Chapter 6; Initial Ventilator Settings

Chapter 6; Initial Ventilator Settings

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. Calculate the tubing compliance (C_T) when the measured volume is 100 mL and the static pressure is 65 cm H₂O.

a.	0.0015 mL/cm H2O
b.	0.65 cm H2O/mL
c.	1.5 mL/cm H2O
d.	6.5 mL/cm H2O

 

 

ANS:   C

Calculate tubing compliance (C_T) by dividing measured volume by measured static pressure.

 

DIF:    2                      REF:    pg. 87| pg. 88

 

2. Calculate the tubing compliance (C_T) when the measured volume is 150 mL and the static pressure is 53 cm H₂O.

a.	0.003 mL/cm H2O
b.	0.35 cm H2O/mL
c.	2.8 mL/cm H2O
d.	7.95cm H2O/mL

 

 

ANS:   C

Calculate tubing compliance (C_T) by dividing measured volume by measured static pressure.

 

DIF:    2                      REF:    pg. 88| pg. 89

 

3. When initially setting up a ventilator the plateau pressure (P_Plateau) is measured at 47 cm H₂O with a set volume of 100 mL. After applying the ventilator to the patient, the average peak pressure reached during volume delivery is 28 cm H₂O. How much volume is lost in the ventilator tubing?

a.	13 mL
b.	60 mL
c.	147 mL
d.	168 mL

 

 

ANS:   B

Calculate tubing compliance (C_T) by dividing measured volume by measured static pressure. The amount of volume lost to the circuit equals the pressure reached during a tidal volume (V_T) delivery multiplied by the C_T factor.

 

DIF:    2                      REF:    pg. 89

 

4. When initially setting up a ventilator, the plateau pressure (P_Plateau) is measured at 68 cm H₂O with a set volume of 200 mL. After applying the ventilator to the patient, the average peak pressure reached during volume delivery is 22 cm H₂O. How much volume is lost in the ventilator tubing?

a.	0.064 mL
b.	7.5 mL
c.	64.7 mL
d.	95.7 mL

 

 

ANS:   C

Calculate tubing compliance (C_T) by dividing measured volume by measured static pressure. The amount of volume lost to the circuit equals the pressure reached during a tidal volume (V_T) delivery multiplied by the C_T factor.

 

DIF:    2                      REF:    pgs. 88-90

 

5. Calculate the volume lost if the tubing compression factor is 2.5 mL/cm H₂O and the pressure change during ventilation is 32 cm H₂O.

a.	2.5 mL
b.	12.8 mL
c.	64 mL
d.	80 mL

 

 

ANS:   D

The amount of volume lost to the circuit equals the pressure reached during a tidal volume (V_T) delivery multiplied by the tubing compliance (C_T) factor.

 

DIF:    2          REF:    pg. 89| pg. 90