Defibrillation threshold (DFT) testing is an integral part of implantable cardioverter-defibrillator
(ICD) placement and follow-up. Unfortunately, the DFT can vary widely from day to
day, influenced by many factors including electrolytes, sympathetic tone, antiarrhythmic
drugs, and other medications. For this reason, a 10-J safety margin between the lowest
successful defibrillation energy during testing and the maximal device output has
been widely adapted as standard practice.
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Article info
Publication history
Published online: March 07, 2006
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© 2006 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.