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Mechanical: Difference between revisions
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==Mechanical prosthetic valves== | ==Mechanical prosthetic valves== | ||
{| class="wikitable" cellpadding="0" cellspacing="0" border="0" | {| class="wikitable" cellpadding="0" cellspacing="0" border="0" width="800px" | ||
|- | |- | ||
|+ Normal Values Mechanical Aortic Valve Art<cite>1</cite> | |+ Normal Values Mechanical Aortic Valve Art<cite>1</cite> | ||
| Line 449: | Line 449: | ||
|} | |} | ||
{| class="wikitable" cellpadding="0" cellspacing="0" border="0" | {| class="wikitable" cellpadding="0" cellspacing="0" border="0" width="800px" | ||
|- | |- | ||
|+ Normal Values Mechanical Mitral valve art | |+ Normal Values Mechanical Mitral valve art<cite>1</cite> | ||
|- | |- | ||
!Valve | !Valve | ||
| Line 816: | Line 816: | ||
| | | | ||
|10.0 | |10.0 | ||
| | |||
| | | | ||
|1.4 | |1.4 | ||
|28 | |- | ||
|7 ± 2.75 | |28 | ||
| | |||
|7 ± 2.75 | |||
| | |||
| | |||
|1.9 ± 0.57 | |1.9 ± 0.57 | ||
|- | |||
|30 | |30 | ||
|12.2 ± 4.6 | |12.2 ± 4.6 | ||
| Line 827: | Line 833: | ||
|125 ± 25 | |125 ± 25 | ||
|1.65 ± 0.4 | |1.65 ± 0.4 | ||
|- | |||
|32 | |32 | ||
|11.5 ± 4.2 | |11.5 ± 4.2 | ||
| Line 833: | Line 840: | ||
|110 ± 25 | |110 ± 25 | ||
|1.98 ± 0.4 | |1.98 ± 0.4 | ||
|34 | |- | ||
|5.0 | |34 | ||
| | |||
|5.0 | |||
| | |||
| | |||
|2.6 | |2.6 | ||
|} | |} | ||
==Leakage== | |||
There is slight insufficiency, in all of the mechanical prosthetic valves it is the flow that is needed to allow the valve can be closed and keep the valve free from clots. This flow is due to the hinges of the valve. The degree of leakage and lekpatroon is by design prosthetic valve depends. At a St Jude can sometimes five small flames are observed. TEE This leakage is generally low. | |||
==Mitral regurgitation with prosthetic valve== | |||
Hemodynamically significant (at least moderate) mitral regurgitation with prosthetic valves without obstruction. ( PHT <120 msec) | |||
Peak inflow velocity > 1.9 m/s (CW - Doppler) | |||
Peakgradiënt > 14 mmHg (CW - Doppler) | |||
TVI MV inflow (CW - Doppler/TVI LVOT (PW Doppler) > 2.5 | |||
These measurements can help you on the spot. Alert pathological mitraliskunstklep leakage after further research is needed with TEE. | |||
[[Image: Video]] | |||
==Related valve dysfunction with mechanical prostheses== | |||
Bjork- Shiley: strut fracture | |||
Carbomedics: degeneration disc | |||
Hancock bioprosthesis: Distortion stents causing stenosis | |||
Carpentier Edwards bioprosthesis: tear/holes in leaflets and development of stenosis | |||
==References== | ==References== | ||