Stroke with Continuous-Flow LVADs

Do Continuous Flow LVADS Improve Diastolic Dysfunction?

Background: Ventricular assist devices are now used as a bridge to recovery/decision/transplant or as destination therapy in end-stage heart failure. Continued improvements in technology and pump design have made implantation an easier process with reduced operative risks and pumprelated adverse events. Considering the beneficial effects of these devices in the clinical setting, it seemed logic...

Hemodynamic effects of various support modes of continuous flow LVADs on the cardiovascular system: A numerical study

BACKGROUND The aim of this study was to determine the hemodynamic effects of various support modes of continuous flow left ventricular assist devices (CF-LVADs) on the cardiovascular system using a numerical cardiovascular system model. MATERIAL AND METHODS Three support modes were selected for controlling the CF-LVAD: constant flow mode, constant speed mode, and constant pressure head mode o...

How LVADs Work

Left ventricular assist devices have become an established treatment for patients with advanced heart failure, as a bridge to transplantation or recovery, or as a long-term option for those who are not candidates for cardiac transplantation (destination therapy). Although studies have clearly shown that LVADs can signifi cantly improve quality of life for patients, there are substantial risks a...

A Mock Circulatory System to Assess the Performance of Continuous-Flow Left Ventricular Assist Devices (LVADs): Does Axial Flow Unload Better Than Centrifugal LVAD?

Hemodynamic performances comparisons between different types of left ventricular assist devices (LVADs) remain difficult in a clinical context. The aim of this study was to create an experimental model to assess and compare two types of LVAD under hemodynamic conditions that simulated physical effort and pulmonary hypertension. An experimental mock circulatory system was created to simulate the...

Furrow geometry nnder surge and continuous flow