Original Article: A Fully Magnetically-Levitated Circulatory Pump for Advanced Heart Failure (HM3™) In a randomized trial, 294 patients with advanced heart failure were assigned to either a magnetically levitated centrifugal-flow pump or an axial-flow pump. At 6 months, the rate of survival free of disabling stroke or reoperation to replace or remove the pump was significantly higher with the centrifugal-flow pump.This article is being presented today at the American Heart Association's Scientific Sessions 2016 in New Orleans.