A Homozygous CASQ2 Mutation in a Japanese Patient with Catecholaminergic Polymorphic Ventricular Tachycardia

Figure 1

The 12 lead ECG in the patient. (a) The HR was 60bpm. Left axis deviation and enlarged U-waves were noted. An exercise test demonstrated polymorphic ventricular extrasystoles (b) which progressed to sustained polymorphic ventricular tachycardia (c).