Use of the percutaneous left ventricular assist device in patients with severe refractory cardiogenic shock as a bridge to long-term left ventricular assist device implantation

The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation
Gary M IdelchikBiswajit Kar

Abstract

For patients with persistent cardiogenic shock refractory to intraaortic balloon pump (IABP) support, there are only limited means of resuscitation and bridging to surgical left ventricular assist device (LVAD) implantation. Extracorporeal membrane oxygenation and emergency surgical approaches have been attempted but are associated with significant morbidity and mortality. We evaluated the efficacy of a percutaneous left ventricular assist device (PVAD) as a bridge to LVAD implantation in patients in cardiogenic shock refractory to IABP and pressor support. Between May 2003 and April 2006, at our institution, 18 patients in severe refractory cardiogenic shock received a PVAD as a bridge to LVAD placement or orthotopic heart transplantation. Six patients had ischemic cardiomyopathy, and 12 had nonischemic cardiomyopathy. At the time of PVAD placement, 17 were receiving IABP support, and 10 were undergoing cardiopulmonary resuscitation. The mean duration of PVAD support was 4.2 +/- 2.5 days. During this time, the cardiac index improved from 0.86 +/- 0.66 to 2.50 +/- 0.93 liters/min/m2 (p < 0.001), systolic blood pressure improved from 72 +/- 11 to 98 +/- 15 mm Hg (p = 0.001), and systemic mixed venous oxygenation improved from 37...Continue Reading

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