Figure 2: Arrhythmia Incidence

(A) Representative electrogram recordings from Ctrl and MI/iAL preparations during normokalemia and hypokalemia. Arterially perfused wedges from MI/iAL animals but not Ctrl animals were prone to ventricular tachycardia/ventricular fibrillation (VT/VF) during challenge with rapid pacing under conditions of hypokalemia. (B) Incidence of VT/VF in Ctrl (n = 7), MI (n = 5), and MI/iAL (n = 7) hearts during hypokalemia. Abbreviations as in Figure 1.