How can the amount of cuff volume/pressure lost in the connecting tube be minimized during cuff measurement using a three-way stopcock, a manometer, and a syringe?
a. Using a four-way stopcock
b. Overinflating the cuff prior to measure-ment
c. Simultaneously inflating the cuff and ma-nometer
d. Pressurizing the manometer to 25 mm Hg prior to use
ANS: D
Pressurizing the manometer to 25 mm Hg before measuring the cuff pressure will ensure that the pressure/volume in the cuff will not be lost into the connecting tubing. Once pressurized, the three-way stopcock, syringe, and manometer system can be inserted into the pilot. With all three ways open, the cuff can be inflated or deflated while the pressure is being measured.
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