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OBJECTIVES: To assess the presence and timing of furosemide diuretic tolerance in infants with bronchopulmonary dysplasia (BPD), and to determine if tolerance is modified by thiazide co-administration. STUDY DESIGN: We performed a retrospective cohort study among infants born very preterm with BPD exposed to repeated-dose furosemide for 72 hours, measuring net fluid balance (total intake minus total output) as a surrogate of diuresis in the 3 days before and after exposure. The primary comparison was the difference in fluid balance between the first and third 24 hours of furosemide exposure. We fit a general linear model for within-subject repeated measures of fluid balance over time, with thiazide co-administration as an interaction variable. Secondary analyses included an evaluation of weight trajectories over time. RESULTS: In 83 infants, median fluid balance ranged between + 43.6 and + 52.7 ml/kg/d in the 3 days prior to furosemide exposure. Fluid balance decreased to a median of + 29.1 ml/kg/d in the first 24 hours after furosemide, but then increased to +47.5 ml/kg/d by the third 24-hour interval, consistent with tolerance (P < .001). Thiazides did not modify the change in fluid balance during furosemide exposure for any time-period. Weight decreased significantly in the first 24 hours after furosemide and increased thereafter (P < .001). CONCLUSIONS: The net fluid balance response to furosemide decreases rapidly during repeated-dose exposures in infants with BPD, consistent with diuretic tolerance. Clinicians should consider this finding in the context of an infant's therapeutic goals. Further research efforts to identify safe and effective furosemide dosage strategies are needed.
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Displasia Broncopulmonar , Doenças do Prematuro , Recém-Nascido , Humanos , Diuréticos/uso terapêutico , Furosemida , Displasia Broncopulmonar/tratamento farmacológico , Lactente Extremamente Prematuro , Estudos Retrospectivos , Doenças do Prematuro/tratamento farmacológico , Tiazidas/uso terapêuticoRESUMO
OBJECTIVE: To evaluate whether community factors that differentially affect the health of pregnant people contribute to geographic differences in infant mortality across the United States. STUDY DESIGN: This retrospective cohort study sought to characterize the association of a novel composite measure of county-level maternal structural vulnerabilities, the Maternal Vulnerability Index (MVI), with risk of infant death. We evaluated 11,456,232 singleton infants born at 22 0/7 through 44 6/7 weeks' gestation from 2012 to 2014. Using county-level MVI, which ranges from 0-100, multivariable mixed effects logistic regression models quantified associations per 20-point increment in MVI, with odds of death clustered at the county level and adjusted for state, maternal, and infant covariates. Secondary analyses stratified by the social, physical, and health exposures that comprise the overall MVI score. Outcome was also stratified by cause of death. RESULTS: Odds of death were higher among infants from counties with the greatest maternal vulnerability (0.62% in highest quintile vs 0.32% in lowest quintile, [p<0.001]). Odds of death increased 6% per 20-point increment in MVI (aOR: 1.06, 95% CI 1.04, 1.07). The effect estimate was highest with theme of mental health and substance use (aOR 1.08; 95% CI 1.06, 1.09). Increasing vulnerability was associated with six of seven causes of death. CONCLUSIONS: Community-level social, physical, and healthcare determinants indicative of maternal vulnerability may explain some of the geographic variation in infant death, regardless of cause of death. Interventions targeted to county-specific maternal vulnerabilities may reduce infant mortality.
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BACKGROUND: Severe maternal morbidity has been increasing in the past few decades. Few studies have examined the risk of severe maternal morbidity among individuals with stillbirths vs individuals with live-birth deliveries. OBJECTIVE: This study aimed to examine the prevalence and risk of severe maternal morbidity among individuals with stillbirths vs individuals with live-birth deliveries during delivery hospitalization as a primary outcome and during the postpartum period as a secondary outcome. STUDY DESIGN: This was a retrospective cohort study using birth and fetal death certificate data linked to hospital discharge records from California (2008-2018), Michigan (2008-2020), Missouri (2008-2014), Pennsylvania (2008-2014), and South Carolina (2008-2020). Relative risk regression analysis was used to examine the crude and adjusted relative risks of severe maternal morbidity along with 95% confidence intervals among individuals with stillbirths vs individuals with live-birth deliveries, adjusting for birth year, state of residence, maternal sociodemographic characteristics, and the obstetric comorbidity index. RESULTS: Of the 8,694,912 deliveries, 35,012 (0.40%) were stillbirths. Compared with individuals with live-birth deliveries, those with stillbirths were more likely to be non-Hispanic Black (10.8% vs 20.5%); have Medicaid (46.5% vs 52.0%); have pregnancy complications, including preexisting diabetes mellitus (1.1% vs 4.3%), preexisting hypertension (2.3% vs 6.2%), and preeclampsia (4.4% vs 8.4%); have multiple pregnancies (1.6% vs 6.2%); and reside in South Carolina (7.4% vs 11.6%). During delivery hospitalization, the prevalence rates of severe maternal morbidity were 791 cases per 10,000 deliveries for stillbirths and 154 cases per 10,000 deliveries for live-birth deliveries, whereas the prevalence rates for nontransfusion severe maternal morbidity were 502 cases per 10,000 deliveries for stillbirths and 68 cases per 10,000 deliveries for live-birth deliveries. The crude relative risk for severe maternal morbidity was 5.1 (95% confidence interval, 4.9-5.3), whereas the adjusted relative risk was 1.6 (95% confidence interval, 1.5-1.8). For nontransfusion severe maternal morbidity among stillbirths vs live-birth deliveries, the crude relative risk was 7.4 (95% confidence interval, 7.0-7.7), whereas the adjusted relative risk was 2.0 (95% confidence interval, 1.8-2.3). This risk was not only elevated among individuals with stillbirth during the delivery hospitalization but also through 1 year after delivery (severe maternal morbidity adjusted relative risk, 1.3; 95% confidence interval, 1.1-1.4; nontransfusion severe maternal morbidity adjusted relative risk, 1.2; 95% confidence interval, 1.1-1.3). CONCLUSION: Stillbirth was found to be an important contributor to severe maternal morbidity.
