PATHOLOGY MCQ
DISTURBANCES OF BLOOD FLOW
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
cow
|
|
pig
|
|
sheep
|
|
chimpanzee
|
Detailed explanation-1: -Bovine (cow) tissue is most commonly used, but some are made from porcine (pig) tissue. The tissue is treated to prevent rejection and calcification. Alternatives to animal tissue valves are sometimes used, where valves are used from human donors, as in aortic homografts and pulmonary autografts.
Detailed explanation-2: -Tissue valves are most commonly made from tissue taken from pigs although tissue from cows, horses or humans can also be used. A mechanical valve lasts longer than a tissue valve, but with this valve, you must take blood-thinning medication for the rest of your life in order to reduce the risk of clots.
Detailed explanation-3: -The Mosaic™ heart valve is one option for patients with aortic or mitral valve disease. The Mosaic heart valve is made from the heart valve of a pig (porcine). A pig’s heart valve anatomy is similar to that of a human heart. In order to implant the valve in the heart, the tissue is mounted on a flexible frame.