Clinical usefullness of bisected diastolic driving (BDD) to control concomitant use of LVAD and IABP

Abstract

New driving method for combined use of left ventricular assist device (LVAD) and IABP is reported with experimental evidence and clinical usefulness. The diastolic interval of failing heart is bisected, and LVAD ejects on early half of the diastole, and subsequently the balloon of IABP is inflated on the remained half. In this method, these two assist devices act during the diastole of the heart as a counterpulsation, resulted in best assist efficacy. Meanwhile, renal blood flow does not reduce during BDD experimentally and clinical improvement of renal dysfunction was obtained in 2 cases.