The operational verification procedure (OVP) involves checking ...

[plus1]

The operational verification procedure (OVP) involves checking the ventilator circuit for leaks. Ventilator settings that could be used to perform this procedure include which of the following?
 
  a. Tidal volume (VT) = 500 mL, Flow rate = 60 L/min, High pressure limit = 50 cm H2O
  b. VT = 1000 mL, Flow rate = 20 L/min, High pressure limit = maximum
  c. VT = 500 mL, Flow rate = 20 L/min, High pressure limit = maximum, Inspiratory pause = 2 seconds
  d. VT = 200 mL, Flow rate = Maximum, High pressure limit = 50 cm H2O, Inspira-tory pause = 1 second

Question 2

How often should the fractional inspired oxygen (FIO2) of an adult be measured?
 
  a. Twice daily
  b. Continuously
  c. Every patient-ventilator system check
  d. Every other patient-ventilator system check

[livaneabi]

Answer to Question 1

ANS: C
To check for leaks in the ventilator circuit the operator should set the tidal volume to 500 mL, the gas flow low (e.g., 20 L/min), the maximum pressure limit high (e.g., 100-120 cm H2O), and an inspiratory pause of 1-2 seconds.

Answer to Question 2

ANS: C
The fractional inspired oxygen (FIO2) for a ventilated adult should be measured during each pa-tient-ventilator system check. Most ICU ventilators have oxygen analyzers that provide continu-ous monitoring of FIO2.