Mitral Valve Disease in Echo

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Author:
bjlewis44
ID:
192272
Filename:
Mitral Valve Disease in Echo
Updated:
2013-01-11 14:30:31
Tags:
Mitral Regurgitation Stenosis Echo
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Description:
Mitral & stenosis & regurgitation in Echo
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  1. Auscultation
    listening to sound in the body
  2. MR signs
    • Fatigue
    • DOE
    • Palpitations
    • Severe orthopnea
    • L and/or R Heart Failure
  3. What is Mitral Regurgitation
    backwards flow of blood through the MV during systole (most common)
  4. Is MR the same as Mitral Insufficiency
    • No. But commonly referred to as.
    • Regurg results from Insufficiency.
  5. How long does MR last?
    Intermittent; acute; chronic
  6. Ways to treat MR:
    • Prophylactic antibiotics
    • Catheter balloon valvuloplasty
    • Commissurotomy
    • Mitral Valve Replacement
  7. What is the most common treatment for MR
    MV replacement
  8. Ways to determine MV Area (MVA):
    • Planimetry
    • Pressure Half time
    • Continuity Equation
    • PISA
  9. Planimetetry of MV?
    • trace valve orifice (opening) in PSAX.
    • Must find smallest on-axis opening
  10. Pressure Half Time (PHT) of MV?
    Valve Area calculated by dividing measured PHT into 220 (constant).
  11. How many times must PHT be measured in patients showing indications of A-Fib?
    Multiple because it gives a rough estimate of what their actual pressure values are during erratic streak.
  12. Can PHT be measured accurately after a balloon valvuloplasty?
    No. Because the recent balloon inserted in their valve would show faulty values of what their body was actually producing.
  13. Where is PHT measured?
    • Spectral Wave Doppler of MV leaflet tips during dystole.
    • the E-F descending slope, is then measured.
  14. What is PHT used for?
    Calculation mitral valve Area
  15. What is the PISA method used for?
    Calculating MV Area
  16. What does PISA stand for?
    • Proximal
    • Isovelocity
    • Surface
    • Area
  17. Why is PISA rarely used?
    Not easily reproducible by sonographers
  18.  Principle behind PISA
    stipulates that unobstructed flow convergence equates to concentric acceleration. Shows acceleration at different points in time
  19. How to measure PISA
    • 1. A4C - Zoom MV
    • 2. Apply Color doppler
    • 3. Shift of zero baseline upward (Nyquist Limit)
    • 4. Save to Cine loop
    • 5. Freeze best frame to measure radius of MR in LA

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