Which of the following are associated with sidestream capnographs? 1. Delayed reporting times 2. Addition of dead space to the airway 3. Increased risk of inappropriate extubation 4. Increased risk of plugging of the sample tubing
a. 1 and 2 c. 2 and 4
b. 1 and 3 d. 3 and 4
ANS: B
Sidestream capnographs show a slight delay between sampling and reporting times because of the time required to transport the sample from the airway to the sample chamber. The plastic tube that transports sample gas from the airway to the analyzer is prone to plugging by water and se-cretions, and therefore can lead to erroneous readings.
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