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Metered-dose inhaler ipratropium bromide for children with acute asthma exacerbation: A prospective, non-randomized,
Osamu Nomura1,2, Takateru Ihara1, Yoshihiko Morikawa3
1Division of Pediatric Emergency Medicine, Tokyo Metropolitan Children's Medical , Tokyo, Japan.
Insights
Metered-dose inhaler ipratropium bromide (IB) did not reduce hospital admissions for severe pediatric asthma exacerbations. This delivery method may be less effective than nebulizers for ipratropium bromide inhalation.
Area of Science:
- Pediatric Emergency Medicine
- Respiratory Medicine
- Pharmacology
Background:
- Ipratropium bromide (IB) with beta-agonists reduces pediatric asthma hospitalizations.
- Metered-dose inhalers (MDIs) may shorten emergency department (ED) stays compared to nebulizers.
- Effectiveness and safety of MDI-delivered IB with spacers in children are not well-established.
Purpose of the Study:
- To evaluate the effectiveness and safety of metered-dose inhaler (MDI) administered ipratropium bromide (IB) in pediatric patients with acute asthma exacerbation.
Main Methods:
- Prospective, non-randomized, observational study of pediatric patients (≥4 years) with severe asthma exacerbation.
- Patients received IB via MDI with a spacer three times at 20-minute intervals.
- Propensity score matching was used to control for confounding factors.
Main Results:
- No significant difference in admission rates between the IB group (25.9%) and the non-IB group (31.5%).
- Similar post-treatment modified pulmonary index scores in both groups.
- One patient (1.0%) in the IB group experienced mild vomiting.
Conclusions:
- MDI-delivered ipratropium bromide was ineffective in reducing pediatric asthma admission rates.
- Potential for reduced efficacy compared to nebulized ipratropium bromide.
- Further research needed to compare MDI and nebulizer delivery for IB in pediatric asthma.
Background:
Ipratropium bromide (IB), when administered with β2-agonists, is effective in reducing hospital admissions of children presenting to the emergency department (ED) with severe asthma. While IB is commonly delivered in its nebulized form, using a metered-dose inhaler (MDI), can, reportedly, shorten patients' length of stay in the ED. However, the effectiveness and safety of IB administration using an MDI with a spacer have not been established. This study aimed to investigate the effectiveness and safety of MDI-delivered IB in pediatric patients with acute asthma exacerbation.
Methods:
This prospective, non-randomized, observational study included patients aged ≥4 years with a history of severe asthma exacerbation. Patients received IB via MDI with a spacer three times at 20-min intervals. IB use was determined by the physicians' treatment policy. Propensity score matching was used to adjust the confounding factors related to IB administration.
Results:
Of the 158 patients, 88 were treated with IB and 70 were treated without IB. A propensity score-matching analysis extracted 54 patients from each group. We found no statistical difference in the admission rate of the two groups (IB group: 25.9% vs non-IB group: 31.5%; P = 0.67). The post-treatment modified pulmonary index scores (mean ± SD) were also similar (IB: 6.6 ± 2.0 vs non-IB: 6.3 ± 2.5; P = 0.53). Only one patient (1.0%) treated with IB experienced vomiting, which resolved spontaneously.
Conclusion:
The metered-dose inhaler IB was ineffective in reducing the admission rate possibly because it was less effective than a nebulizer for IB inhalation.
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