Measurement of blood flow from an assist ventricle by computation of pneumatic driving parameters.
The measurement of blood flow from an assist ventricle is important but sometimes difficult in artificial heart experiments. Along with the development of a pneumatic cylinder-piston driver coupled with a ventricular assist device, a simplified method for measuring pump flow was established. From driving parameters such as the piston (or cylinder) displacement and air pressure, the pump flow could be calculated by the use of the equation of state for an ideal gas. The results of this method are broadly in agreement with electromagnetic and Doppler measurements.
Qian
K X
KX
Shanghai Second Medical University, China.
D001783:Blood Flow Velocity; D055590:Electromagnetic Phenomena / Q000592:standards; D005069:Evaluation Studies as Topic; D006353:Heart-Assist Devices; D006801:Humans; D008433:Mathematics; D008955:Models, Cardiovascular; D012212:Rheology / Q000592:standards; D013318:Stroke Volume; D014465:Ultrasonics