4

Chapter 4


Questions



  1. 61. Volumetric flow rate decreases with an increase in:

    1. A. Pressure difference
    2. B. Vessel radius
    3. C. Vessel length
    4. D. Blood viscosity
    5. E. Vessel length and blood viscosity

  2. 62. Which of the following on a color Doppler display is represented in real time?

    1. A. Gray-scale anatomy
    2. B. Flow direction
    3. C. Doppler spectrum
    4. D. Gray-scale anatomy and flow direction
    5. F. All of the above

  3. 63. Approximately how many pulses are required to obtain one line of color Doppler information?

    1. A. 1
    2. B. 100
    3. C. 10
    4. D. 10 000

  4. 64. Multiple focuses are not used in color Doppler imaging because:

    1. A. It would not improve the image
    2. B. Doppler transducers cannot focus
    3. C. Frame rates would be too low
    4. D. None of the above

  5. 65. Widening the color box on the display will _________ the frame rate.

    1. A. Increase
    2. B. No change
    3. C. Decrease
    4. D. Cannot be determined

  6. 66. The simplified Bernoulli equation is inapplicable under the following circumstances:

    1. A. Serial stenotic lesions
    2. B. Long, tubular lesions
    3. C. Both
    4. D. None of the above

  7. 67. The Bernoulli equation is an example of:

    1. A. Law of conservation of mass
    2. B. Law of conservation of energy
    3. C. Law of conservation of momentum
    4. D. None of the above

  8. 68. The continuity equation is an example of:

    1. A. Law of conservation of mass
    2. B. Law of conservation of energy
    3. C. Law of conservation of momentum
    4. D. None of the above

  9. 69. Effective regurgitant orifice area by the proximal isovelocity surface area (PISA) method is an example of:

    1. A. Law of conservation of mass
    2. B. Law of conservation of energy
    3. C. Law of conservation of momentum
    4. D. None of the above

  10. 70. Doppler calculation of aortic valve area is an example of:

    1. A. Law of conservation of mass
    2. B. Law of conservation of energy
    3. C. Law of conservation of momentum
    4. D. None of the above

  11. 71. Calculation of right ventricular systolic pressure from the tricuspid regurgitation velocity signal is an example of:

    1. A. Law of conservation of mass
    2. B. Law of conservation of energy
    3. C. Law of conservation of momentum
    4. D. None of the above

  12. 72. Color flow jet area of mitral regurgitation depends upon:

    1. A. Amount of regurgitation alone
    2. B. Driving pressure and the regurgitant volume
    3. C. Presence of aortic regurgitation
    4. D. Degree of mitral stenosis

  13. 73. Factors influencing mitral regurgitation jet volume also include:

    1. A. Proximity of left atrial wall
    2. B. Heart rate
    3. C. Gain setting
    4. D. Filter setting
    5. E. Left atrial size
    6. F. All of the above

  14. 74. Amount of mitral regurgitation depends upon:

    1. A. Regurgitant orifice size
    2. B. Driving pressure
    3. C. Duration of systole
    4. D. All of the above

  15. 75. Hemodynamic impact of a given volumetric severity of mitral regurgitation (MR) is increased by:

    1. A. Nondilated left atrium
    2. B. Left ventricular hypertrophy
    3. C. Presence of concomitant aortic regurgitation
    4. D. All of the above
    5. E. None of the above

  16. 76. Which feature is consistent with severe mitral regurgitation:

    1. A. Jet size to left atrial area ratio of 0.5
    2. B. The PISA radius of 1.2 cm at an aliasing velocity of 50 cm/s
    3. C. Effective regurgitant orifice area of 0.7 cm2
    4. D. All of the above
    5. E. None of the above

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Jun 12, 2016 | Posted by in CARDIOLOGY | Comments Off on 4

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