Racial and ethnic disparities in post-operative mortality following congenital heart surgery

The Association of Race and Ethnicity with Mortality in Pediatric Patients with Congenital Heart Disease: a Systematic Review

CONTEXT

Congenital heart disease (CHD) is a common condition with high morbidity and mortality and is subject to racial and ethnic health disparities.

OBJECTIVE

To conduct a systematic review of the literature to identify differences in mortality in pediatric patients with CHD based on race and ethnicity.

DATA SOURCES

Legacy PubMed (MEDLINE), Embase (Elsevier), and Scopus (Elsevier) STUDY SELECTION: English language articles conducted in the USA focused on mortality based on race and ethnicity in pediatric patients with CHD.

DATA EXTRACTION

Two independent reviewers assessed studies for inclusion and performed data extraction and quality assessment. Data extraction included mortality based on patient race and ethnicity.

RESULTS

There were 5094 articles identified. After de-duplication, 2971 were screened for title and abstract content, and 45 were selected for full-text assessment. Thirty studies were included for data extraction. An additional 8 articles were identified on reference review and included in data extraction for a total of 38 included studies. Eighteen of 26 studies showed increased risk of mortality in non-Hispanic Black patients. Results were heterogenous in Hispanic patients with eleven studies of 24 showing an increased risk of mortality. Results for other races demonstrated mixed outcomes.

LIMITATIONS

Study cohorts and definitions of race and ethnicity were heterogenous, and there was some overlap in national datasets used.

CONCLUSION

Overall, racial and ethnic disparities existed in the mortality of pediatric patients with CHD across a variety of mortality types, CHD lesions, and pediatric age ranges. Children of races and ethnicities other than non-Hispanic White generally had increased risk of mortality, with non-Hispanic Black children most consistently having the highest risk of mortality. Further investigation is needed into the underlying mechanisms of these disparities so interventions to reduce inequities in CHD outcomes can be implemented.

The Heart of the Matter: A Path to Building Diversity in Pediatric Cardiology

Our essay discusses the impact of underrepresentation in medical training, with a focus on pediatric cardiology. We use the perspective of a physician who is underrepresented in medicine (URiM), and has chosen to pursue a career in pediatric cardiology, to initiate an analysis of the current path toward pediatric cardiology and the factors in undergraduate and graduate medical education which could currently be optimized to improve diversity in training. We argue that a lack of diversity among physicians leads to worse patient outcomes, and we describe steps to improve representation in the field. In order to improve representation in pediatric cardiology, we must reflect upon our current practices and implement systemic changes within cardiology training program recruitment and retention practices. These changes should include continuous mentorship of URiM trainees interested in cardiology and prioritization of research that investigates social determinants of health which may disproportionally affect minority patients.

Associations between Child Opportunity Index and Pediatric Cardiac Surgical Outcomes

OBJECTIVE

To assess the relationship between the Child Opportunity Index (COI), a comprehensive measurement of social determinants of health, and specific COI domains on patient-specific outcomes following congenital cardiac surgery in the metropolitan region of Atlanta, Georgia.

STUDY DESIGN

In this retrospective chart review, we included patients who underwent an index operation for congenital heart disease between 2010 and 2020 in a single pediatric health care system. Patients' addresses were geocoded and mapped to census tracts. Descriptive statistics, univariable analysis, and multivariable regression models were employed to assess associations between variables and outcomes.

RESULTS

Of the 7460 index surgeries, 3798 (51%) met eligibility criteria. Presence of an adverse outcome, defined as either mortality or 1 of several other major postoperative morbidities, was significantly associated with COI in the univariable model (P = .008), but not the multivariable regression model (P = .39). Postoperative hospital length of stay was significantly associated with COI (P < .001) in univariable and multivariable regression models. There was no significant association between COI and readmission within 30 days of hospital discharge in univariable (P < .094) and multivariable (P = .49) models.

CONCLUSION

COI is associated with postoperative hospital length of stay but not all outcomes in patients after congenital heart surgery. By understanding the role of COI in outcomes related to cardiac surgery, targeted interventions can be developed to improve health equity.

Racial and Ethnic Disparities in Health Care Usage and Death by Neighborhood Poverty Among Individuals With Congenital Heart Defects, 4 US Surveillance Sites, 2011 to 2013

BACKGROUND

Socioeconomic factors may lead to a disproportionate impact on health care usage and death among individuals with congenital heart defects (CHD) by race, ethnicity, and socioeconomic factors. How neighborhood poverty affects racial and ethnic disparities in health care usage and death among individuals with CHD across the life span is not well described.

METHODS AND RESULTS

Individuals aged 1 to 64 years, with at least 1 CHD-related International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) code were identified from health care encounters between January 1, 2011, and December 31, 2013, from 4 US sites. Residence was classified into lower- or higher-poverty neighborhoods on the basis of zip code tabulation area from the 2014 American Community Survey 5-year estimates. Multivariable logistic regression models, adjusting for site, sex, CHD anatomic severity, and insurance-evaluated associations between race and ethnicity, and health care usage and death, stratified by neighborhood poverty. Of 31 542 individuals, 22.2% were non-Hispanic Black and 17.0% Hispanic. In high-poverty neighborhoods, non-Hispanic Black (44.4%) and Hispanic (47.7%) individuals, respectively, were more likely to be hospitalized (adjusted odds ratio [aOR], 1.2 [95% CI, 1.1-1.3]; and aOR, 1.3 [95% CI, 1.2-1.5]) and have emergency department visits (aOR, 1.3 [95% CI, 1.2-1.5] and aOR, 1.8 [95% CI, 1.5-2.0]) compared with non-Hispanic White individuals. In high poverty neighborhoods, non-Hispanic Black individuals with CHD had 1.7 times the odds of death compared with non-Hispanic White individuals in high-poverty neighborhoods (95% CI, 1.1-2.7). Racial and ethnic disparities in health care usage were similar in low-poverty neighborhoods, but disparities in death were attenuated (aOR for non-Hispanic Black, 1.2 [95% CI=0.9-1.7]).

CONCLUSIONS

Racial and ethnic disparities in health care usage were found among individuals with CHD in low- and high-poverty neighborhoods, but mortality disparities were larger in high-poverty neighborhoods. Understanding individual- and community-level social determinants of health, including access to health care, may help address racial and ethnic inequities in health care usage and death among individuals with CHD.

Racial Disparity in Length of Stay Following Implementation of a Bariatric Enhanced Recovery Program

INTRODUCTION

Enhanced Recovery Programs (ERPs) mitigate racial disparities in postoperative length of stay (LOS) for colorectal populations. It is unclear, however, if these effects exist in the bariatric surgery population. Therefore, this study aimed to evaluate the racial disparities in LOS before and after implementation of bariatric surgery ERP.

METHODS

A retrospective cohort study was performed using data from a single institution. Patients undergoing minimally invasive sleeve gastrectomy or Roux-en-Y gastric bypass from 2017 to 2019 (pre-ERP) or 2020-2022 (ERP) were included. Chi-square, Kruskal-Wallis, and analysis of variance were used to compare groups, and estimated LOS (eLOS) was assessed via multivariable regression.

RESULTS

Seven hundred sixty four patients were identified, including 363 pre-ERPs and 401 ERPs. Pre-ERP and ERP cohorts were similar in age (median 44.3 years versus 43.8 years, P = 0.80), race (53.4% Black versus 56.4% Black, P = 0.42), and preoperative body mass index (median 48.3 versus 49.4, P = 0.14). Overall median LOS following bariatric surgery decreased from 2 days pre-ERP to 1 day following ERP (P < 0.001). Average LOS for Black and White patients decreased by 0.5 and 0.48 days, respectively. However, overall eLOS remained greater for Black patients compared with White patients despite ERP implementation (eLOS 0.21 days, P = 0.01).

CONCLUSIONS

Implementation of a bariatric surgery ERP was associated with decreased LOS for both Black and White patients. However, Black patients did have slightly longer LOS than White patients in both pre-ERP and ERP eras. More work is needed to understand the driving mechanism(s) of these disparities to eliminate them.

Racial and Ethnic Disparities in Cardiac Reintervention After Pediatric Cardiac Surgical Procedures

BACKGROUND

Children undergoing cardiac surgical procedures may require postoperative surgical or catheter-based reintervention before discharge. We examined racial/ethnic variations in reintervention and associated in-hospital death.

METHODS

Children undergoing cardiac surgical procedures from 2004 to 2015 were identified in the Pediatric Health Information Systems (PHIS) database. Regression analysis measured associations between race/ethnicity, in-hospital death, and postoperative cardiac surgical or catheter-based reintervention (surgical/catheter reintervention).

RESULTS

Of 124,263 patients, 8265 (6.7%) had a surgical/catheter reintervention. Black patients had fewer reinterventions (5.9% vs 6.7%) and higher in-hospital mortality (3.9% vs 2.7%, P < .01) than White patients. After adjusting for sociodemographic and illness severity indicators, Black patients remained less likely to receive surgical/catheter reintervention (adjusted hazard ratio [aHR], 0.89; 95% CI, 0.82-0.98) despite having similar risk of death after reintervention (adjusted odds ratio, 1.17; 95% CI, 0.98-1.41) compared with White patients. The risk of death without surgical/catheter reintervention was also higher for Black (aHR, 1.26; 95% CI, 1.08-1.47) and other race/ethnicity (aHR, 1.33; 95% CI, 1.13-1.57) patients than for White patients. Similar trends were demonstrated when mechanical circulatory support and cardiac transplantation were included as reinterventions.