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Pré-Eclâmpsia , Complicações na Gravidez , Gravidez , Feminino , Humanos , Natimorto/epidemiologia , Estudos Retrospectivos , Complicações na Gravidez/epidemiologia , Morte Fetal , Pré-Eclâmpsia/epidemiologiaRESUMO
PURPOSE: Physically or psychologically distressing birth experiences can influence postpartum health, parenting efficacy, and future pregnancy plans. Communication deficits contribute to negative birth experiences. This qualitative analysis explored themes related to communication and negative birth experiences among Black birthing people who experienced preterm birth. METHODS: We conducted qualitative interviews with non-Hispanic Black, English language-proficient birthing people with Medicaid-insured preterm infants. Interviews were designed to explore experiences with health care access and well-being after birth. Interviews were audio recorded, transcribed, and coded following an integrated approach where we applied a priori codes and captured emergent themes from the data. RESULTS: We interviewed 30 participants from October 2018 to July 2021. Median gestational age at birth was 30 weeks (range 22-36 weeks). Interviews occurred a median of 7 months postpartum (range 2-34 months). Themes emerged related to negative birth experiences and communication: (1) communication gaps during urgent or emergent intrapartum procedures contributed to negative birth experiences; (2) postpartum opportunities to share birth experiences, particularly with peers, sometimes mitigated the psychological consequences of negative birth experiences; (3) participants did not consistently discuss concerns about future pregnancy risk related to negative birth experiences with clinical teams. CONCLUSIONS: Themes from this sample of Black birthing people who experienced preterm birth suggest 3 ways health systems might intervene to improve communication to mitigate the consequences of negative birth experiences. Improvement efforts in these areas may improve postpartum health, future pregnancy outcomes, and long-term health.
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Nascimento Prematuro , Recém-Nascido , Lactente , Estados Unidos , Feminino , Gravidez , Humanos , Recém-Nascido Prematuro , Comunicação , Acessibilidade aos Serviços de Saúde , MedicaidRESUMO
OBJECTIVES: Care management programs for medically complex infants interact with parents after complicated pregnancies, when gaps in maternal health care are well documented. These care managers may have the relationships and skills to promote postpartum and interconception health and health care access. It is unknown whether expanding these care management models to address maternal needs would be acceptable. METHODS: We conducted qualitative interviews with women with a history of preterm birth and clinicians. For women with a history of preterm birth, additional inclusion criteria were Medicaid-insured infant in one health system and English proficiency. We purposively oversampled women whose infants received care management. Clinicians worked in two geographically adjacent health systems. Interviews explored priorities after preterm birth and perceived acceptability of mother-infant dyad care management. Interviews were audio recorded, transcribed, and coded following an integrated approach in which we applied a priori codes and captured emergent themes. RESULTS: We interviewed 33 women (10/2018-7/2021) and 24 clinicians (3/2021-8/2021). Women were predominantly non-Hispanic Black, and 15 had infants receiving care management. Clinicians included physicians, nurses, and social workers from Pediatrics, Obstetrics, and Family Medicine. Subgroups converged thematically, finding care management acceptable. Tailoring programs to address stress and sleep, emphasizing care managers with strong interpersonal skills and shared experiences with care management users, and program flexibility would contribute to acceptability. CONCLUSIONS FOR PRACTICE: Dyad care management after preterm birth is acceptable to potential program end-users and clinicians. Dyad health promotion may contribute to improved birth outcomes, infant, and parent health.
