from April 1 up to June 30, 2021, in public hospitals in the east Gojjam zone. Systematic random sampling was used. Data were collected through structured questionnaires, patient interviews and patient card reviews. We used binary logistic regression analysis with 95% CI and P-value < 0.05 to identify the significant factors with preterm birth. RESULTS Out of 615 mothers, 13.2% gave a preterm birth. Antenatal care (AOR = 2.87; 95% CI = (1.67, 5.09)), educational status of mother (AOR = 2.79; 95% CI = (1.27, 6.67)), husband educational status(AOR = 2.11; 95% CI = (1.10, 4.18)), Average monthly family income(AOR = 1.95; 95% CI = (1.05, 3.75)),family size(AOR = 0.15; 95% CI = (0.03, 0.67)), multifetal gestation (AOR = 3.30; 95% CI = (1.29, 8.69), having Premature Rupture Of Membrane (AOR = 6.46; 95% CI= (2.52, 18.24)), history of chronic illness (AOR = 3.94; 95% CI = (1.67, 9.45)), being HIV positive(AOR = 6.99; 95% CI= (1.13, 44.65)), Ante-Partum Hemorrhage (AOR = 3.62; 95% CI= (1.12, 12.59)), pregnancy Induced Hypertension (AOR = 3.61; 95% CI= (1.19, 11.84)), mode of delivery (AOR = 7.16; 95% CI = (2.09, 29.29)), and onset of labor (AOR = 0.10; 95% CI = (0.03, 0.29)) were found to be significantly associated with preterm birth. CONCLUSIONS antenatal care, educational status of the mother, husband's educational status, family income, family size, multifetal gestation, Premature Rupture of the membrane, history of chronic illness, being HIV positive, Ante-Partum Hemorrhage, pregnancy Induced Hypertension, mode of delivery, and the onset of labor were found to be significantly associated with preterm birth. To minimize the proportion of preterm birth focusing on this important variables, timely identification of obstetric complications, strengthening early screening of HIV and high-risk pregnancies like multiple gestations, PIH and APH were important.
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Affiliation(s)
- Tafere Birlie Ayele
- Department of Integrated Emergency Surgery and Obstetrics, College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia
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Kaempf JW, Moore GP. Extremely premature birth bioethical decision-making supported by dialogics and pragmatism. BMC Med Ethics 2023; 24:9. [PMID: 36774482 PMCID: PMC9922460 DOI: 10.1186/s12910-023-00887-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 01/26/2023] [Indexed: 02/13/2023] Open
Abstract
Moral values in healthcare range widely between interest groups and are principally subjective. Disagreements diminish dialogue and marginalize alternative viewpoints. Extremely premature births exemplify how discord becomes unproductive when conflicts of interest, cultural misunderstanding, constrained evidence review, and peculiar hierarchy compete without the balance of objective standards of reason. Accepting uncertainty, distributing risk fairly, and humbly acknowledging therapeutic limits are honorable traits, not relativism, and especially crucial in our world of constrained resources. We think dialogics engender a mutual understanding that: i) transitions beliefs beyond bias, ii) moves conflict toward pragmatism (i.e., the truth of any position is verified by subsequent experience), and iii) recognizes value pluralism (i.e., human values are irreducibly diverse, conflicting, and ultimately incommensurable). This article provides a clear and useful Point-Counterpoint of extreme prematurity controversies, an objective neurodevelopmental outcomes table, and a dialogics exemplar to cultivate shared empathetic comprehension, not to create sides from which to choose. It is our goal to bridge the understanding gap within and between physicians and bioethicists. Dialogics accept competing relational interests as human nature, recognizing that ultimate solutions satisfactory to all are illusory, because every choice has downside. Nurturing a collective consciousness via dialogics and pragmatism is congenial to integrating objective evidence review and subjective moral-cultural sentiments, and is that rarest of ethical constructs, a means and an end.
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Affiliation(s)
- Joseph W. Kaempf
- grid.415337.70000 0004 0456 8744Providence St. Vincent Medical Center, Women and Children’s Services, 9205 SW Barnes Road, Portland, OR 97225 USA
| | - Gregory P. Moore
- grid.412687.e0000 0000 9606 5108Department of Obstetrics, Gynecology, and Newborn Care, The Ottawa Hospital – General Campus, 501 Smyth Road, Box 806, Ottawa, ON K1H 8L6 Canada
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Schiller EA, Cohen K, Lin X, El-Khawam R, Hanna N. Extracellular Vesicle-microRNAs as Diagnostic Biomarkers in Preterm Neonates. Int J Mol Sci 2023; 24:2622. [PMID: 36768944 PMCID: PMC9916767 DOI: 10.3390/ijms24032622] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/24/2023] [Accepted: 01/25/2023] [Indexed: 02/03/2023] Open
Abstract
Neonates born prematurely (<37 weeks of gestation) are at a significantly increased risk of developing inflammatory conditions associated with high mortality rates, including necrotizing enterocolitis, bronchopulmonary dysplasia, and hypoxic-ischemic brain damage. Recently, research has focused on characterizing the content of extracellular vesicles (EVs), particularly microRNAs (miRNAs), for diagnostic use. Here, we describe the most recent work on EVs-miRNAs biomarkers discovery for conditions that commonly affect premature neonates.
