A/C (CMV)(VCV)

Question 0

VCV-Increasing set flow

Answer 0

Increases PIP, Raw

Decreases I-time, I:E, Cdyn

No change in Vt, PLAT, Cst

Question 1

VCV-Increase in set Vt

Answer 1

Increases Vt, I-time, PIP, PLAT, I:E,

No change in flow, compliance or resistance

Question 2

VCV-Change from square to descending waveform

Answer 2

Increases
-I-time, I:E, maybe Cdyn

Decreases
-Airway resistance

No change in Vt, flow, PLAT, Cst

Question 3

VCV-Increasing airway resistance

Answer 3

Increases
-PIP

Decreases
-Cdyn

No change in Vt, flow, Itime, PLAT, I:E, Cst

Question 4

VCV-Decreasing respiratory system compliance

Answer 4

Increases
-PIP, Pplat

Decreases
-Cdyn, Cst

No change in Vt, flow, I-time, I:E, Raw

Question 5

VCV-Air trapping

Answer 5

Increases
-PIP, Pplat

No other changes

Question 6

VCV- Patients effort exceeds the set flow

Answer 6

Decreases
-PIP (pull down the pressure)

No other changes

Question 7

VCV- Patients effort exceeds the set flow AND Vt

Answer 7

Decreases
-PIP, PLAT

No other changes

Question 8

VCV-Air Leak

Answer 8

Decreases
-PIP, PLAT

No other changes

Question 9

VCV- Patients RR increases

     RRT increases set RR

Answer 9

Increases the I:E ratio by decreasing the expiratory time

PIP and PLAT may increase if air trapping occurs

Question 10

VCV

Trigger, Limit, and Cycle

Answer 10

Trigger- Time or patient (flow, pressure), manually

Limit- Volume or Flow

Cycle- Time, Volume