The patient trigger that requires the least amount of work of ...

[Bob-Dole]

The patient trigger that requires the least amount of work of breathing for the patient is which of the following?
 
  a. Time
  b. Flow
  c. Pressure
  d. Volume

Question 2

The limit variable set on a mechanical ventilator will do which of the following?
 
  a. End inspiration
  b. Begin inspiration
  c. Control the maximum value allowed
  d. Control the minimum value allowed

[welcom1000]

Answer to Question 1

ANS: B
When set properly, flow triggering has been shown to require less work of breathing than pres-sure triggering.

Answer to Question 2

ANS: C
A limit variable is the maximum value a variable can attain. It limits the variable during inspira-tion but does not end the inspiratory phase. The cycle setting ends inspiration. The trigger varia-ble begins inspiration, and there is no control over the minimum value.