CONCLUSIONS

Patients of Black and other race/ethnicity undergoing pediatric cardiac surgical procedures are more likely to die without postoperative cardiac reintervention than White patients. Black patients are also less likely to receive reintervention despite no significant difference in mortality with reintervention. Further studies should evaluate etiologies and methods of addressing these disparities.

Understanding Disparities in the Pediatric ICU: A Scoping Review

BACKGROUND AND OBJECTIVES

Health disparities are pervasive in pediatrics. We aimed to describe disparities among patients who are likely to be cared for in the PICU and delineate how sociodemographic data are collected and categorized.

METHODS

Using MEDLINE as a data source, we identified studies which included an objective to assess sociodemographic disparities among PICU patients in the United States. We created a review rubric, which included methods of sociodemographic data collection and analysis, outcome and exposure variables assessed, and study findings. Two authors reviewed every study. We used the National Institute on Minority Health and Health Disparities Research Framework to organize outcome and exposure variables.

RESULTS

The 136 studies included used variable methods of sociodemographic data collection and analysis. A total of 30 of 124 studies (24%) assessing racial disparities used self- or parent-identified race. More than half of the studies (52%) dichotomized race as white and "nonwhite" or "other" in some analyses. Socioeconomic status (SES) indicators also varied; only insurance status was used in a majority of studies (72%) evaluating SES. Consistent, although not uniform, disadvantages existed for racial minority populations and patients with indicators of lower SES. The authors of only 1 study evaluated an intervention intended to mitigate health disparities. Requiring a stated objective to evaluate disparities aimed to increase the methodologic rigor of included studies but excluded some available literature.

CONCLUSIONS

Variable, flawed methodologies diminish our understanding of disparities in the PICU. Meaningfully understanding and addressing health inequity requires refining how we collect, analyze, and interpret relevant data.

Racial, ethnic, and socio-economic disparities in neonatal ICU admissions among neonates born with cyanotic CHD in the United States, 2009-2018

INTRODUCTION

Disparities in CHD outcomes exist across the lifespan. However, less is known about disparities for patients with CHD admitted to neonatal ICU. We sought to identify sociodemographic disparities in neonatal ICU admissions among neonates born with cyanotic CHD.

MATERIALS & METHODS

Annual natality files from the US National Center for Health Statistics for years 2009-2018 were obtained. For each neonate, we identified sex, birthweight, pre-term birth, presence of cyanotic CHD, and neonatal ICU admission at time of birth, as well as maternal age, race, ethnicity, comorbidities/risk factors, trimester at start of prenatal care, educational attainment, and two measures of socio-economic status (Special Supplemental Nutrition Program for Women, Infants, and Children [WIC] status and insurance type). Multivariable logistic regression models were fit to determine the association of maternal socio-economic status with neonatal ICU admission. A covariate for race/ethnicity was then added to each model to determine if race/ethnicity attenuate the relationship between socio-economic status and neonatal ICU admission.

RESULTS

Of 22,373 neonates born with cyanotic CHD, 77.2% had a neonatal ICU admission. Receipt of WIC benefits was associated with higher odds of neonatal ICU admission (adjusted odds ratio [aOR] 1.20, 95% CI 1.1-1.29, p < 0.01). Neonates born to non-Hispanic Black mothers had increased odds of neonatal ICU admission (aOR 1.20, 95% CI 1.07-1.35, p < 0.01), whereas neonates born to Hispanic mothers were at lower odds of neonatal ICU admission (aOR 0.84, 95% CI 0.76-0.93, p < 0.01).

CONCLUSION

Maternal Black race and low socio-economic status are associated with increased risk of neonatal ICU admission for neonates born with cyanotic CHD. Further work is needed to identify the underlying causes of these disparities.

Effects of Sociodemographic Factors on Access to and Outcomes in Congenital Heart Disease in the United States

Congenital heart defects (CHDs) are complex conditions affecting the heart and/or great vessels that are present at birth. These defects occur in approximately 9 in every 1000 live births. From diagnosis to intervention, care has dramatically improved over the last several decades. Patients with CHDs are now living well into adulthood. However, there are factors that have been associated with poor outcomes across the lifespan of these patients. These factors include sociodemographic and socioeconomic positions. This commentary examined the disparities and solutions within the evolution of CHD care in the United States.

Age moderates change in disease-related stress among congenital heart disease survivors: a 6-year follow-up

AIMS

As congenital heart disease (CHD) survivors age, they are confronted with elevated risk of cardiovascular morbidity and increasingly complex disease self-management demands. Given that stress is associated with poor physical and psychosocial outcomes, it is crucial to examine how disease-related stress changes over time in this population. However, this outcome has received little research attention to date. This study aimed to identify demographic and clinical predictors of change in disease-related stress over 6 years among CHD survivors.

METHODS AND RESULTS

Congenital heart disease survivors (N = 252, Mage = 25.6 ± 7.1, 52.9% female) completed the first 13 items of the Responses to Stress Questionnaire, adapted for use among CHD survivors, to assess disease-related stressors at study entry (T1) and 6-year follow-up (T2). Age, gender, estimated family income, and New York Heart Association (NYHA) functional class at T1 were entered into mixed linear models to determine their impact on change in disease-related stress. Older age (P < 0.001), lower income (P < 0.001), and presence of functional limitations (NYHA ≥ II) (P < 0.001) predicted greater increases in disease-related stress. When controlling for NYHA, functional class, and income, a significant time by age interaction was identified such that disease-related stress increased over time among those who were adolescents at T1 [b = 4.20, P = 0.010, 95% confidence interval (1.01, 7.40)], but remained stable among young adults.

CONCLUSION

The transition from adolescence to adulthood may be a period of increasing disease-related stress. Healthcare providers should consider screening adolescents for elevated disease-related stress during transition education and provide resources to bolster resilience.

Meta-Analysis of Racial Disparity in Clinical Outcome Among Congenital Heart Disease Patients Postsurgery

Congenital heart disease (CHD), the most prevalent congenital disorder in newborns, is a leading cause of infant mortality. Mortality rates have declined over time with advancements in knowledge and management approaches. Despite these advancements, studies on racial disparities in CHD surgical mortality have yielded inconclusive results. We aim to evaluate the disparity among the clinical outcomes post-CHD surgery. A comprehensive literature search was conducted on PubMed, Embase, and Scopus utilizing predefined MeSH terms coupled with Boolean operators "AND" and "OR." The search strategy included the terms "congenital heart disease" AND "racial disparity" OR "minorities" OR "Black" OR "White" AND "mortality." Our meta-analysis sought observational studies published from inception until 10th March 2023 reporting post-surgical incidence of mortality in Black and White patients with CHD. We identified 5 studies, including 79616 patients with CHD. Of these, 15,124 Black patients and 64,492 White patients who underwent for CHD surgery. All included patients were less than 18 years of age with a definitive diagnosis of CHD. The mean length of the hospital stay was (11.5 vs 10.10) days, respectively. The pooled analysis showed that Black patients with CHD have significantly higher odds of postoperative mortality (OR, 1.46 (95%CI: 1.31-1.62), P < 0.001) with low heterogeneity across the studies. This very first meta-analysis shows that Black patients are at increased risk of mortality post-CHD surgery compared to White patients. These disparities need to be addressed, and proper guidelines need to be made with better medical infrastructure and treatment options for racial minority groups.

Racial Disparities in Failure to Rescue after Pediatric Heart Surgeries in the US

OBJECTIVE

To identify the trend in failure to rescue (FTR) and risk factors contributing to racial disparities in FTR after pediatric heart surgery using contemporary nationwide data.

STUDY DESIGN

We identified 85 267 congenital heart surgeries in patients <18 years of age from 2009 to 2019 using the Kid's Inpatient Database. The primary outcome was FTR. A mixed-effect logistic regression model with hospital random intercept was used to identify independent predictors of FTR.

RESULTS

Among 36 753 surgeries with postoperative complications, the FTR was 7.3%. The FTR decreased from 7.4% in 2009 to 6.3% in 2019 (P = .02). FTR was higher among Black than White children for all years. The FTR was higher among girls (7.2%) vs boys (6.6%), children aged <1 (9.6%) vs 12-17 years (2.4%), and those of Black (8.5%) vs White race (5.9%) (all P < .05). Black race was associated with a higher FTR odds (OR, 1.40; 95% CI, 1.20-1.65) after adjusting for demographics, medical complexity, nonelective admission, and hospital surgical volume. Higher hospital volume was associated with a lower odds of FTR for all racial groups, but fewer Black (19.7%) vs White (31%) children underwent surgery at high surgical volume hospitals (P < .001). If Black children were operated on in the same hospitals as White children, the racial differences in FTR would decrease by 47.3%.

CONCLUSIONS

Racial disparities exist in FTR after pediatric heart surgery in the US. The racial differences in the location of care may account for almost half the disparities in FTR.

Racial and Ethnic Variation in ECMO Utilization and Outcomes in Pediatric Cardiac ICU Patients

Background

Previous studies have reported racial disparities in extracorporeal membrane oxygenation (ECMO) utilization in pediatric cardiac patients.

Objectives

The objective of this study was to determine if there was racial/ethnic variation in ECMO utilization and, if so, whether mortality was mediated by differences in ECMO utilization.

