(A) Pre-hospital 12-lead electrocardiogram at 4:41 a.m. showing mild inferior ST elevation with lateral ST depression. (B) Emergency department 12-lead electrocardiography at 6:48 a.m. showing mild ST elevation in aVL and infero-posterior ST depression and T-wave inversion. (C) Repeat 12-lead electrocardiogram at 8:16 a.m. showing resolved ST elevation in aVL. (D) 12-lead electrocardiography performed 24 h post-admission showing new inferior Q waves.