Pulsatile flow past St. Jude Medical bileaflet valve

Regurgitant flow field characteristics of the St. Jude bileaflet mechanical heart valve under physiologic pulsatile flow using particle image velocimetry.

The regurgitant flow fields of clinically used mechanical heart valves have been traditionally studied in vitro using flow visualization, ultrasound techniques, and laser Doppler velocimetry under steady and pulsatile flow. Detailed investigation of the forward and regurgitant flow fields of these valves can elucidate a valve's propensity for blood element damage, thrombus formation, or cavitat...

Elliptic st. jude bileaflet mechanical heart valves

St. Jude Medical (SJM) bileaflet mechanical valves were approved by the Food and Drug Administration in 1977. The SJM valve design consists of two semicircular leaflets which pivot on hinges. Compared to other mechanical heart valve prostheses such as ball and cage and tilting disk prosthetic valves, it provides good central flow, the leaflets open completely, and the pressure drop across the v...

Thrombogenic performance of a st. Jude bileaflet mechanical heart valve in a sheep model.

The sheep model is preferred for chronic evaluation of prosthetic heart valves, surgical techniques, and endocardiographic studies. A bileaflet mechanical heart valve (MHV) was implanted into a sheep model to study its in vivo performance and to evaluate the thrombogenic potential of the valve. Transesophageal echocardiography and transcranial Doppler ultrasonography measurements were conducted...

Long-term outcomes after St. Jude Medical mechanical valve implantation.

patient-year), major bleeding events (1.0%/patient-year), and aortic valve reoperation (0.26%/patient-year). They also reported that valve-related death was the most common cause of death (26.8%) and that the rates of freedom from valve-related death were 96.2%, 92.7%, 88.8%, and 86.6% at 5, 10, 15, and 20 years, respectively. These results compare favorably with the findings of previous report...

Hemodynamic Flow Characterization of St. Jude Medical Bileaflet Mechanical and Bioprosthetic Heart Valve Prostheses in a Left Ventricular Model via Digital Particle Image Velocimetry