The MOST commonly used method of administering an inhaled medication in the emergency setting is:

a. Metered-dose inhaler
b. Dry powder inhalers
c. Small volume, or updraft inhaler
d. Endotracheal administration

c
Rationale: a. These are most commonly administered by the patient at home.
b. These medications are used for maintenance versus acute care.
c. Correct.
d. Endotracheal administration is reserved for cardiac arrest situations.