Study Summary: This study compares two methods to help young children (ages 6 to 24 months) breathe better when they have wheezing. Wheezing is a whistling sound when breathing caused by blocked airways. The two methods are using a nebulizer or a metered-dose inhaler (MDI) with a spacer. A nebulizer is a machine that turns liquid medicine into a mist to inhale. An MDI is a small, handheld device that sprays medicine, and a spacer is a tube that helps deliver the medicine better. The study will check if both methods work equally well.

Key Points:

• Two groups: one uses a nebulizer, the other uses an MDI with spacer.
• Treatment involves 3 puffs of medicine every 20 minutes.
• The study is for young children in emergency settings with wheezing.

Note: Children with certain health conditions, like chronic lung or heart disease, are not eligible. This study involves close observation by doctors, and the main goal is to see if the child needs to stay in the hospital after treatment.