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[Round window membrane defect in divers].
Laryngo- Rhino- Otologie 1999 April
BACKGROUND: The rupture of the round window membrane is a special form of traumatic inner ear deafness. Because of the changing pressure levels, divers are at risk of developing such a membrane rupture, especially if tube function is disturbed. As the popularity of diving as a sport increases, ENT specialists have to deal with diving related problems increasingly frequently.
PATIENTS AND METHODS: Seven cases of divers are presented in whom a tympanotomy was performed following the diagnosis of a rupture of the round window membrane. The symptoms and intraoperative findings are discussed and the otologic and diving literature is reviewed. Following a case report, the pathophysiology, clinical symptoms and differential diagnosis of round window ruptures are discussed controversially. Possible therapeutical consequences are described.
RESULTS: None of our patients exhibited the classical triad of deafness, tinnitus, and vertigo as described in the diving literature. The leading symptom in our patients was the loss of hearing; only two patients had vertigo. Tinnitus was found in half of the patients. Intraoperative a rupture of the round window membrane was presumed in five divers.
CONCLUSIONS: If disturbance of inner ear function does occur concurrently with diving, a rupture of the round window membrane must be considered. An otologic examination must be performed in any diver with a loss of hearing and/or signs of a barotrauma of the middle ear. After differential diagnosis to exclude other possibilities, a tympanotomy to cover the round window membrane should be performed if symptoms persist more than 24 hours.
PATIENTS AND METHODS: Seven cases of divers are presented in whom a tympanotomy was performed following the diagnosis of a rupture of the round window membrane. The symptoms and intraoperative findings are discussed and the otologic and diving literature is reviewed. Following a case report, the pathophysiology, clinical symptoms and differential diagnosis of round window ruptures are discussed controversially. Possible therapeutical consequences are described.
RESULTS: None of our patients exhibited the classical triad of deafness, tinnitus, and vertigo as described in the diving literature. The leading symptom in our patients was the loss of hearing; only two patients had vertigo. Tinnitus was found in half of the patients. Intraoperative a rupture of the round window membrane was presumed in five divers.
CONCLUSIONS: If disturbance of inner ear function does occur concurrently with diving, a rupture of the round window membrane must be considered. An otologic examination must be performed in any diver with a loss of hearing and/or signs of a barotrauma of the middle ear. After differential diagnosis to exclude other possibilities, a tympanotomy to cover the round window membrane should be performed if symptoms persist more than 24 hours.
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