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Original Article

Effect of Increased Middle Ear Pressure on Blood Flow to the Middle Ear, Inner Ear and Facial Nerve in Guinea Pigs

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Pages 439-442 | Received 22 Mar 1995, Accepted 11 Jul 1995, Published online: 08 Jul 2009
 

Abstract

We investigated the effect of increased middle ear pressure on blood flow to the inner ear, middle ear, and facial nerve in guinea pigs using a nonradioactive microsphere technique. the elevation of middle ear pressure significantly reduced blood flow to the middle ear. Blood flow to the facial nerve also decreased due to the elevation of the middle ear pressure but the reduction was not significant. Blood flow to the inner ear did not change even after the middle ear pressure was increased. Findings are discussed in relationship to aural barotrauma, alternobaric vertigo and facial baroparesis.

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