Cardiovascular Physiology, Stroke Volume

50 Questions | Total Attempts: 319

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Cardiovascular Physiology, Stroke Volume


Questions and Answers
  • 1. 
    Define stroke volume
    • A. 

      The amount of blood pumped by the left atrium in one contraction

    • B. 

      The amount of blood pumped by the left ventricle in one conctraction

    • C. 

      The amount of blood pumped by the right atrium in one contraction

  • 2. 
    Normal value of stroke volume
    • A. 

      70-110 ml

    • B. 

      30-70 ml

    • C. 

      110-150 ml

  • 3. 
    Define fractional shortening
    • A. 

      The change in left ventricular internal dimension throughout the cardiac cycle

    • B. 

      The change in right ventricular internal dimension throughout the cardiac cycle

    • C. 

      The change in atrial internal dimension throughout the cardiac cycle

  • 4. 
    Normal value of fractional shortening
    • A. 

      15-20%

    • B. 

      30-45%

    • C. 

      45-60%

  • 5. 
    Define cardiac output
    • A. 

      The amount of blood ejected by the left atrium during a 1 minute interval

    • B. 

      The amount of blood that circulates the body during a 1 minute interval

    • C. 

      The amount of blood ejected by the ventricle during a 1 minute interval

  • 6. 
    Normal value of cardiac output
    • A. 

      1-4 liters per minute

    • B. 

      4-8 liters per minute

    • C. 

      8-12 liters per minute

  • 7. 
    Define ejection fraction
    • A. 

      Percentage of blood being ejected from the ventricle during systole

    • B. 

      Percentage of blood being ejected from the atria during diastole

    • C. 

      Percentage of blood being ejected by the ventricle during a 1 minute interval

  • 8. 
    Normal value of ejection fraction
    • A. 

      Less than 25%

    • B. 

      Greater than 50% up to 75%

    • C. 

      Greater than 25% up to 50%

  • 9. 
    The apical views are indispensable for...
    • A. 

      Assessing proper blood flow

    • B. 

      Assessing global and regional atria function

    • C. 

      Assessing global and regional ventricular function

  • 10. 
    The apical views should appear...
    • A. 

      Oblong

    • B. 

      Horizontal

    • C. 

      Invisible

  • 11. 
    In the apical 4 view, it is possible to see at least 2 ________ entering the inferior portion of the left atrium.
    • A. 

      Pulmonary arteries

    • B. 

      Pulmonary veins

    • C. 

      Coronary arteries

  • 12. 
    The Apical 4 chamber view is useful in...
    • A. 

      Assessing RV wall motion abnormalities

    • B. 

      Assessing LV wall motion abnormalities

    • C. 

      Assessing aortic valve motion abnormalities

  • 13. 
    The Apical 4 view can be used when...
    • A. 

      Assessing blood flow through the PV and TV

    • B. 

      Assessing blood flow through the MV and AOV

    • C. 

      Assessing blood flow through the MV and TV

  • 14. 
    In the Apical 5 chamber view, the ultrasound beam transverses the...
    • A. 

      RVOT and PV

    • B. 

      LVIT and MV

    • C. 

      LVOT and AOV

  • 15. 
    The Apical 2 chamber view allows us to visualize the...
    • A. 

      LA, RA & MV

    • B. 

      LA, LV & MV

    • C. 

      RA, RV & TV

  • 16. 
    The Apical 2 chamber view allows visualization of...
    • A. 

      Posterior and Inferior walls and is important in evaluating segmental wall motion abnormalities

    • B. 

      Anterior and Superior walls and is important in evaluating IVS motion abnormalities

    • C. 

      Anterior and Inferior walls and is important in evaluating segmental wall motion abnormalities

  • 17. 
    Apical 3 Chamber view is also known as...
    • A. 

      Apical Short Axis View

    • B. 

      Apical Long Axis View

    • C. 

      Apical Transverse View

  • 18. 
    The structures visualized in the Apical 3 view are the...
    • A. 

      LV, LVOT, LA, MV, proximal aorta

    • B. 

      RV, RVOT, RA, TV, IVS

    • C. 

      RV, RVOT, RA, PV, MPA

  • 19. 
    Which part in the Apical 4 view can be evaluated for thrombi or aneurysms?
    • A. 

      LA

    • B. 

      RA

    • C. 

      LV

  • 20. 
    Define preload
    • A. 

      The volume or pressure that exists in the ventricles at end-diastole

    • B. 

      The resistance a ventricle faces during ejection

    • C. 

      The volume or pressure that exists in the ventricles at end-systole

  • 21. 
    According to Frank Starling Law, the pulmonary wedge pressure reflects the pressure in the...
    • A. 

      Right Ventricle

    • B. 

      Right Atrium

    • C. 

      Left Atrium

  • 22. 
    According to Frank Starling Law, the right ventricular filling pressure is reflected by....
    • A. 

      Right ventricular pressure or central venous pressure

    • B. 

      Left atrial pressure or central venous pressure

    • C. 

      Right atrial pressure or central venous pressure

  • 23. 
    The term used to describe the resistance a ventricle faces during ejection is...
    • A. 

      Preload

    • B. 

      Afterload

    • C. 

      Stroke volume

  • 24. 
    An increase in afterload will lead to an increase in cardiac contraction and therefore an increase in cardiac performance.
    • A. 

      True

    • B. 

      False

  • 25. 
    Force refers to the load production that the myocardial fiber must produce. 
    • A. 

      True

    • B. 

      False

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