A 12-mm endotracheal tube is removed and replaced with a 6-mm endotracheal tube. What is the effect on resistance?

Name: A 12-mm endotracheal tube is removed and replaced with a 6-mm endotracheal tube. What is the effect on resistance?
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Question

Quizplus · Accepted Answer

Resistance to airflow in a tube is inversely proportional to the fourth power of the radius of the tube (according to Poiseuille's law). Halving the diameter (or radius) of the tube increases resistance by 2^4, or 16 times.

A 12-Mm Endotracheal Tube Is Removed and Replaced with a 6-Mm