Ventricular tachycardia during follow-up in patients resuscitated from ventricular fibrillation: experience from stored electrograms of implantable cardioverter-defibrillators
Rudolf Rüppel, MDa,
Catarina A. Schlüter, MDa,
Sigrid Boczor, MD*,
Thomas Meinertz, MDa,
Michael Schlüter, PhD*,
Karl-Heinz Kuck, MD, FACC* and
Riccardo Cappato, MD*
a University Hospital Eppendorf, Hamburg, Germany
* Saint Georg Hospital, Hamburg, Germany

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Figure 1 Intracardiac electrograms retrieved during follow-up from one patient developing monomorphic VT. Shown are the stored intracardiac recordings of the 10 s preceding arrhythmia detection (top panel), the 10 s preceding therapy delivery (middle panel) and the 10 s following therapy delivery (lower panel). (Top panel) During one episode of atrial fibrillation, a ventricular extrabeat induces a regular VT with a heart rate of 225 beats/min. (Middle panel) Ongoing VT. (Lower panel) After shock delivery, atrial fibrillation is observed.
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Figure 2 Distribution of VT cycle lengths recorded by ICD-stored electrograms during follow-up.
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