pericardial rub

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1. to move something over a surface with friction.
2. the action of such movement.
friction rub an auscultatory sound caused by the rubbing together of two serous surfaces, as in pericardial rub; called also rub.
pericardial rub (pericardial friction rub) a scraping or grating noise heard with the heart beat, usually a to-and-fro sound, associated with an inflamed pericardium. Patients often complain of pleuritic discomfort that radiates in the chest, especially during inhalation. This condition must be distinguished from angina pectoris.
pleural rub (pleuritic rub) a friction rub caused by friction between the visceral and costal pleurae.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

per·i·car·di·al fric·tion 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.
Farlex Partner Medical Dictionary © Farlex 2012

pericardial rub

The scratchy, leathery, or rasping sound heard when inflamed visceral and parietal surfaces move over each other. The sound may be heard when listening to the heart sounds of patients with pericarditis.
See also: rub
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
(4) Pericardial rubs may present transiently but it can persist in large effusions.
In the 2 cardiac complication patients, none of them had signs such as raised JVP, pulsus paradox, distended neck veins, signs of endocarditis, hepatomegaly, muffled heart sounds or pericardial rub which are suggestive of cardiac involvement.
His cardiovascular examination was normal with no murmurs or pericardial rubs. He had an elevated troponin I at 21.9ng/ml and an EKG ST segment elevation in the inferior leads (Figure 1).