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Obstetrícia , Nascimento Prematuro , Gravidez , Lactente , Recém-Nascido , Humanos , Feminino , Criança , Período Pós-Parto , Mães , Pesquisa QualitativaRESUMO
OBJECTIVE: To evaluate the healthcare costs attributed to major morbidities associated with prematurity, namely, bronchopulmonary dysplasia (BPD), intraventricular hemorrhage, necrotizing enterocolitis (NEC), retinopathy of prematurity (ROP), and nosocomial infections. STUDY DESIGN: This was a retrospective analysis of infants born at 24-30 weeks of gestation, admitted to children's hospitals in the Pediatric Health Information System between 2009 and 2018. Charges were adjusted by geographical price index, converted to costs using cost-to-charge ratios, inflated to 2018 US$, and total costs were accumulated for the initial hospitalization. Quantile regressions, which are less prone to bias from extreme outliers, were used to examine the incremental costs attributed to each morbidity across the entire cost distribution, including the median. RESULTS: There were 19â232 patients from 30 children's hospitals who were eligible. Higher costs were seen in lower gestational age, more severe morbidity, and those with higher number of comorbidities. Patients with surgical NEC, severe ROP, and severe BPD were the costliest with median total costs of $430 860, $413 825, and $399 495, respectively. Quantile regressions showed surgical NEC had the highest adjusted median incremental total cost ($48 621; 95% CI, $39 617-$57 626) followed by severe BPD ($35 773; 95% CI, $32 018-$39 528) and severe ROP ($22 561; 95% CI, $16 699-$28 423). Quantile regressions also revealed that surgical NEC, severe BPD, and severe ROP had increasing incremental costs at higher total cost percentiles, indicating these morbidities have a greater cost impact on the costliest patients. CONCLUSIONS: Severe BPD, surgical NEC, and severe ROP are the costliest morbidities and contribute the most incremental costs especially for the higher costs patients.
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Displasia Broncopulmonar , Enterocolite Necrosante , Doenças do Recém-Nascido , Retinopatia da Prematuridade , Lactente , Recém-Nascido , Humanos , Criança , Estudos Retrospectivos , Recém-Nascido Prematuro , Idade Gestacional , Retinopatia da Prematuridade/epidemiologia , Displasia Broncopulmonar/epidemiologia , Morbidade , Enterocolite Necrosante/epidemiologia , Custos de Cuidados de Saúde , HospitaisRESUMO
OBJECTIVE: To investigate among US infants born at <37 weeks gestation (a) racial and ethnic disparities in sudden unexpected infant death (SUID) and (b) state variation in SUID rates and non-Hispanic Black (NHB)-non-Hispanic White (NHW) SUID disparity ratio. METHODS: In this retrospective cohort analysis of linked birth and death certificates from 50 states from 2005 to 2014, SUID was defined by the following International Classification of Diseases, 9th or 10th edition, codes listed on death certificates: (7980, R95 or Recode 135; ASSB: E913, W75 or Recode 146; Unknown: 7999 R99 or Recode 134). Multivariable models were used to assess the independent association between maternal race and ethnicity and SUID, adjusting for several maternal and infant characteristics. The NHB-NHW SUID disparity ratios were calculated for each state. RESULTS: Among 4â086â504 preterm infants born during the study period, 8096 infants (0.2% or 2.0 per 1000 live births) experienced SUID. State variation in SUID ranged from the lowest rate of 0.82 per 1000 live births in Vermont to the highest rate of 3.87 per 1000 live births in Mississippi. Unadjusted SUID rates across racial and ethnic groups varied from 0.69 (Asian/Pacific Islander) to 3.51 (NHB) per 1000 live births. In the adjusted analysis, compared with NHW infants, NHB and Alaska Native/American Indian preterm infants had greater odds of SUID (aOR, 1.5;[95% CI, 1.42-1.59] and aOR, 1.44 [95% CI, 1.21-1.72]) with varying magnitude of SUID rates and NHB-NHW disparities across states. CONCLUSIONS: Significant racial and ethnic disparities in SUID among preterm infants exist with variation across US states. Additional research to identify the drivers of these disparities within and across states is needed.
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Recém-Nascido Prematuro , Morte Súbita do Lactente , Feminino , Lactente , Recém-Nascido , Humanos , Estados Unidos/epidemiologia , Estudos Retrospectivos , Etnicidade , Mortalidade Infantil , Morte Súbita do Lactente/epidemiologiaRESUMO
BACKGROUND: While the health, social, and economic impacts of opioid addiction on adults and their communities are well known, the impact of maternal opioid use on the fetus exposed in utero is less well understood. METHODS: This paper presents the protocol of the ACT NOW Outcomes of Babies with Opioid Exposure (OBOE) Study, a multi-site prospective longitudinal cohort study of infants with antenatal opioid exposure and unexposed controls. Study objectives are to determine the impact of antenatal opioid exposure on brain development and neurodevelopmental outcomes over the first 2 years of life and explore whether family, home, and community factors modify developmental trajectories during this critical time period. RESULTS: Primary outcomes related to brain development include cortical volumes, deep cerebral gray matter volumes, resting-state functional connectivity measures, and structural connectivity measures using diffusion tensor imaging. Primary neurodevelopmental outcomes include visual abnormalities, cognitive, language, and motor skills measured using the Bayley Scales of Infant Development and social-emotional and behavioral problems and competence measured by the Brief Infant-Toddler Social and Emotional Assessment. CONCLUSIONS: The OBOE study has been designed to overcome challenges of previous studies and will help further understanding of the effects of antenatal opioid exposure on early infant development. IMPACT: This study will integrate MRI findings and comprehensive neurodevelopmental assessments to provide early insights into the functional topography of the brain in this high-risk population and assess MRI as a potential biomarker. Rather than conducting neuroimaging at a single time point, the study will include serial MRI assessments from birth to 2 years, allowing for the examination of trajectories throughout this period of rapid brain development. While previous studies often have had limited information on exposures, this study will use umbilical cord assays to accurately measure amounts of opioids and other substances from 20 weeks of gestation to birth.
