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Effect of inhaled procaterol hydrochloride in children with bronchial asthma, with particular reference to duration
Insights
Procaterol inhalation improved lung function in children with asthma. This bronchodilator demonstrated a prolonged clinical effect, particularly on forced expiratory volume in 1 second (FEV1).
Area of Science:
- Pediatric Pulmonology
- Clinical Pharmacology
Background:
- Asthma management in children requires effective bronchodilators.
- Understanding the duration of action for inhaled medications is crucial for treatment efficacy.
Purpose of the Study:
- To evaluate the prolonged clinical effect of inhaled procaterol in pediatric asthma patients.
- To compare the efficacy of procaterol against a placebo in mild, stable respiratory disturbance.
Main Methods:
- A double-blind, crossover trial involving nine asthmatic children.
- Procaterol (10 micrograms) and placebo administered via metered-dose inhaler.
- Pulmonary function tests (FVC, FEV1, V50, V25) monitored for 10 hours post-administration.
Main Results:
- No significant difference in Forced Vital Capacity (FVC) between procaterol and placebo.
- Significantly greater changes observed in FEV1, V50, and V25 following procaterol.
- Duration of action for FEV1, V50, and V25 was 6, 10, and 4 hours, respectively.
Conclusions:
- Inhaled procaterol demonstrates a clinically significant and prolonged effect on key lung function parameters in children with mild asthma.
- Procaterol offers a valuable therapeutic option for improving airflow obstruction in pediatric asthma.
Abstract:
This double-blind crossover trial evaluated the prolonged clinical effect of procaterol inhaled in a dose of 10 micrograms by nine asthmatic children with mild and stable respiratory disturbance. To compare procaterol with the placebo administered with a pressurized metered-dose inhaler 48 hr before or after procaterol, FVC, FEV1, V50, and V25 were followed up for 10 hr. FVC did not indicate a significant difference between the two treatments, while FEV1, V50, and V25 showed significantly greater changes after procaterol administration. The duration of action of procaterol in terms of FEV1, V50, and V25 was 6, 10, and 4 hr, respectively.