A normal capnogram contains the most CO2 during which of the following phases?
a. 1 c. 3
b. 2 d. 4
ANS: C
During phase 1, there is essentially no CO2 because the gas is from the patient's dead space. In phase 2, CO2 from the alveoli mixes with gas from the smaller airways, causing the CO2 concen-tration to rise. During phase 3, the CO2 concentration curve remains at its highest level as alveolar gas is exhaled. Inspiration causes the measured exhaled CO2 level to fall to 0; this is phase 4.
You might also like to view...
The principle way dry chemical agent extinguishes fire is through the interruption of ______________
a. pyrolysis b. heat of vaporization c. decomposition of extinguishing agent d. chemical chain-breaking reactions
There are 6 grams of pure drug in 75 milliliters of solution. What is the percent strength of the solution?
What will be an ideal response?