Delayed transplantation may affect intellectual ability in children
Jiwon M Lee1,2, Yeon Kyung Jung3, Jeong-Hoon Bae3
1Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea.
Insights
Longer illness duration before organ transplantation (Tx) negatively impacts cognitive function in children. Early Tx may improve cognitive outcomes in pediatric patients.
Area of Science:
- Pediatric medicine
- Neuroscience
- Transplantation surgery
Background:
- Neurocognitive decline is a concern in children with chronic illnesses.
- Major surgery or trauma may adversely affect cognitive performance in pediatric patients.
Purpose of the Study:
- To evaluate cognitive function in Korean children post-organ transplantation (Tx).
- To identify clinical factors associated with cognitive outcomes in pediatric transplant recipients.
Main Methods:
- Cognitive function assessed using IQ, SQ, and Continuous Performance Test (CPT) in 43 pediatric kidney (KT) or liver transplant (LT) recipients.
- Intellectual delay classified as intellectual disability (ID) or low intelligence (LI); ADHD diagnosed by psychiatrists.
Main Results:
- Prevalence of ID was 11.6%, LI was 32.5%, and ADHD was 32.5%.
- Longer pre-Tx duration of illness significantly correlated with low intelligence (LI) (OR=1.263, P=0.023).
- Pre-Tx duration was more impactful than age at Tx or total disease duration.
Conclusions:
- Extended pre-transplant illness duration may impair intellectual ability in pediatric patients.
- Early organ transplantation could be beneficial for enhancing cognitive function in children.
- Findings highlight the importance of timely intervention in pediatric chronic illness management.
Background:
Decline in neurocognitive function is a reported complication in children with chronic illness. Concerns have been increasing that exposure to a major surgery or trauma may negatively affect cognitive performance in children. This study evaluated cognitive function in 43 Korean children who received organ transplantation (Tx), and sought to identify associated clinical factors.
Methods:
Pediatric recipients of kidney (KT) or liver Tx (LT) from 1999 to 2011 were recruited for cognitive tests. Cognitive function was evaluated using intelligence quotient (IQ), social quotient (SQ), and Continuous Performance Test using Advanced Test for Attention scores, which reflect attention ability. Intellectual delay was graded as intellectual disability (ID; IQ <70) or low intelligence (LI; IQ<85). Diagnosis for attention-deficit-hyperactivity disorder (ADHD) was made by pediatric psychiatrists.
Results:
The subjects consisted of 43 pediatric recipients of 28 LT and 15 KT. There were 20 boys (46.5%). Median age was 3.1 years (range, 0.5-15.3 years) at Tx. Median age at cognitive evaluation was 12.9 years (range, 3.4-18.4 years). Median pre-Tx duration of illness was 1.6 years (range, 0-13.5 years). The prevalence of ID, LI, and ADHD was 11.6%, 32.5%, and 32.5%, respectively. On multivariate analysis, longer pre-Tx duration of illness was a significant factor for LI (OR, 1.263; 95%CI: 1.033-1.544, P = 0.023).
Conclusion:
Longer pre-Tx duration may negatively affect intellectual ability in Korean children. Pre-Tx duration was more significant than the age at Tx or total disease duration per se. Early Tx may be beneficial for cognitive function in children.
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