All issues
Volume 1986, Issue Supplement3
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
Masaru Ohyama, Takuo Nobori, Kazuyoshi Ueno, Tetsuya Shima, Yasuhiro M ...1986 Volume 1986 Issue Supplement3 Pages 1-9
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThe contact Nd-YAG laser system with the ceramics rods that were developed by us was applied to 28 patients undergoing had and neck surgery.
The technique could be performed at 8 to 9 watts for contact laser incision of the soft tissue and at 3 to 4 watts for the localized hyperthermia. Accurate incisions could be made without mis-shot of the laser irradiation to the target soft tissue. In addition, the technique caused only slight bleeding with minimal damage to adjacent tissue, and only slight edema and pain.
Proliferation of granulation tiss ueor scar formation was not observed.
On the basis of the results obtained, contact Nd-YAG laser surgery is a clinically beneficial modality for head and neck tumor surgery.View full abstractDownload PDF (14409K) -
Sigenobu Iwata1986 Volume 1986 Issue Supplement3 Pages 10-19
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThe incidence of laryngeal carcinoma in Aichi prefecture was studied.
The patients consisted of 477 men,28 women who were investig a ted during the past 5 years in cooperation with 15 main hospitals in Aichi prefecture.
The incidence of laryngeal carcinoma was 1.60 per 100.000 person-years (3.02in men and 0.18 in women). There were 344 cases of glottic type,116 of the supraglottic, and 23 of the subglottic type. Metastasis in the neck was observed in 59.4% with supraglottic type, and 30.3% with the subglottic type.
Pathological and clinical studies on 198 cases of laryngeal c arcinoma were investigated in our clinic during the past 10 years. There were 145 cases of glottic,36cases of supraglottic, and 13 cases of subglottic type. According to the T-classification, there were 61 cases in Ti,68 in T2,47 in T3 and 18 in the T4 group.
T1 and T2 groups mainly received radiation treatment (60G y), T3 and T4 groups were treated by total laryngestomy with neck desection, and some patients (31 cases)with radio-resistance tumors among Ti, T2 groups underwent partial laryngectomy and reconstruction.
Recently, CO2 Laser-microlaryngosurgery for carcinoma was applied for maintaining laryngeal functions. Among these patients, the three and five year survival rates were 74.4% and 68.8% respectively.View full abstractDownload PDF (11411K) -
Clinical and Experimental StudiesNoriyuki Yanagita1986 Volume 1986 Issue Supplement3 Pages 20-32
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSWe have experienced some patients with acute sensorineural deafness that was caused by sudden change of atmospheric pressure. They had various degrees of hearing loss, but mainly exhibited flat form deafness and recruitment positive. Vestibular symptoms were not present in most of cases, and complete hearing recovery occurred at early period.
In addition, we experimentally induced inner ear barotrauma in guinea pigs by rapid compression and decompression using high pressure chamber and observed the morphological changes of the organ of Corti and the values of the endocochlear potential.
As to the cause of inner ear barotrauma, we speculated that the change in the pressure was transmitted directly to the inner ear through the labyrinthine window membrane, giving a strong impulse to the endolymph via Reisner's and basilar membranes, resulting in damage to sensory hair cells. Round window membrane rupture and vascular disturbance in the inner ear were observed in some animals, but they seemed to rather concomitant findings than the cause.View full abstractDownload PDF (17314K) -
Shunkichi Baba1986 Volume 1986 Issue Supplement3 Pages 33-44
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSFor total ear reconstruction for congenital microtia, we have employed the method using autogenous costal cartilage in 116 patients. The procedure, performed in three stages, is as follows.
Stage 1 consis t s of repositioning the existing ear lobe and implantation of an autogenous costal cartilage framework.
