Acute low tone sensorineural hearing loss caused by inner ear barotrauma.

ABE TAKASHI, SASAMORI SHIRO, OIKAWA TAKASHI, AIGAMI TERUAKI, ENDO YOSHIHIKO, MATSUKI CHIKAKO

doi:10.3950/jibiinkoka.92.1381

Three cases of inner ear barotrauma with subjective symptoms and hearing impairment which were similar to the low tone sudden deafness were reported. Case 1 was a 34-year-old man who developed a hearing loss in the next morning of taking an airplane and recovered four days after. Case 2 was a 42-year-old man who developed a hearing loss 2 days after flying in an airplane and hearing loss have recurred 4 times in his right ear for 3 months. Eight months after recovery of previous recurrent attack, a hearing loss ocurred in his left ear without flying and recurred twice for 3 weeks. Case 3 was a 25-year-old woman who developed a hearing loss in the right ear after 24 meter depth scuba diving and recurred 4 times for 40 days.<br> Those three patients complained of no vertigo at any attacks and were treated conservatively.<br>. From previous reports and the onset and the course of hearing disturbance, acute low tone sensorineural hearing loss in case 1 and case 2 was thought to be caused by circulatory disturbance of the inner ear and in case 3 thought to be caused by inner ear window rupture. But, endolymphatic hydrops was also needed to be take into account in those three cases as a common possible cause.<br> Inner ear barotrauma and so called labyrinthine window rupture were considered to be one of the diseases needed to differentiate from low tone sudden deafness without reference to mono-attack type or recurrent type.

Acute low tone sensorineural hearing loss caused by inner ear barotrauma.

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