Initial Vent Settings

Question 1

Frequency (RR, f)

Answer 1

12-16 bpm

Question 2

Tidal Volume (Vt)

Answer 2

6-8 mL/kg of IBW
4-6 mL/ kg of IBW for ARDS

Question 3

Pressure control

Answer 3

10-15 cmH2O

Question 4

FiO2

Answer 4

100% initially, do not keep at < 50% to avoid O2 toxicity

Question 5

PEEP

Answer 5

5 cmH2O

Question 6

Inspiratory rise time

Answer 6

0-.4 seconds

Question 7

Sensitivity (2)

Answer 7

Pressure trigger - (-0.5 to -2) cmH2O
Flow trigger - 1 to 3 l/m

Question 8

Inspiratory flow rate

Answer 8

40-80 lpm

Question 9

I time

Answer 9

0.9 to 1.2 seconds

Question 10

I:E ratio

Answer 10

1:2 to 1:4

Question 11

If we must keep O2 over 50%, what should we consider adding?

Answer 11

PEEP

Question 12

What can lead to adding more than 5 cmH2O of PEEP?

Answer 12

Refractory hypoxemia

Question 13

What do we set the inspiratory rise time based on?

Answer 13

The pts air hunger

Question 14

Which is the more commonly used sensitivity and why?

Answer 14

Flow is more commonly used because it is more sensitive to the pts demands

Question 15

How can we ensure adequate flow?

Answer 15

By evaluating the flow/volume loop

Question 16

How can we increase the E time?

Answer 16

1. By increasing the flow rate or E time
2. By decreasing the I time, frequency or Vt