Author Question: Which of the following are features of an ideal heat and moisture exchanger (HME)? 1. High ... (Read 49 times)

Tirant22 · **on:** Jul 16, 2018

Which of the following are features of an ideal heat and moisture exchanger (HME)? 1. High compliance 2. Minimal dead space 3. 70 or higher efficiency 4. Minimal flow resistance

a. 1 and 3 only
b. 2, 3, and 4 only
c. 2 and 4 only
d. 1, 2, 3, and 4

Question 2

Which of the following are types of heat and moisture exchangers (HMEs)? 1. Simple condenser 2. Hygroscopic condenser 3. Hydrophobic condenser

a. 1 and 2 only
b. 2 and 3 only
c. 1, 2, and 3
d. 3 only

bigcheese9 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: A
The ideal HME should operate at 70 efficiency or better (providing at least 30 mg/L water va-por); use standard connections; have a low compliance; and add minimal weight, dead space, and flow resistance to a breathing circuit.

Answer to Question 2

ANS: C
There are three basic types of HMEs: (1) simple condenser humidifiers, (2) hygroscopic conden-ser humidifiers, and (3) hydrophobic condenser humidifiers.