著者

澤田 政道 岡本 途也 真鍋 敏毅 井上 鉄三

出版者

耳鼻咽喉科展望会

雑誌

耳鼻咽喉科展望 (ISSN:03869687)

巻号頁・発行日

vol.26, no.5, pp.589-598, 1983-10-15 (Released:2011-08-10)

参考文献数

6

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Hearing acuity of 103 tank crews of the Self Defence Forces in the Fuji Educational Division were measured by pure tone audiometry and Békésy audiometry fixed frequency tracing at 4000 Hz. The crews were asked by questionnaire if they had any otologic symptoms, eg. tinnitus, stuffy feeling, autophonia, and hearing difficulty.All examinees were male and their age distribution was between 19 to 49 years. All of them have been exposed to tank-machine noise at the level of 80-95 dBSPL (C), and bombardment sounds 500 times a year at the peak level of 150 dBSPL (C) since they enlisted at 18 years of age.Stuffy feeing was reported by 8.2%, of them, autophonia by 8.2%, continuous tinnitus by 38.5% and 44.9% complained of being hard of hearing c5 dip of more than 30 dB was seen in 26 subjects and a sharp decline of more than 40 dB at 8000 Hz appeared in 17 ears of 12 subjects.A combination of c5 dip in one ear and sharp decline on the other was seen in 2 subjects.After subtracting the level of the aging component of hearing loss, the percentage of occurrence of hearing loss at 4000 Hz became extremely high when their employment period exceeded five years. In spite of their marked hearing loss at 4000 Hz, the fluctuation in continuous traceing in Békésy audiometry narrowed only in a few examinees.

著者

平出 文久 井上 鉄三 都川 紀正 椿 康喜代 沢田 政道 田中 英一

出版者

The Japan Broncho-esophagological Society

雑誌

日本気管食道科学会会報 (ISSN:00290645)

巻号頁・発行日

vol.31, no.3, pp.246-252, 1980

被引用文献数

8

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Cryosurgery is gaining more and more importance as a therapeutic modality within the field of head and neck surgery.<br>Cryosurgery was performed in two patients with hemangioma arising from the entrance of the esophagus.<br>Case 1: A 41-year-old woman was referred for the diagnosis of hemangioma in the entrance of the esophagus which had been present for approximately five years. The patient felt slight pain on deglutition and sometimes noticed hemoptysis. The lesion was treated with cryoapplication of -60°C on its surface through the direct laryngoscope under general anesthesia. Cryoapplications were repeated by overlapping frozen areas during treatment. The duration of the individual freezing cycles ranged from one and half to three minutes. Over a period of 3 weeks the patient received 2 cryosurgical treatments. Postoperative healing was uneventful. After 3 weeks following 2nd cryosurgery the lesion disappeared without leaving a remarkable scar. No recurrence was noted after one-year follow-up.<br>Case 2: A 54-year-old man was admitted to the hospital with a history of foreign body sensation in the throat. Endoscopic examination revealed a dark, blue swelling in the entrance of the esophagus, suggesting a hemangioma. The lesion was frozen in three applications of -60°C each time. The frozen region was overlapped to compass the entire tumor. After thawing the frozen areas began to swell. In 24 hours it was almost twice of its original size. Then the necrotic tissue was well demarcated from vital tissue and on the seventh postoperative day the brownish lump exfoliated and showed a persistent smaller tumor. Total regression of the hemangioma and overgrowth of normal mucosa followed with a satisfactory functional result. No further growth was observed after six-month follow-up.<br>The general treatment of the hemangioma in the larynx, hypopharynx and esophagus was briefly discussed.

著者

細川 智 田部 哲也 平出 文久 井上 鉄三

出版者

THE JAPAN OTOLOGICAL SOCIETY

雑誌

Ear Research Japan (ISSN:02889781)

巻号頁・発行日

vol.16, pp.238-240, 1985

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Acute sensori-neural hearing loss after exposure to loud sounds in rock music was experimently studied. With guinea pigs exposed to rock music for tour hours a day during one week, parmanent threshold shift (PTSs) were not recorded. Next, temporal threshold shifts (TTSs) were examied after exposing guinea pigs to rock music for 1-4 hours. There was a increased temporal threshold shifts (TTSs) at over two hours.<BR>Finally, with guinea pigs exposed to rock music for three hours and restricted in the bottle filled with water, temporal threshold shifts (TTSs) were greatest, but parmanent threshold shifts (PTSs) were not recorded at seven days later.