Key result
Cavitation intensity in mechanical heart valves increased with fluid viscosity and valve-closing velocity, while cavitation occurrence probability was higher in tap water due to nuclei concentration.
Population
Medtronic Hall mechanical heart valve mounted in the mitral position of an electrohydraulic total artificial…
Design
Preclinical
Authors
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Tap water may overestimate cavitation probability in mechanical valve tests; leaves open validation of blood-mimicking fluids for in vitro studies.
Cavitation intensity in mechanical heart valves is significantly affected by fluid viscosity and nuclei concentration, indicating that tap water is not an ideal substitute for blood in in vitro testing.
Lee et al. (2005) studied Mechanical heart valve cavitation. Testing fluids (tap water, distilled water, glycerin solution) was evaluated on Cavitation intensity and occurrence probability. Cavitation intensity in mechanical heart valves increased with fluid viscosity and valve-closing velocity, while cavitation occurrence probability was higher in tap water due to nuclei concentration.
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