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Affiliation(s)
- Emily A. Schiller
- Department of Foundational Medicine, New York University Long Island School of Medicine, Mineola, NY 11501, USA
| | - Koral Cohen
- Department of Foundational Medicine, New York University Long Island School of Medicine, Mineola, NY 11501, USA
| | - Xinhua Lin
- Department of Foundational Medicine, New York University Long Island School of Medicine, Mineola, NY 11501, USA
| | - Rania El-Khawam
- Department of Pediatrics, Division of Neonatology, New York University Langone Long Island Hospital, Mineola, NY 11501, USA
| | - Nazeeh Hanna
- Department of Foundational Medicine, New York University Long Island School of Medicine, Mineola, NY 11501, USA
- Department of Pediatrics, Division of Neonatology, New York University Langone Long Island Hospital, Mineola, NY 11501, USA
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Song IS, Choi ES, Kim ES, Hwang Y, Lee KS, Ahn KH. Associations of Preterm Birth with Dental and Gastrointestinal Diseases: Machine Learning Analysis Using National Health Insurance Data. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:1732. [PMID: 36767099 PMCID: PMC9914760 DOI: 10.3390/ijerph20031732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/15/2023] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND This study uses machine learning with large-scale population data to assess the associations of preterm birth (PTB) with dental and gastrointestinal diseases. METHODS Population-based retrospective cohort data came from Korea National Health Insurance claims for 124,606 primiparous women aged 25-40 and delivered in 2017. The 186 independent variables included demographic/socioeconomic determinants, disease information, and medication history. Machine learning analysis was used to establish the prediction model of PTB. Random forest variable importance was used for identifying major determinants of PTB and testing its associations with dental and gastrointestinal diseases, medication history, and socioeconomic status. RESULTS The random forest with oversampling data registered an accuracy of 84.03, and the areas under the receiver-operating-characteristic curves with the range of 84.03-84.04. Based on random forest variable importance with oversampling data, PTB has strong associations with socioeconomic status (0.284), age (0.214), year 2014 gastroesophageal reflux disease (GERD) (0.026), year 2015 GERD (0.026), year 2013 GERD (0.024), progesterone (0.024), year 2012 GERD (0.023), year 2011 GERD (0.021), tricyclic antidepressant (0.020) and year 2016 infertility (0.019). For example, the accuracy of the model will decrease by 28.4%, 2.6%, or 1.9% if the values of socioeconomic status, year 2014 GERD, or year 2016 infertility are randomly permutated (or shuffled). CONCLUSION By using machine learning, we established a valid prediction model for PTB. PTB has strong associations with GERD and infertility. Pregnant women need close surveillance for gastrointestinal and obstetric risks at the same time.
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Affiliation(s)
- In-Seok Song
- Department of Oral and Maxillofacial Surgery, Korea University College of Medicine, Korea University Anam Hospital, Seoul 02841, Republic of Korea
| | - Eun-Saem Choi
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Korea University Anam Hospital, Seoul 02841, Republic of Korea
| | - Eun Sun Kim
- Department of Gastroenterology, Korea University College of Medicine, Korea University Anam Hospital, Seoul 02841, Republic of Korea
| | - Yujin Hwang
- Department of Statistics, Korea University College of Political Science & Economics, Korea University Anam Hospital, Seoul 02841, Republic of Korea
| | - Kwang-Sig Lee
- AI Center, Korea University College of Medicine, Korea University Anam Hospital, Seoul 02841, Republic of Korea
| | - Ki Hoon Ahn
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Korea University Anam Hospital, Seoul 02841, Republic of Korea
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Hemingway M, Raju M, Vora N, Raju V, Mallett LH, Govande V. Improving delivery room and admission efficiency and outcomes for infants < 32 weeks: ELGAN+ (Extremely Low Gestational Age Neonate). J Neonatal Perinatal Med 2022; 16:33-37. [PMID: 36591661 DOI: 10.3233/npm-210881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To evaluate the implementation of a systematic approach to improve the resuscitation, stabilization, and admission of infants < 32 weeks gestation and also to ascertain its effect on organization, efficiency, and clinical outcomes during hospitalization. METHODS Retrospective study involving a multidisciplinary team with checklists, role assignment, equipment organization, step by step protocol, and real time documentation for the care of infants < 32 weeks gestation in the delivery room to the neonatal intensive care unit. Pre-data collection (cases) period was from Aug, 2015 to July, 2017, and post-data collection(controls) period was from Aug, 2017 to Aug, 2019. RESULTS 337 infants were included (179 cases; 158 controls). Increase surfactant use in the resuscitation room (41% vs. 27%, p = 0.007) and reduction in median time to administer surfactant (34 minutes (range, 6-120) vs. 74 minutes (range, 7-120), p = 0.001) observed in control-group. There was a significant reduction in incidence of bronchopulmonary dysplasia (27% vs. 39%), intraventricular hemorrhage (11% vs. 17%), severe retinopathy of prematurity (3% vs. 9%), and necrotizing enterocolitis (4% vs. 6%), however these results were not statistically significant after controlling for severity of illness. CONCLUSIONS A systematic approach to the care of infants < 32 weeks gestation significantly improved mortality rates and reduced rates of comorbidities.
