Frumento C I, Auch W D, Frumento A S
Med Prog Technol. 1983;10(2):97-107.
Based upon the Utah pneumatic driver, a new model for use in animal experiments was designed. It enabled measurement of cardiac output, optimal percentage of systole as well as diagnosis of some of the causes of the decrease of cardiac output of the pneumatic total artificial heart, such as valvular stenosis due to pannus formation. This driver is based on the expansion of a known amount of 'driving-air' during the systolic period. In the calculation of the cardiac output, the in vitro experiments yielded an error range of +/- 3.5%. The analysis of the driving-air pressure tracing during its decompression (systolic period) gave accurate information about the optimal percentage of systole for each frequency and the inflow and outflow resistances.
基于犹他州气动驱动器，设计了一种用于动物实验的新模型。它能够测量心输出量、最佳收缩百分比，并诊断气动全人工心脏心输出量降低的一些原因，如因血管翳形成导致的瓣膜狭窄。该驱动器基于在收缩期已知量的“驱动空气”的膨胀。在心输出量的计算中，体外实验产生的误差范围为±3.5%。对驱动空气减压（收缩期）期间的压力曲线分析给出了每个频率下收缩期的最佳百分比以及流入和流出阻力的准确信息。
