Read our VAD informational slipsheet.
What is a left ventricular assist device (LVAD)?

An LVAD is a mechanical pump-type device surgically implanted in patients whose heart continues to fail. This device simulates the work of the left ventricle--the large, muscular chamber of the heart that pumps blood out of the body--to help maintain the pumping ability of a heart that can't effectively function on its own.

Sometimes an LVAD is referred to as a "bridge to transplant" because it can sustain a patient's weakened heart while waiting for transplantation. Typically, LVADs are used for weeks to months prior to a heart transplant.

How does an LVAD work?

Typically, an LVAD has two tubes connected to an electric pump, an electronic controller and an energy supply. One tube goes into the left ventricle, pulling blood from the ventricle into the pump. The pump then sends blood into the aorta, the large blood vessel leaving the ventricle, effectively "bypassing" the weakened ventricle.

The pump is placed in the upper part of the abdomen. Another tube attached to the pump is brought out of the wall of the abdomen to the outside of the body and attached to the control system for the pump.

What is the HeartMate® LVAS?

The HeartMate Left Ventricular Assist System (LVAS) is a commonly used device implanted in patients awaiting a donor heart.

In November 2002, the FDA approved the HeartMate LVAS as a long-term permanent implant for patients with end-stage heart failure who are not heart transplant candidates.

What is a biventricular assist device (BIVAD)?

The right ventricle or pumping chamber of the heart can be simulated through the use of a biventricular assist device (BIVAD). This device works similarly to an LVAD, but connects the right ventricle to the pulmonary artery.