Author Question: To describe what happens during the expiratory phase of mechanical ventilation, you must know the ... (Read 48 times)

BrownTown3 · **on:** Jul 16, 2018

To describe what happens during the expiratory phase of mechanical ventilation, you must know the value of which variable?

a. Limit
b. Cycle
c. Trigger
d. Baseline

Question 2

The volume waveform generated by a ventilator remains the same against changing lung me-chanics. Which of the following parameters might this device be controlling? 1. Volume 2. Flow 3. Pressure

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

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

Answer to Question 1

ANS: D
To describe what happens during expiration, we must know what baseline variable is in effect.

Answer to Question 2

ANS: A
If the ventilator controls flow, the flow and volume waveforms will remain consistent, but pres-sure will vary with changes in respiratory mechanics. Flow can be controlled directly using something as simple as a flow meter or as complex as a proportional solenoid valve. Flow can be controlled indirectly by controlling volume.