RT Journal Article SR Electronic A1 Rizzo, Toni T1 Omecamtiv Mecarbil: Phase 2 Study Shows No Improvement in Dyspnea AHF But Trend for Further Exploration JF MD Conference Express YR 2013 FD SAGE Publications VO 13 IS 15 SP 16 OP 17 DO 10.1177/155989771315011 UL http://mdc.sagepub.com/content/13/15/16.abstract AB The Study to Evaluate the Safety and Efficacy of IV Infusion Treatment With Omecamtiv Mecarbil in Subjects With Left Ventricular Systolic Dysfunction Hospitalized for Acute Heart Failure trial [ATOMIC-AHF; NCT01300013], was a Phase 2 dose ranging study which aimed to evaluate the safety, pharmacokinetics and pharmacodynamics, and efficacy of intravenous (IV) omecamtiv mecarbil (OM) in patients with acute heart failure (AHF). The investigators hypothesized that =1 dose of IV OM would be well tolerated and improve dyspnea in patients with left ventricular systolic dysfunction hospitalized for AHF.