Open AccessImplantable Cardioverter‐Defibrillator Shock: Appropriate or Inappropriate?
Author(s) -
Nault Michael A.,
McIntyre William F.,
Simpson Christopher S.,
Redfearn Damian P.,
Abdollah Hoshiar,
Brennan F. James,
Baranchuk Adrian
Publication year - 2010
Publication title -
annals of noninvasive electrocardiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.494
H-Index - 48
eISSN - 1542-474X
pISSN - 1082-720X
DOI - 10.1111/j.1542-474x.2010.00360.x
Subject(s) - medicine , implantable cardioverter defibrillator , ventricular fibrillation , troubleshooting , ventricular tachycardia , cardiology , shock (circulatory) , tachycardia , reliability engineering , engineering
A 76‐year‐old female with a single chamber implantable cardioverter‐defibrillator implanted for secondary prevention was referred due to multiple discharges. The device was programmed for ventricular tachycardia (VT) detection at 400 ms, fast VT detection at 280 ms, and ventricular fibrillation detection at 320 ms. Antitachycardia pacing (ATP) during charge was enabled. Interrogation revealed a VT episode with a mean cycle length of 270 ms, which was successfully terminated with ATP during charge. Seconds later, the device delivered a shock. This case illustrates the importance of understanding programming algorithms as part of troubleshooting when facing a scenario of device discharge. Ann Noninvasive Electrocardiol 2010;15(2):181–183