Open AccessParadoxical pacing spikes during a wide complex tachycardia in biventricular defibrillator. What is the mechanism? Is it undersensing due to troubleshooting?
Author(s) -
Leventopoulos Georgios,
Koufou EleniEvangelia,
Koros Rafail,
Perperis Angelos,
Davlouros Periklis
Publication year - 2022
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1002/joa3.12688
Subject(s) - troubleshooting , medicine , mechanism (biology) , cardiology , tachycardia , reliability engineering , engineering , philosophy , epistemology
We present the case of a 68‐year‐old man with a cardiac resynchronization therapy‐defibrillator Medtronic device implanted 3 years ago, admitted to our hospital due to a wide complex tachycardia with unexpected pacing spikes inside QRS complexes. Although that could be easily attributed to ventricular undersensing, more complicated mechanisms are involved, including the origin of the tachycardia, the parameters of the device, and the position of the device and the leads.