Hematocrit Levels Quiz
5 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What does the hematocrit test measure?

  • Percentage of red blood cells in blood (correct)
  • Percentage of fluid in blood plasma
  • Percentage of total blood volume
  • Percentage of white blood cells in blood

What causes low hematocrit levels?

  • Dehydration
  • Low production of red blood cells (correct)
  • Smoking
  • Genetic factors

What is a common cause of high hematocrit levels?

  • Pulmonary fibrosis (correct)
  • Increased hydration
  • Normal iron levels
  • Increased muscle mass

Normal hematocrit levels for women range from:

<p>35% to 50% (D)</p> Signup and view all the answers

Anemia is characterized by:

<p>Low levels of red blood cells (C)</p> Signup and view all the answers

Flashcards

Hematocrit

Percentage of red blood cells in blood.

Low Hematocrit

Red blood cell percentage below normal range.

Causes of Low Hematocrit

Bleeding, red blood cell destruction, decreased production, and nutritional problems.

High Hematocrit

Red blood cell percentage above normal range.

Signup and view all the flashcards

Causes of High Hematocrit

Dehydration, low oxygen, genetic factors, and over-production of red blood cells.

Signup and view all the flashcards

Study Notes

Hematocrit (PCV or HCT)

  • Hematocrit measures the percentage of red blood cells (RBCs) in blood.
  • Blood is mostly red blood cells and white blood cells suspended in serum (a clear fluid).
  • The hematocrit test shows the percentage of blood volume composed of red blood cells.

Normal Hematocrit Values

  • Normal hematocrit levels vary by sex.
  • Men: 41% to 50%
  • Women: 35% to 50%

Low Hematocrit (Anemia)

  • A low hematocrit means the percentage of red blood cells is below normal limits for the person's age, sex, or specific condition (like pregnancy or high altitude).
  • Causes include:
    • Bleeding (ulcers, trauma, colon cancer, internal bleeding)
    • Destruction of red blood cells (sickle cell anemia, enlarged spleen)
    • Reduced red blood cell production (bone marrow suppression, cancer, drugs)
    • Nutritional deficiencies (low iron, B12, folate, malnutrition)

High Hematocrit

  • A high hematocrit means the percentage of red blood cells is above the normal limits for the person's age, sex, or specific condition.
  • Causes include:
    • Dehydration (heat exhaustion, lack of fluids)
    • Low oxygen availability (smoking, high altitude, lung conditions)
    • Genetic conditions (congenital heart problems)
    • Overproduction of red blood cells (polycythemia vera, bone marrow issues)
    • Conditions affecting the lungs (COPD, chronic sleep apnea, pulmonary embolisms)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Hematocrit PDF

Description

Test your knowledge on hematocrit values and their significance in health. This quiz covers normal hematocrit levels, factors affecting low and high readings, and conditions related to red blood cell counts. Perfect for students studying biology or healthcare-related fields.

More Like This

Hematocrito, Anemia y Policitemia
6 questions
Anemias and Red Blood Cells
6 questions

Anemias and Red Blood Cells

IntelligibleVampire avatar
IntelligibleVampire
Anemia and Iron Deficiency Quiz from NJN
28 questions
Use Quizgecko on...
Browser
Browser