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Use of trihexyphenidyl in children with cerebral palsy
Jorge Carranza-del Rio1, Nancy J Clegg, Alison Moore
1Department of Neurology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
Insights
Trihexyphenidyl effectively treats dystonia and sialorrhea in children with cerebral palsy. Most patients tolerated the medication well, experiencing significant symptom improvements with gradual dose increases.
Area of Science:
- Pediatric Neurology
- Movement Disorders
- Pharmacology
Background:
- Cerebral palsy (CP) often involves dystonia and sialorrhea, impacting quality of life.
- Limited evidence exists on effective pharmacological treatments for these symptoms in pediatric CP populations.
Purpose of the Study:
- To review the benefits and tolerability of trihexyphenidyl for treating dystonia and/or sialorrhea in children with cerebral palsy.
- To assess treatment outcomes and side effects in a pediatric tertiary care setting.
Main Methods:
- Retrospective chart review of 101 children with cerebral palsy treated with trihexyphenidyl.
- Analysis of patient demographics, dosage, treatment duration, reported benefits, and adverse events.
Main Results:
- 91% of patients tolerated trihexyphenidyl well, with a mean treatment duration of over 3 years.
- Significant improvements were reported in upper/lower extremity dystonia (59.4%/37.6%), sialorrhea (60.4%), and speech (24.7%).
- Side effects occurred in 69% of subjects, primarily in older children and early in treatment.
Conclusions:
- Trihexyphenidyl is a well-tolerated and effective medication for managing dystonia and sialorrhea in children with cerebral palsy.
- Gradual dose escalation appears to improve tolerability and treatment adherence.
Abstract:
A paucity of information exists regarding medications to treat dystonia in children with cerebral palsy. This study sought to review the benefits and tolerability of trihexyphenidyl in children with cerebral palsy, treated for dystonia or sialorrhea or both in a pediatric tertiary care hospital, through a retrospective chart review. In total, 101 patients (61 boys and 40 girls) were evaluated. The mean age at drug initiation was 7 years and 10 months (range, 1-18 years). The mean initial dose was 0.095 mg/kg/day. The dose was increased by 10-20% no sooner than every 2 weeks. The mean maximum dose reached was 0.55 mg/kg/day. Ninety-three patients (91%) tolerated the medication well, with a mean duration of treatment of 3 years and 7 months. Side effects occurred in 69% of subjects, the majority in patients aged ≥7 years, and soon after treatment initiation. Sixty-four percent continued the treatment at study end. Ninety-seven patients reported benefits, including reduction of dystonia in upper (59.4%) and lower (37.6%) extremities, sialorrhea (60.4%), and speech issues (24.7%). The majority of patients tolerated trihexyphenidyl well on a schedule of gradual dose increases, and almost all demonstrated improvements in dystonia or sialorrhea or both.
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