title: Atrial tachysystole with block.
mesh_terms: D000293:Adolescent; D000328:Adult; D001281:Atrial Fibrillation / Q000175:diagnosis; D001282:Atrial Flutter / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis*; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis