Tissue Heart Valves

Tissue heart valves are made of human or animal (usually porcine, bovine) tissue.
typesSome tissue valves are mounted on a frame or stent; while others are used directly (stentless).
advantageUsually they do not require long-term blood thinner therapy. However, approximately one-third of patients with a tissue valve do not benefit from this, because they have a blood thinner requirement for other heart or vascular conditions.
disadvantageThe primary disadvantage of tissue valves is their tendency to wear out and require replacement, especially in patients less than 65 years old.
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