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Analgésicos Opioides , Imagem de Tensor de Difusão , Lactente , Adulto , Humanos , Feminino , Gravidez , Analgésicos Opioides/efeitos adversos , Estudos Prospectivos , Estudos Longitudinais , Encéfalo/diagnóstico por imagemRESUMO
OBJECTIVES: To explore the relative risks of preterm birth-both overall and stratified into 3 groups (late, moderate, and extreme prematurity)-associated with maternal race, ethnicity, and nativity (ie, birthplace) combined. STUDY DESIGN: This was a retrospective cross-sectional cohort study of women delivering a live birth in Pennsylvania from 2011 to 2014 (n = 4 499 259). Log binomial and multinomial regression analyses determined the relative risks of each strata of preterm birth by racial/ethnic/native category, after adjusting for maternal sociodemographic, medical comorbidities, and birth year. RESULTS: Foreign-born women overall had lower relative risks of both overall preterm birth and each strata of prematurity when examined en bloc. However, when considering maternal race, ethnicity, and nativity together, the relative risk of preterm birth for women in different racial/ethnic/nativity groups varied by preterm strata and by race. Being foreign-born appeared protective for late prematurity. However, only foreign-born White women had lower adjusted relative risks of moderate and extreme preterm birth compared with reference groups. All ethnic/native sub-groups of Black women had a significantly increased risk of extreme preterm births compared with US born non-Hispanic White women. CONCLUSIONS: Race, ethnicity, and nativity contribute differently to varying levels of prematurity. Future research involving birth outcome disparities may benefit by taking a more granular approach to the outcome of preterm birth and considering how nativity interacts with race and ethnicity.
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Nascimento Prematuro , Estudos Transversais , Etnicidade , Feminino , Humanos , Recém-Nascido , Avaliação de Resultados em Cuidados de Saúde , Gravidez , Nascimento Prematuro/epidemiologia , Estudos RetrospectivosRESUMO
OBJECTIVES: Wait time for emergency care is a quality measure that affects clinical outcomes and patient satisfaction. It is unknown if there is racial/ethnic variability in this quality measure in pediatric emergency departments (PEDs). We aim to determine whether racial/ethnic differences exist in wait times for children presenting to PEDs and examine between-site and within-site differences. METHODS: We conducted a retrospective cohort study for PED encounters in 2016 using the Pediatric Emergency Care Applied Research Network Registry, an aggregated deidentified electronic health registry comprising 7 PEDs. Patient encounters were included among all patients 18 years or younger at the time of the ED visit. We evaluated differences in emergency department wait time (time from arrival to first medical evaluation) considering patient race/ethnicity as the exposure. RESULTS: Of 448,563 visits, median wait time was 35 minutes (interquartile range, 17-71 minutes). Compared with non-Hispanic White (NHW) children, non-Hispanic Black (NHB), Hispanic, and other race children waited 27%, 33%, and 12% longer, respectively. These differences were attenuated after adjusting for triage acuity level, mode of arrival, sex, age, insurance, time of day, and month [adjusted median wait time ratios (95% confidence intervals): 1.11 (1.10-1.12) for NHB, 1.12 (1.11-1.13) for Hispanic, and 1.05 (1.03-1.06) for other race children compared with NHW children]. Differences in wait time for NHB and other race children were no longer significant after adjusting for clinical site. Fully adjusted median wait times among Hispanic children were longer compared with NHW children [1.04 (1.03-1.05)]. CONCLUSIONS: In unadjusted analyses, non-White children experienced longer PED wait times than NHW children. After adjusting for illness severity, patient demographics, and overcrowding measures, wait times for NHB and other race children were largely determined by site of care. Hispanic children experienced longer within-site and between-site wait times compared with NHW children. Additional research is needed to understand structures and processes of care contributing to wait time differences between sites that disproportionately impact non-White patients.
