Thursday, March 17, 2011

Answers to Clinical Chemistry Review Questions - Blood Gas Analysis

Clinical Chemistry Review Questions vary in difficulty and complexity. Here are some basic questions which can help you review common principles in Clinical Chemistry.

Select the BEST ANSWER.

1. The most common sample specimen in clinical chemistry is:

a. Plasma c. whole blood

b. Serum d. buffy coat

2. In enzyme analysis, the following should be monitored closely, EXCEPT:

a. Temperature c. pH

b. Concentration of substrate d. non-competitive inhibitor

3. Electrolytes are called amphoteric substances because of this reason:

a. They can either be negatively or positively charged

b. They can be water or non-water soluble

c. They can transform from one energy form to another

d. They are directly transported in the blood stream.

4. The following statements are true of electrophoresis, EXCEPT:

a. It is a method to separate proteins from one another

b. The media can be paper, agar gel or cellulose

c. The principle depends upon their ability to fluoresce

d. Electrophoretic mobility is based on the charges of the ions.

5. In the maintenance of normal blood pH, these two organs are involved:

a. Lungs and heart c. lungs and kidneys

b. Kidneys and heart d. kidneys and liver

Choices for numbers 6 to 10

a. Uncompensated metabolic alkalosis

b. Uncompensated metabolic acidosis

c. Uncompensated respiratory alkalosis

d. Uncompensated respiratory acidosis

e. Partially compensated metabolic alkalosis

f. Partially compensated metabolic acidosis

g. Partially compensated respiratory alkalosis

h. Partially compensated respiratory acidosis

i. Fully compensated metabolic alkalosis

j. Fully compensated metabolic acidosis

k. Fully compensated respiratory alkalosis

l. Fully compensated respiratory acidosis

m. None of the above

6. Given pH – 7.49, pCO2= 40 mmHg, HCO3 = 32 mmol/L, What do these values indicate?- partially compensated metabolic alkalosis

7. Given pH – 6.8, dCO2= 10 mmol/L, TCO2= 22 mmol/L, What do these values indicate?- partially compensated respiratory acidosis

8. Given pH- 7.43, HCO3= 29 mmol/L, pCO2 – 50 mmHg. What do these values indicate?- Fully compensated metabolic alkalosis


9. Given pH- 7.15, HCO3= 25 mmol/L, pCO2 – 60 mmHg. What do these values indicate? - Uncompensated respiratory acidosis.


U10. Given pH- 7.50, HCO3= 40 mmol/L, pCO2 – 40 mmHg. What do these values indicate?

- Uncompensated metabolic alkalosis

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