Figures
Figure 1. ECG taken during episode of cardiac arrest showing feature of Torsade de pointe: initiation of the arrhythmia after a short-long-short cycle sequence PVC that falls near the peak of the distorted T-wave, irregular RR interval, and abrupt switching of QRS morphology from predominately positive to predominately negative complexes (A). Note the change in polarity of QRS complex about the isoelectric line (B)