ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Since introducing the retrolabyrinthine vestibular neurectomy (RVN) in 1978, we have performed 78 procedures with good results. In 1985, we introduced the retrosigmoid-internal auditory canal vestibular neurectomy (RSG-IAC), which allowed a more complete transection of the vestibular nerves in the IAC. Vertigo control has been excellent. However, in 50% of cases postoperative headaches have been a significant problem. In 1987, we combined these two approaches into one procedure, the combined retrolab-retrosigmoid vestibular neurectomy (RSG-RVN). The procedure is similar to a RVN, in that all bone covering the lateral venous sinus (LVS) is removed. It differs from the RVN in that the dura is opened just behind the LVS. The LVS is retracted forward, thereby exposing the cerebellopontine (CP) angle. This allows the surgeon the option to sever the vestibular nerve either in the CP angle or in the IAC, depending on the presence or absence of a cochleovestibular (CV) cleavage plane in the CP angle. The technique, results, and complications will be reported in this article.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

A retrospective study of 161 patients with Meniere's disease followed up for 9 years or more is presented. The development, with respect to hearing, caloric response, vertigo, and ability to work, was analyzed. The main functional loss was found to take place early in the course of the disease. There was an increase in bilaterality with time. A spontaneous relief in vertigo over the years has been noticed.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

During the past 25 years the authors have diagnosed over 1,600 acoustic neuromas. In almost all of the cases surgery for the removal of the tumor was performed shortly after the diagnostic test. However in 35 cases one or more follow-up imaging studies was performed since the patients refused surgery, or surgery was not performed because of the poor general condition of the patients or the small size of the lesion, particularly in individuals of advanced age. In the latter group there was a clear understanding that surgery would be performed if the follow-up study showed progression of the lesion.In this paper the authors review the evolution of the tumor in the 35 cases, try to establish the rate of growth in cases where the tumor became larger, and correlate tumor evolution to patient's age and clinical findings.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Experience has shown that early removal of acoustic tumors results in less morbidity because the rate of surgical, complications increases with tumor size.1Nevertheless, acoustic tumors are benign and grow slowly – facts that support conservatism in elderly patients. We managed. 21 patients with acoustic tumors over the age of 65. Eleven patients underwent immediate surgical excision. Ten patients were monitored clinically and with serial magnetic resonance imaging (MRI) or computed tomographic (CT) scans. To date, two of these patients have required surgical excision because of continued tumor growth. Our experience managing these patients both surgically and with “watchful waiting” is the subject of this report.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Hydroxylapatite is a calcium hioceramic that has the same chemical composition as living bone, Ca10 (P04) 6 (OH) 2. Since 1970 it has been used as a material in reconstructive prostheses and augmentation of lost tissues in various surgical specialities including maxilloiacial surgery, plastic surgery, otolaryngology, and orthopedics.For over 20 years the author, has used autograft and homograft ossicles in tympanoplasty. These incudi have been modified into prostheses that were utilized in ossicular reconstruction. During this time two principle prostheses have evolved, the notched incus with short and long processes. The short process prosthesis is used with an intact stapes, whereas the notched inrus with long process carries the sound pressure directly to the stapedial footplate. These prostheses have been successful in improving and maintaining hearing following tympanoplasty.104Unfortunately, however, the use of human tissue has certain limitations: it is not readily accessible and has a limited shelf life. Furthermore, clinicians are wary of using homogrdft tissue as concern over the AIDS virus spreads. Therefore it was felt prudent to develop a manmade prosthesis that would as nearly as possible match the advantages of living bone. Hydroxylapetite most nearly met those qualifications.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Cellular and humoral immune reactions may play a role in the ethiopathogenesis of an audiovestibular dysfunction. Immune-mediated inner ear disorders can be of cuchlear and retrocochlear origin.Autoimmunity plays occasionally a role, but is certainly not obligatory.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID

摘要:

Sixty-six patients with this disease have been treated to date with cyclophosphamide and prednisolone resulting in significant improvement in hearing. In some patients the vestibular compartment may be involved as well, but the clinical pattern is significantly different enough from Meniere's disease to distinguish it by the careful historian. The cornerstone of treatment is cylophosphamide, abetted by prednisolone. A test of treatment is to date the best method of determining who to treat for cure.

ISSN:0192-9763    

出版商:OVID    

年代:1989

数据来源: OVID