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Affiliation(s)
- M Hemingway
- Department of Neonatology, Baylor Scott and White Health, Temple, Texas, USA
| | - M Raju
- Department of Neonatology, Baylor Scott and White Health, Temple, Texas, USA
| | - N Vora
- Department of Neonatology, Baylor Scott and White Health, Temple, Texas, USA
| | - V Raju
- Department of Neonatology, Baylor Scott and White Health, Temple, Texas, USA
| | - L H Mallett
- Department of Neonatology, Baylor Scott and White Health, Temple, Texas, USA
| | - V Govande
- Department of Neonatology, Baylor Scott and White Health, Temple, Texas, USA
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Mensah NA, Fassett MJ, Shi JM, Kawatkar AA, Xie F, Chiu VY, Yeh M, Avila CC, Khadka N, Sacks DA, Getahun D. Examining recent trends in spontaneous and iatrogenic preterm birth across race and ethnicity in a large managed care population. Am J Obstet Gynecol 2022:S0002-9378(22)02176-7. [PMID: 36403861 DOI: 10.1016/j.ajog.2022.11.1288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 11/10/2022] [Accepted: 11/14/2022] [Indexed: 11/21/2022]
Abstract
BACKGROUND For the past several decades, epidemiological studies originating from the United States have consistently reported increasing rates of preterm birth (PTB). Despite the implementation of several clinical and public health interventions to reduce PTB rates, it remains the leading cause of infant morbidity and mortality in the United States and around the world. OBJECTIVE This study aimed to examine recent trends in preterm birth and its clinical subtypes by maternal race and ethnicity among singleton births. STUDY DESIGN Kaiser Permanente Southern California electronic health records for all singleton births between 2009 and 2020 (n=427,698) were used to examine preterm birth trends and their subtypes (spontaneous and iatrogenic preterm births). Data on preterm labor triage extracted from electronic health records using natural language processing were used to define preterm birth subtypes. Maternal race and ethnicity are categorized as non-Hispanic White, non-Hispanic Black, Hispanic, and non-Hispanic Asian or Pacific Islander. Multiple logistic regression was used to quantify the linear trend for preterm birth and its subtypes. Racial and ethnic trends were further examined by considering statistical interactions and stratifications. RESULTS From 2009 to 2020, the overall preterm birth rate decreased by 9.12% (from 8.04% to 7.31%; P<.001). The rates decreased by 19.29% among non-Hispanic Whites (from 7.23% to 5.83%; P<.001), 6.15% among Hispanics (from 7.82% to 7.34%; P=.036), and 12.60% among non-Hispanic Asian or Pacific Islanders (from 8.90% to 7.78%; P<.001), whereas a nonsignificantly increased preterm birth rate (8.45%) was observed among non-Hispanic Blacks (from 9.91% to 10.75%; P=.103). Between 2009 and 2020, overall spontaneous preterm birth rates decreased by 28.85% (from 5.75% to 4.09%; P<.001). However, overall iatrogenic preterm birth rates increased by 40.45% (from 2.29% to 3.22%; p<.001). Spontaneous preterm birth rates decreased by 34.73% among non-Hispanic Whites (from 5.44% to 3.55%; P<.001), 19.75% among non-Hispanic Blacks (from 6.82% to 5.47%; P<.001), 22.96% among Hispanics (from 5.55% to 4.28%; P<.001), and 28.19% among non-Hispanic Asian or Pacific Islanders (from 6.50% to 4.67%; P<.001). Iatrogenic preterm birth rates increased by 52.42% among non-Hispanic Whites (from 1.88% to 2.61%; P<.001), 107.89% among non-Hispanic Blacks (from 3.18% to 6.13%; P<.001), 46.88% among Hispanics (from 2.29% to 3.26%; P<.001), and 42.21% among non-Hispanic Asian or Pacific Islanders (from 2.45% to 3.44%; P<.001). CONCLUSION The overall preterm birth rate decreased over time and was driven by a decrease in the spontaneous preterm birth rate. There is racial and ethnic variability in the rates of spontaneous preterm birth and iatrogenic preterm birth. The observed increase in iatrogenic preterm birth among all racial and ethnic groups, especially non-Hispanic Blacks, is disconcerting and needs further investigation.
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Affiliation(s)
- Nana A Mensah
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Michael J Fassett
- Department of Obstetrics and Gynecology, Kaiser Permanente West Los Angeles Medical Center, Los Angeles, CA; Department of Clinical Science, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA
| | - Jiaxiao M Shi
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Aniket A Kawatkar
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Fagen Xie
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Vicki Y Chiu
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Meiyu Yeh
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Chantal C Avila
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Nehaa Khadka
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - David A Sacks
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA; Department of Obstetrics and Gynecology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Darios Getahun
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA; Department of Health Systems Science, Kaiser Permanente Bernard J. Tyson School of Medicine, Pasadena, CA.
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Best KP, Gibson RA, Makrides M. ISSFAL statement number 7 - Omega-3 fatty acids during pregnancy to reduce preterm birth. Prostaglandins Leukot Essent Fatty Acids 2022; 186:102495. [PMID: 36228573 DOI: 10.1016/j.plefa.2022.102495] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 12/29/2022]
Abstract
Globally, preterm birth is the leading cause of death in children under the age of 5 years and survivors may suffer life-long consequences. Following many years of investigation, there is strong evidence that a proportion of preterm births can be prevented by increasing maternal dietary omega-3 long chain polyunsaturated fatty acid (LCPUFA) intake during pregnancy. This Statement provides a synthesis of contemporary evidence on the role of omega-3 LCPUFA on prevention of preterm birth and is designed to provide fatty acid-specific knowledge and guidance for medical practitioners, midwives, health services, professional bodies and policy makers to consider for their contextual situations. The evidence synthesis, which underpins this statement, is based on the 2018 Cochrane systematic review with supplemental evidence from RCTs completed since that time as well as other systematic reviews. Heterogeneity between studies was explored to understand how the effect of omega-3 supplementation may vary in different population groups and by dose and type of omega-3 supplementation. Most trials were conducted in upper-middle or high-income countries and the evidence are most applicable in those settings. The evidence synthesis confirmed that omega-3 LCPUFA, particularly docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), have an important role to play in determining gestational length in singleton pregnancies. Adequate intake of omega-3 LCPUFA in early pregnancy, consistent with existing nutritional guidelines, is associated with a lower risk of preterm and early preterm births for women with singleton pregnancies. Therefore, women with adequate omega-3 intakes in early pregnancy should maintain these intakes. Women who are low in omega-3 fatty acids will benefit most from omega-3 LCPUFA supplementation to reduce their risk of early birth. In such cases supplementation with a total of about 1000 mg of DHA plus EPA is effective at reducing risk of early birth, preferably with supplementation commencing before 20 weeks' gestation.
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Affiliation(s)
- K P Best
- South Australian Health and Medical Research Institute, SAHMRI Women and Kids, North Terrace, Adelaide SA Australia; School of Medicine, University of Adelaide, North Terrace, Adelaide SA Australia
| | - R A Gibson
- South Australian Health and Medical Research Institute, SAHMRI Women and Kids, North Terrace, Adelaide SA Australia; School of Agriculture, Food and Wine, University of Adelaide, North Terrace, Adelaide SA Australia
| | - M Makrides
- South Australian Health and Medical Research Institute, SAHMRI Women and Kids, North Terrace, Adelaide SA Australia; School of Medicine, University of Adelaide, North Terrace, Adelaide SA Australia.
