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Ventricular tachycardia oversensing in S‐ICD patients: Case‐based brief review
Author(s) -
Zoppo Franco,
Mangiameli Daniele,
Perazza Luca,
Lardieri Gerardina
Publication year - 2020
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/pace.13871
Subject(s) - medicine , cardiology , implantable cardioverter defibrillator , amiodarone , ventricular tachycardia , ejection fraction , ventricular fibrillation , shock (circulatory) , atrial fibrillation , tachycardia , heart failure
A 76‐year‐old woman with permanent atrial fibrillation and a mechanical aortic valve came to our attention. Echocardiography showed a 50‐55% ejection fraction (EF) with good prosthesis performance. For symptomatic bradyarrhythmia, she received a VVI pacemaker (Proponent MRI L2010 model; Boston Scientific.). During follow‐up, frequent symptomatic (presyncopal) episodes of nonsustained episodes of ventricular tachycardia (VT) were detected. Amiodarone proved unsuccessful; she was then offered an upgrade to an implantable cardioverter defibrillator (ICD) and a subcutaneous ICD (S‐ICD) was chosen by the patient. A few weeks later, two sustained VT were detected and effectively treated with 80‐J shock delivery. In both cases, device interrogation revealed a VT rate around 163 bpm (370 ms cycle length), below the lowest device detection cutoff. The report is a case‐based review.