Abstract
In cases where a cardiac assist device becomes urgerntly necessary in the ICU, time loss occurs in setting up the extracorporeal circulation by the air driving LVAD. We have experienced two long survived cases through an assist device using a Bio-pump after cardiac resuscitation in the ICU. And consequently, these were all with heparinization. This time, we developed an all nonthrombogenic circuit and centrifugal pump free heparinization. We have utilized this system for cardiogenic shock in 4 patients. At the post-used examination, clots were not seen in the suface of the these parts. This simple, effective system provides for patient support. The parts of non-pulsatile LVAD were separated by (1) centrifugal pump (Bio-Medicus), (2)flow meter, (3) percutanous arterial infusion cannula, (4) left atrial drainage cannula and (5) connecting tube. (1) and (2) were coated by Carmeda Bioactive surface and (4) and (5) were coated by Toray Co. (Japan) with heparin-coating.