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Listas de Espera , População Branca , Negro ou Afro-Americano , Criança , Serviço Hospitalar de Emergência , Humanos , Estudos RetrospectivosRESUMO
OBJECTIVES: To measure between-center variation in loop diuretic use in infants developing severe bronchopulmonary dysplasia (BPD) in US children's hospitals, and to compare mortality and age at discharge between infants from low-use centers and infants from high-use centers. STUDY DESIGN: We performed a retrospective cohort study of preterm infants at <32 weeks of gestational age with severe BPD. The primary outcome was cumulative loop diuretic use, defined as the proportion of days with exposure between admission and discharge. Infant characteristics associated with loop diuretic use at P < .10 were included in multivariable models to adjust for center differences in case mix. Hospitals were ranked from lowest to highest in adjusted use and dichotomized into low-use centers and high-use centers. We then compared mortality and postmenstrual age at discharge between the groups through multivariable analyses. RESULTS: We identified 3252 subjects from 43 centers. Significant variation between centers remained despite adjustment for infant characteristics, with use present in an adjusted mean range of 7.3% to 49.4% of days (P < .0001). Mortality did not differ significantly between the 2 groups (aOR, 0.98; 95% CI, 0.62-1.53; P = .92), nor did postmenstrual age at discharge (marginal mean, 47.3 weeks [95% CI, 46.8-47.9 weeks] in the low-use group vs 47.4 weeks [95% CI, 46.9-47.9 weeks] in the high-use group; P = .96). CONCLUSIONS: A marked variation in loop diuretic use for infants developing severe BPD exists among US children's hospitals, without an observed difference in mortality or age at discharge. More research is needed to provide evidence-based guidance for this common exposure.
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Displasia Broncopulmonar/tratamento farmacológico , Disparidades em Assistência à Saúde/estatística & dados numéricos , Padrões de Prática Médica/estatística & dados numéricos , Inibidores de Simportadores de Cloreto de Sódio e Potássio/uso terapêutico , Displasia Broncopulmonar/diagnóstico , Displasia Broncopulmonar/mortalidade , Esquema de Medicação , Feminino , Hospitais Pediátricos , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Modelos Lineares , Modelos Logísticos , Masculino , Análise Multivariada , Alta do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Índice de Gravidade de Doença , Resultado do Tratamento , Estados UnidosRESUMO
BACKGROUND: Maternal mortality is higher among Black than White people in the United States. Whether Black-White disparities in maternal in-hospital mortality during the delivery hospitalization vary across hospital types (Black-serving vs nonBlack-serving and teaching vs nonteaching) and whether overall maternal mortality differs across hospital types is not known. OBJECTIVE: The aims of this study were to determine whether risk-adjusted Black-White disparities in maternal mortality during the delivery hospitalization vary by hospital types (this is analysis of disparities in mortality within hospital types) and compare risk-adjusted in-hospital maternal mortality among Black-serving and nonBlack-serving teaching and nonteaching hospitals regardless of race (this is an analysis of overall mortality across hospital types). STUDY DESIGN: We performed a population-based, retrospective cohort study of 5,679,044 deliveries among Black (14.2%) and White patients (85.8%) in 3 states (California, Missouri, and Pennsylvania) from 1995 to 2009. A hospital discharge disposition of "death" defined maternal in-hospital mortality. Black-serving hospitals had at least 7% Black obstetrical patients (top quartile). We performed risk adjustment by calculating expected death rates using predictions from logistic regression models incorporating sociodemographics, rurality, comorbidities, multiple gestations, gestational age at delivery, year, state, and mode of delivery. We calculated risk-adjusted risk ratios of mortality by comparing observed-to-expected ratios among Black and White patients within hospital types and then examined mortality across hospital types, regardless of patient race. We quantified the proportion of Black-White disparities in mortality attributable to delivering in Black-serving hospitals using causal mediation analysis. RESULTS: There were 330 maternal deaths among 5,679,044 patients (5.8 per 100,000). Black patients died more often (11.5 per 100,000) than White patients (4.8 per 100,000) (relative risk, 2.38; 95% confidence interval, 1.89-2.98). Examination of Black-White disparities revealed that after risk adjustment, Black patients had significantly greater risk of death (adjusted relative risk, 1.44; 95% confidence interval, 1.17-1.79) and that the disparity was similar within each of the hospital types. Comparison of mortality, regardless of race, across hospital types revealed that among teaching hospitals, mortality was similar in Black-serving and nonBlack-serving hospitals. However, among nonteaching hospitals, mortality was significantly higher in Black-serving vs nonBlack-serving hospitals (adjusted relative risk, 1.47; 95% confidence interval, 1.15-1.87). Notably, 53% of Black patients delivered in nonteaching, Black-serving hospitals compared with just 19% of White patients. Among nonteaching hospitals, 47% of Black-White disparities in maternal in-hospital mortality were attributable to delivering at Black-serving hospitals. CONCLUSION: Maternal in-hospital mortality during the delivery hospitalization among Black patients is more than double that of White patients. Our data suggest this disparity is caused by excess mortality among Black patients within each hospital type, in addition to excess mortality in nonteaching, Black-serving hospitals where most Black patients deliver. Addressing downstream effects of racism to achieve equity in maternal in-hospital mortality will require transparent reporting of quality metrics by race to reduce differential care and outcomes within hospital types, improvements in care delivery at Black-serving hospitals, overcoming barriers to accessing high-quality care among Black patients, and eventually desegregation of healthcare.
