60
Participants
Start Date
August 31, 2011
Primary Completion Date
April 30, 2015
Study Completion Date
June 30, 2015
Standard Defibrillation Testing
Once the ICD is implanted, Standard Defibrillation Threshold (DFT) testing will begin. A low energy shock will be delivered to the heart at the peak of the T wave to induce ventricular fibrillation (VF). Once VF is induced, a rescue shock of 25J will be delivered to restore sinus rhythm. This process will be repeated once more after 5 minutes.
Upper Limit of Vulnerability Testing
Once the ICD is implanted, Upper Limit of Vulnerability (ULV) testing will commence. An 18 J shock will be delivered will at different points from the t-wave. If VF is not induced with any of these shocks, then the ULV will be considered to be 18J. If VF is induced, then a 25 J rescue shock will be delivered.
UCSD Sulpizio Cardiovascular Center, La Jolla
Collaborators (1)
Medtronic
INDUSTRY
University of California, San Diego
OTHER