Methods

This is a multicenter, retrospective cohort study of the Pediatric Cardiac Critical Care Consortium clinical registry. Analyses were stratified by hospitalization type (medical vs surgical). Logistic regression models were adjusted for confounders and evaluated the association between race/ethnicity with ECMO utilization and mortality. Secondary analyses explored interactions between race/ethnicity, insurance, and socioeconomic status with ECMO utilization and mortality.

Results

A total of 50,552 hospitalizations from 34 hospitals were studied. Across all hospitalizations, 2.9% (N = 1,467) included ECMO. In medical and surgical hospitalizations, Black race and Hispanic ethnicity were associated with severity of illness proxies. In medical hospitalizations, race/ethnicity was not associated with the odds of ECMO utilization. Hospitalizations of other race had higher odds of mortality (adjusted odds ratio [aOR]: 1.61; 95% CI: 1.22-2.12; P = 0.001). For surgical hospitalizations, Black (aOR: 1.24; 95% CI: 1.02-1.50; P = 0.03) and other race (aOR: 1.50; 95% CI: 1.17-1.93; P = 0.001) were associated with higher odds of ECMO utilization. Hospitalizations of Hispanic patients had higher odds of mortality (aOR: 1.31; 95% CI: 1.03-1.68; P = 0.03). No significant interactions were demonstrated between race/ethnicity and socioeconomic status indicators with ECMO utilization or mortality.

Conclusions

Black and other races were associated with increased ECMO utilization during surgical hospitalizations. There were racial/ethnic disparities in outcomes not explained by differences in ECMO utilization. Efforts to mitigate these important disparities should include other aspects of care.

Social inequities impact infant mortality due to congenital heart disease

OBJECTIVES

To evaluate how educational, economic, and racial residential segregation may impact congenital heart disease infant mortality (CHD-IM).

STUDY DESIGN

This is a population-based US ecological study.

METHODS

This study evaluated linked live birth-infant death files from the National Center for Health Statistics for live births from 2006 to 2018 with cause of death attributed to CHD. Maternal race and education data were obtained from the live birth-infant death files, and income data were obtained from the American Community Survey. A spatial social polarization measure termed the Index of Concentration at the Extremes (ICE) was calculated and split by quintiles for maternal education, household income, and race for all US counties (n = 3142). The lowest quintile represents counties with highest concentration of disadvantaged groups (income < $25K, non-Hispanic Black, no high school degree). Proximity to a pediatric cardiac center (PCC) was also analyzed in a categorical manner based on whether each county was in a metropolitan area with a US News and World Report top 50 ranked PCC, a lower ranked PCC, or not proximal to any PCC.

RESULTS

Between 2006 and 2018, 17,489 infant deaths were due to CHD, an unadjusted CHD-IM of 0.33 deaths per 1000 live births. The risk of CHD-IM was 1.5 times greater among those in the lowest ICE-education quintile (0.41 [0.39-0.44] vs 0.28 deaths/1000 live births [0.27-0.29], P < 0.0001) and the lowest ICE-income quintile (0.44 [0.41-0.47] vs 0.29 [0.28-0.30], P < 0.0001) in comparison to those in the highest quintiles. CHD-IM increases with higher ICE-race value (counties with a higher concentration of non-Hispanic White mothers). However, after adjusting for proximity to a US News and World Report top 50 ranked PCC in the multivariable models, CHD-IM decreases with higher ICE-race value.

CONCLUSIONS

Counties with the highest concentration of lower-educated mothers and the highest concentration of low-income households were associated with higher rates of CHD-IM. Mortality as a function of race is more complicated and requires further investigation.

Mutations in genes related to myocyte contraction and ventricular septum development in non-syndromic tetralogy of Fallot

Objective

Eighty percent of patients with a diagnosis of tetralogy of Fallot (TOF) do not have a known genetic etiology or syndrome. We sought to identify key molecular pathways and biological processes that are enriched in non-syndromic TOF, the most common form of cyanotic congenital heart disease, rather than single driver genes to elucidate the pathogenesis of this disease.

Methods

We undertook exome sequencing of 362 probands with non-syndromic TOF and their parents within the Pediatric Cardiac Genomics Consortium (PCGC). We identified rare (minor allele frequency <1 × 10-4), de novo variants to ascertain pathways and processes affected in this population to better understand TOF pathogenesis. Pathways and biological processes enriched in the PCGC TOF cohort were compared to 317 controls without heart defects (and their parents) from the Simons Foundation Autism Research Initiative (SFARI).

Results

A total of 120 variants in 117 genes were identified as most likely to be deleterious, with CHD7, CLUH, UNC13C, and WASHC5 identified in two probands each. Gene ontology analyses of these variants using multiple bioinformatic tools demonstrated significant enrichment in processes including cell cycle progression, chromatin remodeling, myocyte contraction and calcium transport, and development of the ventricular septum and ventricle. There was also a significant enrichment of target genes of SOX9, which is critical in second heart field development and whose loss results in membranous ventricular septal defects related to disruption of the proximal outlet septum. None of these processes was significantly enriched in the SFARI control cohort.

Conclusion

Innate molecular defects in cardiac progenitor cells and genes related to their viability and contractile function appear central to non-syndromic TOF pathogenesis. Future research utilizing our results is likely to have significant implications in stratification of TOF patients and delivery of personalized clinical care.

Neighborhood Childhood Opportunity, Race/Ethnicity, and Surgical Outcomes in Children With Congenital Heart Disease

BACKGROUND

Racial and ethnic disparities in outcomes for children with congenital heart disease (CHD) coexist with disparities in educational, environmental, and economic opportunity.

OBJECTIVES

We sought to determine the associations between childhood opportunity, race/ethnicity, and pediatric CHD surgery outcomes.

METHODS

Pediatric Health Information System encounters aged <18 years from 2016 to 2022 with International Classification of Diseases-10th edition codes for CHD and cardiac surgery were linked to ZIP code-level Childhood Opportunity Index (COI), a score of neighborhood educational, environmental, and socioeconomic conditions. The associations of race/ethnicity and COI with in-hospital surgical death were modeled with generalized estimating equations and formal mediation analysis. Neonatal survival after discharge was modeled by Cox proportional hazards.

RESULTS

Of 54,666 encounters at 47 centers, non-Hispanic Black (Black) (OR: 1.20; P = 0.01), Asian (OR: 1.75; P < 0.001), and Other (OR: 1.50; P < 0.001) groups had increased adjusted mortality vs non-Hispanic Whites. The lowest COI quintile had increased in-hospital mortality in unadjusted and partially adjusted models (OR: 1.29; P = 0.004), but not fully adjusted models (OR: 1.14; P = 0.13). COI partially mediated the effect of race/ethnicity on in-hospital mortality between 2.6% (P = 0.64) and 16.8% (P = 0.029), depending on model specification. In neonatal multivariable survival analysis (n = 13,987; median follow-up: 0.70 years), the lowest COI quintile had poorer survival (HR: 1.21; P = 0.04).

CONCLUSIONS

Children in the lowest COI quintile are at risk for poor outcomes after CHD surgery. Disproportionally increased mortality in Black, Asian, and Other populations may be partially mediated by COI. Targeted investment in low COI neighborhoods may improve outcomes after hospital discharge. Identification of unmeasured factors to explain persistent risk attributed to race/ethnicity is an important area of future exploration.

Using days alive and out of hospital to measure surgical outcomes in New Zealand: a cross-sectional study

OBJECTIVES

To measure differences at various deciles in days alive and out of hospital to 90 days (DAOH₉₀) and explore its utility for identifying outliers of performance among district health boards (DHBs).

METHODS

Days in hospital and mortality within 90 days of surgery were extracted by linking data from the New Zealand National Minimum Data Set and the births and deaths registry between 1 January 2011 and 31 December 2021 for all adults in New Zealand undergoing acute laparotomy (AL-a relatively high-risk group), elective total hip replacement (THR-a medium risk group) or lower segment caesarean section (LSCS-a low-risk group). DAOH₉₀ was calculated without censoring to zero in cases of mortality. For each DHB, direct risk standardisation was used to adjust for potential confounders and presented in deciles according to baseline patient risk. The Mann-Whitney U test assessed overall DAOH₉₀ differences between DHBs, and comparisons are presented between selected deciles of DAOH₉₀ for each operation.

RESULTS

We obtained national data for 35 175, 52 032 and 117 695 patients undergoing AL, THR and LSCS procedures, respectively. We have demonstrated that calculating DAOH without censoring zero allows for differences between procedures and DHBs to be identified. Risk-adjusted national mean DAOH₉₀ Scores were 64.0 days, 79.0 days and 82.0 days at the 0.1 decile and 75.0 days, 82.0 days and 84.0 days at the 0.2 decile for AL, THR and LSCS, respectively, matching to their expected risk profiles. Differences between procedures and DHBs were most marked at lower deciles of the DAOH₉₀ distribution, and outlier DHBs were detectable. Corresponding 90-day mortality rates were 5.45%, 0.78% and 0.01%.

CONCLUSION

In New Zealand after direct risk adjustment, differences in DAOH₉₀ between three types of surgical procedure reflected their respective risk levels and associated mortality rates. Outlier DHBs were identified for each procedure. Thus, our approach to analysing DAOH₉₀ appears to have considerable face validity and potential utility for contributing to the measurement of perioperative outcomes in an audit or quality improvement setting.

