Mechanical valves and biologic valves each have their own advantages, disadvantages, and indications, and patients should choose the appropriate valve for their specific condition.
Mechanical valves are man-made valves that follow the frame, and their biggest advantage is that once replaced, they can be used for life without the need for surgery. However, because it is made of metal, patients need to take lifelong anticoagulant medication to prevent blood clots, and they may hear a mechanical ticking sound at night. Mechanical valves are more commonly used in patients under the age of 65.
Biologic valves, which are made from processed bovine or porcine valves, have the advantage that they can be anticoagulated for 3 to 6 months after surgery, eliminating the need for lifelong anticoagulation. However, compared to mechanical valves, biologic valves have a relatively short lifespan of about 10 to 15 years and are relatively expensive. Biologic valves are more commonly used in patients over 65 years of age.
Therefore, there is no such thing as a better mechanical valve or biologic valve, but rather one that is more appropriate for the patient’s current situation.