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43 Cards in this Set
- Front
- Back
Dysfunction of mechanical valves is usually due to: |
Thrombus, incomplete closure causing MR, or inadequate opening leading to stenosis. |
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Dysfunction of tissue valves is usually due to leaflet ______ causing regurgitation or _____ leading to stenosis. |
Degeneration Calcification |
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All prosthetic valves are at risk for _______. |
Endocarditis |
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Prosthetic valves are implanted when the patient has ______ significant valvular disease. For example: valves with ______, _____,______ and/or an _____ with severe AI. |
Hemodynamically Stenosis Regurg Infection Aortic dissection |
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The two main types of prosthetic valves include ____, and______. |
Bioprosthetic (biological tissue) Mechanical (synthetic) |
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Valve repairs with valvular rings are utilized when possible, particularly in cases of _____ valve repair. |
Mitral |
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Common brand names of valvular rings are _____, and _____ rings. |
Carpentier Duran |
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If you have an elderly patient where long term durability is less important, what valve would you use? Bio or mechanical? |
Bio |
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If you have a young adult or children needing a valve, not woman in child bearing years, what kind of valve is usually used? Bio or mechanical |
Mechanical |
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If a patient is requiring aortic root replacement, such as aortic dissection with severe aortic insufficiency, what valve would you use? Bio or mechanical? |
Mechanical |
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Patients with chronic anticoagulant problems should use what kind of valve? |
Bio, because they can't take blood thinners |
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Patients who have renal failure, or a small valve annulus, or are on blood thinners already would receive which valve? |
Mechanical |
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Types of bioprosthetic valves are _____, ______, and______. |
Autograft (self to self) Homograft (allograft) Heterograft ( xenograft) |
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With an autograph valve, they take an individual's pulmonic valve annulus and trunk relocate it to the ____ valve position. This also involves repositioning of the _____ _____. This is known as the_____ procedure. |
Aortic Coronary arteries Ross procedure |
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With autograft the remove the ____ _____ (thigh muscle covering) and utilize it as a bioprosthetic heart valve. |
Fascia lata |
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With a Homograft , the aortic valve or ______ _______ (brain covering) is utilized as a bioprosthetic heart valve. |
Dura mater |
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With homograft valves they may be mounted on ____ or_____. |
Stents Stentless |
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The benefit of the stentless valves is improved hemodynamics with a ____ PG. |
Decreased |
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With a homograft valve, they appear very similar to a____ |
Native valve |
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They use a _____ to take over for the heart and lungs. |
Cardiopulmonary bypass machine |
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With heterograft valves, they use a ______ valve or ____ valve. |
Porcine (pig) Bovine (cow) |
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With porcine valves they use the pigs _____ _____ valve that may be mounted on stents or stentless. |
Trileaflet aortic |
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With bovine valves they use the cows _____ as a trileaflet valve mounted on stents and a sewing ring. |
Pericardium |
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Common brand names of heterograft valves are _____, ______,______,_____,_____,_____. |
Carpentier-edwards Medtronic Hancock Ionescu-shiley Edwards prima plus Toronto SPV |
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Always compare prior echos to see if any changes occurred with bioprosthetic valves. When should the patient have an echo after getting new bio valve? |
Soon after valve repair so baseline can be documented |
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What can happen to bio valves that cause complications? |
Calcification All prosthetic valves are inherently stenotic! Thrombus Endocarditis Normal amount of regurg perivalvular leak Dehisence |
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A normal amount of ____ is present in most bio valves. A _____ small jet is considered normal. |
Regurg Single |
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All prosthetic valves are inherently _____. |
Stenotic |
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_____ occurs when the sutures in the sewing ring become looser and the prosthesis is no longer stable. This causes a ____ leak. |
Dehisence Perivalvular |
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Three types of mechanical valves are ___,____and____. |
Ball and cage (caged ball) Tilting disc Bileaflet tilting disc |
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The ball and cage valve is similar to native valve. What moves the ball? Common brand name is _____. |
Pressure Starr-Edwards |
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A single tilting disc creates a ____ and a___ orifice. Common brand name is___,___,____ and____. |
Major and a minor orifice Medtronic hall, Omnicarbon Monostrut Bjork-shiley |
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The bileaflet has two tilting discs that create three orifices that promote _____ flow making it the least ____ mechanical valve. Common brand names are ____,____,____ |
Central Stenotic St. Jude Carbomedics ATS open pivot |
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How soon should a patient get an echo after replacement? |
Soon after to get a baseline |
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All prosthetic valves are inherently stenotic, it depends on the ____,____ and____. |
Type Size Site |
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Complications of mechanical valves are 1-9 |
Thrombus Pannus (growth of tissue) Regurg , most have this, determined by the make and model Perivalvular leak (abnormal) Dehisence ( loose valve, may cause perivalvular leak) abcess Endocarditis Mechanical failure hemolysis
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2D echo |
Too lazy to type it |
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M-mode is useful for evaluating the prosthetic _____/______ motion. |
Poppet/disc |
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Color flow Doppler |
CW or PW |
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Stented bio valve |
Ball and cage Starr-Edwards |
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Tilting disc |
Bileaflet |
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K |
K |
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Tilting disc Medtronic hall |
Bileaflet Least stenotic St. Jude |