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Author Question: The Siggaard-Andersen alignment nomogram is used for which of the following? a. Calculating pH ... (Read 35 times)

karlynnae

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on: Jul 16, 2018
The Siggaard-Andersen alignment nomogram is used for which of the following?
 
  a. Calculating pH
  b. Measuring PCO2
  c. Calculating sodium (Na+), potassium (K+), chloride (Cl), and calcium (Ca++)
  d. Calculating actual and standard bicar-bonate

Question 2

Which of the following plasma electrolyte levels are outside the normal range?
 
  1. Total calcium 7.4 mEq/L
  2. Magnesium 2.0 mEq/L
  3. Potassium 4.2 mEq/L
  4. Chloride 115 mEq/L
  5. Sodium 175 mEq/L
  a. 1, 4, and 5 c. 2, 3, and 4
  b. 3, 4, and 5 d. 1


meryzewe

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

ANS: D
The Siggaard-Andersen alignment nomogram is used to calculate the actual and standard bicar-bonate, buffer base, and base excess concentrations.

Answer to Question 2

ANS: A
Normal values for the plasma electrolytes are as follows: Total calcium, 9.9-11 mEq/L; magnesi-um, 1.5-2.5 mEq/L; potassium, 3.5-5.0 mEq/L; chloride, 98-106 mEq/L; and sodium 136-145 mEq/L. Therefore, the total calcium is low, the chloride is high, and the sodium is high.


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