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Turczynski C, Dodd A, Urlakis MA. Assisted Reproductive Technology and Natural Law: How Seven Years as an Embryologist Revealed IVF's Disordered Approach to Patient Care. LINACRE QUARTERLY 2022; 89:388-403. [PMID: 36518716 PMCID: PMC9743042 DOI: 10.1177/00243639221128393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
This article is a case study illuminating the experience of a cradle Catholic who pursued a career in the field of Assisted Reproductive Technology (ART) as a laboratory director and embryologist. Twenty years after leaving the field, the observations leading to the crisis of conscience are further amplified by the reports of social, legal, ethical, and medical consequences of the technology. These consequences are explored in detail and can serve as a mini-review of the published scientific literature describing the obstetrical complications, peri-natal outcomes, and the long-term health effects on the offspring. This paper provides the documented evidence that can be used by the religious and medical community for shepherding the flock. The disordered approach to patient care is evidenced by five serious consequences resulting from the use of the technology. These include multiple pregnancy and selective reduction, abandoned and discarded embryos, adverse health effects to the women and children, legal and ethical problems, and human experimentation. An explanation for the adverse consequences can be found by exploring and applying the principles of Natural Law. Natural Law, as embraced by the Catholic Church, can be used as a starting point for conversion of heart for many who struggle with the immorality of ART. Deterring use of the technology coupled with increased motivation by scientist and health professionals to pursue restorative approaches within a moral framework offer our best solution to the treatment of infertility. Natural Law and the consequences of violating it provide evidence that science and medicine should not be practiced in a vacuum void of ethical and moral boundaries grounded in divine Wisdom.
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Affiliation(s)
| | | | - Mary Anne Urlakis
- Dignitas Personae Institute for Nascent Human Life, Inc., Colgate, WI, USA
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Du Berry C, Nesci C, Cheong JL, FitzGerald T, Mainzer R, Ranganathan S, Doyle LW, Vrijlandt EJ, Welsh L. Long-term expiratory airflow of infants born moderate-late preterm: A systematic review and meta-analysis. EClinicalMedicine 2022; 52:101597. [PMID: 35923430 PMCID: PMC9340512 DOI: 10.1016/j.eclinm.2022.101597] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/12/2022] [Accepted: 07/13/2022] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Moderate-late preterm (MLP; 32 to <37 weeks' gestation) birth is associated with reduced expiratory airflow during child, adolescent and adult years. However, some studies have reported only minimal airflow limitation and hence it is unclear if clinical assessment in later life is warranted. Our aim was to compare maximal expiratory airflow in children and adults born MLP with term-born controls, and with expected norms. METHODS We systematically reviewed studies reporting z-scores for spirometric indices (forced expired volume in 1 second [FEV1], forced vital capacity [FVC], FEV1/FVC ratio and forced expiratory flow at 25-75% of FVC [FEF25-75%]) from participants born MLP aged five years or older, with or without a term-born control group from 4 databases (MEDLINE, CINAHL, Embase, Emcare). Publications were searched for between the 22nd of September 2021 to the 29th of September 2021. A meta-analysis of eligible studies was conducted using a random effects model. The study protocol was published in PROSPERO (CRD #42021281518). FINDINGS We screened 4970 articles and identified 18 relevant studies, 15 of which were eligible for meta-analysis (8 with term-born controls and 7 without). Compared with controls, MLP participants had lower z-scores (mean difference [95% confidence interval] I2) for FEV1: -0.22 [-0.35, -0.09] 49.3%, FVC: -0.23 [-0.4, -0.06] 71.8%, FEV1/FVC: -0.11 [-0.20 to -0.03] 9.3% and FEF25-75%: -0.27 [-0.41 to -0.12] 21.9%. Participants born MLP also had lower z-scores, on average, when compared with a z-score of 0 (mean [95% CI] I2) for FEV1: -0.26 [-0.40 to -0.11] 85.2%, FVC: -0.18 [-0.34 to -0.02] 88.3%, FEV1/FVC: -0.24 [-0.43 to -0.05] 90.5% and FEF25-75%: -0.33 [-0.54 to -0.20] 94.7%. INTERPRETATION Those born MLP had worse expiratory airflows than those born at term, and compared with norms, although reductions were modest. Clinicians should be aware that children and adults born MLP may be at higher risk of obstructive lung disease compared with term-born peers. FUNDING This work is supported by grants from the National Health and Medical Research Council (Centre of Research Excellence #1153176, Project grant #1161304); Medical Research Future Fund (Career Development Fellowship to J.L.Y Cheong #1141354) and from the Victorian Government's Operational Infrastructure Support Programme. C. Du Berry's PhD candidature is supported by the Melbourne Research Scholarship and the Centre of Research Excellence in Newborn Medicine.
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Affiliation(s)
- Cassidy Du Berry
- Department of Paediatrics, The University of Melbourne, Australia
- Respiratory Group, Infection and Immunity, Murdoch Children's Research Institute, Parkville, Australia
- Department of Respiratory Medicine, The Royal Children's Hospital Melbourne, Australia
- Corresponding author at: Department of Paediatrics, The University of Melbourne, 50 Flemington Road, Parkville, Victoria, 3052, Australia.
