title: ECG Quiz: a tale of an abnormal ECG.
authors: Sahil
authors: S
authors: Koppikar
authors: Cathy
authors: C
authors: Shaw
authors: Adrian
authors: A
authors: Baranchuk
authors: Adrian
authors: A
authors: Baranchunk
mesh_terms: D000686:Amyloidosis / Q000175:diagnosis; D016477:Artifacts; D001281:Atrial Fibrillation / Q000175:diagnosis; D003914:Dextrocardia / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography / Q000379:methods*; D004868:Equipment Failure; D006801:Humans; D008297:Male; D008875:Middle Aged