Before inspiration and actuation of a metered-dose inhaler, the patient should exhale to which of the following?

Question

Quizplus · Accepted Answer

Before inspiration and actuation of a metered-dose inhaler, the patient should exhale to functional residual capacity. This is because exhaling to residual volume or total lung capacity can cause air trapping, while exhaling to expiratory reserve volume can lead to incomplete emptying of the lungs and reduced drug deposition. Functional residual capacity is the volume of air remaining in the lungs after a normal exhalation.

Before Inspiration and Actuation of a Metered-Dose Inhaler, the Patient