On-X® Life Technologies, Inc. (On-X LTI) announced today that it is highlighting two clinical studies completed during the first 15 years of the On-X Prosthetic Heart Valve implant experience at the European Association for Cardio-Thoracic Surgery meeting being held Lisbon, Portugal, on October 2-5, 2011. The reports consist of a a ten-year multiple center European study and a ten-year study of patients with poor anticoagulation control in South Africa. These studies in vastly diverse patient populations provide evidence of the continuing superior performance of the On-X Prosthetic Heart Valve.