What is the moisture output of a heat and moisture exchanger (HME), according to this author?
A. 10 to 14 mg H2O/L
B. 15 to 19 mg H2O/L
C. 20 to 24 mg H2O/L
D. >25 mg H2O/L
?ANS: A
A. Correct response: Heat and moisture exchangers (HMEs) are passive humidifiers that function similarly to the nose. Hence, they are sometimes called artificial noses. HMEs are not as efficient as hygroscopic condenser humidifiers (HCHs). HME devices have a moisture output somewhere within the range of 10 to 14 ml of H2O/liter at tidal volumes ranging from 500 ml to 1,000 ml.
B. Incorrect response: See explanation A.
C. Incorrect response: See explanation A.
D. Incorrect response: See explanation A.
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