| | - Christopher Nesci
- Department of Respiratory Medicine, The Royal Children's Hospital Melbourne, Australia
| | - Jeanie L.Y. Cheong
- Department of Obstetrics and Gynaecology, The University of Melbourne, Australia
- Victorian Infant Brain Studies Group, Clinical Sciences, Murdoch Children's Research Institute, Parkville, Australia
- Newborn Research, The Royal Women's Hospital Melbourne, Australia
| | - Tara FitzGerald
- Department of Physiotherapy, The University of Melbourne, Australia
- Victorian Infant Brain Studies Group, Clinical Sciences, Murdoch Children's Research Institute, Parkville, Australia
| | - Rheanna Mainzer
- Department of Paediatrics, The University of Melbourne, Australia
- Respiratory Group, Infection and Immunity, Murdoch Children's Research Institute, Parkville, Australia
- Clinical Epidemiology and Biostatistics Unit, Population Health, Murdoch Children's Research Institute, Australia
| | - Sarath Ranganathan
- Department of Paediatrics, The University of Melbourne, Australia
- Respiratory Group, Infection and Immunity, Murdoch Children's Research Institute, Parkville, Australia
- Department of Respiratory Medicine, The Royal Children's Hospital Melbourne, Australia
| | - Lex W. Doyle
- Department of Paediatrics, The University of Melbourne, Australia
- Department of Obstetrics and Gynaecology, The University of Melbourne, Australia
- Victorian Infant Brain Studies Group, Clinical Sciences, Murdoch Children's Research Institute, Parkville, Australia
- Newborn Research, The Royal Women's Hospital Melbourne, Australia
| | - Elianne J.L.E. Vrijlandt
- Department of Pediatric Pulmonology and Pediatric Allergy, Beatrix Children's Hospital, and the Groningen Research Institute for Asthma and COPD, the Netherlands
- University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Liam Welsh
- Department of Paediatrics, The University of Melbourne, Australia
- Respiratory Group, Infection and Immunity, Murdoch Children's Research Institute, Parkville, Australia
- Department of Respiratory Medicine, The Royal Children's Hospital Melbourne, Australia
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Nieto-del-Amor F, Prats-Boluda G, Garcia-Casado J, Diaz-Martinez A, Diago-Almela VJ, Monfort-Ortiz R, Hao D, Ye-Lin Y. Combination of Feature Selection and Resampling Methods to Predict Preterm Birth Based on Electrohysterographic Signals from Imbalance Data. SENSORS 2022; 22:s22145098. [PMID: 35890778 PMCID: PMC9319575 DOI: 10.3390/s22145098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 02/01/2023]
Abstract
Due to its high sensitivity, electrohysterography (EHG) has emerged as an alternative technique for predicting preterm labor. The main obstacle in designing preterm labor prediction models is the inherent preterm/term imbalance ratio, which can give rise to relatively low performance. Numerous studies obtained promising preterm labor prediction results using the synthetic minority oversampling technique. However, these studies generally overestimate mathematical models’ real generalization capacity by generating synthetic data before splitting the dataset, leaking information between the training and testing partitions and thus reducing the complexity of the classification task. In this work, we analyzed the effect of combining feature selection and resampling methods to overcome the class imbalance problem for predicting preterm labor by EHG. We assessed undersampling, oversampling, and hybrid methods applied to the training and validation dataset during feature selection by genetic algorithm, and analyzed the resampling effect on training data after obtaining the optimized feature subset. The best strategy consisted of undersampling the majority class of the validation dataset to 1:1 during feature selection, without subsequent resampling of the training data, achieving an AUC of 94.5 ± 4.6%, average precision of 84.5 ± 11.7%, maximum F1-score of 79.6 ± 13.8%, and recall of 89.8 ± 12.1%. Our results outperformed the techniques currently used in clinical practice, suggesting the EHG could be used to predict preterm labor in clinics.
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Affiliation(s)
- Félix Nieto-del-Amor
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, 46022 Valencia, Spain; (F.N.-d.-A.); (J.G.-C.); (A.D.-M.); (Y.Y.-L.)
| | - Gema Prats-Boluda
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, 46022 Valencia, Spain; (F.N.-d.-A.); (J.G.-C.); (A.D.-M.); (Y.Y.-L.)
- Correspondence:
| | - Javier Garcia-Casado
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, 46022 Valencia, Spain; (F.N.-d.-A.); (J.G.-C.); (A.D.-M.); (Y.Y.-L.)
| | - Alba Diaz-Martinez
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, 46022 Valencia, Spain; (F.N.-d.-A.); (J.G.-C.); (A.D.-M.); (Y.Y.-L.)
| | | | - Rogelio Monfort-Ortiz
- Servicio de Obstetricia, H.U.P. La Fe, 46026 Valencia, Spain; (V.J.D.-A.); (R.M.-O.)
| | - Dongmei Hao
- Faculty of Environment and Life, Beijing University of Technology, Beijing International Science and Technology Cooperation Base for Intelligent Physiological Measurement and Clinical Transformation, Beijing 100124, China;
| | - Yiyao Ye-Lin
- Centro de Investigación e Innovación en Bioingeniería, Universitat Politècnica de València, 46022 Valencia, Spain; (F.N.-d.-A.); (J.G.-C.); (A.D.-M.); (Y.Y.-L.)
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Jang EJ, Kim YJ, Hwang HS, Yee J, Gwak HS. Associations of GNAS and RGS Gene Polymorphisms with the Risk of Ritodrine-Induced Adverse Events in Korean Women with Preterm Labor: A Cohort Study. Pharmaceutics 2022; 14:pharmaceutics14061220. [PMID: 35745791 PMCID: PMC9227008 DOI: 10.3390/pharmaceutics14061220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 02/04/2023] Open
Abstract
Ritodrine, a β2-adrenergic receptor agonist, is among most commonly prescribed tocolytic agents. This study aimed to evaluate the associations of single nucleotide polymorphisms in GNAS, RGS2, and RGS5 with the risk of ritodrine-induced adverse events (AEs) and develop a risk scoring system to identify high-risk patients. This is the prospective cohort study conducted at the Ewha Woman’s University Mokdong Hospital between January 2010 and October 2016. Pregnant women were included if they were treated with ritodrine for preterm labor with regular uterine contractions (at least 3 every 10 min) and cervical dilation. A total of 6, 3, and 5 single nucleotide polymorphisms (SNPs) of GNAS, RGS2, and RGS5 genes were genotyped and compared in patients with and without ritodrine-induced AEs. A total of 163 patients were included in this study. After adjusting confounders, GNAS rs3730168 (per-allele odds ratio (OR): 2.1; 95% confidence interval (95% CI): 1.0–4.3) and RGS2 rs1152746 (per-allele OR: 2.6, 95% CI: 1.1–6.5) were significantly associated with ritodrine-induced AEs. According to the constructed risk scoring models, patients with 0, 1, 2, 3, 4, and 5 points showed 0%, 13%, 19%, 31%, 46%, and 100% risks of AEs. This study suggested that GNAS and RGS2 polymorphisms could affect the risk of AEs in patients treated with ritodrine.
