INTERMACS: interval analysis of registry data.

Background: The Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) is an NIH-sponsored registry of US FDA-approved mechanical circulatory support devices (MCSDs) used for destination therapy, bridge to transplantation (BTT), or recovery of the heart. INTERMACS data were analyzed through the most recent quarter ending March 31, 2008.

Study Design: INTERMACS variables include demographics, patient outcomes (survival and adverse events), hemodynamic data, and laboratory values.