Which of the following techniques is appropriate when using a metered dose inhaler?

Using a metered dose inhaler (MDI) effectively requires specific techniques to ensure that the medication is delivered properly to the lungs. The recommended approach in this scenario involves shaking the inhaler 5-6 times before use and utilizing a spacer. This method enhances the medication's delivery into the airways, as the spacer helps to slow down the medication's movement, allowing for better absorption by the lungs.

Shaking the inhaler before use is crucial because it mixes the medication evenly within the canister. When combined with a spacer, the inhaler allows larger aerosol particles to be captured more effectively, increasing the chances of the medication reaching the deeper parts of the lungs where it is needed most. This is particularly beneficial for children, who may have difficulty coordinating their inhalation and actuation of the inhaler.

The other approaches do not illustrate the optimal technique for using a metered dose inhaler. For example, inhaling rapidly could lead to the medication not being effectively deposited in the lungs, as the particles may not have enough time to enter adequately. Holding the breath is important, but it is typically recommended to hold for about 10 seconds rather than just 5 seconds to allow for better drug absorption. Similarly, forceful exhalation