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Affiliation(s)
- Eun-Jeong Jang
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea;
| | - Young-Ju Kim
- Department of Obstetrics and Gynecology, Ewha Womans University School of Medicine, Seoul 07985, Korea;
| | - Han-Sung Hwang
- Department of Obstetrics and Gynecology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05030, Korea;
| | - Jeong Yee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea;
- Correspondence: (J.Y.); (H.-S.G.); Tel.: +82-2-3277-3052 (J.Y.); +82-2-3277-4376 (H.-S.G.); Fax: +82-2-3277-3051 (J.Y. & H.-S.G.)
| | - Hye-Sun Gwak
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea;
- Correspondence: (J.Y.); (H.-S.G.); Tel.: +82-2-3277-3052 (J.Y.); +82-2-3277-4376 (H.-S.G.); Fax: +82-2-3277-3051 (J.Y. & H.-S.G.)
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Burchard J, Saade GR, Boggess KA, Markenson GR, Iams JD, Coonrod DV, Pereira LM, Hoffman MK, Polpitiya AD, Treacy R, Fox AC, Randolph TL, Fleischer TC, Dufford MT, Garite TJ, Critchfield GC, Boniface JJ, Kearney PE. Better Estimation of Spontaneous Preterm Birth Prediction Performance through Improved Gestational Age Dating. J Clin Med 2022; 11:jcm11102885. [PMID: 35629011 PMCID: PMC9146613 DOI: 10.3390/jcm11102885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/11/2022] [Accepted: 05/18/2022] [Indexed: 02/05/2023] Open
Abstract
The clinical management of pregnancy and spontaneous preterm birth (sPTB) relies on estimates of gestational age (GA). Our objective was to evaluate the effect of GA dating uncertainty on the observed performance of a validated proteomic biomarker risk predictor, and then to test the generalizability of that effect in a broader range of GA at blood draw. In a secondary analysis of a prospective clinical trial (PAPR; NCT01371019), we compared two GA dating categories: both ultrasound and dating by last menstrual period (LMP) (all subjects) and excluding dating by LMP (excluding LMP). The risk predictor's performance was observed at the validated risk predictor threshold both in weeks 191/7-206/7 and extended to weeks 180/7-206/7. Strict blinding and independent statistical analyses were employed. The validated biomarker risk predictor showed greater observed sensitivity of 88% at 75% specificity (increases of 17% and 1%) in more reliably dated (excluding-LMP) subjects, relative to all subjects. Excluding dating by LMP significantly improved the sensitivity in weeks 191/7-206/7. In the broader blood draw window, the previously validated risk predictor threshold significantly stratified higher and lower risk of sPTB, and the risk predictor again showed significantly greater observed sensitivity in excluding-LMP subjects. These findings have implications for testing the performance of models aimed at predicting PTB.
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Affiliation(s)
- Julja Burchard
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
- Correspondence: ; Tel.: +1-801-990-0597
| | - George R. Saade
- Department of Obstetrics & Gynecology, The University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Kim A. Boggess
- Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, University of North Carolina, Chapel Hill, NC 27599, USA;
| | - Glenn R. Markenson
- Maternal Fetal Medicine, Boston University School of Medicine, Boston, MA 02118, USA;
| | - Jay D. Iams
- Department of Obstetrics & Gynecology, The Ohio State University, Columbus, OH 43210, USA;
| | - Dean V. Coonrod
- Department of Obstetrics and Gynecology, Valleywise Health, Phoenix, AZ 85008, USA;
| | - Leonardo M. Pereira
- Division of Maternal-Fetal Medicine, Oregon Health & Science University, Portland, OR 97239, USA;
| | - Matthew K. Hoffman
- Department of Obstetrics & Gynecology, Christiana Care Health System, Newark, DE 19718, USA;
| | - Ashoka D. Polpitiya
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Ryan Treacy
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Angela C. Fox
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Todd L. Randolph
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Tracey C. Fleischer
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Max T. Dufford
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Thomas J. Garite
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Gregory C. Critchfield
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - J. Jay Boniface
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Paul E. Kearney
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (A.D.P.); (R.T.); (A.C.F.); (T.L.R.); (T.C.F.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
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MacDorman MF, Thoma M, Declercq E, Howell EA. The relationship between obstetrical interventions and the increase in U.S. preterm births, 2014-2019. PLoS One 2022; 17:e0265146. [PMID: 35353843 PMCID: PMC8967025 DOI: 10.1371/journal.pone.0265146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 02/23/2022] [Indexed: 11/19/2022] Open
Abstract
We examined the relationship between obstetrical intervention and preterm birth in the United States between 2014 and 2019. This observational study analyzed 2014-2019 US birth data to assess changes in preterm birth, cesarean delivery, induction of labor, and associated risks. Logistic regression modeled the odds of preterm obstetrical intervention (no labor cesarean or induction) after risk adjustment. The percentage of singleton preterm births in the United States increased by 9.4% from 2014-2019. The percent of singleton, preterm births delivered by cesarean increased by 6.0%, while the percent with induction of labor increased by 39.1%. The percentage of singleton preterm births where obstetrical intervention (no labor cesarean or induction) potentially impacted the gestational age at delivery increased from 47.6% in 2014 to 54.9% in 2019. Preterm interventions were 13% more likely overall in 2019 compared to 2014 and 17% more likely among late preterm births, after controlling for demographic and medical risk factors. Compared to non-Hispanic White women, Non-Hispanic Black women had a higher risk of preterm obstetric interventions. Preterm infants have higher morbidity and mortality rates than term infants, thus any increase in the preterm birth rate is concerning. A renewed effort to understand the trends in preterm interventions is needed to ensure that obstetrical interventions are evidence-based and are limited to those cases where they optimize outcomes for both mothers and babies.
