Ventricular Tachycardia Torsade de Pointes | Reference Guide.

EKG Features

Rate: Fast (200-250 bpm)
Rhythm: Irregular
P Wave: Absent
PR Interval: Not measurable
QRS: Wide (>0.10 sec), bizarre looking

Torsade de pointes ventricular tachycardia is a particular type of polymorphic VT. An ECG characterizes it by the QRS complexes twisting around the isoelectric line. See the pages on ventricular tachycardia, monomorphic VT and polymorphic VT for related information.
External Source: http://www.nlm.nih.gov/medlineplus/ency/article/000187.htm
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