MANAGEMENT TO INCREASE PUMP FLOW OF LVAD

概要

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In our clinical 11 cases of LVAD, the relationship between pump flow and mechanical driving mode, hemodynamic factor was studied retrospectively. And the managment to increase pump flow was considered. To obtain satisfactory pump flow (≥2.2l/min), positive pressure was rised to 200-250mmHg and negative pressure, 20-40mmHg, and S/D ratio, duration time were operated in 30-40%, in 200-250msec. As evaluation of hemodynamics, high CVP and SVR had tend to decrease pump flow, in contrast, high PCWP had tend to increase pump flow. In order to increase pump flow of LVAD, mechanical driving mode was thought to be have to set as above described mode, and vasodilator administration, volume loading, and prevention & treatment of right ventricular failure (catecholamine, RVAD, etc.) was necessary.