Neighborhood socioeconomic status and length of stay after congenital heart disease surgery

Background and Objectives

Socioeconomic factors are associated with health outcomes and can affect postoperative length of stay after congenital heart disease (CHD) surgery. The hypothesis of this study is that patients from neighborhoods with a disadvantaged socioeconomic status (SES) have a prolonged length of hospital stay after CHD surgery.

Methods

Pre- and postoperative data were collected on patients who underwent CHD surgery at the University of Maryland Medical Center between 2011 and 2019. A neighborhood SES score was calculated for each patient using data from the United States Census Bureau and patients were grouped by high vs. low SES neighborhoods. The difference of patient length of stay (LOS) from the Society for Thoracic Surgeons median LOS for that surgery was the primary outcome measure. Linear regression was performed to examine the association between the difference from the median LOS and SES, as well as other third variables.

Results

The difference from the median LOS was -4.8 vs. -2.2 days in high vs. low SES groups (p = 0.003). SES category was a significant predictor of LOS in unadjusted and adjusted regression analyses. There was a significant interaction between Norwood operation and SES-patients with a low neighborhood SES who underwent Norwood operation had a longer LOS, but there was no difference in LOS by SES in patients who underwent other operations.

Conclusions

Neighborhood SES is a significant predictor of the LOS after congenital heart disease surgery. This effect was seen primarily in patients undergoing Norwood operation.

Disparities in 1-Year-Mortality in Infants With Cyanotic Congenital Heart Disease: Insights From Contemporary National Data

BACKGROUND

Racial inequities in congenital heart disease (CHD) outcomes are well documented, but contributing factors warrant further investigation. We examined the interplay between race, socioeconomic position, and neonatal variables (prematurity and small for gestational age) on 1-year death in infants with CHD. We hypothesize that socioeconomic position mediates a significant part of observed racial disparities in CHD outcomes.

METHODS

Linked birth/death files from the Natality database for all liveborn neonates in the United States were examined from 2014 to 2018. Infants with cyanotic CHD were identified. Non-Hispanic Black (NHB) and Hispanic infants were compared with non-Hispanic White (NHW) infants. The primary outcome was 1-year death. Socioeconomic position was defined as maternal education and insurance status. Variables included as mediators were prematurity, small for gestational age, and socioeconomic position. Structural equation modeling was used to calculate the contribution of each mediator to the disparity in 1-year death.

RESULTS

We identified 7167 NHW, 1393 NHB, and 1920 Hispanic infants with cyanotic CHD. NHB race and Hispanic ethnicity were associated with increased 1-year death compared to NHW (OR, 1.43 [95% CI, 1.25-1.64] and 1.17 [95% CI, 1.03-1.33], respectively). The effect of socioeconomic position explained 28.2% (CI, 15.1-54.8) of the death disparity between NHB and NHW race and 100% (CI, 42.0-368) of the disparity between Hispanic and NHW. This was mainly driven by maternal education (21.3% [CI, 12.1-43.3] and 82.8% [CI, 33.1-317.8], respectively) while insurance status alone did not explain a significant percentage. The direct effect of race or ethnicity became nonsignificant: NHB versus NHW 43.1% (CI, -0.3 to 63.6) and Hispanic versus NHW -19.0% (CI, -329.4 to 45.3).

CONCLUSIONS

Less privileged socioeconomic position, especially lower maternal education, explains a large portion of the 1-year death disparity in Black and Hispanic infants with CHD. These findings identify targets for social interventions to decrease racial disparities.

Long-Term Health Care Utilization After Cardiac Surgery in Children Covered Under Medicaid

BACKGROUND

Understanding the longitudinal burden of health care expenditures and utilization after pediatric cardiac surgery is needed to counsel families, improve care, and reduce outcome inequities.

OBJECTIVES

The purpose of this study was to describe and identify predictors of health care expenditures and utilization for Medicaid-insured pediatric cardiac surgical patients.

METHODS

All Medicaid enrolled children age <18 years undergoing cardiac surgery in the New York State CHS-COLOUR database, from 2006 to 2019, were followed in Medicaid claims data through 2019. A matched cohort of children without cardiac surgical disease was identified as comparators. Expenditures and inpatient, primary care, subspecialist, and emergency department utilization were modeled using log-linear and Poisson regression models to assess associations between patient characteristics and outcomes.

RESULTS

In 5,241 New York Medicaid-enrolled children, longitudinal health care expenditures and utilization for cardiac surgical patients exceeded noncardiac surgical comparators (cardiac surgical children: $15,500 ± $62,000 per month in year 1 and $1,600 ± $9,100 per month in year 5 vs noncardiac surgical children: $700 ± $6,600 per month in year 1 and $300 ± $2,200 per month in year 5). Children after cardiac surgery spent 52.9 days in hospitals and doctors' offices in the first postoperative year and 90.5 days over 5 years. Being Hispanic, compared with non-Hispanic White, was associated with having more emergency department visits, inpatient admissions, and subspecialist visits in years 2 to 5, but fewer primary care visits and greater 5-year mortality.

CONCLUSIONS

Children after cardiac surgery have significant longitudinal health care needs, even among those with less severe cardiac disease. Health care utilization differed by race/ethnicity, although mechanisms driving disparities should be investigated further.

Factors influencing the choice-of-care pathway and survival in the fetus with hypoplastic left heart syndrome in New Zealand: a population-based cohort study

OBJECTIVES

To better understand the relative influence of fetal and maternal factors in determining the choice-of-care pathway (CCP) and outcome in the fetus with hypoplastic left heart syndrome (HLHS).

DESIGN

A retrospective, population-based study of fetuses with HLHS from a national dataset with near-complete case ascertainment from 20 weeks' gestation. Fetal cardiac and non-cardiac factors were recorded from the patient record and maternal factors from the national maternity dataset. The primary endpoint was a prenatal decision for active treatment after birth (intention-to-treat). Factors associated with a delayed diagnosis (≥24 weeks' gestation) were also reviewed. Secondary endpoints included proceeding to surgical treatment, and 30-day postoperative mortality in liveborns with an intention-to-treat.

SETTING

New Zealand population-wide.

PARTICIPANTS

Fetuses with a prenatal diagnosis of HLHS between 2006 and 2015.

RESULTS

Of 105 fetuses, the CCP was intention-to-treat in 43 (41%), and pregnancy termination or comfort care in 62 (59%). Factors associated with intention-to-treat by multivariable analysis included a delay in diagnosis (OR: 7.8, 95% CI: 3.0 to 20.6, p<0.001) and domicile in the maternal fetal medicine (MFM) region with the most widely dispersed population (OR: 5.3, 95% CI: 1.4 to 20.3, p=0.02). Delay in diagnosis was associated with Māori maternal ethnicity compared with European (OR: 12.9, 95% CI: 3.1 to 54, p<0.001) and greater distance from the MFM centre (OR: 3.1, 95% CI: 1.2 to 8.2, p=0.02). In those with a prenatal intention-to-treat, a decision not to proceed to surgery was associated with maternal ethnicity other than European (p=0.005) and the presence of major non-cardiac anomalies (p=0.01). Thirty-day postoperative mortality occurred in 5/32 (16%) and was more frequent when there were major non-cardiac anomalies (p=0.02).

CONCLUSIONS

Factors associated with the prenatal CCP relate to healthcare access. Anatomic characteristics impact treatment decisions after birth and early postoperative mortality. The association of ethnicity with delayed prenatal diagnosis and postnatal decision-making suggests systemic inequity and requires further investigation.

Racial and Ethnic Disparities in Outcomes Among Newborns with Congenital Diaphragmatic Hernia

Importance

There is some data to suggest that racial and ethnic minority infants with congenital diaphragmatic hernia (CDH) have poorer clinical outcomes.

Objective

To determine what patient- and institutional-level factors are associated with racial and ethnic differences in CDH mortality.

Design, Setting, and Participants

Multicenter cohort study of 49 US children's hospitals using the Pediatric Health Information System database from January 1, 2015, to December 31, 2020. Participants were patients with CDH admitted on day of life 0 who underwent surgical repair. Patient race and ethnicity were guardian-reported vs hospital assigned as Black, Hispanic (White or Black), or White. Data were analyzed from August 2021 to March 2022.

Exposures

Patient race and ethnicity: (1) White vs Black and (2) White vs Hispanic; and institutional-level diversity (as defined by the percentage of Black and Hispanic patients with CDH at each hospital): (1) 30% or less, (2) 31% to 40%, and (3) more than 40%.

Main Outcomes and Measures

The primary outcomes were in-hospital and 60-day mortality. The study hypothesized that hospitals managing a more racially and ethnically diverse population of patients with CDH would be associated with lower mortality among Black and Hispanic infants.