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Negro ou Afro-Americano/estatística & dados numéricos , Disparidades em Assistência à Saúde/estatística & dados numéricos , Mortalidade Hospitalar/etnologia , Hospitais/estatística & dados numéricos , Mortalidade Materna/etnologia , População Branca/estatística & dados numéricos , Adulto , Estudos de Coortes , Parto Obstétrico/estatística & dados numéricos , Feminino , Hospitais de Ensino/estatística & dados numéricos , Humanos , Gravidez , Complicações na Gravidez/epidemiologia , Estudos Retrospectivos , Estados Unidos/epidemiologiaRESUMO
BACKGROUND: Surface mining has become a significant method of coal mining in the Central Appalachian region of the eastern United States alongside the traditional underground mining. Concerns have been raised about the health effects of this surface mining, particularly mountaintop removal mining where coal is mined upon steep mountaintops by removing the mountaintop through clearcutting forests and explosives. METHODS: We used a control group design with a pretest and a posttest to assess the associations of surface mining in Central Appalachia with low birth weight and other adverse birth outcomes. The pretest period is 1977-1989, a period of low surface mining activity. We consider three posttest periods: 1990-1998, 1999-2011 and 2012-2017, with 1999-2011 as the primary analysis and the other periods as secondary analyses. Surface mining in Central Appalachia increased after 1989, partly resulting from the Clean Air Act Amendments of 1990 which made surface mining in Appalachia more financially attractive. For the primary analysis, we fit a logistic regression model of the primary outcome (low birth weight, <2500 g) on dummy variables for county and year; individual level maternal/infant covariates (maternal race, maternal age, infant sex and whether birth was a multiple birth); and the amount of surface mining during the year of the birth in the maternal county of residence. RESULTS: Our analysis sample consisted of 783,328 infants -- 482,284 infants born from 1977 to 2017 to women residing in substantial surface mining activity counties and 301,044 infants born from 1977 to 2017 to women residing in matched control counties. Compared to the pre-period of low surface mining from 1977 to 1989, for the primary analysis posttest period of 1999-2011, there was an estimated relative increase in low birth weight in surface mining counties compared to matched control counties that was not statistically significant (odds ratio for a 5 percentage point increase in area disturbed by surface mining: 1.07, 95% confidence interval (0.96, 1.20), p-value: .22). For the secondary analysis posttest period of 1990-1998, there was no increase (odds ratio: 0.91, 95% confidence interval: (0.74, 1.13), p-value: .41). For the secondary analysis posttest period of 2012-2017, there was a statistically significant relative increase (odds ratio: 1.28, 95% confidence interval: (1.08, 1.50), p-value: .004). Qualitatively similar results were found for the outcomes of very low birth weight, preterm birth and small-for-gestational age. CONCLUSIONS: We examined the hypothesis that surface mining activity in Central Appalachia contributes to low birth weight using an observational study. We found evidence in secondary analyses that surface mining was associated with low birth weight in the 2012-2017 time period and potentially beginning in the early to mid 2000's. Evidence for an association was not found prior to 2000. A potential explanation for this pattern of association is that surface mining caused an increase in low birth weight but its onset was delayed. Future research is needed to clarify the findings and if replicated, identify the mechanism necessary to mitigate the impacts of mining on adverse birth outcomes.
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Minas de Carvão , Nascimento Prematuro , Região dos Apalaches , Carvão Mineral , Feminino , Humanos , Lactente , Recém-Nascido de Baixo Peso , Recém-Nascido , Gravidez , Estados UnidosRESUMO
BACKGROUND: The goal of regionalized perinatal care, specifically levels of maternal care, is to improve maternal outcomes through risk-appropriate obstetric care. Studies of levels of maternal care are limited by current approaches to identify a hospital's level of care, often relying on hospital self-reported data, which is expensive and challenging to collect and validate. The study objective was to develop an empiric approach to determine a hospital's level of maternal care using administrative data reflective of the patient care provided and apply this approach to describe the levels of maternal care available over time. METHODS: Retrospective cohort study of mother-infant dyads who delivered in California, Missouri, and Pennsylvania hospitals from 2000 to 2009. Linked mother-infant administrative records with an infant born at 24-44 weeks' gestation and a birth weight of 400-8000 g were included. Using the American College of Obstetricians and Gynecologists and the Society for Maternal Fetal Medicine descriptions of levels of maternal care, four levels were classified based on the appropriate location of care for patients with specific medical or pregnancy conditions. Individual hospitals were assigned a level of maternal care annually based on the volume of patients who delivered reflective of the four classified levels as determined by International Classification of Diseases and Current Procedural Terminology. RESULTS: Based on the included 6,895,000 mother-infant dyads, the obstetric hospital levels of maternal care I, II, III and IV were identified. High-risk patients more frequently delivered in hospitals with higher level maternal care, accounting for 8.9, 10.9, 13.8, and 16.9% of deliveries in level I, II, III and IV hospitals, respectively. The total number of obstetric hospitals decreased over the study period, while the proportion of hospitals with high-level (level III or IV) maternal care increased. High-level hospitals were located in more densely populated areas. CONCLUSION: Identification of the level of maternal care, independent of hospital self-reported variables, is feasible using administrative data. This empiric approach, which accounts for changes in hospitals over time, is a valuable framework for perinatal researchers and other stakeholders to inexpensively identify measurable benefits of levels of maternal care and characterize where specific patient populations receive care.
