friction rub


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rub

 [rub]
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.

fric·tion sound

the sound heard on auscultation made by the rubbing of two opposed serous surfaces roughened by an inflammatory exudate, or, if chronic, by nonadhesive fibrosis.

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

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

fric·tion sound

(frik'shŭn sownd)
The sound, heard on auscultation, made by the rubbing of two opposed serous surfaces roughened by an inflammatory exudate, or, if chronic, by nonadhesive fibrosis.
Synonym(s): friction rub.

friction

the act of rubbing.

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.
References in periodicals archive ?
7) In our experience the majority of such patients either develop dcSSc during follow-up or have clinical features suggesting evolution to dcSSc such as rapid progression of skin thickening or palpable tendon friction rubs.
All vital signs were within normal limits, and no precordial murmurs, friction rubs, or thrills were present.
Occasionally in the diffuse variant, tendon friction rubs can be detected because of fibrin deposition.