Executive function deficits in congenital heart disease: why is intervention important?

Calderon, Johanna; Bellinger, David C. · 2015 · OpenAlex-citations

DOI: 10.1017/s1047951115001134

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Summary

This review article addresses the significant neurodevelopmental impairments associated with congenital heart disease (CHD), specifically focusing on executive function (EF) deficits. While it is widely recognized that children with CHD are at high risk for conditions such as attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder, EF impairments represent a prominent and debilitating feature of their neurocognitive phenotype. These deficits hinder the ability to coordinate actions toward goals, impacting academic achievement, social adaptation, and quality of life. The authors highlight a critical gap in current research: despite the prevalence of these issues, there is a lack of evidence regarding the efficacy of preventive or treatment strategies specifically designed for this population. The paper aims to summarize existing data on EF impairments in youth with CHD, explore their comorbidities, and propose avenues for intervention. The authors synthesize findings from various studies, including the Boston Circulatory Arrest Study and research on children with transposition of the great arteries (d-TGA), tetralogy of Fallot, and hypoplastic left heart syndrome. The review examines neuropsychological testing results across different age groups, from preschoolers to adolescents. Specific assessments cited include the Trail Making Test, Wisconsin Card Sorting Test, Rey–Osterrieth Complex Figure, Animal Stroop naming task, and the Delis–Kaplan Executive Function System. The analysis compares performance in children with CHD against normative values and control groups, noting that while lower-level skills like IQ and basic language often remain intact, higher-order skills such as working memory, cognitive flexibility, inhibitory control, and planning are significantly impaired. The review also considers risk factors, such as the severity of cyanosis and timing of diagnosis, and evaluates the natural history of these deficits, noting that some impairments may improve with age while others worsen. Key findings indicate that EF deficits in children with CHD are pervasive and persistent. Children with d-TGA, for instance, show substantial difficulties in alternating between tasks, committing more perseverative errors, and struggling with sustained attention. These deficits extend into adolescence, where patients continue to score lower than expected on tests of cognitive flexibility and inhibitory control. The review establishes a strong link between EF dysfunction and comorbid issues, including social cognition deficits (such as impaired Theory of Mind), internalizing problems like anxiety and depression, and externalizing behaviors like ADHD symptoms. Furthermore, EF impairments are associated with reduced ability to manage chronic medical conditions, leading to poor adherence to follow-up care and increased risk-taking behaviors. The authors note that the specific pattern of EF dysfunction varies by the type of CHD, with d-TGA patients often showing better visuo-spatial outcomes compared to those with tetralogy of Fallot or single ventricle anatomy. The significance of this review lies in its call for targeted interventions. The authors argue that because EFs are amenable to improvement, as demonstrated in other pediatric populations, evidence-based interventions could benefit children with CHD. They discuss potential strategies, including computerized working memory training (e.g., Cogmed), behavioral interventions, and mindfulness training, which have shown promise in improving self-regulation and cognitive skills in other groups. The paper concludes that while psychological family-centered interventions have helped reduce parental stress, they have not directly improved children’s neurocognitive outcomes. Therefore, there is an urgent need for randomized controlled trials to evaluate the efficacy of direct neurocognitive interventions in children with CHD to mitigate these lifelong deficits and improve overall well-being.

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• cognitive impairment