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Optimal inhalation technique with terbutaline Turbuhaler
1Dept of Paediatrics, Kolding Hospital, Denmark.
Insights
Asthmatic children achieved effective bronchodilation with the Turbuhaler using a simple inhalation technique. Fast inhalation is key, while head tilting and breath-holding pauses showed no significant impact on terbutaline delivery.
Area of Science:
- Pediatric Pulmonology
- Respiratory Medicine
- Pharmacology
Background:
- Asthma management in children requires effective bronchodilator delivery.
- The Turbuhaler is a common inhalation device, but optimal usage techniques require investigation.
- Understanding factors influencing bronchodilator response is crucial for improving patient outcomes.
Purpose of the Study:
- To assess the bronchodilator response to terbutaline via Turbuhaler under different inhalation techniques in children with asthma.
- To determine if head tilting or breath-holding affects bronchodilator efficacy.
- To evaluate the impact of inhalation from residual volume versus functional residual capacity on terbutaline delivery.
Main Methods:
- A double-blind, cross-over study involving 14 asthmatic children (aged 8-14 years).
- Four different inhalation modes of 0.25 mg terbutaline from a Turbuhaler were tested.
- Peak inspiratory flow rate was measured, with a focus on fast inhalations.
Main Results:
- Fast inhalations (mean peak inspiratory flow rate = 53 L/min) were employed, as previously found to be more efficient.
- Tilting the head back and a 10-second breath-hold pause did not significantly alter bronchodilation.
- Inhalation from residual volume (RV) or functional residual capacity (FRC) yielded similar bronchodilator responses.
Conclusions:
- The Turbuhaler can be used effectively with a simple inhalation technique in pediatric asthma patients.
- Complex maneuvers like head tilting or breath-holding are unnecessary for optimal terbutaline delivery.
- Simplified inhalation techniques may improve teaching and adherence in young asthmatics.
Abstract:
The bronchodilator response after four different modes of inhalation of 0.25 mg terbutaline from a Turbuhaler was assessed, in a double-blind cross-over study, of 14 asthmatic children aged 8-14 yrs (mean 11.6 yrs). The children inhaled as fast as possible (mean peak inspiratory flow rate = 53 l.min-1), because fast inhalations have been found to be more efficient than slow inhalations when the Turbuhaler is used. Tilting the head back during inhalation and a breath-holding pause of 10 s after the inhalation had no significant effect upon bronchodilation. Furthermore, the response was the same whether the children inhaled from residual volume (RV) or functional residual capacity (FRC). These results suggest that this new inhaler can be used with a very simple inhalation technique without any loss of effect. A simple inhalation technique is likely to facilitate teaching and improve compliance.