Atrial tachycardia with high degree of intra-atrial block.
D000368:Aged; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology*; D006327:Heart Block / Q000150:complications*; D006329:Heart Conduction System / Q000473:pathology; D006801:Humans; D008297:Male; D012595:Scleroderma, Systemic / Q000175:diagnosis; D013610:Tachycardia / Q000150:complications*