Why do people with artificial heart valves have to take blood thinners?

Risk x clots. Artificial valves statistically are more prone to cause clots. Red blood cells crash against their hard surfaces triggering the cascade for clotting. This does not occur with bio prosthetic valves made of animals like pigs, or cadaver duramadre( meningeal layer).
Prevent blood clots. Since artificial heart valves is a foreign to the body substance they could stimulate formation of blood clots.

Related Questions

When heart valves are slightly affected during rheumatic fever, can it still pump enough blood and nutrients around the body?

Many do. After the primary infection has resolved, the patient may do well. Damage is variable but also can evolve over time. A person may function quite well for years but end up needing a valve or valves replaced at some point in the future. Regular follow up with a heart specialist should be expected. Read more...

How is an artificial heart valve inserted into the b body?

Surgery or Catheter. Traditionally, open heart surgery was the only way to replace heart valves. Techniques have now been developed to repair or replace some heart valves using catheters using less invasive methods (i.e. Closed chest procedures). Read more...
Open heart surgery . The surgeon, with anesthesia and adequate monitoring, will open your chest and use a machine that will oxygenate your body and pump it back to your body. Your heart will be resting while surgeon replace or repair your valve. The machine will act as your heart. At the end the heart will restart its function slowly and take over the pump function. Machine out and if valve work well we finish. Read more...

Who are the makers of the artificial heart valve?

Depends on the type. There are several "artificial" heart valves, each with different manufacturers. Here in the US - surgical mechanical valves - mostly St. Jude. surgical biologic valves - mostly Edwards Lifesciences. percutaneous (stented) valve - Edwards currently available in US, but other companies like Medtronic and St. Jude (and other small companies) have devices in trials or experimental phase. Read more...

What are the materials in an artificial heart valve?

Two basic types. While there are many, many prosthetic or artificial replacement heart valves there are two basic types: mechanical and biological. Of the latter there are porcine valves and those made from bovine pericardium. Additionally, preserved human aortic valves, also referred to as homografts, are used. Read more...
See below. The structure of the current st jude valve, the most commonly used valve, is made of graphite with a prolytic carbon coating. There is a sewing cuff which is a ring around the valve shich is made of synthetic fiber like polyester, or teflon, or dacron. Read more...

I am 87 and in extremely good health, take no medications. Have 2 leaky heart valves, left side. Heart pounding sound at night. Is Mitra clip for me?

Maybe. At your age treatment should be based upon improving quality of life. If you feel great and have no functional limitations doing surgery to "improve" your condition sounds like a tough sell. "No surgery" is always an option. Read more...