摘要:

The purpose of the present study was to determine the degree of nerve degeneration in patients with facial palsy from the number of spikes in M-wave which were induced from the facial muscle by means of a bipolar concentric needle electrode when the facial nerve was stimulated. Ten normal cases between 14 and 72 years of age and 46 cases with facial palsy between 12 and 73 years of age were examined. Histopathological findings of ten denervated nerves were studied to determine to what extent this method may reflect the state of nerve degeneration.

ISSN:0301-1569    

DOI:10.1159/000275199

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

In 15 normal-hearing persons a number of stapedius reflex responses 10 dB above individual reflex threshold has been measured and recorded. In an experimental condition the same stimulus tone has been used and the responses recorded. During the experiment two tones have been continuously presented – one of lower and one of higher frequency with amplitudes lying 10–15 dB underneath the tone evoking the stimulus. In an experimental condition an attenuation of the reflex response resulted. The normal reflex decay, first of all in higher frequencies has been controlled during experiment. The results indicate a similarity to those found under adequate conditions in other perceptive organs, these being interpreted as lateral inhibit

ISSN:0301-1569    

DOI:10.1159/000275200

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

Aspirin ototoxicity has been studied on guinea pigs by shiver-audiometry and histological investigation of the cochlear duct. One dose of 350 mg/kg has provoked, after 7 h, a mean hearing loss of 18–24 dB at 0.25–8 kHz, followed by complete recovery in 3 days. The difference between the administration of 50 mg/kg/day and 350 mg/kg/day consists of a wide extension of the frequencies involved, and in about 10 dB a greater hearing loss. In both cases, no appreciable recovery of hearing was observed after 22 days (the histological investigations were negative). The biochemical pathogenesis of aspirin ototoxicity is discussed and periodical audiometric controls before and during salicylate treatment are recommen

ISSN:0301-1569    

DOI:10.1159/000275201

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

The results are presented of a study, designed to examine the relation between the site of insertion of transtympanic ventilating tubes into the tympanic membrane and the period, elapsing before extrusion takes place. The results suggest that tubes inserted into the anterior part of the tympanic membrane remain in place for a longer period than tubes inserted posteriorly.

ISSN:0301-1569    

DOI:10.1159/000275202

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

A fistula on the lateral semicircular canal was found in 14 (4.8 %) ears with cholesteatoma. In 11 patients with preserved inner-ear function the cholesteatoma membrane was removed, the fistula was solidly closed with fascia, bone, and again fascia. The cavity was obliterated, the meatal wall reconstructed, and tympanoplasty performed in the same stage. Ten patients obtained a hearing gain, an average of 16.8 dB, while one developed anacusis. The results show that the cholesteatoma matrix can be removed from most fistulae. In the case of large fistulae, in which the cholesteatoma matrix is adhering to or invading the fistula, there is a great risk of perceptive hearing loss. By closing the fistula with fascia and bone and using a closed technique a lasting hearing gain may be achieved.

ISSN:0301-1569    

DOI:10.1159/000275203

出版商:S. Karger AG    

年代:1975

数据来源: Karger

摘要:

History revealed iatrogenic injury (tracheostomy, intubation, artificial respiration) to be the reason for tracheal stenosis in each of our 32 cases (18 female, 14 male). So far 23 cases have been treated successfully and they live without a cannula; seven are still under treatment, while two patients died (severe heart-attack, spontaneous pneumothorax) and one refused further treatment. We were relatively successful in six cases of sleeve resection. All other 26 cases were treated by creating a tracheal groove, in which tracheal mucosa and skin of the neck were joined and the caudal end mostly kept open by using a pedicle skin flap. Intrathoracic stenoses require a sternotomy. An additional thyroidectomy and lateral traction to the tracheal walls by using loops out of the sternomastoid muscle became necessary in many cases and we obligatorily used tamponades of plastic inlay bolts, the average time of treatment being 8 months.

ISSN:0301-1569    

DOI:10.1159/000275204

出版商:S. Karger AG    

年代:1975

数据来源: Karger

ISSN:0301-1569    

DOI:10.1159/000275205

出版商:S. Karger AG    

年代:1975

数据来源: Karger

ISSN:0301-1569    

DOI:10.1159/000275206

出版商:S. Karger AG    

年代:1975

数据来源: Karger

ISSN:0301-1569    

DOI:10.1159/000275207

出版商:S. Karger AG    

年代:1975

数据来源: Karger