Author Question: How much patient effort is needed to trigger a ventilator breath when there is 8 cm H2O of ... (Read 48 times)

P68T · **on:** Jul 16, 2018

How much patient effort is needed to trigger a ventilator breath when there is 8 cm H2O of un-intended positive end-expiratory pressure (auto-PEEP) and a pressure trigger setting of 2 cm H2O?

a. 2 cm H2O
b. 6 cm H2O
c. 8 cm H2O
d. 10 cm H2O

Question 2

Calculate the humidity deficit when a heat moisture exchanger (HME) provided 14 mg/L of wa-ter to the set tidal volume.

a. 14 mg/L of water
b. 23 mg/L of water
c. 30 mg/L of water
d. 37 mg/L of water

juwms · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: D
The effort required to trigger a breath equals the sum of the auto-PEEP and the pressure trigger setting.

Answer to Question 2

ANS: C
Humidity deficit = 44 mg/L absolute humidity