How would you estimate the appropriate length for a nasopharyngeal airway?
a. Subtract twice the diameter of the tube from its length.
b. Measure the distance from the earlobe to the Adam's apple.
c. Apply the estimating formula: length (cm) = 15 + (age รท 2).
d. Measure the distance from the earlobe to the tip of the nose.
ANS: D
The appropriate length can be estimated by measuring the distance from the patient's earlobe to the tip of the nose.
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