Key result
Benchtop experiments in a pulsatile flow loop substantiated that a new long-body bileaflet mechanical heart valve achieved higher net forward flow with minimal energy loss and reduced regurgitant volume.
A novel long-body bileaflet mechanical heart valve demonstrates improved hydrodynamic efficiency in simulated physiologic benchtop testing.
Supports further preclinical testing of long-body bileaflet valves; leaves open translation of hydrodynamic gains to clinical outcomes.
A new bileaflet substitute mechanical heart valve (MHV) that incorporates an optimal length-to-annulus ratio for improved hydrodynamic efficiency was recently introduced. Efforts have been made on this new prosthesis to use the current advances in carbon materials and design technology to achieve higher net forward flow with minimal energy loss for the smaller aortic valves, while reducing regurgitant closure volume for the larger size valves by an elongated orifice. Benchtop experiments performed in a pulsatile flow loop, under simulated physiologic conditions, substantiated these improvements as claimed. ASAIO Journal 1997; 43:M396-M401.
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Gao et al. (1997) studied this question. Long-Body Bileaflet Mechanical Heart Valve was evaluated on Hydrodynamic efficiency (net forward flow, energy loss, regurgitant closure volume). Benchtop experiments in a pulsatile flow loop substantiated that a new long-body bileaflet mechanical heart valve achieved higher net forward flow with minimal energy loss and reduced regurgitant volume.
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