The metered-dose inhaler (MDI) is a canister of medication that releases a medicated mist. You inhale the mist into the airways of the lungs. The MDI can be used alone, but usually it works better if it is used with a spacer device.
• Several different types of medicines are available as MDIs, including:
• Medications that dilate the airway
• Medications that reduce inflammation
• Medications that control the inflammatory cells
• There are several ways to use an MDI. If you are not using a spacer, the technique most often recommended is as follows:
• Shake the MDI vigorously.
• Hold the MDI upright so the mouthpiece is at the bottom.
• Hold the mouthpiece 1-and-1/2 to 2 inches in front of an open mouth (about 2 to 3 finger widths).
• Breathe out normally.
• Press the MDI down once so it releases a spray of medicine into the mouth while you breathe in slowly (one spray is often called a puff).
• Continue breathing in as slowly and deeply as possible.
• Hold the breath for 10 seconds or as long as is comfortable (this gives the medicine time to reach the small airways).
Breathe out slowly.
• After taking a few normal breaths, repeat steps 1 through 8 for another inhalation (puff) if required. Take the number of puffs prescribed by our office.