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Multiple Choice
Individuals who have damaged or deteriorating heart valves commonly get heart valve replacement surgery. A biologic or tissue valve replacement surgery commonly replaces the patient’s damaged heart valves with pig heart valves. This surgery is an example of what type of tissue graft?
A
Isograft.
B
Allograft.
C
Autograft.
D
Xenograft.
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Verified step by step guidance
1
Understand the definitions of different types of tissue grafts: An autograft is a graft taken from one part of the patient's body and transplanted to another part of the same patient.
An isograft is a graft between genetically identical individuals, such as identical twins.
An allograft is a graft between two genetically different individuals of the same species.
A xenograft is a graft taken from a different species and transplanted into a human.
Since the problem states that pig heart valves (from a different species) are used to replace human heart valves, this type of graft is classified as a xenograft.