title: ECG Response: January 12, 2016.
mesh_terms: D000368:Aged; D001282:Atrial Flutter / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D054537:Atrioventricular Block / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology; D004417:Dyspnea / Q000209:etiology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications; D013610:Tachycardia / Q000209:etiology