The major limitations of using a laryngeal mask airway are:
1. It should not be used in conscious or semicomatose patients.
2. Gastric distention may occur if ventilating pressures greater than 20 cm H2O are needed.
3. It does not provide absolute protection against aspiration of gastric contents.
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2, and 3
ANS: D
There are two major limitations to its use. First, it cannot be used in the conscious or semico-matose patient due to stimulation of the gag reflex. Second, if ventilating pressures greater than 20 cm H2O are needed, gastric distention may occur. In addition, it may not provide absolute protection against aspiration.
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