ICD-unresponsive ventricular arrhythmias
2009; Elsevier BV; Volume: 6; Issue: 12 Linguagem: Inglês
10.1016/j.hrthm.2009.06.005
ISSN1556-3871
AutoresJosée Michaud, Irina Horduna, Marc Dubuc, Paul Khairy,
Tópico(s)Cardiac Arrhythmias and Treatments
ResumoA 29-year-old man with idiopathic dilated cardiomyopathy received a single-chamber transvenous implantable cardioverter-defibrillator (ICD; model Atlas II VR V-168, St. Jude Medical, Inc., Sylmar, CA, USA) for secondary prevention. A tripolar lead (Riata 7002-65, St. Jude Medical) was implanted, with a sensed R-wave amplitude >12.0 mV, pacing threshold 0.7 V at 0.5 ms, and pacing impedance 691 Ω. Two consecutive inductions of ventricular fibrillation (VF) were successfully terminated by 20-J shocks, with shock impedance of 48 Ω. The VF detection rate was programmed to ≥200 bpm, and a ventricular tachycardia zone was set to 180 to 200 bpm. Sensitivity was nominally programmed to 0.3 mV.
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