巻号一覧
後続誌
89 巻 (1986)
- 6 号 p. 689-
- 5 号 p. 559-
- 4 号 p. 419-
- 3 号 p. 261-
- 2 号 p. 135-
- 1 号 p. 1-
前身誌
89 巻, 3 号
選択された号の論文の8件中1～8を表示しています
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モデル実験からの考察沖津 卓二, 金子 豊, 小林 俊光, 粟田口 敏一, 河本 和友1986 年 89 巻 3 号 p. 261-266
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーWe investigated whether the peak position (mmH2O) of tympanogram (TG) always corresponds to the actual middle ear pressure (MEP).
Using especially designed plastic models (Endo et al., 1983) to simulate the human middle ear, the experimental results outlined in paragraph (1) and (2) led to the conclusions found in pragraph (3).
(1) The position (mmH2O) of TG peak was almost equivalent to the pressure behind the model's membrane, when the membrane was in the neutral position.
(2) When the model's membrane was retracted or adhesive to, promontory equivalent-site of the model, the TG peak markedly deviated to negative pressure such as -150mmH2O, although actual pressure behind the membrane was at atmospheric pressure. Tentative experiments indicated that either/all the volume displacement of the membrane, the pressure required to remove the adhesive membrane or the rheological properties of the membrane affected the position of the TG peak.
(3) From these experimental results it is suggested that the position of TG peak may not always indicate the actual MEP when the ear drum is extremly retracted or adhesive, although it is almost equivalent to the actual MEP when the ear drum is normal.抄録全体を表示PDF形式でダウンロード (467K) -
寺薗 富朗, 西村 武重, 矢野原 邦生, 日向 美知, 三好 茂, 山下 信昭1986 年 89 巻 3 号 p. 267-272
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーAmong the cases of ear surgeries at Kyoto First Red Cross Hospital from 1974 to 1983, 37 cases at age over 60 were analysed. The results were as follows:
1) The number of cases with cholesteatoma was more than that of suppurative otitis media. The incidence of carcinoma was more often in these patients than in younger patients.
2) The reasons the patients in this group visited to Kyoto First Red Cross Hospital were not only for hearing problems but also for others like facial palsies and severe otalgia.
3) Gram negative rods were detected frequently from ear discharge before surgeries.
4) The complications with these patients were more common than those with younger patients. It is better for us to take care of these complications and to treat them sufficiently, especially hypertensions and post operative vertigoes.
5) The improvements of hearing thresholds after surgeries were possible if the cases were carefully selected. According to our results, it is reasonable to do surgical treatments to these patients more actively than before.抄録全体を表示PDF形式でダウンロード (446K) -
初回手術例108耳の統計飯野 ゆき子, 湯浅 涼, 金子 豊, 西條 茂1986 年 89 巻 3 号 p. 273-281
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーOne hundred and eight ears of middle ear cholesteatoma in children (under 16 years) operated on for the first time were analyzed in terms of operative findings and postoperative course, and the following results were obtained.
1) The ratio of male cases to female ones was nearly 4. This suggests a higher incidence of cholesteatoma in boys than in girls.
2) The cholesteatoma spread into the middle ear cleft in more than half of the cases.
3) Postoperative cholesteatoma occurred more frequently in children than in adults, especially in cases of tympanic reconstruction.
4) Postoperative trouble such as recurrence, otorrhea, retraction pocket, accumulation of debris were found in 35% and 29% of the open method cases with and without obliteration respectively, while these trouble occurred in 65% of the cases of tympanic reconstruction.
5) From points 3) and 4), we conclude that the open method is safer and more preferable for the operation of cholesteatoma in children.抄録全体を表示PDF形式でダウンロード (807K) -
渡辺 勲, 藤巻 豊, 深間内 厚子, 中村 美弥子1986 年 89 巻 3 号 p. 282-286
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーCross-sectional areas of the maxillary sinus were evaluated by frontal section films using Polytome U. A frontal section of 3cm from Nasion was used. Two methods were adopted for the cross-sectional evaluations of the maxillary sinus areas. The direct method is to plot the area over semitransparent section paper divided into squares of which the unit area is 1mm2. The plotted area was directly calculated by the section paper. The indirect method is to use an approximated cross-sectional configuration of the maxillary sinus. The approximation was done by regarding the cross-sectional area as an trapezoid made of lines drawn by orbital floor, lateral wall of the inferior meatus, and the zygomatic recess, and so far. Sixty adults (male 35 and female 25) were included in the study. Majority of the cases were afflicted with chronic sinusitis and no bony destruction was noted.
The results were analyzed as to the difference between the sides and gender, and the linear correlation between two methods of evaluation for the cross-sectional areas. Statistically no significant difference was seen between the right and left sides. The results for male were larger than those of female with statistical significance. The linear correlation between the direct and indirect methods is very high.
