The<unk> , also pericardial<unk> , is a sign on the precordial exam, detected by auscultation, that suggests irritation of the pericardium and the diagnosis of pericarditis. Inflammation of the pericardial sac causes the parietal and visceral surfaces of the roughened pericardium to<unk>  against each other. This produces an extra cardiac sound of to-and-fro character with both systolic and diastolic components. One, two, or three components of a<unk>  may be audible. A three-component<unk>  indicates the presence of pericarditis and serves to distinguish a pericardial<unk>  from a pleural<unk> <unk> , which ordinarily has two components. It resembles the sound of squeaky leather and is often described as grating, scratching, or rasping. The sound is often loud and may even mask the other heart sounds.<unk> <unk> s are usually best heard between the apex and sternum but may be widespread. The sound has three parts: two diastolic, and one systolic, more specifically: atrial systole, rapid-filling phase of the ventricle and ventricular systole. A one-component<unk> , usually during ventricular systole, is suggestive of myopericarditis following transmural myocardial infarction.
Pericardial friction rub
Pulsus alternans
Pulsus paradoxus
Binaural beats
Pulsus bigeminus
Pulsus parvus et tardus
Pericardial calcification
Paradoxical septal motion