A<unk> , also<unk> <unk> , is an audible medical sign used in the diagnosis of pericarditis. Upon auscultation, this sign is an extra heart sound of to-and-fro character, typically with three components, two systolic and one diastolic. It resembles the sound of squeaky leather and often is described as grating, scratching, or rasping. The sound seems very close to the ear and may seem louder than or may even mask the other heart sounds. The sound usually is best heard between the apex and sternum but may be widespread.
Pericardial friction rub
Pulsus alternans
Pulsus paradoxus
Pulsus bigeminus
Hyperdynamic precordium
Heart click
Sail sign of the chest
Carey Coombs murmur