Dynamic Left Ventricular Assist Device Inflow Obstruction

Dynamic left ventricular assist device inflow obstruction.

A 72-year-old man with a history of rheumatic heart disease , prior bioprosthetic mitral and aortic valve replacement , severe nonischemic dilated cardiomyopathy (left ventricular [LV] ejection fraction 5%), and a history of ven-tricular tachycardia (VT) underwent implantation of a continuous flow LV assist device (LVAD; HeartMate II; Thoratec Corporation) as destination therapy for severe hear...

Improvement of Left Ventricular Assist Device (LVAD) in Artificial Heart Using Particle Swarm Optimization

In this approach, the Left ventricular assist pump for patients with left ventricular failure isused. The failure of the left ventricle is the most common heart disease during these days. Inthis article, a State feedback controller method is used to optimize the efficiency of a samplingpump current. Particle Swarm Algorithm, which is a set of rules to update the position andvelocity, is applied...

Design an Equivalent Left Ventricular Assist Device for Medical Equipment Labs

LVAD is a mechanical pump supporting a weak heart function and blood flow. Sometimes, the heart may not recover fast enough to take over the pumping action immediately after surgery, in such patients a temporary support device has been employed to maintain the pumping action until the patient’s own heart recovers. This device can be considered as a temporary alternative before the process of ar...

Ventricular arrhythmias after left ventricular assist device.

VADoscopy: a novel intraoperative technique to evaluate HeartMate II left ventricular assist device inflow obstruction and thrombosis.

With HeartMate II (HMII) implants increasing so has the frequency of device exchange. However, identifying inflow cannula obstruction, pump thrombosis, or outflow obstruction as the mechanism of pump dysfunction can be difficult. Echocardiography, CT angiogram, and cardiac catheterization are not definitive in determining the location of pump failure. Therefore, intraoperative examination is of...