What is the approximate normal CaO2 CO2 in a healthy adult at ...

[vicky]

What is the approximate normal CaO2  CO2 in a healthy adult at rest?
 
  a. 5 ml/dl
  b. 15 ml/dl
  c. 20 ml/dl
  d. 250 ml/dl

Question 2

Given the following blood parameters, compute the total O2 content (dissolved + HbO2) of the blood in ml/dl: Hb = 16; PO2 = 625 Hg; SO2 = 100.
 
  a. 17.8 ml/dl
  b. 19.4 ml/dl
  c. 21.4 ml/dl
  d. 23.3 ml/dl

[yotaSR5]

Answer to Question 1

ANS: A
As indicated in Table 12-2, the difference between the normal arterial and venous O2 contents is approximately 5 ml/dl.

Answer to Question 2

ANS: D
The respiratory therapist obtains a sample of arterial blood from a patient breathing 100 O2. The PO2 is 625 mm Hg, Hb is 16 g/dl, and the O2 saturation is 100. To compute the total O2 con-tent, the respiratory therapist should apply the aforementioned equation as follows:
CaO2 = (0.003  PaO2) + (Hbtot  1.34  SaO2)
CaO2 = (0.003 ml  625 mm Hg) + (16 g/dl  1.34  1.0)
CaO2 = (1.875 ml) + (21.44 g/dl)
CaO2 = 23.3 ml/dl

[vicky]

TYSM

[bimper21]

Excellent