Commonly referred to as an LVAD
Developed in 1960s as bridge to cardiac transplant
LVAD <unk>  ventricle), RVAD (right ventricle), BiVAD (both venticles via separate pumps)
VADs have 3 major variables:
LVAD <unk>  ventricle), RVAD (right ventricle), BiVAD (both venticles via separate pumps)
Other parameters:
Decreased index, may indicate low preload
Increased index, may indicate volume overload
Pump speed and pulsatility index are inversely related
Left ventricular assist device complications
Bleeding - most common reason for ED visit, most common in first month after implant 
Heart transplant complications
GI bleeding is the most common source 
Aortic endograft complications
Mechanisms:
Cardiac ablation complications
Acquired Von Willebrand Disease 