friction rub

rub (rub)

1. to move something over a surface with friction.

2. the action of such movement.

3. friction rub

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friction rub  an auscultatory sound caused by the rubbing together of two serous surfaces, as in pericardial rub.

pericardial rub , pericardial friction rub a scraping or grating friction rub heard with the heart beat, usually a to-and-fro sound, associated with pericarditis or other pathological condition of the pericardium.

pleural rub , pleuritic rub a friction rub caused by friction between the visceral and costal pleurae.

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friction rub,

a dry, grating sound heard with a stethoscope during auscultation. It is a normal finding when heard over the liver and splenic areas. A friction rub auscultated over the pericardial area is suggestive of pericarditis; a rub over the pleural area may be a sign of lung disease.

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friction

the act of rubbing.

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friction coefficient

see friction coefficient.

friction injury

caused most commonly by automobile trauma in dogs and cats in which the animal has been dragged along the road or pavement, causing avulsion of tissue, from skin through to ligaments, tendons, muscles and bone. See also friction burn.

friction rub

sound heard on auscultation caused by rubbing together of two inflamed surfaces, e.g. pleuritic friction rub. See also pleural friction rub.

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friction rub

Cardiology A scratchy triphasic–occasionally, biphasic or monophasic sound extending over the entire precordium, best heard along the left midsternum with the Pt leaning forward, which changes in quality with inspiration and positional changes; FR is pathognomonic for pericarditis and must be differentiated from to-and-fro or machinery-like murmurs and 'crunching' sounds of emphysema; the 3 phases of the triphasic rub are due to pericardial-epicardial contact during ventricular systole, diastole, and atrial systole