Intervention Description Reduction in DFT
Reversal of Shock Polarity8 Can to Coil vs. Coil to Can 15-30%
Changing Shock Waveform9 Available with certain companies. 3-5 J
Medical therapy 10,11
Sotalol and Dofetilide decrease DFT.
~4-5J with Sotalol ~20% with Dofetilide*
SVC coil12,13 . Must be used at initial implant or requires lead replacement. 2-3 J
RV ICD lead revision13 Apical RV lead location may reduce DFT, RVOT with septal coil alternative NA
Addition of other coils 12,14,15 Azygous, coronary sinus, subcutaneous array/coil Insufficient data