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Residual neurologic sequelae after childhood cerebral malaria
M B van Hensbroek1, A Palmer, S Jaffar
1Medical Research Council Laboratories, Royal Victoria Hospital, Banjul, United Kingdom.
Insights
Neurologic sequelae after cerebral malaria in children significantly improve over six months, with most residual cases linked to coma depth and convulsions. This suggests distinct pathways for fatality and long-term disability.
Area of Science:
- Pediatric Neurology
- Infectious Diseases
- Tropical Medicine
Background:
- Cerebral malaria is a leading cause of pediatric hospitalization in tropical regions.
- Neurologic sequelae are common but risk factors and long-term outcomes remain poorly understood.
Purpose of the Study:
- Identify common neurologic sequelae post-cerebral malaria.
- Track the temporal evolution of these sequelae.
- Determine key clinical risk factors for residual disability.
Main Methods:
- Prospective study involving 624 children with cerebral malaria.
- Conducted in two hospitals in The Gambia, West Africa.
Main Results:
- 23.3% of survivors had sequelae at discharge, decreasing to 4.4% at 6 months.
- Paresis and ataxia were the most frequent sequelae.
- Independent risk factors for sequelae included coma depth, multiple convulsions, and duration of unconsciousness.
Conclusions:
- Neurologic sequelae in cerebral malaria survivors show significant improvement over time.
- Coma depth, convulsions, and unconsciousness duration are key predictors of residual disability.
- Fatal outcomes and neurologic sequelae may stem from separate pathological processes.
Background:
Cerebral malaria is an important cause of pediatric hospital admissions in the tropics. It commonly leads to neurologic sequelae, but the risk factors for this remain unclear and the long-term outcome unknown.
Objective:
The purpose of this study was to identify the common forms of neurologic sequelae that occur after cerebral malaria, their evolution over time, and the major clinical risk factors for residual disability.
Study Design:
Prospective study in 624 children admitted with cerebral malaria to two hospitals in The Gambia, West Africa.
Results:
We found that 23.3% of survivors had neurologic sequelae on discharge from the hospital. By 1 month the proportion had decreased to 8.6%, and at 6 months only 4.4% of survivors were found to have residual neurologic sequelae. The most common forms of neurologic sequelae were paresis and ataxia, often found in combination with other neurologic abnormalities. In a multiple logistic regression analysis, depth of coma on admission, multiple convulsions, and duration of unconsciousness were the only three independent risk factors. Hypoglycemia and lactate acidosis were not predictive of sequelae, although they are important risk factors for fatality.
Conclusion:
This finding raises the possibility that fatal outcome and neurologic sequelae arise from separate pathologic processes.