Inappropriate defibrillator shock due to oversensing. What is the mechanism?

Implantable cardioverter defibrillator (ICD) is often advised for secondary prevention of sudden cardiac death. Inappropriate shocks from ICD is uncommon but can seriously affect the quality of life. One of the reasons for inappropriate ICD shock is loose set screw, which may remain undetected by de...

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Detalles Bibliográficos
Autores principales: Bera, Debabrata, Saggu, Daljeet Kaur, Chandra Murthy, Goddu Sreeram, Yalagudri, Sachin, Sridevi, Chennapragada, Narasimhan, Calambur
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2020
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7854366/
https://www.ncbi.nlm.nih.gov/pubmed/32998013
http://dx.doi.org/10.1016/j.ipej.2020.09.005
Descripción
Sumario:Implantable cardioverter defibrillator (ICD) is often advised for secondary prevention of sudden cardiac death. Inappropriate shocks from ICD is uncommon but can seriously affect the quality of life. One of the reasons for inappropriate ICD shock is loose set screw, which may remain undetected by device interrogation and/or fluoroscopy. A 55-year lady presented with multiple inappropriate shocks few hours after an ICD implantation. The discrepancy between near field (NF, tip to ring) and far field (FF, Can to RV coil) signals helped us to suspect noise related to loose set screw, as the underlying problem. Re-exploration of the pocket had to be performed as the last resort to confirm the diagnosis and rectify the problem.

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