Related Experiment Video
Updated: Aug 8, 2026
Implantation of Total Artificial Heart in Congenital Heart Disease
Published on: July 18, 2014
Controlled study of preschool development after surgery for congenital heart disease
Insights
Intellectual development in preschool children with congenital heart disease differs from older children. Chronic illness impacts development before surgery, with cyanotic heart conditions showing lasting deficits post-surgery.
Area of Science:
- Pediatric Neurology
- Developmental Psychology
- Pediatric Cardiology
Background:
- Intellectual impairment research in congenital heart disease (CHD) primarily targets older children.
- Preschool children with CHD represent an understudied demographic regarding cognitive development.
- Understanding developmental trajectories in early childhood CHD is crucial for timely interventions.
Purpose of the Study:
- To investigate cognitive development in preschool children with congenital heart disease.
- To determine if findings from older children with CHD apply to the preschool age group.
- To assess the impact of chronic illness and surgical intervention on early cognitive function.
Main Methods:
- A longitudinal study assessed three groups of children under 3.5 years: CHD awaiting surgery, bone marrow transplant (BMT) awaiting transplant, and healthy controls.
- Cognitive assessments were conducted preoperatively and 12 months postoperatively.
- Comparison of developmental trajectories across groups and by lesion type (cyanotic vs. acyanotic).
Main Results:
- Preoperatively, both CHD and BMT groups exhibited developmental deficits compared to healthy controls, despite group means being within the normal range.
- Postoperative assessments revealed significant developmental deficits persisting only in children with cyanotic heart lesions.
- Children with acyanotic lesions showed improved outcomes post-surgery, nearing those of healthy controls.
Conclusions:
- Cognitive development in preschool children with CHD is not comparable to older children.
- Preoperative chronic illness, rather than the specific condition, is a primary influence on early development.
- Postoperative outcomes differ significantly between cyanotic and acyanotic congenital heart disease, highlighting the need for tailored follow-up.
Aim:
Research into intellectual impairment among children with congenital heart disease has focused mainly on older children. This study was designed to determine whether previous findings are applicable to preschool children.
Methods:
Three groups of children under 31/2 years old were assessed immediately before treatment and 12 months later: a group with congenital heart disease awaiting surgery, another awaiting bone marrow transplantation, and a healthy comparison group.
Results:
Although the means of the three groups were within the normal range, preoperatively the cardiac and transplant groups showed deficits compared with the healthy controls. Postoperatively, continuing developmental deficits were significant only in the children with cyanotic lesions.
Conclusions:
Conclusions about intellectual development in older children with congenital heart disease do not apply to preschool children. Before corrective surgery, chronic illness itself appears to be the predominant influence on development. Postoperatively, cyanotic and acyanotic lesions are associated with different short term outcomes.
