durability: A comparison between Hancock standard and Hancock II bioprostheses.
Examination of the extracted bioprosthetic valve revealed devitalized porcine valve
with rare mononuclear cells on the surface of the leaflets (Figure 1, A and B).
In several studies, by 15 years the porcine valve
has failed in 30 percent to 60 percent of patients.
The study, which appears in the October issue of the cardiac journal The Annals of Thoracic Surgery, evaluated the 20-year durability of the Biocor porcine valve
in the aortic position.
The type III tear was an oval perforation at the center of one cusp of a Carpentier-Edwards porcine valve
, measuring 0.
We are extremely pleased with these early results--in frail, high-surgical-risk patients aged 79 and 86-- using our own design of a porcine valve
and delivered by a much smaller catheter that dramatically reduced the ReValving procedure time," said Jacques Seguin, M.
Tissue engineering of heart valves--Human endothelial cell seeding of detergent acellularised porcine valves
Second-generation pericardial valves are more durable than traditional porcine valves
as aortic valve replacements, said Guangqiang Gao, M.
Mechanical valves appear to be superior to porcine valves
in patients undergoing mitral or aortic valve replacement, according to Dr.
are easily available, and not in fixed supply, as are human blood or human donor organs.
Medtronic anticipates that development of Arbor's technology will enable future pericardial valves to achieve similar industry-leading patient survival outcomes as has been achieved with the highly successful Hancock II([R]) and third-generation Mosaic([R]) and Freestyle([R]) porcine valves
The committee also concluded that current-generation porcine valves
have the same durability as pericardial tissue valves.