for people ages 18 years and up (full criteria)
at San Diego, California and other locations
study started
estimated completion:



The purpose of this multicenter post-approval study is to evaluate the acute and chronic performance of the QuickFlex® μ 1258T left ventricular lead.

Official Title

QuickFlex® μ Model 1258T Left Heart Pacing Lead Post Approval Study


The endpoints of the study are:

  • Complication free survival rate at 5 years for complications related to the LV lead
  • Electrical performance (capture threshold) of St. Jude Medical's QuickFlex®µ 1258T LV Lead


Heart Failure Left heart pacing lead Cardiac resynchronization therapy (CRT) Menthol Implantation of a QuickFlex® μ Model 1258T LV Lead


You can join if…

Open to people ages 18 years and up

  • Have an approved indication per ACC/AHA/HRS guidelines for implantation of a CRT-D system or participated in the QuickFlex® μ1258T IDE study
  • Have the ability to provide informed consent for study participation and be willing and able to comply with the prescribed follow-up tests and schedule of evaluations

You CAN'T join if...

  • Have a hypersensitivity to a single 1.0mg dose of dexamethasone sodium phosphate or short term contact with heparin
  • Have a life expectancy of less than 5 years due to any condition
  • Be less than 18 years of age


  • University of California at San Diego (UCSD) Medical Center
    San Diego California 92118 United States
  • Los Angeles Biomedical Research Institute at Harbor-UCLA
    Torrance California 90502 United States
  • Glendale Memorial Hospital and Medical Center
    Glendale California 91206 United States
  • Kaiser Permanente Los Angeles Medical Center
    Los Angeles California 90027 United States
  • Claudio Bonometti MD, Inc
    Santa Barbara California 93105 United States


in progress, not accepting new patients
Start Date
Completion Date
St. Jude Medical
Study Type
Last Updated
July 2016