Medical Biochemistry Quiz on Plasma Bicarbonate and Arterial Blood pH Values
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Questions and Answers

What are the reference values of arterial blood pH?

  • +7.35 7.45 units (correct)
  • -7.35 7.60 units
  • -7.50 7.60 units
  • -7.45 7.55 units

    • What are the reference values of pCO2 in arterial blood?

  • -45-55 mm Hg
  • -45-75 mmHg
  • +35-45 mm Hg (correct)
  • -55-65 mm Hg

    • What is the primary function of hemoglobin (Hb) in blood?

  • -partial pressure of oxygen in arterial blood
  • +carry oxygen (correct)
  • -a partial pressure of oxygen in mixed venous blood
  • +carry CO2 to lungs

    • If MCV > 100 fl, the type of anemia is known as?

    <p>Macrocytic anemia</p> Signup and view all the answers

    What is the life-threatening plasma bicarbonate concentration?

    <p>+&gt;40 mmol/l</p> Signup and view all the answers

    What are the life-threatening pCO2 values in arterial blood?

    <p>+60 mmHg</p> Signup and view all the answers

    What is the main intracellular CBS buffer?

    <p>hemoglobin</p> Signup and view all the answers

    What is the normal pH range of the bicarbonate buffer?

    <p>7.3 - 7.4</p> Signup and view all the answers

    Which enzyme is involved in the dissociation of carbonic acid in the renal tubules?

    <p>carbonic anhydrase</p> Signup and view all the answers

    What is the optimal anticoagulant when determining KBS indicators?

    <p>lithium salts of heparin</p> Signup and view all the answers

    Which of the following can cause respiratory acidosis?

    <p>with respiratory distress syndrome</p> Signup and view all the answers

    What is the PaO2 threshold for placing a patient with respiratory failure on mechanical ventilation?

    <p>less than 90 mmHg Art.</p> Signup and view all the answers

    What is the diagnostic value of HbA1c determination in blood?

    <p>Complex of glucose with HbAs</p> Signup and view all the answers

    What is the diagnostic criterion for diabetes based on fasting whole blood glucose levels?

    <p>&gt;7.8 mmol/l</p> Signup and view all the answers

    Which of the following values indicates diabetes mellitus 2 hours after glucose loading in whole venous blood?

    <p>&gt;11.1 mmol/l</p> Signup and view all the answers

    What type of anemia is characterized by macrocytic cells?

    <p>Macrocytic anemia</p> Signup and view all the answers

    What is a life-threatening plasma bicarbonate concentration level?

    <p>&lt;5 mmol/l</p> Signup and view all the answers

    Which value indicates diabetes mellitus 2 hours after glucose loading in whole capillary blood?

    <p>&gt;11.1 mmol/l</p> Signup and view all the answers

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