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The Weber test is administered by holding a vibrating tuning fork on top of the patient's head. The Weber test is a screening test for hearing performed with a tuning fork. [1] [2] It can detect unilateral (one-sided) conductive hearing loss (middle ear hearing loss) and unilateral sensorineural hearing loss (inner ear hearing loss). [3]
For basic screening, a conductive hearing loss can be identified using the Rinne test with a 256 Hz tuning fork. The Rinne test , in which a patient is asked to say whether a vibrating tuning fork is heard more loudly adjacent to the ear canal (air conduction) or touching the bone behind the ear (bone conduction), is negative indicating that ...
Air conduction should be greater than bone conduction, so the patient should be able to hear the tuning fork next to the pinna (outer ear) after they can no longer hear it when held against the mastoid. This normal result is paradoxically called a positive Rinne test (as a positive medical test usually indicates an abnormality).
In evaluating hearing loss, tympanometry permits a distinction between sensorineural and conductive hearing loss, when evaluation is not apparent via Weber and Rinne testing. Furthermore, in a primary care setting, tympanometry can be helpful in making the diagnosis of otitis media by demonstrating the presence of fluid build up in the middle ...
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Weber electrodynamics, on the other hand, does not define a magnetic field or a Lorentz force, but interprets the force of a current on a test charge by postulating that a current-carrying conductor contains negative and positive point charges that move at slightly different relative velocities with respect to the test charge. This in turn ...
The flu is ramping up after a slow start to the season. Positive tests rose 12% for the week ending Dec. 21, compared to the week prior, according to data released Friday by the Centers for ...
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