著者

古川 朋靖 渡辺 道隆 山川 卓也 正木 義男 加納 昭彦 市川 銀一郎

出版者

Japan Society for Equilibrium Research

雑誌

Equilibrium Research (ISSN:03855716)

巻号頁・発行日

vol.57, no.5, pp.480-486, 1998 (Released:2009-10-13)

参考文献数

15

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IntroductionFor transcranial magnetic stimulation of the facial nerve, a magnetic coil is fixed to the temporal region over the nerve. It has been reported that the facial nerve can be stimulated at the distal part of the auditory canal, and it is expected that the peripheral vestibular organs are included in the time-varying magnetic field. We examined the influence of magnetic stimulation on the peripheral vestibular organs using a stabilometer.MethodsExperiments were carried out on 10 healthy adults. Magnetic stimulation was administered to the temporal region including the peripheral vestibular organs and stabilometry was performed before and after stimulation. We used a G5500 system stabilometer (Anima Co.) with a sampling time of 20 msec. and recorded body sway for 60 sec. A Mag lite (Dantec Co.) was used for magnetic stimulation and a Synax ER 1100 (NEC-Sanei Co.) was used as the trigger. The stimulus was set at 4 Hz and stimulation was done 60 times. The output was set at about 40% of 1.9 Tesla (maximum output).ResultsWe analyzed the body sway length, 8-directional body sway velocities, and the power spectrum of the lateral body sway velocity. The total length of body sway and the velocity of lateral sway increased significantly after magnetic stimulation.

著者

正木 義男 渡辺 道隆 古川 朋靖 加納 昭彦 山谷 千恵美

出版者

Japan Society for Equilibrium Research

雑誌

Equilibrium Research (ISSN:03855716)

巻号頁・発行日

vol.57, no.3, pp.297-304, 1998 (Released:2009-10-13)

参考文献数

15

被引用文献数

2 2

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IntroductionVasovagal reflex (VVR) is a disease that has received attention in various fields.Recently, researchers have started to clarify its mechanism. Three patients with symptoms probably due to VVR were treated in this department and the Head up tilt test was used to diagnose dizziness due to VVR.PatientsThe three patients included a 21-year-old female (Case 1), a 26-year-old male (Case 2) and a 61-year-old female (Case 3). All three patients had chief complaints of spontaneous dizziness after standing or sitting for 5 to 30 minutes.ResultsThe duration of standing before the onset of positive findings was 9.5 minutes in Case 1 and 11 minutes in Case 2. In Case 3, positive findings were obtained 9.5 minutes after isoproterenol administration.DiscussionAll three patients showed spontaneous dizziness in either the standing or sitting position and the results of the Head up tilt test were positive. Therefore, dizziness seemed to be due to VVR in these patients. The instantaneous decrease in blood volume due to paradoxical activation of the vagus nerve may have induced dizziness, loss of consciousness and faintness. Because of severe patient stress during the Head up tilt test, this examination should be indicated only in those who are strongly suspected of VVR.

著者

安藤 一郎 新井 顕 渡辺 道隆 加納 昭彦

出版者

耳鼻咽喉科臨床学会

雑誌

耳鼻咽喉科臨床 (ISSN:00326313)

巻号頁・発行日

vol.88, no.12, pp.1625-1632, 1995-12-01 (Released:2011-12-12)

参考文献数

36

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Over the past 9 years, we studied 1090 cases of ABC (aspiration biopsy cytology) and 258 cases of malignant tumor. There were 3 false positive cases (1.2%) and 6 cases (2.3%) of histological misdiagnosis. Although we have not experienced fatal complications yet, we have recognized tuberuculous change in the needle tract after postoperative histology as a case of lymphoadenitis tuberuculosa.A search of the literature has revealed 4 cases of needle tract seeding after large needle biopsy and a case of embolism in the cerebral artery after ABC of head and neck lesions. Fatal complications of ABC were reported in 7 cases.Although the incidence of complication after ABC is not obvious, fatal complications of ABC are very rare in comparison with large needle biopsy and we consider that ABC is a safe method of clinical diagnosis.ABC imposes less burden on patients and differentiation of benign from malignant and identification of the presumable histological type are possible. Therefore, we conclude that ABC can be applied clinically in oto-rhino-laryngology.