This topic contains a solution. Click here to go to the answer

Author Question: Which of the following variables can be calculated from measured arterial blood gas values? 1. The ... (Read 58 times)

BRWH

  • Hero Member
  • *****
  • Posts: 553
Which of the following variables can be calculated from measured arterial blood gas values? 1. The partial pressure of oxygen at which hemoglobin is 50 saturated (P50) 2. pH 3. PCO2 4. HCO3 5. SaO2
 
  a. 1, 3, and 4 c. 1, 4, and 5
  b. 2, 4, and 5 d. 2 and 3

Question 2

A P50 measurement refers to which of the following?
 
  a. The amount of oxygen diffusion in fluids
  b. The PO2 when hemoglobin is 50 satu-rated with oxygen
  c. The partial pressure of fetal hemoglobin at 50 saturation
  d. The partial pressure of oxygen consumed by the oxygen electrode



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Anna

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

ANS: C
The P50 can be derived by using the oxyhemoglobin dissociation curve to look for the PaO2 at 50 hemoglobin saturation. The HCO3 is derived from measurements of pH and PaCO2 by using the Henderson-Hasselbalch equation. The saturation of hemoglobin can be calculated by using an equation empirically derived from the oxyhemoglobin saturation curve. The pH is measured di-rectly by using a Sanz electrode, and the PaO2 is measured directly by using a Clark electrode.

Answer to Question 2

ANS: B
P50 is a convenient way of describing hemoglobin affinity for oxygen because it identifies the PO2 in millimeters of mercury when hemoglobin is 50 saturated with oxygen.




BRWH

  • Member
  • Posts: 553
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)


sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Excellent

 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

For a complete list of videos, visit our video library