Atrial diastolic friction.
A typical triphasic pericardial rub was heard in a patient with acute myocardial infarction. Phonocardiograms during atrioventricular block demonstrated a fourth rub component in atrial diastole following every sufficiently isolated P wave.
D000368:Aged; D004562:Electrocardiography; D006325:Heart Atria / Q000503:physiopathology*; D006326:Heart Auscultation; D006327:Heart Block; D006329:Heart Conduction System / Q000503:physiopathology*; D006347:Heart Sounds; D006801:Humans; D008297:Male; D009200:Myocardial Contraction; D010493:Pericarditis / Q000175:diagnosis*