Zur Problematik der Steuerung künstlicher Blutpumpen nach Totalersatz des Herzens – ein Beispiel von Fehlregulation

Abstract

This is a report on the special regulation problem of the left blood pump after replacement of the natural heart by incorporated extracorporally driven blood pumps in an animal experiment. The consequence of the peripheral self-regulation on the transporting capacity of the bloodpumps considering the driving pressure and the systemic pressure losses has been investigated. Two possible controlling principles and the respective fields of application are discussed on the example of a lung oedema.

Status of the artificial heart program in Berlin

“…The pressure pulse curve gives the necessary information for an optimal end-systolic and end-diastolic timing when the blood pump is completely emptied or filled. Because of the known difficulties in measuring the blood pressure invasively, we monitor the noninvasively measured air pressure in the driving chamber of the pump [12].…”