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Ablation to prevent recurrent flutter was performed. Only AFib was induced during EP study. These include not only induction of significant bradycardia ( albeit usually short-lived ) — but also both ventricular and supraventricular tachyarrhythmias. The subsequent EP study could not induce VT, only atrial fibrillation.
This ECG shows sinus bradycardia with massively long QT (or QU?) Especially when present in the setting of bradycardia and syncopal episodes, this is very worrisome for high risk of lethal dysrhythmias including polymorphic ventricular fibrillation (termed Torsades when in the setting of long QT). interval, at over 600 msec.
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