The audible sounds of atrial tachyarrhythmia. (Flutter?).
D006328:Cardiac Catheterization; D004562:Electrocardiography; D006325:Heart Atria; D006326:Heart Auscultation; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D013610:Tachycardia / Q000175:diagnosis*