Results

Among 1565 infants, 188 (12%), 306 (20%), and 1071 (68%) were Black, Hispanic, and White, respectively. Compared with White infants, Black infants had significantly lower gestational ages (mean [SD], White: 37.6 [2] weeks vs Black: 36.6 [3] weeks; difference, 1 week; 95% CI for difference, 0.6-1.4; P < .001), lower birthweights (White: 3.0 [1.0] kg vs Black: 2.7 [1.0] kg; difference, 0.3 kg; 95% CI for difference, 0.2-0.4; P < .001), and higher extracorporeal life support use (White: 316 patients [30%] vs Black: 69 patients [37%]; χ21 = 3.9; P = .05). Black infants had higher 60-day (White: 99 patients [9%] vs Black: 29 patients [15%]; χ21 = 6.7; P = .01) and in-hospital (White: 133 patients [12%] vs Black: 40 patients [21%]; χ21 = 10.6; P = .001) mortality . There were no mortality differences in Hispanic patients compared with White patients. On regression analyses, institutional diversity of 31% to 40% in Black patients (hazard ratio [HR], 0.17; 95% CI, 0.04-0.78; P = .02) and diversity greater than 40% in Hispanic patients (HR, 0.37; 95% CI, 0.15-0.89; P = .03) were associated with lower mortality without altering outcomes in White patients.

Conclusions and Relevance

In this cohort study of 1565 who underwent surgical repair patients with CDH, Black infants had higher 60-day and in-hospital mortality after adjusting for disease severity. Hospitals treating a more racially and ethnically diverse patient population were associated with lower mortality in Black and Hispanic patients.

Insurance-Based Disparities in Congenital Cardiac Operations in the Era of the Affordable Care Act

A body of literature has previously highlighted the impact of health insurance on observed disparities in congenital cardiac operations. With aims of improving access to healthcare for all patients, the Affordable Care Act (ACA) expanded Medicaid coverage to nearly all eligible children in 2010. Therefore, the present population-based study aimed to examine the association of Medicaid coverage with clinical and financial outcomes in the era the ACA. Records for pediatric patients (≤ 18 years) who underwent congenital cardiac operations were abstracted from the 2010-2018 Nationwide Readmissions Database. Operations were stratified using the Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery (STAT) Category. Multivariable regression models were developed to evaluate the association of insurance status on index mortality, 30-day readmissions, care fragmentation, and cumulative costs. Of an estimated 132,745 hospitalizations for congenital cardiac surgery from 2010 to 2018, 74,925 (56.4%) were insured by Medicaid. The proportion of Medicaid patients increased from 57.6 to 60.8% during the study period. On adjusted analysis, patients with Medicaid insurance were at an increased odds of mortality (1.35, 95%CI: 1.13-1.60) and 30-day unplanned readmission (1.12, 95%CI: 1.01-1.25), experienced longer lengths of stay (+ 6.5 days, 95%CI 3.7-9.3), and exhibited higher cumulative hospitalization costs (+ $21,600, 95%CI: $11,500-31,700). The total hospitalization cost-burden for patients with Medicaid and private insurance were $12.6 billion and $8.06 billion, respectively. Medicaid patients exhibited increased mortality, readmissions, care fragmentation, and costs compared to those with private insurance. Our results of outcome variation by insurance status indicate the necessity of policy changes to attempt to approach equality in surgical out comes for this high-risk cohort. Baseline characteristics, trends, and outcomes by insurance status over the ACA rollout period 2010-2018.

Association Between Race, Gender, and Pediatric Postoperative Outcomes: An Updated Retrospective Review

INTRODUCTION

There has not been a recent evaluation of the association between racial and gender and surgical outcomes in children. We aimed to evaluate improvements in race- and gender-related pediatric postoperative outcomes since a report utilizing the Kids' Inpatient Database data from 2003 to 2006.

METHODS

Using Kids' Inpatient Database (2009, 2012, 2016), we identified 245,976 pediatric patients who underwent appendectomy for acute appendicitis (93.6%), pyloromyotomy for pyloric stenosis (2.7%), empyema decortication (1.6%), congenital diaphragmatic hernia repair (0.7%), small bowel resection for intussusception (0.5%), or colonic resection for Hirschsprung disease (0.2%). The primary outcome was the development of postoperative complications. Multivariable logistic regression was used to evaluate risk-adjusted associations among race, gender, income, and postoperative complications.

RESULTS

Most patients were male (61.5%) and 45.7% were White. Postoperative complications were significantly associated with male gender (P < 0.0001) and race (P < 0.0001). After adjustment, Black patients were more likely to experience any complication than White patients (adjusted odds ratio 1.3, confidence interval 1.2-1.4), and males were more likely than females (adjusted odds ratio 1.3, confidence interval 1.2-1.4).

CONCLUSIONS

No clear progress has been made in eliminating race- or gender-based disparities in pediatric postoperative outcomes. New strategies are needed to better understand and address these disparities.

Health Disparities in the Treatment of Supraventricular Tachycardia in Pediatric Patients

Supraventricular tachycardia (SVT) is a common pediatric arrhythmia. The objective of this investigation was to investigate the existence and degree of the health disparities in the treatment of pediatric patients with supraventricular tachycardia based on sociodemographic factors. This was retrospective cohort study at a large academic medical center including children ages 5-18 years old diagnosed with SVT. Patients with congenital heart disease and myocarditis were excluded. Initial treatment and ultimate treatment with either medical management or ablation were determined. The odds of having an ablation procedure were determined based on patient age, sex, race, ethnicity, and insurance status. There was a larger portion of non-White patients (p = 0.033) within the cohort that did not receive an ablation during the study period. Patients that were younger, female, American Indian/Alaskan Native, unknown race, and had missing insurance information were less likely to receive ablation therapy during the study period. In this single center, regional evaluation, we demonstrated that disparities in the treatment of pediatric SVT are present based on multiple patient sociodemographic factors. This study adds evidence to the presence of inequities in health care delivery across pediatric populations.

Adverse Maternal Fetal Environment Partially Mediates Disparate Outcomes in Non-White Neonates with Major Congenital Heart Disease

OBJECTIVE

To determine whether differential exposure to an adverse maternal fetal environment partially explains disparate outcomes in infants with major congenital heart disease (CHD).

STUDY DESIGN

Retrospective cohort study utilizing a population-based administrative California database (2011-2017). Primary exposure: Race/ethnicity. Primary mediator: Adverse maternal fetal environment (evidence of maternal metabolic syndrome and/or maternal placental syndrome).

OUTCOMES

Composite of 1-year mortality or severe morbidity and days alive out of hospital in the first year of life (DAOOH). Mediation analyses determined the percent contributions of mediators on pathways between race/ethnicity and outcomes after adjusting for CHD severity.

RESULTS

Included were 2747 non-Hispanic White infants (reference group), 5244 Hispanic, and 625 non-Hispanic Black infants. Hispanic and non-Hispanic Black infants had a higher risk for composite outcome (crude OR: 1.18; crude OR: 1.25, respectively) and fewer DAOOH (-6 & -12 days, respectively). Compared with the reference group, Hispanic infants had higher maternal metabolic syndrome exposure (43% vs 28%, OR: 1.89), and non-Hispanic Black infants had higher maternal metabolic syndrome (44% vs 28%; OR: 1.97) and maternal placental syndrome exposure (18% vs 12%; OR, 1.66). Both maternal metabolic syndrome exposure (OR: 1.21) and maternal placental syndrome exposure (OR: 1.56) were related to composite outcome and fewer DAOOH (-25 & -16 days, respectively). Adverse maternal fetal environment explained 25% of the disparate relationship between non-Hispanic Black race and composite outcome and 18% of the disparate relationship between Hispanic ethnicity and composite outcome. Adverse maternal fetal environment explained 16% (non-Hispanic Black race) and 21% (Hispanic ethnicity) of the association with DAOOH.

CONCLUSIONS

Increased exposure to adverse maternal fetal environment contributes to racial and ethnic disparities in major CHD outcomes.

Disparities in Loss to Follow-Up Among Adults With Congenital Heart Disease in North Carolina

Background

The AHA/ACC Adult Congenital Heart Disease guidelines recommend that most adults with congenital heart disease (CHD) follow-up with CHD cardiologists every 1 to 2 years because longer gaps in care are associated with adverse outcomes. This study aimed to determine the proportion of patients in North Carolina who did not have recommended follow-up and to explore predictors of loss to follow-up.

Methods

Patients ages ≥18 years with a healthcare encounter from 2008 to 2013 in a statewide North Carolina database with an ICD-9 code for CHD were assessed. The proportion with cardiology follow-up within 24 months following index encounter was assessed with Kaplan-Meier estimates. Cox regression was utilized to identify demographic factors associated with differences in follow-up.

Results

2822 patients were identified. Median age was 35 years; 55% were female. 70% were white, 22% black, and 3% Hispanic; 36% had severe CHD. The proportion with 2-year cardiology follow-up was 61%. Those with severe CHD were more likely to have timely follow-up than those with less severe CHD (72% vs 55%, P < .01). Black patients had a lower likelihood of follow-up than white patients (56% vs 64%, P = .01). Multivariable Cox regression identified younger age, non-severe CHD, and non-white race as risk factors for a lower likelihood of follow-up by 2 years.

Conclusion

39% of adults with CHD in North Carolina are not meeting AHA/ACC recommendations for follow-up. Younger and minority patients and those with non-severe CHD were particularly vulnerable to inadequate follow-up; targeted efforts to retain these patients in care may be helpful.

Contemporary Socioeconomic and Childhood Opportunity Disparities in Congenital Heart Surgery

BACKGROUND

While singular measures of socioeconomic status have been associated with outcomes after surgery for congenital heart disease, the multifaceted pathways through which a child's environment impacts similar outcomes remain incompletely characterized. We sought to evaluate the association between childhood opportunity level and adverse outcomes after congenital heart surgery.

