Noninvasive control of cardiac output for alternately ejecting dual-pusherplate pumps.
Noninvasive control of cardiac output for alternately ejecting dual-pusherplate pumps.
复制标题
对交替喷射双推板泵的心输出量进行无创控制。
DOI：
10.1111/j.1525-1594.1992.tb00292.x
复制
发表时间：
1992
影响因子：
2.4
通讯作者：
Pierce,WS
中科院分区：
文献类型：
--
作者：
Snyder,AJ;Rosenberg,G;Pierce,WS
人工心脏应该以非侵入性的方式进行控制；控制系统的存在应该不会对患者构成风险。理想情况下，大部分控制功能是被动实现的，通过设计泵和能量转换器，使它们能够以适当的方式对循环中的变化做出反应。我们提出了一类植入了能量转换器的全人工心脏，既能控制左右输出平衡，又能对不断变化的血流需求做出反应。我们的平衡控制积极地保持左右平衡，但这样做与泵对灌装压力变化的自然反应一致。心输出量(CO)可以使其对右房压力敏感，但外周阻力是我们通常的线索。讨论了确定正确心输出量的替代方法。
An artificial heart should be controlled in a non‐invasive fashion; the presence of the control system should pose no risk to the patient. Ideally, much of the control function would be attained passively, by designing the pumps and energy converter so that they naturally respond in an appropriate manner to changes in the circulation. We present methods of controlling both left‐right output balance and providing response to changing demands for blood flow for a class of total artificial hearts with implanted energy converters. Our balance control actively maintains left‐right balance, but does so in concert with the natural response of the pumps to changes in filling pressures. Cardiac output (CO) can be made to be sensitive to right atrial pressure, but peripheral resistance is our usual cue. Alternative means of determining the correct cardiac output are discussed.