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The Hancock Aortic Tissue Valve is a prosthetic heart valve used in cardiac surgery to replace a damaged or diseased aortic valve. [1] It is a bioprosthetic valve, meaning it is constructed using biological tissues, specifically porcine (pig) valve tissue. [ 2 ]
The aortic valve normally has three cusps or leaflets, although in 1–2% of the population it is found to congenitally have two leaflets. [1] The aortic valve is the last structure in the heart the blood travels through before stopping the flow through the systemic circulation. [1]
The porcine valve was subjected to several modifications which reached the limits imposed by the fixed geometry of the pig's aortic valve. The pericardial valve, the embodiment of the concept of 'man-made' devices, lends itself to an infinite permutation of changes of shape and physico-chemical interventions in order to improve its function ...
The aortic valve is opened during systole, the driving force for it to open is the difference in pressure between the contracting left ventricle of the heart and the aorta. During cardiac diastole (when the heart chamber gets bigger) the aortic valve closes. [5] Aortic stenosis most commonly is the result of calcification of the cusps.
An aortic homograft is an aortic valve from a human donor, retrieved either after their death or from a heart that is removed to be replaced during a heart transplant. [12] A pulmonary autograft, also known as the Ross procedure , is where the aortic valve is removed and replaced with the patient's own pulmonary valve (the valve between the ...
Lawrence Faucette can already stand on his own and is working on walking again
Like Bennett Sr., Lawrence Faucette qualified for a pig heart because he was dying of heart failure. Ann Faucette said that after the surgery, her husband was able to play cards and do physical ...
Valve replacement surgery is the replacement of one or more of the heart valves with either an artificial heart valve or a bioprosthesis (homograft from human tissue or xenograft e.g. from pig). It is an alternative to valve repair .
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