Cited by 47Congenital Heart Disease StudiesCongenital heart defects researchCardiovascular Conditions and Treatments

A population-based analysis of mortality in patients with Turner syndrome and hypoplastic left heart syndrome using the Texas Birth Defects Registry: Lara et al.

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Lara, Diego A., Ethen, Mary K., Canfield, Mark A., Nembhard, Wendy N., Morris, Shaine A.·2017·Congenital Heart Disease

Abstract

BACKGROUND: Hypoplastic left heart syndrome (HLHS) is strongly associated with Turner syndrome (TS); outcome data when these conditions coexist is sparse. We aimed to investigate long-term survival and causes of death in this population. METHODS: The Texas Birth Defects Registry was queried for all live born infants with HLHS during 1999-2007. We used Kaplan-Meier and Cox regression analyses to compare survival among patients with HLHS with TS (HLHS/TS+) to patients who had HLHS without genetic disorders or extracardiac birth defects (HLHS/TS-). RESULTS: Of the 542 patients with HLHS, 11 had TS (2.0%), 71 had other extracardiac birth defects or genetic disorders, and 463 had neither. The median follow-up time was 4.2 y (interquartile range [IQR] 2.1-6.5). Comparing those with HLHS/TS+ to HLHS/TS-, 100% versus 35% were female (P < .001), and median birth weight was 2140 g (IQR 1809-2650) versus 3196 g (IQR 2807-3540, P < .001). Neonatal mortality was 36% in HLHS/TS+ versus 27% in HLHS/TS- (log rank = 0.431). Ten of the 11 TS+ patients died during the study period for cumulative mortality of 91% versus 50% (hazard ratio (HR) for TS+: 2.90, 95% CI 1.53-5.48). Six patients died prior to surgery, 5 underwent Stage 1 palliation (S1P), 3 died after S1P, 2 survived past S2P, and one of these died at age 19 mo. The underlying cause of death was listed as congenital heart disease on all the death certificates of HLHS/TS+ patients. In multivariable analysis controlling for low birth weight (<2500 g), TS remained associated with significantly increased cumulative mortality, although females without TS had higher mortality than males (HR for TS+ versus males: 2.42, 95% CI 1.24-4.73; HR for TS- females versus males: 1.41, 95% CI 1.08-1.83). CONCLUSION: TS with HLHS is associated with significant mortality. The increased mortality in females without documented TS calls to question if TS is undetected in a portion of females with HLHS.

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  • Several studies have reported 2-3-fold higher mortality in neonates with TS with hypoplastic left heart (HLH) compared to all cases of HLH, suggesting an independent risk of TS to mortality.

    “Similarly, several studies have reported 2-3-fold higher mortality in neonates with TS with hypoplastic left heart (HLH) compared to all cases of HLH, suggesting an independent risk of TS to mortality.633-635”

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Authors
Lara, D. A., Ethen, M. K., Canfield, M. A., Nembhard, W. N., & Morris, S. A.
Affiliations
  • Baylor College of Medicine (US)
  • Texas Department of State Health Services (US)
  • Arkansas Children's Research Institute (US)
Corresponding author
Lara, Diego A.
Venue
Congenital Heart Disease
Published
2016-09-29
Volume
12
Issue
1
Pages
105-112
ISSN
1747-079X (ISSN-L)
OpenAlex
W2525919158
Cited by
47
References
50
Citations by year
2026: 3 · 2025: 6 · 2024: 7 · 2023: 3 · 2022: 8 · 2021: 3 · 2020: 4 · 2019: 5 · 2018: 4 · 2017: 4
FWCI
4.06
Type
journal article
Language
en
Open access
Locations
  • Congenital Heart Disease (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Centers for Disease Control and Prevention (U50DD613232)
  • National Heart, Lung, and Blood Institute (L40 HL124303, K23HL127266)
Topics
  • Health Sciences › Medicine › Epidemiology › Congenital Heart Disease Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiovascular Conditions and Treatments
Keywords
Turner syndrome, hypoplastic left heart syndrome, mortality, long-term survival, low birth weight, sex differences, neonatal mortality, stage 1 palliation, stage 2 palliation
MeSH terms
Adolescent, Cause of Death, Child, Child, Preschool, Female, Cardiac Surgical Procedures, Humans, Infant, Infant, Newborn, Male, Registries, Retrospective Studies, Risk Factors, Sex Factors, Texas, Time Factors, Turner Syndrome, Proportional Hazards Models, Treatment Outcome, Hypoplastic Left Heart Syndrome, Kaplan-Meier Estimate

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