Paroxysmal atrial tachycardia with exit block.
D000368:Aged; D001282:Atrial Flutter / Q000175:diagnosis*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria; D006327:Heart Block / Q000150:complications*; D006801:Humans; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis*