Low doses of intravenous epinephrine for refractory sustained monomorphic ventricular tachycardia

Figure 6 A ventricular tachycardia of 140 beats/min from a 47-year-old man in arrhythmic storm with ischemic dilated cardiomyopathy and an implanted cardioverter-defibrillator (patient 3) was interrupted by Epinephrine (0. 5 mg over 30 s) after a small cycle length shortening. A: First ventricular tachycardia (VT) cycle of the patient in Figure 5; B: Last VT cycle before VT interruption. The two bold lines have the same length. A small VT cycle shortening before interruption is noted.