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. 2023 Jun 30;25(6):euad156. doi: 10.1093/europace/euad156

Figure 3.

Figure 3

Catecholaminergic polymorphic ventricular tachycardia phenotype. (A) Exercise treatment test of a 32-year-old female patient with RYR2-related CPVT. Inducible ventricular ectopy with monomorphic bigeminal PVCs at Stage 2 (4:22 min) and a heart rate of 134 b.p.m. (B) Same patient as (A): at Stage 3 (6:11 min), intermittent manifestation of bidirectional PVCs. (C) 67-year-old male with RYR2-related CPVT. Run of non-sustained polymorphic ventricular tachycardia at peak Stage 4 of an exercise treadmill test (11:00 min). (D) Shown are intermittent runs of non-sustained bidirectional ventricular tachycardia.