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. 2019 Jul 17;5(10):505–510. doi: 10.1016/j.hrcr.2019.07.005

Figure 2.

Figure 2

Patient 2. A: A 12-lead electrocardiogram showing very rapid regular tachycardia of 250 beats per minute (bpm) with typical right bundle branch block. B: Single-lead (lead II) rhythm strip showing regular supraventricular tachycardia at a rate of 250 bpm degenerating into polymorphic ventricular tachycardia (VT) of 12.5 seconds’ duration. The coupling interval of the first VT beat is 230 ms. This episode terminates spontaneously into sinus tachycardia. C: A 12-lead electrocardiogram post spontaneous reversion to sinus rhythm.