What is the optimal position of the endotracheal tube following intubation as seen on the chest radiograph?
a. 1 to 2 cm above the carina
b. 3 to 4 cm above the carina
c. 5 to 7 cm above the carina
d. In the upper third of the carina
ANS: C
Goodman and Putman suggest that when the head and neck are in the neutral position, the endo-tracheal tube should be midtrachea (5 to 7 cm from the carina).
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