A case of frequent and inappropriate shock with a subcutaneous implantable cardioverter-defibrillator triggered by newly developed complete right bundle branch block

The subcutaneous implantable cardioverter-defibrillator should be reserved for niche indications

“…Similarly, conduction system abnormalities can prolong the QRS complex and lead to double counting. 12 In rare cases, atrial hypertrophy has also led to large p waves being miscounted. 13 Common issues with S-ICD sensing are shown in Figure 1 .…”