Pulm CCM 3

Question 1

Appearance of tube condensation on flow or pressure vent waveforms

Answer 1

sawtooth pattern in expiratory phase

Question 2

Better predictor of tolerating tracheostomy decannulation than capping trial

Answer 2

suctioning ≤2x/8 hrs

Question 3

In pressure control, obstruction or restriction will reduce _____ and _____.

Answer 3

flow; volume

Question 4

What differentiates obstruction from restriction in pressure control modes?

Answer 4

obstruction prolongs expiratory time

Question 5

In pressure control, acute reduction in compliance will cause what change in flow waveform?

Answer 5

expiratory flow will return to zero quickly

Question 6

transpulmonary pressure =

Answer 6

Pplat - end-inspiratory pleural pressure

Question 7

How is end-inspiratory pleural pressure measured?

Answer 7

esophageal manometry

Question 8

Safe transpulmonary pressure is less than ___

Answer 8

30

Question 9

What is the pleural pressure in a passively breathing patient on positive pressure ventilation?

Answer 9

zero

Question 10

What is pleural pressure in passively ventilated obese patient?

Answer 10

positive