Prosthetic heart valve thrombosis is a rare but serious complication of a heart valve replacement procedure. The complication occurs when a blood clot called a thrombus is attached to or near a prosthetic heart valve. This can obstruct blood flow or interfere with the function of the valve. This condition can be life-threatening. Seek medical attention right away if you think you have prosthetic heart valve thrombosis.

Heart Valves With Prosthetic Replacements
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Prosthetic heart valve thrombosis is thought to result from an interaction between components of blood and the prosthesis or blood flow in and around the prosthesis.