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Serviços de Saúde Materna , Criança , Feminino , Hospitais , Humanos , Recém-Nascido , Missouri , Pennsylvania , Gravidez , Estudos RetrospectivosRESUMO
OBJECTIVE: Preterm birth rates in the population and associated racial inequities have remained relatively unchanged in the United States despite research aimed at prevention. This is potentially the result of the multifactorial pathophysiologic pathways that result in preterm birth, where biological and social drivers intersect in unique ways for different women. The field of dissemination and implementation (D&I) science may address this issue by promoting the contextually-aware uptake of science into health and health care delivery. STUDY DESIGN: In this paper, we describe how the field of D&I science may afford new perspectives on preterm birth prevention to researchers and tools to design studies that translate clinical trial data into measurable changes at the level of the population. We discuss key examples where the perspectives and tools of D&I science have been used in conjunction with quality improvement methodology to change preterm birth rates in large population studies. We build on these case studies and suggest future D&I science-informed studies that could be explored. CONCLUSION: Incorporating D&I scientific principles into the design of studies to prevent preterm birth may allow future research to better address the varied ways in which social forces comingle with biological risk factors to result in preterm birth.
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Ciência da Implementação , Disseminação de Informação , Nascimento Prematuro/prevenção & controle , Meio Social , Feminino , Humanos , Gravidez , Determinantes Sociais da SaúdeRESUMO
We explored medication use by children born preterm at 5-8 years of age. Compared with children born at full term, children born preterm had higher medication use that included most therapeutic classifications. Although asthma and chronic lung disease influenced use, prematurity remained an independent risk factor.
Assuntos
Tratamento Farmacológico/estatística & dados numéricos , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Humanos , Recém-Nascido , Recém-Nascido Prematuro , Masculino , Estudos Retrospectivos , Fatores de RiscoRESUMO
OBJECTIVE: To evaluate the hypothesis that early-onset sepsis increases risk of death or neurodevelopmental impairment (NDI) among preterm infants; and that among infants without early-onset sepsis, prolonged early antibiotics alters risk of death/NDI. STUDY DESIGN: Retrospective cohort study of infants born at the Eunice Kennedy Shriver National Institute of Child Health and Human Development Neonatal Research Network centers (2006-2014) at 22-26 weeks of gestation and birth weight 401-1000 g. Early-onset sepsis defined as growth of a pathogen from blood or cerebrospinal fluid culture ≤72 hours after birth. Prolonged early antibiotics was defined as antibiotics initiated ≤72 hours and continued ≥5 days without culture-confirmed infection, necrotizing enterocolitis, or spontaneous perforation. Primary outcome was death before follow-up or NDI assessed at 18-26 months corrected age. Poisson regression was used to estimate adjusted relative risk (aRR) and CI for early-onset sepsis outcomes. A propensity score for receiving prolonged antibiotics was derived from early clinical factors and used to match infants (1:1) with and without prolonged antibiotic exposure. Log binomial models were used to estimate aRR for outcomes in matched infants. RESULTS: Among 6565 infants, those with early-onset sepsis had higher aRR (95% CI) for death/NDI compared with infants managed with prolonged antibiotics (1.18 [1.06-1.32]) and to infants without prolonged antibiotics (1.23 [1.10-1.37]). Propensity score matching was achieved for 4362 infants. No significant difference in death/NDI (1.04 [0.98-1.11]) was observed with or without prolonged antibiotics among the matched cohort. CONCLUSIONS: Early-onset sepsis was associated with increased risk of death/NDI among extremely preterm infants. Among matched infants without culture-confirmed infection, prolonged early antibiotic administration was not associated with death/NDI.
