• Apr 26, 2026 the ehra book of pacemaker icd and crt troubleshoo f persistent noise. 3. Inappropriate Shocks in ICDs Causes: T-wave oversensing Lead dislodgement Electromagnetic interference (EMI) Troubleshooting Steps: Review stored episodes and EGMs. Check for lead problems. Educate patient about avoiding EMI sources. A By Dorothy Homenick
