The size of a suction catheter should be:
a. a 12-French catheter.
b. the same as the internal diameter (ID) of the endotracheal tube.
c. two thirds the size of the outer diameter of the endotracheal tube.
d. less than half of the ID of the artificial airway.
ANS: D
The general recommendation is that the catheter diameter should be no more than half the inter-nal diameter of the artificial airway.
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