Assuntos
Antibacterianos/administração & dosagem , Sepse/tratamento farmacológico , Sepse/mortalidade , Idade de Início , Pré-Escolar , Estudos de Coortes , Feminino , Humanos , Lactente Extremamente Prematuro , Masculino , Transtornos do Neurodesenvolvimento/epidemiologia , Transtornos do Neurodesenvolvimento/etiologia , Estudos Retrospectivos , Medição de Risco , Sepse/complicações , Taxa de Sobrevida , Fatores de TempoRESUMO
BACKGROUND: Following birth, women may access preventive care in adult settings or, with their infants, in pediatric settings. Preventive care can improve future birth outcomes and long-term health, particularly for women with health risks. METHODS: This cohort study linked mother-infant Medicaid claims from 12 states for 2007-2011 births. Pregnancy claims identified health risk categories: maternal cardiovascular (diabetes, hypertension, pre-eclampsia, obesity), maternal mental health (depression, anxiety), and premature birth. Claims for 1 year following birth identified adult and pediatric preventive visits. Logistic regression assessed the relationship between visits and risks, adjusting for maternal demographics, perinatal health care utilization, year, and state. RESULTS: Of 594,888 mother-infant dyads with Medicaid eligibility for 1 year following birth, 36% had health risks. In total, 38% of all dyads, and 33% with health risks, had no adult preventive visits. Dyads had a median of 1 (IQR, 0-2) adult and 3 (IQR, 2-5) pediatric preventive visits. A total of 72% of dyads had more preventive visits in pediatric than adult settings. In regression, preterm birth was associated with lower odds of any adult preventive visits [odds ratio (OR), 0.97; 95% confidence interval (CI), 0.95-0.99], and maternal health risks with higher odds (cardiovascular OR, 1.19; 95% CI, 1.18-1.21; mental health OR, 1.87; 95% CI, 1.84-1.91), compared with dyads without risk. CONCLUSIONS: Maternal health risks were associated with increased adult preventive visits, but 38% of dyads had no adult preventive visits in the year following birth. Most dyads had more opportunities for preventive care in pediatric settings than adult settings.
Assuntos
Medicaid/estatística & dados numéricos , Aceitação pelo Paciente de Cuidados de Saúde/estatística & dados numéricos , Complicações na Gravidez/epidemiologia , Serviços Preventivos de Saúde/estatística & dados numéricos , Adulto , Feminino , Humanos , Lactente , Recém-Nascido , Revisão da Utilização de Seguros , Modelos Logísticos , Masculino , Gravidez , Estudos Retrospectivos , Fatores Socioeconômicos , Estados Unidos , Adulto JovemRESUMO
Differences in preterm birth rates between black and white women are the largest contributor to racial disparities in infant mortality. In today's age of precision medicine, analysis of the genome, epigenome, metabolome, and microbiome has generated interest in determining whether these biomarkers can help explain racial disparities. We propose that there are pitfalls as well as opportunities when using precision medicine analyses to interrogate disparities in health. To conclude that racial disparities in complex conditions are genetic in origin ignores robust evidence that social and environmental factors that track with race are major contributors to disparities. Biomarkers measured in omic assays that may be more environmentally responsive than genomics, such as the epigenome or metabolome, may be on the causal pathway of race and preterm birth, but omic observational studies suffer from the same limitations as traditional cohort studies. Confounding can lead to false conclusions about the causal relationship between omics and preterm birth. Methodological strategies (including stratification and causal mediation analyses) may help to ensure that associations between biomarkers and exposures, as well as between biomarkers and outcomes, are valid signals. These epidemiologic strategies present opportunities to assess whether precision medicine biomarkers can uncover biology underlying perinatal health disparities.
Assuntos
População Negra , Disparidades nos Níveis de Saúde , Medicina de Precisão , Nascimento Prematuro/etnologia , População Branca , População Negra/genética , Tomada de Decisão Clínica , Feminino , Humanos , Gravidez , Nascimento Prematuro/genética , Nascimento Prematuro/prevenção & controle , Fatores Raciais , Medição de Risco , Fatores de Risco , Determinantes Sociais da Saúde , População Branca/genéticaRESUMO
Prematurity is associated with diverse developmental abnormalities, yet few studies relate cognitive and neurostructural deficits to a dimensional measure of prematurity. Leveraging a large sample of children, adolescents, and young adults (age 8-22 years) studied as part of the Philadelphia Neurodevelopmental Cohort, we examined how variation in gestational age impacted cognition and brain structure later in development. Participants included 72 preterm youth born before 37 weeks' gestation and 206 youth who were born at term (37 weeks or later). Using a previously-validated factor analysis, cognitive performance was assessed in three domains: (1) executive function and complex reasoning, (2) social cognition, and (3) episodic memory. All participants completed T1-weighted neuroimaging at 3 T to measure brain volume. Structural covariance networks were delineated using non-negative matrix factorization, an advanced multivariate analysis technique. Lower gestational age was associated with both deficits in executive function and reduced volume within 11 of 26 structural covariance networks, which included orbitofrontal, temporal, and parietal cortices as well as subcortical regions including the hippocampus. Notably, the relationship between lower gestational age and executive dysfunction was accounted for in part by structural network deficits. Together, these findings emphasize the durable impact of prematurity on cognition and brain structure, which persists across development.