What is the normal range of PAO2 PaO2 for healthy young adults ...

[kodithompson]

What is the normal range of PAO2  PaO2 for healthy young adults breathing room air?
 
  a. 5 to 10 mm Hg
  b. 10 to 20 mm Hg
  c. 20 to 30 mm Hg
  d. 50 to 60 mm Hg

Question 2

In order to assess the events occurring at the tissue level, especially tissue oxygenation, what pa-rameter would you sample and measure?
 
  a. Coronary sinus blood
  b. Left-sided heart blood
  c. Systemic arterial blood
  d. Systemic mixed venous blood

[macagn]

Answer to Question 1

ANS: A
Rather than equaling the alveolar PO2, the PaO2 of healthy individuals breathing air at sea level is always approximately 5 to 10 mm Hg less than the calculated PAO2.

Answer to Question 2

ANS: D
To assess tissue gas exchange, the respiratory therapist must consider mixed venous blood pa-rameters. The use of mixed venous blood to assess tissue oxygenation also is discussed in Chap-ter 43.

[kodithompson]

Excellent

[smrtceo]

Thanks for the timely response, appreciate it