When adjusting the sensitivity control on an intermittent ...

[Caiter2013]

When adjusting the sensitivity control on an intermittent positive-pressure breathing device, which of the following parameters are you changing?
 
  a. Volume of gas delivered to the patient during inhalation
  b. Effort required to cycle the device off (end inspiration)
  c. Effort required to cycle the device on (begin inspiration)
  d. Maximum pressure delivered to the patient during inhalation

Question 2

Which of the following are appropriate initial settings for intermittent positive-pressure breathing given to a new patient?
 
  a. Sensitivity 2 cm H2O; pressure 20 to 25 cm H2O; high flow
  b. Sensitivity 3 to 4 cm H2O; pressure 5 to 10 cm H2O; moderate flow
  c. Sensitivity 1 to 2 cm H2O; pressure 10 to 15 cm H2O; moderate flow
  d. Sensitivity 8 cm H2O; pressure 15 cm H2O; moderate flow

[dpost18]

Answer to Question 1

ANS: C
The machine should be set so that a breath can be initiated with minimal patient effort.

Answer to Question 2

ANS: C
A sensitivity or trigger level of 1 to 2 cm H2O is adequate for most patients. Initially, system pressure is set to between 10 and 15 cm H2O.