Flow mediated dilation in patient with Berlin Heart Incor left ventricle assist device

Endothelial function measured with brachial ultrasound (BU) is a validated prognostic factor in heart failure patients. LVAD (left ventricle assist device) application is a promising surgical technique to treat refractory heart failure patients both as a bridge to heart transplantation or as destination therapy. Clinical recovery in such patients may be associated to normal endothelial function measured by BU but, as recently reported, only in pulsatile flow LVAD patients. The present paper report a case of normal endothelial function even in a axial LVAD patient.

Computational Fluid Dynamics Applied on an Autonomous Underwater Vehicle

The present paper report on a comparison between experimental obtained data for the drag force acting on a model prototype of the HUGIN 3000 and data obtained from a Computer Aided Analysis of the drag force carried out by CFD (Computational Fluid Dynamics). The HUGIN 3000 was developed in the nineties, by Kongsberg Maritime and FFI (Norwegian Defence Research Establishment). The experimental results in this paper, origins from a model test carried out by Marintek. The range of Reynolds number for both the experimental data and the computational results is 2.707×106 to 1.146×107. The agreement between the experimental data and the computed results is good. Particularly for the highest Reynolds numbers, the prediction of drag force by CFD seems to be remarkable good.