Packed Cell Volume (Hematocrit) Measurement
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Questions and Answers

What is the normal range of P.C.V for adult males?

  • 47 ± 7% (correct)
  • 42 ± 5%
  • 40 ± 5%
  • 50 ± 6%

    • What term is used to describe an increase in the volume of P.C.V above the reference range?

  • Polycythemia (correct)
  • Anemia
  • Leukemia
  • Hemolysis

    • Which condition is associated with an increase in hematocrit (PCV) value?

  • High Altitude (correct)
  • Bone marrow failure
  • Renal failure
  • Pregnancy

    • What type of anemia results from vitamin B12 and folic acid deficiency?

    <p>Megaloblastic Anemia</p> Signup and view all the answers

    What condition results in an increased level of circulating red blood cells in the bloodstream?

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

    What causes microcytic hypochromic anemia?

    <p>Chronic blood loss</p> Signup and view all the answers

    What is the main cause of bone marrow aplasia?

    <p>High-dose radiation or chemotherapy</p> Signup and view all the answers

    What are primary polycythemias due to?

    <p>Acquired or inherited genetic mutations causing high levels of red blood cell precursors</p> Signup and view all the answers

    What type of anemia makes the red blood cells fragile and prone to rupture easily through the capillaries?

    <p>Hemolytic Anemia</p> Signup and view all the answers

    What condition causes an increase in erythropoietin (EPO) production?

    <p>Burn Injury</p> Signup and view all the answers

    What is the term used to describe decrease in the volume of P.C.V below the normal range?

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

    What is the main function of Packed Cell Volume (Hematocrit) in the blood?

    <p>To reflect the volume of the red blood cells</p> Signup and view all the answers

    What is the average number of Red Blood Cells (RBCs) per cubic millimeter in healthy men?

    <p>5,200,000 (±300,000)</p> Signup and view all the answers

    Where are Red Blood Cells (RBCs) derived from?

    <p>Bone marrow</p> Signup and view all the answers

    What causes the production of greatly increased numbers of erythrocytes?

    <p>Exposure to low oxygen for a long time</p> Signup and view all the answers

    What is the average life span of Red Blood Cells (RBCs)?

    <p>120 days</p> Signup and view all the answers

    What is the primary component that constitutes about 45% of the blood volume?

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

    Which procedure involves sealing one end of a capillary tube with sealing clay?

    <p>Packed Cell Volume determination</p> Signup and view all the answers

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