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Biomedical subjects

W Kley

Publications and source records attributed to W Kley.

At least 37 records · Page 2Linked to original sources
PubMed1979

[Effects of pull upon the growth of the trachea (author's transl)].

The effect of pull following segmental resection with subsequent anastomosing was studied in animal experiments in regards to the growth of the trachea. A corresponding decrease in body-weight is demonstrated following resection of 4-7 tracheal segments. Even a small pull leads to a decrease of cartilage thickness of the entire trachea. The correlation between the number of the resected cartilage segments and the resulting stenosis in the region of the anastomosis is significant. The decreased area of the canal in the anastomosed region amounts to a maximum of 66% after resection of 7 tracheal segments without the appearance of disorders of ventilation in form of an in- and expiratory stridor. After resection of up to 3 tracheal segments telescopic cartilage overlappings are observed. The mucosa shows a metaplastic regeneration at the anastomosis.

Animals↗
PubMed1978

[The last ear (author's transl)].

An operation of the last ear should not be rejected completely, neither from the clinical nor from the audiological point of view. The special pathology of the ear should be considered critically. Many factors can influence the success of the surgical intervention. An exact and adequate diagnosis taking into consideration all the risk factors has to precede each intervention on the last ear. The personality of the patient and his psychological structure have an important influence on the final decision. The surgeon must be very thorough and careful in explaining the possible consequences of an operation. The intervention should be carried out by an experienced surgeon using a tried and proven method. In the case of operations that are neither threatening the life of the patient nor absolutely necessary from the medical point of view he should stop the intervention when--during the operation--the risk for the remaining hearing capacity results to be too high. In this situation the ear should be dried up and prepared for an hearing-aid. We should ever keep in mind that the hearing-aid even if the communication is not fully-satisfying--is better than an understanding by only lip-reading. The medical principle "nil nocere" is particularly important for the last ear.

Adult↗
PubMed1977

[Sensorineural deafness and cochlear otosclerosis (author's transl)].

The so-called labyrinthine otosclerosis is defined as a focal otosclerotic involvement of the labyrinthine capsule without stapes fixation. It produces a pure sensorineural hearing loss. The histology of this phenomenon is well known. The relative frequency of labyrinthine otosclerosis is between 4 and 40%, as referred in literature. On x-rays, an advanced demineralisation or complete obliteration of labyrinthic bone is suspicious of otosclerosis. There is no typical pattern of sensorineural hearing loss. But not seldom a fair discrimination index contrasts with a severe threshold evaluation in pure tone audiometry. 208 audiogramms of otosclerosic ears verified by stapedectomy were examined. After correction for normal presbyacusis the sensorineural hearing loss due to otosclerosis is twice that of presbyacusis. In otosclerosis tinnitus is often reported as of metallic type, but a characteristic tinnitus does not exist. There is no universal agreement about the relative frequency of vestibular disturbances in otosclerosis. One should diagnose labyrinthine otosclerosis only if several criteria found are not explanable otherwise, and these criteria are explained.

Audiometry↗