Author Question: When using a pressure-volume curve to identify optimal PEEP levels, what does the upper in-flection ... (Read 47 times)

Capo · **on:** Jul 16, 2018

When using a pressure-volume curve to identify optimal PEEP levels, what does the upper in-flection point represent?

a. Point of lung recruitment
b. Point of lung over distension
c. Optimal PEEP level
d. Optimal compliance level

Question 2

When performing a lung recruitment strategy, which of the following would cause the therapist to stop?

1. Mean blood pressure drops of 80 to 65 mm Hg.
2. Heart rate increases from 88 to 110/min.
3. Patient has a run of premature ventricular complexes.
a. 1 only
b. 2 only
c. 3 only
d. 1, 2, and 3

cclemon1 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
The upper inflection point may indicate lung overdistention.

Answer to Question 2

ANS: C
The recruitment maneuver is stopped if there is a decrease in SpO2 to less than 88, a significant change in heart rate (>140 beats/min or <60 beats>20 mm Hg from baseline) or the development of cardi-ac arrhythmia.