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Author Question: Which of the following are electrolytes? 1. Partial pressure of oxygen at 50 saturation (P50) 2. Na+ ... (Read 16 times)

jho37

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on: Jul 16, 2018
Which of the following are electrolytes? 1. Partial pressure of oxygen at 50 saturation (P50) 2. Na+ 3. Ca++ 4. HHb 5. HCO3
 
  a. 2 and 3 c. 2, 3, and 5
  b. 1, 3, and 4 d. 2, 3, 4, and 5

Question 2

Approximate the corresponding saturation for a PaO2 of 80 mm Hg under normal acid-base con-ditions by using the oxyhemoglobin dissociation curve in the figure.
 
  a. 80 c. 90
  b. 85 d. 95


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Edwyer

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: A
Sodium and calcium are electrolytes. P50 is the partial pressure of oxygen at 50 saturation. HHb is deoxygenated hemoglobin, and HCO3 is bicarbonate.

Answer to Question 2

ANS: D
Find 80 mm Hg on the x-axis of the oxyhemoglobin dissociation curve, and draw a straight ver-tical line up to the dissociation curve. Then from that point, draw a horizontal line across to the y-axis. That will give the saturation.


jho37

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

Liddy

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Reply 3 on: Yesterday
Wow, this really help

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