Laryngeal mask airways are useful in emergency situations because:
a. an appropriate size is easy to choose.
b. placement does not have to be checked.
c. they protect the lungs from aspiration.
d. minimum head and neck movement is re-quired.
ANS: D
The size of the laryngeal mask airway is based on the patient's weight and may not be easy to choose. The placement of a laryngeal mask airway must be checked by using measurements of end-tidal carbon dioxide (CO2) and breath sounds. Laryngeal mask airways do not protect the lungs from aspiration because they are noninvasive. Laryngeal mask airways are useful in emer-gencies because they do not require airway manipulation or extreme head positioning, which minimizes flexion and extension of the cervical spine for proper placement.
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