Lung function response to bronchodilator nebulization via hood in wheezy infants: a pilot study

Area of Science:

• Pediatric Pulmonology
• Respiratory Medicine
• Pharmacology

Background:

• Infants commonly receive aerosol therapy via nebulizers with face masks.
• Mask application can disturb infants, leading to poor seal and reduced medication delivery.
• Alternative delivery methods are needed to improve aerosol therapy efficacy in infants.

Purpose of the Study:

• To compare infant lung function response to bronchodilator nebulization using a hood versus a face mask.
• To evaluate the effectiveness of different aerosol delivery devices in wheezy infants.

Main Methods:

• 26 recurrently wheezy infants received salbutamol (0.30 mg/kg) via mask and hood in alternating order.
• Lung function was assessed by measuring maximal expiratory flows at functional residual capacity (V'maxFRC) and area under the V'maxFRC curve (AUC).
• Measurements were taken at 5-minute intervals after each of two doses, 30 minutes apart.

Main Results:

• Salbutamol significantly improved V'maxFRC by 31.7% and AUC by 425% x min after the second dose.
• Both mask and hood delivery showed similar effectiveness.
• A slightly better response was observed when the hood was used after the mask (M+H).

Conclusions:

• Nebulized salbutamol effectively improved lung function in wheezy infants.
• The hood delivery method is as effective as the traditional face mask.
• The hood offers a simple, patient-friendly alternative, especially for uncooperative infants, potentially improving aerosol therapy delivery.