Biochemistry MCQ 002

11. Reason of metabolic alkalosis may be:
1. CO2 retention
2. Organic acids retention
3. Loss of potassium ions
4. Hyperventilation
5. Hypoventilation
12. Respiratory alkalosis develops due to:
1. Hyperventilation
2. Excessive vomiting
3. Tumors of oesophagus
4. Infusion of alkaline solutions
5. Hypoventilation
13. Patient suffering from respiratory failure should be given oxygen therapy if
PO2 in arterial blood is less than:
1. 50 mm Hg
2. 60 mm Hg
3. 70 mm Hg
4. 80 mm Hg
5. 100 mm Hg
14. Reference values of plasma bicarbonate concentration are:
1. 18-26 mmol/l
2. 21-27 mmol/l
3. 35-45 mmol/l
4. 25-30 mmol/l
5. 31-37 mmol/l
15. Reference values of arterial blood pH are:
1. 7,50-7,60
2. 7,35-7,60
3. 7,35-7,45
4. 7,25-7,45
5. 7,25-7,35
16. Life threatening bicarbonate ions concentration is above:
1. 35 mmol/l
2. 38 mmol/l
3 27 mmol/l
4 40 mmol/l
5. 29 mmol/l
17. Titrable acidity is:
1. Quantity of ammonium ions excreted in urine
2. Quantity of excreted phosphate anions
3. Quantity of excreted free hydrogen ions
4. Free hydrogen ions level in blood
18. Life threatening respiratory acidosis is characterized by:
1. pH less than 7,35
2. pCO2 is above 60 mm Hg
3. pCO2 is above 50 mm Hg
4. pH less than 7,20
5. pH less than 7,30
19. Life threatening respiratory alkalosis is characterized by:
1. pH less than 7,35
2. pCO2 less than 20 mm Hg
3. pCO2 less than 25 mm Hg
4. pH more than 7,60
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5. pH more than 7,50
20. Life threatening metabolic alkalosis is characterized by:
1. pH more than 7,60
2. Plasma bicarbonate ions concentration is above 30 mmol/l
3. Plasma bicarbonate ions concentration is above 40 mmol/l
4. pH more than 7,45
5. pH more than 7,35