What is the correct sequence for using a metered-dose inhaler (MDI)?

What is the correct sequence for using a metered-dose inhaler (MDI)?

• A. Place in mouth, inhale, puff, hold breath, exhale slowly
• B. Inhale first, then press the inhaler
• C. Shake, place in mouth, breath in as puff released, hold breath, exhale slowly
• D. Puff while exhaling rapidly

Answer: (C)

The essential idea is to coordinate the spray with the start of a slow, deep inhale so the medication reaches the lungs. Start by shaking the inhaler to mix the dose, then exhale completely away from the device. Place the mouthpiece between your lips, begin a slow inhale, and press the canister to release the spray as you start inhaling. Continue breathing in to fill your lungs, then hold your breath for about 5–10 seconds to give the medicine time to settle in the airways, and finally exhale slowly. If you use a spacer, you’ll still aim to inhale as you release the mist from the device. This approach maximizes the amount of medication that reaches the lungs and improves effectiveness.

The essential idea is to coordinate the spray with the start of a slow, deep inhale so the medication reaches the lungs. Start by shaking the inhaler to mix the dose, then exhale completely away from the device. Place the mouthpiece between your lips, begin a slow inhale, and press the canister to release the spray as you start inhaling. Continue breathing in to fill your lungs, then hold your breath for about 5–10 seconds to give the medicine time to settle in the airways, and finally exhale slowly. If you use a spacer, you’ll still aim to inhale as you release the mist from the device. This approach maximizes the amount of medication that reaches the lungs and improves effectiveness.