Final answer:
MDI stands for Metered Dose Inhaler, a device commonly used by individuals with asthma or COPD to deliver respiratory medication through inhalation.
Step-by-step explanation:
MDI stands for Metered Dose Inhaler. It is a device used for delivering respiratory medication that one inhales. MDIs are commonly used by individuals with asthma or chronic obstructive pulmonary disease (COPD) to deliver drugs directly into the airways.
Metered Dose Inhalers consist of a pressurized canister containing medication that fits into a specially designed plastic mouthpiece. When the MDI is actuated, a specific amount of medication is released in aerosol form which the patient then inhales. This method ensures the medication is delivered efficiently and directly to the lungs, providing quick relief from respiratory symptoms.