(September 2, 2015, 10:07 AM EDT) -- SILVER SPRING, Md. — The Food and Drug Administration on Aug. 5 warned health care providers about serious adverse events associated with left ventricular assist devices (LVADs), including the HeartMate II Left Ventricular Assist System made by Thoratec Corp. and the HeartWare Ventricular Assist System HVAD made by HeartWare Inc....