What is the first step in administering a metered-dose inhaler (MDI)?

The first step in administering a metered-dose inhaler (MDI) is shaking the inhaler. This action ensures that the medication is properly mixed and that the propellant is evenly distributed, allowing for the correct dosage to be delivered with each actuated puff. Shaking the inhaler also helps to homogenize the medication and propellant mixture, which is essential for effective delivery and absorption of the medication into the lungs.

Once the inhaler is shaken, it can then be positioned appropriately in the mouth or inhaled, and the user can exhale completely to prepare their lungs for medication. Proper technique is crucial to maximize the effectiveness of the inhalation therapy and ensure that the medication reaches the appropriate sites in the respiratory system.