Which statement is true regarding bioprosthetic heart valves?

The statement that bioprosthetic heart valves are often obtained from animals is accurate. Bioprosthetic valves are typically made from biological tissue and are most commonly sourced from pigs (porcine valves) or cows (bovine pericardial valves). This animal-derived material is treated and processed to reduce the risk of rejection and to create a functional valve that can replicate the role of native heart valves.

In contrast, lifetime anticoagulation therapy is usually associated with mechanical heart valves, not bioprosthetic ones, which typically require less stringent anticoagulation management post-surgery. Bioprosthetic valves can also be derived from human donors, though this is less common, and the statement that they are exclusively for children is incorrect, as they are used in patients of various ages depending on clinical indications and individual patient factors.