Fig. 2.

Tele strips showing precipitation of episodes of Tdp (Panel A, B, C & D) during continuous telemonitoring with the classic features including a prolonged QT interval (Panel A), initiation of the arrhythmia after a short-long-short cycle sequence by a PVC that falls near the peak of the distorted T wave (Panel B & C), “warm-up” phenomenon with initial R–R cycles longer than subsequent cycles, and abrupt switching of QRS morphology from predominately positive to predominately negative complexes (Panel A & B).