Inhibition of ventricular output in a dual chamber pacemaker with normal pacing and sensing parameters: What is the mechanism?

A 65-year-old gentleman with dual chamber pacemaker presented with presyncope. The ECG raised concerns of oversensing which was confirmed by magnet response. The device interrogation revealed noise in ventricular channel temporally associated with P wave. The pacing thresholds were normal. Although...

Descripción completa

Detalles Bibliográficos
Autores principales: Bera, Debabrata, Joshi, Radhey Shyam, Majumder, Suchit, Mukherjee, Sanjeev S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
EP / Device Round
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8811278/
https://www.ncbi.nlm.nih.gov/pubmed/34492301
http://dx.doi.org/10.1016/j.ipej.2021.09.001
Descripción
Sumario:A 65-year-old gentleman with dual chamber pacemaker presented with presyncope. The ECG raised concerns of oversensing which was confirmed by magnet response. The device interrogation revealed noise in ventricular channel temporally associated with P wave. The pacing thresholds were normal. Although the ventricular lead impedance was within normal limit the impedance trend suggested 100 Ω decline over last 1 year. RV lead insulation failure was speculated and supported by the bipolar and unipolar intracardiac electrogram. Device was programmed to DOO temporarily. He underwent RV lead replacement uneventfully.

Ejemplares similares