Clinical Evaluation of an Automatic Physiologically Responsive Control System for Rotary Blood Pumps

Rotary blood pumps have become an important tool for the therapy of end stage cardiac failure. However, at the moment most of these pumps are still operated at constant speed and adjusted by the physician. Adaptation to physiological demand is therefore provided only by the remaining functionality of the left ventricle. A physiologically responsive control would not only be important for minimization of suction events and subsequent arrhythmic episodes, but also for better adaptation to exercise and eventually ventricular recovery. Therefore, an automatic control with integrated suction detection was developed and evaluated in a clinical study. Here, not only the results of this study but also the potential to optimize the pump efficiency with this strategy is presented.

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