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Affiliation(s)
- Marian F. MacDorman
- Maryland Population Research Center, University of Maryland, College Park, Maryland, United States of America
- * E-mail:
| | - Marie Thoma
- Department of Family Science, University of Maryland School of Public Health, College Park, Maryland, United States of America
| | - Eugene Declercq
- Department of Community Health Sciences, Boston University School of Public Health, Boston, Massachusetts, United States of America
| | - Elizabeth A. Howell
- Department of Obstetrics and Gynecology, Perlman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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Yieh L, King BC, Hay S, Dukhovny D, Zupancic JAF. Economic considerations at the threshold of viability. Semin Perinatol 2022; 46:151547. [PMID: 34887108 DOI: 10.1016/j.semperi.2021.151547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Neonatal intensive care for infants born at 22-24 weeks has become more prevalent in the past three decades, but outcomes remain highly variable between centers, in part due to different approaches in management. With this increased frequency of intervention, there has been concern for a concurrent increase in costs of care for survivors. This article reviews the direct medical, direct non-medical, and indirect costs of care for periviable infants and their families, as well as the current limitations of published data. In addition, we highlight the cost-effectiveness of neonatal intensive care and various therapies offered to extremely preterm infants, while also considering the ethical dilemmas inherently tied to periviable decision-making. Strategies to improve the gaps in knowledge on the economic impact of the smallest infants are discussed.
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Affiliation(s)
- Leah Yieh
- Fetal and Neonatal Medicine Institute, Division of Neonatal Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, 4650 Sunset Boulevard, MS #31, Los Angeles, CA 90027, USA; Leonard D. Schaeffer Center for Health Policy and Economics, University of Southern California, Los Angeles, CA, USA.
| | - Brian C King
- Department of Pediatrics, University of Pittsburgh, Pittsburgh PA, USA
| | - Susanne Hay
- Division of Newborn Medicine, Harvard Medical School, Boston, MA, USA; Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Dmitry Dukhovny
- Division of Neonatology, Department of Pediatrics, Oregon Health & Sciences University, Portland, OR, USA
| | - John A F Zupancic
- Division of Newborn Medicine, Harvard Medical School, Boston, MA, USA; Department of Neonatology, Beth Israel Deaconess Medical Center, Boston, MA, USA
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45
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Affiliation(s)
- David B Nelson
- Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas
| | - Catherine Y Spong
- Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas
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46
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Osborn EK, Jadcherla SR. Developing a Quality Improvement Feeding Program for NICU Patients. Neoreviews 2022; 23:e23-e35. [PMID: 34970663 DOI: 10.1542/neo.23-1-e23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Practices in NICUs vary widely, particularly when clinical decisions involve complex tasks and multiple disciplines, which occurs with feeding preterm infants. Neonatal feeding difficulties in preterm infants often lead to prolonged tube feeding and therefore lengthened hospital stays. Education and compliance with evidence-based protocols and guidelines are needed on the initiation of feedings and feeding advancement to transform enteral and oral feeding practices and thus reduce practice variation and improve clinical outcomes.
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Affiliation(s)
- Erika K Osborn
- Innovative Neonatal and Infant Feeding Disorders Research Program, Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH
| | - Sudarshan R Jadcherla
- Innovative Neonatal and Infant Feeding Disorders Research Program, Center for Perinatal Research, The Research Institute at Nationwide Children's Hospital, Columbus, OH.,Divisions of Neonatology and Pediatric Gastroenterology and Nutrition, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH.,Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH
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47
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Burchard J, Polpitiya AD, Fox AC, Randolph TL, Fleischer TC, Dufford MT, Garite TJ, Critchfield GC, Boniface JJ, Saade GR, Kearney PE. Clinical Validation of a Proteomic Biomarker Threshold for Increased Risk of Spontaneous Preterm Birth and Associated Clinical Outcomes: A Replication Study. J Clin Med 2021; 10:5088. [PMID: 34768605 PMCID: PMC8584743 DOI: 10.3390/jcm10215088] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 12/22/2022] Open
Abstract
Preterm births are the leading cause of neonatal death in the United States. Previously, a spontaneous preterm birth (sPTB) predictor based on the ratio of two proteins, IBP4/SHBG, was validated as a predictor of sPTB in the Proteomic Assessment of Preterm Risk (PAPR) study. In particular, a proteomic biomarker threshold of -1.37, corresponding to a ~two-fold increase or ~15% risk of sPTB, significantly stratified earlier deliveries. Guidelines for molecular tests advise replication in a second independent study. Here we tested whether the significant association between proteomic biomarker scores above the threshold and sPTB, and associated adverse outcomes, was replicated in a second independent study, the Multicenter Assessment of a Spontaneous Preterm Birth Risk Predictor (TREETOP). The threshold significantly stratified subjects in PAPR and TREETOP for sPTB (p = 0.041, p = 0.041, respectively). Application of the threshold in a Kaplan-Meier analysis demonstrated significant stratification in each study, respectively, for gestational age at birth (p < 001, p = 0.0016) and rate of hospital discharge for both neonate (p < 0.001, p = 0.005) and mother (p < 0.001, p < 0.001). Above the threshold, severe neonatal morbidity/mortality and mortality alone were 2.2 (p = 0.0083,) and 7.4-fold higher (p = 0.018), respectively, in both studies combined. Thus, higher predictor scores were associated with multiple adverse pregnancy outcomes.
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Affiliation(s)
- Julja Burchard
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Ashoka D. Polpitiya
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Angela C. Fox
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Todd L. Randolph
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Tracey C. Fleischer
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Max T. Dufford
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Thomas J. Garite
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - Gregory C. Critchfield
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - J. Jay Boniface
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
| | - George R. Saade
- Department of Obstetrics & Gynecology, University of Texas Medical Branch, Galveston, TX 77555, USA;
| | - Paul E. Kearney
- Sera Prognostics, Incorporated, Salt Lake City, UT 84109, USA; (J.B.); (A.D.P.); (A.C.F.); (T.L.R.); (M.T.D.); (T.J.G.); (G.C.C.); (J.J.B.); (P.E.K.)
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Sarafidis K, Chotas W, Agakidou E, Karagianni P, Drossou V. The Intertemporal Role of Respiratory Support in Improving Neonatal Outcomes: A Narrative Review. CHILDREN (BASEL, SWITZERLAND) 2021; 8:883. [PMID: 34682148 PMCID: PMC8535019 DOI: 10.3390/children8100883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/17/2021] [Accepted: 09/27/2021] [Indexed: 11/18/2022]
Abstract
Defining improvements in healthcare can be challenging due to the need to assess multiple outcomes and measures. In neonates, although progress in respiratory support has been a key factor in improving survival, the same degree of improvement has not been documented in certain outcomes, such as bronchopulmonary dysplasia. By exploring the evolution of neonatal respiratory care over the last 60 years, this review highlights not only the scientific advances that occurred with the application of invasive mechanical ventilation but also the weakness of the existing knowledge. The contributing role of non-invasive ventilation and less-invasive surfactant administration methods as well as of certain pharmacological therapies is also discussed. Moreover, we analyze the cost-benefit of neonatal care-respiratory support and present future challenges and perspectives.
