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Pericardial rubs

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pericardial rub --> pericardial friction sound

A to-and-fro grating, rasping, or, rarely, creaking sound heard over the heart in some cases of pericarditis, due to rubbing of the inflamed pericardial surfaces as the heart contracts and relaxes; during normal sinus rhythm it is usually triphasic; during any rhythm it may be biphasic or uniphasic.

Synonym: pericardial rub, pericardial friction rub.