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10 Cards in this Set
- Front
- Back
How many types of prosthetic valves are there? |
1) Mechanical made from stainless steel or Dacron Graf. |
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Definition of mechanical valves?
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1) are synthetic metalic valves |
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What are the types of mechanical valves
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1) Ball & Cage "Starr Edwards Valve " most common
2) Tilting Disc "Bjork-Shiley" 3) Bi-Leaflet "St. Jude" least stenotic. |
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What are the types of Bio-prosthetic valves?
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1) Porcine "Carpentier Edwards" most common, can be see as a crown; it is use for the semilunar valves ( Aortic & Pulmonic). |
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What is the ideology for prosthetic valves?
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1) Native valves are replaced for regurgitation & infarction.; valve repair are becoming more common with porcine & bovine specially in the mitral valve |
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What is the pathophysiology of the prosthetic valves?
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1) Complications include systemic embolisation. |
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What are the physical signs of prosthetic valves?
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1) Mechanical valves have a systolic click. |
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What are the echo findings?
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1) They are specific to each valve.
2) Valve motion is best study by M-mode to record maximum disc motion. 3) TEE is very helpful for the evaluation of vegetation and trumbus. |
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What are the findings in Doppler?
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1) Normal mechanical prosthetic valve will have some regurgitation. |
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What we do to evaluate prosthetic valves?
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1) Zoom in.
2) Doppler. 3) Trace the entire wave form. 4) CW. 5) Mitral prosthetic Peak velocity 1.5 to 2 meters/second Mean grading 3-7 mmHg 6) Aortic prosthetic Peak velocity 2 to 3 meters/second. Mean grading 14 - 20 mmHg. |