June 1, 1995Pacing and Clinical Electrophysiology
Sensing Failure in a Tiered Therapy Implantable Cardioverter Defibrillator: Role of Auto Adjustable Gain
Key result
An implantable cardioverter defibrillator failed to sense every other QRS complex during induced ventricular fibrillation due to marked electrical alternans, despite auto adjustable gain.
Population
1 patient with an implantable cardioverter defibrillator
Design
Case_report
Authors
Discussion
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Member takes
Implication
May cause ICD undersensing during VF with electrical alternans; leaves open need for sensing algorithm refinements.
Study Design
Type
Case Report (n=1)
Structured PICO
P
Population
One case report of a patient with an implantable cardioverter defibrillator experiencing sensing failure during induced ventricular fibrillation.
I
Intervention
Implantable cardioverter defibrillator with auto adjustable gain
O
Outcome
Sensing failure during induced ventricular fibrillationsafety
This case highlights that potentially fatal undersensing can occur in ICDs during ventricular fibrillation due to marked electrical alternans, despite the presence of auto adjustable gain.
Cite This Study
Wase et al. (1995) conducted a case report in Ventricular fibrillation (n=1). Implantable cardioverter defibrillator with auto adjustable gain was evaluated on Sensing failure. An implantable cardioverter defibrillator failed to sense every other QRS complex during induced ventricular fibrillation due to marked electrical alternans, despite auto adjustable gain.