METHODS

Data from patients undergoing congenital cardiac surgery from January 2011 to January 2020 at a quaternary referral center were retrospectively reviewed. Outcomes of interest included predischarge (early) mortality or transplant, postoperative hospital length-of-stay, inpatient cost of hospitalization, postdischarge (late) mortality or transplant, and late unplanned reintervention. The primary predictor was a US census tract-based, nationally-normed composite metric of contemporary child neighborhood opportunity comprising 29 indicators across 3 domains (education, health and environment, and socioeconomic), categorized as very low, low, moderate, high, and very high. Associations between childhood opportunity level and outcomes were evaluated using logistic regression (early mortality), generalized linear (length-of-stay and cost), Cox proportional hazards (late mortality), or competing risk (late reintervention) models, adjusting for baseline patient-related factors, case complexity, and residual lesion severity.

RESULTS

Of 6133 patients meeting entry criteria, the median age was 2.0 years (interquartile range, 3.6 months-8.3 years). There were 124 (2.0%) early deaths or transplants, the median postoperative length-of-stay was 7 days (interquartile range, 5-13 days), and the median inpatient cost was $76 000 (interquartile range, $50 000-130 000). No significant association between childhood opportunity level and early mortality or transplant was observed (P=0.21). On multivariable analysis, children with very low and low opportunity had significantly longer length-of-stay and incurred higher costs compared with those with very high opportunity (all P<0.05). Of 6009 transplant-free survivors of hospital discharge, there were 175 (2.9%) late deaths or transplants, and 1008 (16.8%) reinterventions at up to 10.5 years of follow-up. Patients with very low opportunity had a significantly greater adjusted risk of late death or transplant (hazard ratio, 1.7 [95% CI, 1.1-2.6]; P=0.030) and reintervention (subdistribution hazard ratio, 1.9 [95% CI, 1.5-2.3]; P<0.001), versus those with very high opportunity.

CONCLUSIONS

Childhood opportunity level is independently associated with adverse outcomes after congenital heart surgery. Children from resource-limited settings thus constitute an especially high-risk cohort that warrants closer surveillance and tailored interventions.

Outcomes for unplanned reinterventions following paediatric cardiac surgery for tetralogy of Fallot

BACKGROUND

Advances in surgical techniques and post-operative management of children with CHD have significantly lowered mortality rates. Unplanned cardiac interventions are a significant complication with implications on morbidity and mortality.

METHODS

We conducted a single-centre retrospective case-control study for patients (<18 years) undergoing cardiac surgery for repair of Tetralogy of Fallot between January 2009 and December 2019. Data included patient characteristics, operative variables and outcomes. This study aimed to assess the incidence and risk factors for reintervention of Tetralogy of Fallot after cardiac surgery. The secondary outcome was to examine the incidence of long-term morbidity and mortality in those who underwent unplanned reinterventions.

RESULTS

During the study period 29 patients (6.8%) underwent unplanned reintervention, and were matched to 58 patients by age, weight and sex. Median age was 146 days, and median weight was 5.8 kg. Operative mortality was 7%, and 1-year survival was 86% for the entire cohort (cases and controls). Hispanic patients were more likely to have reinterventions (p = 0.04) in the unadjusted analysis, while Asian, Pacific Islander and Native American (p = 0.01) in the multi-variate analysis. Patients that underwent reintervention were more likely to have post-op arrhythmia, genetic syndromes and higher operative and 1-year mortality (p < 0.05).

CONCLUSION

Unplanned cardiac interventions following Tetralogy of Fallot repair are common, and associated with increased operative, and 1-year mortality. Race, genetic syndromes and post-operative arrhythmia are associated with increased odds of unplanned reinterventions. Future studies are needed to identify modifiable risk factors to minimise unplanned reinterventions.

Evaluation of Fontan-associated Liver Disease and Ethnic Disparities in Long-term Survivors of the Fontan Procedure: A Population-based Study

OBJECTIVES

Fontan-associated liver disease (FALD) has emerged as a nearly universal chronic comorbidity in patients with univentricular congenital heart disease who undergo the Fontan procedure. There is a paucity of data reporting long-term outcomes and the impact of FALD in this population.

METHODS

Patients who underwent the Fontan procedure between 1992 and 2018 were identified using California registry data. Presumed FALD was assessed by a composite of liver disease codes. Primary outcomes were mortality and transplant. Multivariable regression and survival analyses were performed.

RESULTS

Among 1436 patients post-Fontan, 75.9% studied were adults, with a median follow-up of 12.6 (8.4, 17.3) years. The population was 46.3% Hispanic. Overall survival at 20 years was >80%, but Hispanic patients had higher mortality risk compared with White patients [hazard ratio: 1.49 (1.09-2.03), P =0.012]. Only 225 patients (15.7%) had presumed FALD, although >54% of patients had liver disease by age 25. FALD was associated with later deaths [median: 9.6 (6.4-13.2) years post-Fontan] compared with patients who died without liver disease [4.1 (1.4-10.4) years, P =0.02]. Patients with FALD who underwent combined heart liver transplant had 100% survival at 5 years, compared with only 70.7% of patients who underwent heart transplant alone.

CONCLUSIONS

In this population-based analysis of long-term outcomes post-Fontan, Hispanic ethnicity was associated with increased all-cause mortality. Further, the prevalence of FALD is underrecognized, but our data confirms that its incidence increases with age. FALD is associated with late mortality but excellent posttransplant survival. This emphasizes the need for FALD-specific liver surveillance strategies in patients post-Fontan.

Disparities in surgical outcomes of neonates with congenital heart disease across regions, centers, and populations

OBJECTIVE

To summarize existing literature on neonatal disparities in congenital heart disease surgical outcomes and identify potential policies to address these disparities.

FINDING

Disparities in outcomes for neonatal congenital heart surgery were largely published under four domains: race/ethnicity, insurance type, neighborhood/socioeconomic status, and cardiac center characteristics. While existing research identifies associations between these domains and mortality, more nuanced analyses are emerging to understand the mediators between these domains and other non-mortality outcomes, as well as potential interventions and policies to reduce disparities. A broader look into social determinants of health (SDOH), prenatal diagnosis, proximity of birth to a cardiac surgical center, and post-surgical outpatient and neurodevelopmental follow-up may accelerate interventions to mitigate disparities in outcomes.

CONCLUSION

Understanding the mechanisms of how SDOH relate to neonatal surgical outcomes is paramount, as disparities research in neonatal congenital heart surgery continues to shift from identification and description, to intervention and policy.

Cross-Volume Effect Between Pediatric and Adult Congenital Cardiac Operations in the United States

BACKGROUND

While the association between surgical volume and outcomes has been well-established, the potential impact of specialized pediatric centers on outcomes of cardiac surgery for adults with congenital heart disease has not been elucidated.

METHODS

The 2010-2017 Nationwide Readmissions Database was queried to identify all adults with congenital heart disease. High-volume centers were designated as the highest tertile of operative case-volume annually for both pediatric (pHVC) and adult (aHVC) cardiac operations. Multivariable regression models adjusting for demographic and clinical characteristics were utilized to evaluate adjusted odds ratios for select outcomes.

RESULTS

Of an estimated 52,357 hospitalizations meeting inclusion criteria, 6,074 (11.7%) received an operation at a pHVC and 45,652 (87.2%) at an aHVC. Compared to aHVC, patients at pHVC were on average younger, had a similar Elixhauser Comorbidity Index, and underwent higher-risk operations. They more commonly carried private insurance and were categorized within the top income quartile. On multivariable analysis, operations at a pHVC were associated with reduced odds of peri-operative complications (Adjusted Odds Ratio: 0.85, 95% CI: 0.72-0.99), non-home discharge (Adjusted Odds Ratio: 0.64, 95% CI: 0.55-0.73) and 90-day emergent readmissions (Adjusted Odds Ratio: 0.73, 95% CI: 0.60-0.89), but similar mortality (Adjusted Odds Ratio: 0.74, 95% CI: 0.43-1.28).

CONCLUSIONS

Compared to high volume hospitals for adult cardiac surgery, congenital heart disease operations at high volume pediatric cardiac centers were associated with reduced odds of complications, non-home discharges and urgent readmissions. Our findings may better inform appropriate referral of this complex patient cohort and regionalization of their care.

Race and Outcomes in Patients with Congenital Cardiac Disease in an Enhanced Recovery Program

OBJECTIVES

Disparities in perioperative outcomes exist. In addition to patient and socioeconomic factors, racial disparities in outcome measures may be related to issues at the provider and institutional levels. Recognizing a potential role of standardized care in mitigating provider bias, this study aims to compare the perioperative sedation and pain management and consequent outcomes in Enhanced Recovery After Surgery (ERAS) cardiac patients of different races undergoing congenital heart surgery at a single quaternary children's hospital.

DESIGN

A retrospective study.

SETTING

A single quaternary pediatric hospital.

PARTICIPANTS

Patients, infants to adults, undergoing elective congenital cardiac surgery and enrolled in the ERAS protocol from October 2018 to December 2020.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Of the patients, 872 were reviewed and 606 with race information were analyzed. There was no significant difference in intraoperative and postoperative oral morphine equivalent, perioperative sedatives, and regional blockade in Asian or African American patients when compared to White patients. Postoperative pain scores and outcomes among African American and Asian races were also not statistically different when compared to White patients.

