Intermittent high impedance from the lead-device compatibility problem

The reliability of an implantable cardioverter-defibrillator (ICD) system depends on the function of its components, including the pulse generator and ICD lead(s). The ICD lead is the critical interface linking a pulse generator to the myocardium and is used for delivery of short direct current electrical pulses including a high-energy pulse for lethal arrhythmia termination and a low-energy pulse for pacing. However, an ICD lead is the weakest link in all ICD systems. Lead failure rates range from 10% to 50% during long-term follow-up.

Source: Heart Rhythm - January 29, 2019 Category: Cardiology Authors: Tanyanan Tanawuttiwat, Ronald D. Berger, Charles J. Love Source Type: research