The indirect method of evaluation for the cross-sectional area of the maxillary sinus is thus applicable to the evaluation of the postoperative changes of the maxillary sinus.抄録全体を表示PDF形式でダウンロード (375K) -
池田 脩三, 飯沼 壽孝, 福田 正弘1986 年 89 巻 3 号 p. 287-292
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーIn order to evaluate the thickness of the thinnest lateral wall of the inferior nasal meatus, 38 cadavers including 64 lateral nasal walls were used and dissected. Three compartments, i.e., maxillary process of the inferior turbinate (A), thin plate around the hiatus maxillaris (B), and perpendicular plate of the palatine bone (C) were selected and thinnest sites were evaluated using a micrometer up to the level of 0.1mm. The thinnest sites distributed at (A) in 45 sides (70%), at wider areas of (A, B, and C.) in 10 sides (16%), and at either (B)or(C) in 9 sides (14%). The thickness of the thinnest sites distributed as follows; 0-0.2mm, 46 sides (72%). 0.2-0.5mm, 15 sides (23%), 0.5-1.0mm, 2 sides (3%), and more than 1.0mm, one side (2%), Six sides showed dehiscences of the bone. The depth from the nares to the thinnest site is 47.6mm in average and the depth to the posterior wall of the nasopharynx is 94.4mm. Approximate one half of the depth to the nasopharyngeal wall will result in the depth to the side for puncture. A bibliographical discussion for the naso-antral puncture is also included referring original papers of Schmidt and Mikulicz.抄録全体を表示PDF形式でダウンロード (508K) -
内リンパ液の膨脹•収縮説有木 健1986 年 89 巻 3 号 p. 293-301
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーIn order to investigate the mechanism of caloric response, thermal stimuli were applied to the partially isolated semicircular canal of the bull frog. Warming or cooling stimulus to the canal side changed the ampullary nerve activity. When the semicircular canal was placed in the horizontal plane, thermal stimulus induced monophasic response, which is possibly due to a change in the density of the endolymph. When the semicicular canal was placed in the vertical plane, the responses were biphasic, which are implicated by both density change and thermoconvection flow of the endolymph. These results suggest that changes in the endolymphatic density as well as convection flow might be responsible for caloric nystagmus.抄録全体を表示PDF形式でダウンロード (621K) -
戸田 行雄, 中島 久美, 竹山 勇, 荻野 洋一, 熊谷 憲夫, 楠見 彰1986 年 89 巻 3 号 p. 302-308
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーThe fifty-one ears with congenital aural atresia (CAA) were examined not only radiologically but also audiologically.
1. Radiological examinations showed the followings:
1) There were six ears with partial atresia and forty five ears with complete atresia.
2) Middle ear anomalies were found in 40 ears (78%).
3) Inner ear anomalies were found in 3 ears (6%).
2. Audiological examination revealed the followings:
1) The average air conduction level was 66±15dB, while the average bone conduction level was 17±17dB.
2) The numbers of ears with bone conduction hearing level more than 20dB even in one frequency were 45 (88%).
3) The average air conduction hearing level was almost same throughout 6 frequencies, while the average bone conduction hearing level were severer in higher frequencies.
3. All cases were divided according to Henner's classification, and the results revealed that about 70% of unilateral CAA ears and 80% of bilateral ears were operable. Also, this classification reflected the hearing level quite well.抄録全体を表示PDF形式でダウンロード (1192K) -
人工内耳の基礎的研究平川 勝洋1986 年 89 巻 3 号 p. 309-323
発行日: 1986/03/20
公開日: 2008/03/19
ジャーナル フリーThe morphological changes of the guinea pig and chinchilla cochlea following extracochlear electrical stimulation were investigated. Three types of electrical pulsatile stimulation with various intensities were given through the silver ball electrodes placed on the round window membrane.
Positive and negative square wave pulse stimulation caused severe damage to the organ of Corti and spiral ganglion cell. Morphological changes were found in the ears stimulated for one hour at charge densities over 212μC/cm2/phase of positive and 318μC/cm2/phase of negative square wave pulse. Even at the lower stimulation level, long term direct current stimulation caused severe damage to the cochlea. In the most severely damaged area, most outer hair cells were missing and the pillar cells were degenerated. Some damage to the inner hair cells and loss of the spiral ganglion cells were also seen. All these changes were limited to the basal turn.
When symmetrical, biphasic, charge balanced pulses were used, some damage to the first row outer hair cell cilia was seen but the spiral ganglion cells showed no remarkable morphological change. This change of the stereocilia was limited to a small region of the basal turn and was much milder than those due to intracochlear electrical stimulation reported by other investigators. The electrical stimulation was also given to the cochlea damaged by streptomycin sulfate (SM) injection. The electrical stimulation did not modify the extent of SM effect on the cochlear nerve.
These results indicate that electrical stimulation without direct component does not adversely affect the cochlea if operated well within the electrochemically safe limit of electrode. Thus, from the morphological point of view, an extracochlear electrode should be given the top priority when the single channel electrode system is utilized.抄録全体を表示PDF形式でダウンロード (3004K)
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