CONCLUSIONS

Racial disparity in perioperative management and outcomes in patients with standardized ERAS protocols does not exist at the authors' institution. Future comparative studies of ERAS noncardiac patients may provide additional information on the role of standardization in reducing implicit bias.

Race-based disparities in access to surgical palliation for hypoplastic left heart syndrome

BACKGROUND

Racial disparities in outcomes have been shown to persist in many operative specialties, including the management of congenital heart disease. Using a demographic-adjusted methodology, we examined whether patient race influenced access to high-performing centers for the operative management of hypoplastic left heart syndrome.

METHODS

The 2005-2017 National Inpatient Sample was queried to identify all pediatric (≤5 years) hospitalizations with an operation for hypoplastic left heart syndrome. A racial disparity index was generated for each hospital and defined as the proportion of White patients receiving operative management for hypoplastic left heart syndrome divided by the proportion of White patients admitted for respiratory failure. This methodology quantified hospital-level racial variation while adjusting for the local racial makeup of each center.

RESULTS

Of the 17,275 patients who met inclusion criteria, 64.1% were managed at high-volume centers. Patients at high-volume centers had a similar distribution of operative type, age, and burden of comorbidities. The mean racial disparity index steadily grew from 1.06 at the lowest volume decile of operative volume to 1.51 at the highest, indicating an increasing proportion of White patients as volume increased. Using risk-adjusted analysis, each decile increase in hospital volume was associated with a 14% relative reduction in odds of mortality and a 0.06 increase in predicted racial disparity index. Increasing volume was further associated with reduced odds of non-home discharge but did not alter resource utilization.

CONCLUSION

We demonstrate that high-volume centers disproportionally serve White patients and have superior clinical outcomes compared to low-volume centers. This study highlights the critical importance of equitable access to expert care for high-risk conditions such as hypoplastic left heart syndrome.

Addressing Social Determinants of Health and Mitigating Health Disparities Across the Lifespan in Congenital Heart Disease: A Scientific Statement From the American Heart Association

Despite the overall improvement in life expectancy of patients living with congenital heart disease (congenital HD), disparities in morbidity and mortality remain throughout the lifespan. Longstanding systemic inequities, disparities in the social determinants of health, and the inability to obtain quality lifelong care contribute to poorer outcomes. To work toward health equity in populations with congenital HD, we must recognize the existence and strategize the elimination of inequities in overall congenital HD morbidity and mortality, disparate health care access, and overall quality of health services in the context of varying social determinants of health, systemic inequities, and structural racism. This requires critically examining multilevel contributions that continue to facilitate health inequities in the natural history and consequences of congenital HD. In this scientific statement, we focus on population, systemic, institutional, and individual‐level contributions to health inequities from prenatal to adult congenital HD care. We review opportunities and strategies for improvement in lifelong congenital HD care based on current public health and scientific evidence, surgical data, experiences from other patient populations, and recognition of implicit bias and microaggressions. Furthermore, we review directions and goals for both quantitative and qualitative research approaches to understanding and mitigating health inequities in congenital HD care. Finally, we assess ways to improve the diversity of the congenital HD workforce as well as ethical guidance on addressing social determinants of health in the context of clinical care and research.

Advances in Managing Transition to Adulthood for Adolescents With Congenital Heart Disease: A Practical Approach to Transition Program Design: A Scientific Statement From the American Heart Association

It is now expected that most individuals with congenital heart disease will survive to adulthood, including those with complex heart conditions. Maintaining lifelong medical care requires those with congenital heart disease to eventually transfer from pediatric to adult-oriented health care systems. Developing health care transition skills and gaining independence in managing one's own health care is imperative to this process and to ongoing medical and psychosocial success. This scientific statement reviews the recent evidence regarding transition and provides resources, components, and suggestions for development of congenital heart disease transition programs with the goals of improving patient knowledge, self-management, and self-efficacy skills to the level they are capable to eventually integrate smoothly into adult-oriented health care. Specifically, the scientific statement updates 3 sections relevant to transition programming. First, there is a review of specific factors to consider, including social determinants of health, psychosocial well-being, and neurocognitive status. The second section reviews costs of inadequate transition including the public health burden and the impairment in individual quality of life. Finally, the last section discusses considerations and suggestions for transition program design including communication platforms, a family-centered approach, and individual models. Although this scientific statement reviews recent literature surrounding transitions of care for individuals with congenital heart disease there remain significant knowledge gaps. As a field, we have yet to determine ideal timing and methods of transition, and barriers to transition and transfer remain, particularly for the underserved populations. The consequences of poor health care transition are great and garnering outcomes and information through organized, multifaceted, collaborative approaches to transition is critical to improving the lifelong care of individuals with congenital heart disease.

Social Determinants of Disparities in Mortality Outcomes in Congenital Heart Disease: A Systematic Review and Meta-Analysis

Background

Social determinants of health (SDoH) affect congenital heart disease (CHD) mortality across all forms and age groups. We sought to evaluate risk of mortality from specific SDoH stratified across CHD to guide interventions to alleviate this risk.

Methods

We searched electronic databases between January 1980 and June 2019 and included studies that evaluated occurrence of CHD deaths and SDoH in English articles. Meta-analysis was performed if SDoH data were available in &gt;3 studies. We included race/ethnicity, deprivation, insurance status, maternal age, maternal education, single/multiple pregnancy, hospital volume, and geographic location of patients as SDoH. Data were pooled using random-effects model and outcome was reported as odds ratio (OR) with 95% confidence interval (CI).

Results

Of 17,716 citations reviewed, 65 met inclusion criteria. Sixty-three were observational retrospective studies and two prospective. Of 546,981 patients, 34,080 died. Black patients with non-critical CHD in the first year of life (Odds Ratio 1.62 [95% confidence interval 1.47–1.79], I2 = 7.1%), with critical CHD as neonates (OR 1.27 [CI 1.05-1.55], I2 = 0%) and in the first year (OR 1.68, [1.45-1.95], I2 = 0.3%) had increased mortality. Deprived patients, multiple pregnancies, patients born to mothers &lt;18 years and with education &lt;12 years, and patients on public insurance with critical CHD have greater likelihood of death after the neonatal period.

Conclusion

This systematic review and meta-analysis found that Black patients with CHD are particularly vulnerable for mortality. Numerous SDoH that affect mortality were identified for specific time points in CHD course that may guide interventions, future research and policy.

Systematic Review Registration

[https://www.crd.york.ac.uk/PROSPERO/display_record.php?ID=CRD42019139466&amp;ID=CRD42019139466], identifier [CRD42019139466].

Heart Disease and Stroke Statistics-2022 Update: A Report From the American Heart Association

BACKGROUND

The American Heart Association, in conjunction with the National Institutes of Health, annually reports the most up-to-date statistics related to heart disease, stroke, and cardiovascular risk factors, including core health behaviors (smoking, physical activity, diet, and weight) and health factors (cholesterol, blood pressure, and glucose control) that contribute to cardiovascular health. The Statistical Update presents the latest data on a range of major clinical heart and circulatory disease conditions (including stroke, congenital heart disease, rhythm disorders, subclinical atherosclerosis, coronary heart disease, heart failure, valvular disease, venous disease, and peripheral artery disease) and the associated outcomes (including quality of care, procedures, and economic costs).

METHODS

The American Heart Association, through its Statistics Committee, continuously monitors and evaluates sources of data on heart disease and stroke in the United States to provide the most current information available in the annual Statistical Update. The 2022 Statistical Update is the product of a full year's worth of effort by dedicated volunteer clinicians and scientists, committed government professionals, and American Heart Association staff members. This year's edition includes data on the monitoring and benefits of cardiovascular health in the population and an enhanced focus on social determinants of health, adverse pregnancy outcomes, vascular contributions to brain health, and the global burden of cardiovascular disease and healthy life expectancy.

RESULTS

Each of the chapters in the Statistical Update focuses on a different topic related to heart disease and stroke statistics.

CONCLUSIONS

The Statistical Update represents a critical resource for the lay public, policymakers, media professionals, clinicians, health care administrators, researchers, health advocates, and others seeking the best available data on these factors and conditions.

Impact of Maternal-Fetal Environment on Mortality in Children With Single Ventricle Heart Disease

BACKGROUND

Children with single ventricle heart disease have significant morbidity and mortality. The maternal–fetal environment (MFE) may adversely impact outcomes after neonatal cardiac surgery. We hypothesized that impaired MFE would be associated with an increased risk of death after stage 1 Norwood reconstruction.

METHODS AND RESULTS

We performed a retrospective cohort study of children with hypoplastic left heart syndrome (and anatomic variants) who underwent stage 1 Norwood reconstruction between 2008 and 2018. Impaired MFE was defined as maternal gestational hypertension, preeclampsia, gestational diabetes, and/or smoking during pregnancy. Cox proportional hazards regression models were used to investigate the association between impaired MFE and death while adjusting for confounders. Hospital length of stay was assessed with the competing risk of in‐hospital death. In 273 children, the median age at stage 1 Norwood reconstruction was 4 days (interquartile range [IQR], 3–6 days). A total of 72 children (26%) were exposed to an impaired MFE; they had more preterm births (18% versus 7%) and a greater percentage with low birth weights <2.5 kg (18% versus 4%) than those without impaired MFE. Impaired MFE was associated with a higher risk of death (hazard ratio [HR], 6.05; 95% CI, 3.59–10.21; P<0.001) after adjusting for age at surgery, Hispanic ethnicity, genetic syndrome, cardiac diagnosis, surgeon, and birth era. Children with impaired MFE had almost double the risk of prolonged hospital stay (HR, 1.95; 95% CI, 1.41–2.70; P<0.001).