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Affiliation(s)
- Kosmas Sarafidis
- 1st Department of Neonatology and Neonatal Intensive Care, School of Medicine, Aristotle University of Thessaloniki, Ippokrateion General Hospital, 54642 Thessaloniki, Greece; (E.A.); (P.K.); (V.D.)
| | - William Chotas
- Department of Neonatology, University of Vermont, Burlington, VT 05405, USA;
| | - Eleni Agakidou
- 1st Department of Neonatology and Neonatal Intensive Care, School of Medicine, Aristotle University of Thessaloniki, Ippokrateion General Hospital, 54642 Thessaloniki, Greece; (E.A.); (P.K.); (V.D.)
| | - Paraskevi Karagianni
- 1st Department of Neonatology and Neonatal Intensive Care, School of Medicine, Aristotle University of Thessaloniki, Ippokrateion General Hospital, 54642 Thessaloniki, Greece; (E.A.); (P.K.); (V.D.)
| | - Vasiliki Drossou
- 1st Department of Neonatology and Neonatal Intensive Care, School of Medicine, Aristotle University of Thessaloniki, Ippokrateion General Hospital, 54642 Thessaloniki, Greece; (E.A.); (P.K.); (V.D.)
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49
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Grabner M, Burchard J, Nguyen C, Chung H, Gangan N, Boniface JJ, Zupancic JAF, Stanek E. Cost-Effectiveness of a Proteomic Test for Preterm Birth Prediction. CLINICOECONOMICS AND OUTCOMES RESEARCH 2021; 13:809-820. [PMID: 34548799 PMCID: PMC8449551 DOI: 10.2147/ceor.s325094] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/15/2021] [Indexed: 11/23/2022] Open
Abstract
Background Preterm birth (PTB) carries increased risk of short- and long-term health problems as well as higher healthcare costs. Current strategies using clinically accepted maternal risk factors (prior PTB, short cervix) can only identify a minority of singleton PTBs. Objective We modeled the cost-effectiveness of a risk-screening-and-treat strategy versus usual care for commercially insured pregnant US women without clinically accepted PTB risk factors. The risk-screening-and-treat strategy included use of a novel PTB prognostic blood test (PreTRM®) in the 19th–20th week of pregnancy, followed by treatment with a combined regimen of multi-component high-intensity-case-management and pharmacologic interventions for the remainder of the pregnancy for women assessed as higher-risk by the test, and usual care in women without higher risk. Methods We built a cost-effectiveness model using a combined decision-tree/Markov approach and a US payer perspective. We modeled 1-week cycles of pregnancy from week 19 to birth (preterm or term) and assessed costs throughout the pregnancy, and further to 12-months post-delivery in mothers and 30-months in infants. PTB rates and costs were based on >40,000 mothers and infants from the HealthCore Integrated Research Database® with birth events in 2016. Estimates of test performance, treatment effectiveness, and other model inputs were derived from published literature. Results In the base case, the risk-screening-and-treat strategy dominated usual care with an estimated 870 fewer PTBs (20% reduction) and $54 million less in total cost ($863 net savings per pregnant woman). Reductions were projected for neonatal intensive care admissions (10%), overall length-of-stay (7%), and births <32 weeks (33%). Treatment effectiveness had the strongest influence on cost-effectiveness estimates. The risk-screening-and-treat strategy remained dominant in the majority of probabilistic sensitivity analysis simulations and model scenarios. Conclusion Use of a novel prognostic test during pregnancy to identify women at risk of PTB combined with evidence-based treatment is estimated to reduce total costs while preventing PTBs and their consequences.
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Affiliation(s)
| | - Julja Burchard
- Research and Development, Sera Prognostics, Salt Lake City, UT, USA
| | - Chi Nguyen
- Health Economics and Outcomes Research, HealthCore, Inc., Wilmington, DE, USA
| | - Haechung Chung
- Research Operations, HealthCore, Inc., Wilmington, DE, USA
| | - Nilesh Gangan
- Health Economics and Outcomes Research, HealthCore, Inc., Wilmington, DE, USA
| | - J Jay Boniface
- Research and Development, Sera Prognostics, Salt Lake City, UT, USA
| | - John A F Zupancic
- Department of Neonatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Eric Stanek
- Scientific Affairs, HealthCore, Inc., Wilmington, DE, USA
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50
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Prediction and Prevention of Spontaneous Preterm Birth: ACOG Practice Bulletin, Number 234. Obstet Gynecol 2021; 138:e65-e90. [PMID: 34293771 DOI: 10.1097/aog.0000000000004479] [Citation(s) in RCA: 160] [Impact Index Per Article: 53.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Indexed: 12/30/2022]
Abstract
Preterm birth is among the most complex and important challenges in obstetrics. Despite decades of research and clinical advancement, approximately 1 in 10 newborns in the United States is born prematurely. These newborns account for approximately three-quarters of perinatal mortality and more than one half of long-term neonatal morbidity, at significant social and economic cost (1-3). Because preterm birth is the common endpoint for multiple pathophysiologic processes, detailed classification schemes for preterm birth phenotype and etiology have been proposed (4, 5). In general, approximately one half of preterm births follow spontaneous preterm labor, about a quarter follow preterm prelabor rupture of membranes (PPROM), and the remaining quarter of preterm births are intentional, medically indicated by maternal or fetal complications. There are pronounced racial disparities in the preterm birth rate in the United States. The purpose of this document is to describe the risk factors, screening methods, and treatments for preventing spontaneous preterm birth, and to review the evidence supporting their roles in clinical practice. This Practice Bulletin has been updated to include information on increasing rates of preterm birth in the United States, disparities in preterm birth rates, and approaches to screening and prevention strategies for patients at risk for spontaneous preterm birth.
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