How long after beginning mechanical ventilation on a patient ...

[lilldybug07]

How long after beginning mechanical ventilation on a patient should an arterial blood gas sample be drawn?
 
  a. 5 minutes
  b. 10 minutes
  c. 15 minutes
  d. 20 minutes

Question 2

The application of positive pressure for patients with left ventricular failure is beneficial because of which of the following?
 
  a. Increases venous return
  b. Decreases preload to the heart
  c. Increases afterload to the heart
  d. Improves perfusion to the myocardium

[heinisk01]

Answer to Question 1

ANS: C
An arterial blood gas sample should be obtained about 15 minutes following the initiation of mechanical ventilation. This is vital for the evaluation of the effectiveness of ventilation and ox-ygenation.

Answer to Question 2

ANS: B
The use of positive pressure in patients with left ventricular failure will reduce venous return and therefore reduce preload to the left ventricle.

[lilldybug07]

Correct answers!

[heinisk01]

Great! Please up vote