CONCLUSIONS

Children exposed to an impaired MFE had a higher risk of death following stage 1 Norwood reconstruction. Prenatal exposures are potentially modifiable factors that can be targeted to improve outcomes after pediatric cardiac surgery.

The impact of socioeconomic status and race on the outcomes of congenital heart disease

PURPOSE OF REVIEW

Studying the outcomes of congenital heart disease and their associations allows paediatric cardiologists and intensivists to improve the care and health equity of their patients. This review presents the most recent literature discussing the socioeconomic and racial disparities that pervade the outcomes of patients with congenital heart disease in every facet of treatment. The outcomes of congenital heart disease discussed are prenatal detection, maintenance of care, quality of life, neurodevelopment and mortality.

RECENT FINDINGS

Historically, it has been documented that patients with congenital heart disease who are of racial and ethnic minorities disproportionately experience poor outcomes. Recently, the association between racial minorities and mortality has been traced to underlying socioeconomic disparities emphasizing that race and ethnicity are not independent determinants of health.

SUMMARY

The effect of socioeconomic status on the outcomes of congenital heart disease is profound and reaches beyond the association with racial and ethnic minorities. Changes to address these disparities in outcomes must be made at the individual, institutional, community and system levels.

Regionalization of congenital cardiac surgical care: what it will take

PURPOSE OF REVIEW

Decentralized, inconsistent healthcare delivery results in variable outcomes and wastes nearly one trillion dollars annually in the United States (US). Congenital heart surgery (CHS) is not immune due to high, variable costs and inconsistent outcomes across hospitals. Many European countries and Canada have addressed these issues by regionalizing CHS. Centralizing resources lowers costs, reduces in-hospital mortality and improves long-term survival. Although the impact on travel distance for patients is limited, the effect on healthcare disparities requires study. This review summarizes current data and integrates these into paths to regionalization through health policy, research, and academic collaboration.

RECENT FINDINGS

There are too many CHS programs in the US with unnecessarily high densities of centers in certain regions. This distribution lowers center and surgeon case volumes, creates redundancy, and increases variation in costs and outcomes. Simultaneously, adhering to suboptimal allocation impedes the understanding of optimal regionalization models to optimize congenital cardiac care delivery.

SUMMARY

CHS regionalization models developed for the US increase surgeon and center volume, decrease healthcare spending, and improve patient outcomes without substantially increasing travel distance. Regionalization in countries with few or no existing CHS programs is yet to be explored, but may be associated with more efficient spending and procedural complexity expansion.

Center Volume Impacts Readmissions and Mortality after Congenital Cardiac Surgery

OBJECTIVE

To characterize the relationship between surgical volume and postoperative outcomes in congenital heart surgery, we used a national cohort to assess the costs, readmissions, and complications in children undergoing cardiac operations.

STUDY DESIGN

The Nationwide Readmissions Database was used to identify pediatric patients (≤18 years) undergoing congenital cardiac surgery from 2010 to 2017. Hospitals were categorized based on deciles and tertiles of annual caseload with high-volume categorized as the highest tertile of volume. Multivariable regression models adjusting for patient and hospital characteristics were used to study the impact of volume on 30-day nonelective readmission, mortality, home discharge, and resource use.

RESULTS

Of an estimated 69 448 hospitalizations included for analysis, 56 672 (82%) occurred at high-volume centers. After adjustment for key clinical factors, each decile increase in volume was associated with a 25% relative decrease in the odds of mortality, a 14% decrease in the odds of nonhome discharge, and a 4% relative decrease in the likelihood of 30-day nonelective readmission. After risk adjustment, each incremental increase in volume decile was associated with a one-half-day decrease in the hospital length of stay, but did not alter costs of the index hospitalization. However, after including all readmissions within 30 days of the index discharge, high-volume centers were associated with significantly lower costs compared with low-volume hospitals.

CONCLUSIONS

Increased congenital cardiac surgery volume is associated with improved mortality, reduced duration of hospitalization, 30-day readmissions, and resource use. These findings demonstrate the inverse relationship between hospital volume and resource use and may have implications for the centralization of care for congenital cardiac surgery.

Double Jeopardy: Prematurity and Congenital Heart Disease-What's Known and Why It's Important

This article is based on a composite of talks presented during the Double Jeopardy: Prematurity and Congenital Heart Disease Plenary Session at NeoHeart 2020, a global virtual conference.Prematurity and low weight remain significant risk factors for mortality after neonatal cardiac surgery despite a steady increase in survival. Newer and lower weight thresholds for operability are constantly generated as surgeons gather proficiency, technical mastery, and experience in performing complex procedures on extremely small infants. The relationship between birth weight and survival after cardiac surgery is nonlinear with 2 kilograms (kg) being an inflection point below which marked decline in survival occurs.The prevalence of congenital heart disease (CHD) in premature infants is more than twice that in term born infants. Increased risk of preterm birth in infants with CHD is most commonly due to spontaneous preterm birth and remains poorly understood.Advances in Neonatal-Perinatal medicine have led to a marked improvement in survival of neonates born prematurely over the last several decades. However, the risk of severe morbidities including retinopathy of prematurity, intraventricular hemorrhage, bronchopulmonary dysplasia and necrotizing enterocolitis remains significant in extremely low birth weight infants. Premature infants with CHD are at a greater risk of prematurity related morbidities than premature infants without CHD. Interventions that have been successful in decreasing the risk of these morbidities are addressed.

Health Care Policy and Congenital Heart Disease: 2020 Focus on Our 2030 Future

The congenital heart care community faces a myriad of public health issues that act as barriers toward optimum patient outcomes. In this article, we attempt to define advocacy and policy initiatives meant to spotlight and potentially address these challenges. Issues are organized into the following 3 key facets of our community: patient population, health care delivery, and workforce. We discuss the social determinants of health and health care disparities that affect patients in the community that require the attention of policy makers. Furthermore, we highlight the many needs of the growing adults with congenital heart disease and those with comorbidities, highlighting concerns regarding the inequities in access to cardiac care and the need for multidisciplinary care. We also recognize the problems of transparency in outcomes reporting and the promising application of telehealth. Finally, we highlight the training of providers, measures of productivity, diversity in the workforce, and the importance of patient-family centered organizations in advocating for patients. Although all of these issues remain relevant to many subspecialties in medicine, this article attempts to illustrate the unique needs of this population and highlight ways in which to work together to address important opportunities for change in the cardiac care community and beyond. This article provides a framework for policy and advocacy efforts for the next decade.

Racism and pediatric health outcomes

Racism- a system operating at the intrapersonal, interpersonal, institutional, and structural levels- is a serious threat to the health and wellbeing of children and adolescents. This narrative review highlights racism as a social determinant of health, and describes how racism breeds disparate pediatric health outcomes in infant health, asthma, Type 1 diabetes, mental health, and pediatric surgical conditions. Key examples include the association of residential racial segregation and the alarming infant mortality rate among Black infants as well as the role of redlining and discriminatory housing practices on asthma morbidity among Black children and adolescents. Furthermore, inequitable care practices such as (1) racial and ethnic disparities in insulin pump usage in patients with Type 1 diabetes, (2) lower rates pharmacotherapy initiation in racialized children with mental health disorders, and (3) decreased pain medication management and confirmatory imaging in Black children with acute appendicitis, highlight the role of interpersonal racism in propagating poor health outcomes. An urgent call to action is needed to address pediatric health inequities and ensure all children can live healthy lives. Key strategies must tackle racism at the individual, institutional, and structural levels and include building a diverse workforce, prioritizing research to describe the impact of racism on pediatric health outcomes, initiating improvement efforts to close equity gaps, building community partnerships, co-designing solutions alongside patients and families, and advocating for policy change to address the social conditions that impact children and adolescents of color.

Racial and ethnic disparities in coronary, vascular, structural, and congenital heart disease

Cardiovascular disease (CVD) remains the leading cause of death in the United States. However, percutaneous interventional cardiovascular therapies are often underutilized in Blacks, Hispanics, and women and may contribute to excess morbidity and mortality in these vulnerable populations. The Society for Cardiovascular Angiography and Interventions (SCAI) is committed to reducing racial, ethnic, and sex-based treatment disparities in interventional cardiology patients. Accordingly, each of the SCAI Clinical Interest Councils (coronary, peripheral, structural, and congenital heart disease [CHD]) participated in the development of this whitepaper addressing disparities in diagnosis, treatment, and outcomes in underserved populations. The councils were charged with summarizing the available data on prevalence, treatment, and outcomes and elucidating potential reasons for any disparities. Given the huge changes in racial and ethnic composition by age in the United States (Figure 1), it was difficult to determine disparities in rates of diagnosis and we expected to find some racial differences in prevalence of disease. For example, since the average age of patients undergoing transcatheter aortic valve replacement (TAVR) is 80 years, one may expect 80% of TAVR patients to be non-Hispanic White. Conversely, only 50% of congenital heart interventions would be expected to be performed in non-Hispanic Whites. Finally, we identified opportunities for SCAI to advance clinical care and equity for our patients, regardless of sex, ethnicity, or race.