ECG_1 showing polymorphic ventricular tachycardia in ischemia

Continuous rhythm strip revealing several episodes of nonsustained ventricular tachycardia (VT) occurring during an acute ischemic event. The QRS complexes are variable in morphology and RR intervals; thus, the VT is polymorphic. The QT interval is normal. This form of VT should be distinguished from torsade de pointes in which polymorphic VT is associated with QT interval prolongation.