Which of the following is not true about Torsades de pointes?

Which of the following is not true about
Torsades de pointes?
a) Presence of prolonged QT interval on ECG
b) Presence of polymorphic QRS complexes
c) It is a type of supraventricular tachycardia
d) QRS complexes appear to rotate around the isoelectric
baseline of ECG
Correct Answer - C
Answer- C. It is a type of supraventricular tachycardia
The significance of the long QT syndrome is its association with the
development of a specific type of ventricular tachycardia called
Torsades de points or polymorphic ventricular tachycardia
A wide complex tachyarrythmia with QRS complexes of varying axis
and morphology that appear to rotate around the iso electric
baseline.