Evaluate mechanical and biological valves.
Give your opinion. Which one is better and why?

6 marks , please help me quickly

Types of Replacement Heart Valves:A tissue heart valve is made of biological tissue, usually from an animal, and can last about 10 to 20 years. While tissue valves are not as long-lasting as mechanical valves, they do not usually require long-term use of blood thinner medicines.Mechanical valves may last a lifetime, but they come with an increased risk of blood clots, necessitating the long-term use of blood thinners. Biologic valves made from pig or cow tissue typically don't cause clotting, but they wear out sooner, often requiring patients to undergo another surgery.