CPR can induce inappropriate shocks from an S-ICD due to oversensing of chest compression artifacts, which may not be inhibited by magnet placement.
Inappropriate S-ICD shocks from CPR artifact may occur despite magnet use; case report leaves open device-specific resuscitation protocols.
We present the case of a 30-year-old man with a subcutaneous implantable cardioverter defibrillator (S-ICD) who suffered sudden out-of-hospital cardiac arrest. During resuscitation, the patient received inappropriate shocks due to oversensing by the S-ICD of chest compression induced artifact. The rhythm on the EMS monitor showed asystole throughout the period of resuscitation. Placement of a magnet over the S-ICD generator failed to inhibit the delivery of S-ICD shocks. Information regarding inappropriate S-ICD shocks may be useful during resuscitation of patients with sudden cardiac arrest.
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Cmorej et al. (2019) studied this question.
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