title: Progress versus precision: challenges in clinical trial design for left ventricular assist devices.
abstract: New left ventricular assist devices promise fewer adverse events but, currently, only minor improvements in survival. Small (survival) treatment effects, limited patient populations, and the increasing number of left ventricular assist devices in development challenge the efficient conduct of premarketing trials (especially in destination therapy) and, maybe more importantly, hamper innovation. Novel trial designs would facilitate this process. Among a range of trial designs, we opt for small randomized trials, which would preserve the advantages of randomization and also allow for a shorter enrollment period. We also advocate an evidence shift toward postmarketing studies, with the Interagency Registry of Mechanically Assisted Circulatory Support providing a robust infrastructure.
authors.affiliation: International Center for Health Outcomes and Innovation Research, Columbia University, New York, New York 10032, USA.
authors.forename: Michael K
authors.initials: MK
authors.lastname: Parides
authors.forename: Alan J
authors.initials: AJ
authors.lastname: Moskowitz
authors.forename: Deborah D
authors.initials: DD
authors.lastname: Ascheim
authors.forename: Eric A
authors.initials: EA
authors.lastname: Rose
authors.forename: Annetine C
authors.initials: AC
authors.lastname: Gelijns
mesh_terms: D015415:Biomarkers; D002986:Clinical Trials as Topic / Q000379:methods / Q000592:standards*; D035061:Control Groups; D018795:Device Approval / Q000592:standards*; D004867:Equipment Design; D005500:Follow-Up Studies; D006291:Health Policy; D016027:Heart Transplantation; D006353:Heart-Assist Devices / Q000592:standards; D006801:Humans; D007373:Interinstitutional Relations; D018579:Patient Selection; D011358:Product Surveillance, Postmarketing; D011788:Quality of Life; D018401:Sample Size; D016019:Survival Analysis; D014481:United States; D014486:United States Food and Drug Administration / Q000592:standards*; D018487:Ventricular Dysfunction, Left / Q000601:surgery
chemical_list: D015415:Biomarkers