You are about to suction a 10-year-old patient who has a 6-mm (internal diameter) endotracheal tube in place. What is the maximum size of catheter that you would use in this case?
A) 6 Fr
B) 8 Fr
C) 10 Fr
D) 14 Fr

Question

Quizplus · Accepted Answer

The maximum size of suction catheter that can be safely used in a patient with a 6-mm internal diameter endotracheal tube is calculated using the formula (ID in mm x 2) - 2, where ID is the internal diameter of the endotracheal tube. For a 6-mm tube, this calculation is (6 x 2) - 2 = 10 Fr.

You Are About to Suction a 10-Year-Old Patient Who Has