In Stage 2, the recons t r ucted ear is elevated from the side of the head without exposing the framework, and in Stage 3, plasty of conchal cavity and tragus is done. The interval between the each stage is approximately 6 months. No meatotympanoplasty is done in the patient with unilateral atresia. The optimal age of patients undergoing this procedure is 10 years for the two reasons: 1) there is a sufficient area of non-haired skin to cover the implanted framework, and 2) a sufficient volume of elastic costal cartilage for making a framework can be obtained.View full abstractDownload PDF (21762K) -
Isao Takimoto1986 Volume 1986 Issue Supplement3 Pages 45-56
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSIn our clinic, many of the patients with peripheral facial paresis had no complaints of deafness or vertigo but had abnormal findings in a vestibular test. Thus, neuro-otological tests should be performed to differentiate between simple facial paresis and other cranial nerve complications.
Stapedial reflex often show some improvement before or simultaneously with the return of facial movement. Therefore, the stapedial reflex test and electroneuronography appear to be useful in evaluating the process or prognosis of peripheral facial paresis.
Treatment schedule for peripheral facial paresis is as follows: Patients with paresis diagnosed within 1-2 weeks after the onset are treated by infusion of V. B. complex, ATP and low molecular Dextran. When there is no improvement, steroid hormone injection is given intravenously.O2 +CO2, inhalation and ultrasonic treatment are also performed.
Patients diagnosed more than 3-4 weeks after the onset, receive the same treatment, and those showing no improvement undergo facial decompression.
The 3rd group who showed poor or no improvement a f ter one or more months despite of conservative treatment, might undergo some facial surgery such as decompression or nerve grafting.
Finally, effect of Ca-blocker in the animal experiment with facial paresis related to the treatment for clinical facial paresis have added.View full abstractDownload PDF (12658K) -
Takashi Tokita1986 Volume 1986 Issue Supplement3 Pages 58-66
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSTime series analysis of the vestibulospinal system with a 5-dimensional feedback model, an electromyographical study of sural muscle activity induced by galvanic stimulation of the labyrinth, and examination of labyrinthine postural response modulated by head position were performed to clarify the role the labyrinth in regulating upright standing posture.
The analysis of body sway in standing posture showed that the vestibulospinal system regulates body sways of low frequency but the extent of the contribution of the vestibulospinal system is low in the overall control of standing posture.
On examination of labyrinthine evoked EMGs, cathodal stimulation of the labyrinth induced a facilitation of the soleus muscle on the ipsilateral side and an inhibition of the soleus muscle on the contralateral side. These results indicated that the major role of the labyrinth in standing posture regulation was inhibitory control upon the extension of the contralateral leg rather than facilitatory influence on the extensor of the ipsilateral leg.
Direction of body swa y and leg muscle activity induced by galvanic labyrinthine stimulation were affected by neck torsion. The result indicates that the labyrinthine system produces the spinal reflex after processing information transmitted from the neck proprioceptor.View full abstractDownload PDF (1153K) -
Iwao Honjo, Masahiko Hayashi, Haruo Takahashi1986 Volume 1986 Issue Supplement3 Pages 67-75
Published: June 20, 1986
Released on J-STAGE: November 27, 2012
JOURNAL FREE ACCESSThe relationship between mucociliary and muscular clearance in the eustachian tube was investigated. To test clearance function for the tube, colored fluids of varying viscosities and volumes were injected into in the tympanum of cats. Displacement of the fluid through the tube was observed endoscopically. The interval between the instillation and beginning of discharge of the fluid from the pharyngeal orifice of tube was measured. Clearance time was prolonged with fluids having high viscosities. To test muscular clearance, the tensor veli palatini muscle was stimulated electrically. to simulate swallowing, and the number of contractions necessary for massive discharge of the fluid was counted. Massive discharge occurred only with low viscosity fluid placed in the tympanum, whereas small amouts of highly viscous fluid were cleared by linear discharge. We concluded that when the volume of middle ear effusion was small, the fluid was cleared by mucociliary clearance. When the volume of fluid was large, the low viscosity fluid was cleared by muscular clearance only, while highly viscous fluid was cleared both by ciliary and muscular clearance.View full abstractDownload PDF (2231K)
- |<
- <
- 1
- >
- >|