title: Initial downward deflection in lead aVR in cyclic antidepressant poisoning-S or Q Wave?
authors: Hossein
authors: H
authors: Sanaei-Zadeh
mesh_terms: D000929:Antidepressive Agents, Tricyclic / Q000506:poisoning*; D001145:Arrhythmias, Cardiac / Q000139:chemically induced* / Q000175:diagnosis / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D011041:Poisoning / Q000503:physiopathology
chemical_list: D000929:Antidepressive Agents, Tricyclic