PubMed Health⌕ Search

Biomedical subjects

E Eitschberger

Publications and source records attributed to E Eitschberger.

30 records · Page 2Linked to original sources
PubMed1977

[Use of the temporary osteoplastic epitympanotomy for allogenetic compound middle ear grafts (author's transl)].

The topography and the size of the single middle ear structures and the possibilities of damage are shown, as they face the otosurgeon using the temporary osteoplastic epitympanotomy in connection with middle ear implants. The landmarks and technical aids are named, which make this operation a save and quick approach for the removal of the middle ear pathologies and in the use of allogenetic material.

Ear, Middle↗
PubMed1977

[Implantation of ossicles (A histological study in animals) (author's transl)].

Autogenetic and allogenetic incuses as well as xenogenetic malleus were implanted into the middle-ear of rabbits after different procedures of conservation. The process of healing was studied by histological examination. The different conservation methods are leading to different antigenic qualities of the donor material. A different reorganization along the wurse of the donor vessels is resulting. Accordingly a different extent of osteoneogenesis of the intercellular substance is induced. The vascular tissue showed a revascularization in the case of autogenetic transplantation and in the case of implantation after cialit conservation of 1:5000. Whereas deep-freezing led to swelling, cialit conservation 1:500 to temporary fibrosis of the sides of vessels. Hyalinosis of the vessels was observed after lyophilization and gamma-sterilization of the xenogenetic malleus. The different effects on the healing process are discussed.

Animals↗
PubMed1977

[Histologic-histochemical findings in the salivary glands of guinea pigs after sectioning the chorda tympani].

We investigated Gl. submandibularis and Gl. sublingualis of the guinea-pig 1, 2, 5, 7, 14 und 28 days after section of the Chorda tympani with histological-histochemical methods. The innervation pattern of both glands (Gl. submandibularis: aminergic-cholinergic double innervated; Gl. sublingualis: cholinergic innervated) remains unchanged. In the gland cells the following effects were observed: a) Gl. sublingualis. In the first 3 days apocrine and holocrine secretion phenomena are often seen, suggesting a maximal stimulation of the gland parenchyma. They are accompanied with cellular reactions of the interstitial space. In a second phase a new gland cell population appears that uniformly exhibits intracellular accumulation of secretion products. Involution begins from the 14th day on. Secretory cells are dedifferentiated to intercalated duct cells; autophagic processes help to degradate the accumulated secretion granules. b) Gl. submandibularis. Here the effects are less dramatic. The accumulation of the secretory granules starts as soon as 24 h after section of the Chorda and is maximal between the 5th and 8th p. o. day. Involution of the gland begins from the 14th day on. The accumulated secretory granules show high activities of two histochemically demonstrable enzymes, the cholinesterase and the peroxidase.

Animals↗
PubMed1977

[The histological changes in cartilage (incus) in the middle ear after conservation--an animal study (author's transl)].

This study demonstrates the histological changes of incus cartilage after transplantation into the middle ear space of rabbits. Conservation was performed by deep-freezing, lyophilisation in connection with gamma-irradiation, or with Cialit in differing dilutions. Controlled deep-freezing at about -196 degrees C and uncontrolled deep-freezing at about -20 degrees C guarantee after transplantion the survival of some vital chondrocytes. The other methods of conservation cause death of all chondroxytes. Cartilage prepared by these methods demonstrates potential for new bone formation. Only the xenogenetic cartilage loses its osteogenic potential after treatment by lyophilisation in connection with gamma-irradiation. The histological value of the transplant differs according to the method of conservation. No special tendency for resorption or inflamatory reactions could be seen.

Animals↗
PubMed1977

[The histological reaction of cialit preserved hyaline and elastic cartilage implanted to replace partially bony wall of the guinea-pig bulla (author's transl)].

Cialit preserved cartilage was used to fill defects of the bulla of porpoises and the histological healing was studied. Hyaline and elastic cartilage are showing an integration without reactions. The cartilage is resorbed consecutively by the recipient and substituted by bone. Whereas the hyaline cartilage shows a complete bony substitute and a small enlargement we can registrate that the elastic cartilage often shows a resorptive tendency with replacement of connective tissue and loss of the shape. The histological results are corresponding to the clinical results when using preserved cartilage in middle ear surgery for restoring the posterior wall.

Age Factors↗
PubMed1976

[Determination of mercury-content of tissues preserved in cialit (author's transl)].

The mercury-tissue-concentrations of implants (structures of the middle ear, bones, cartilage, dura) after preservation in solutions of cialit are mostly independent on preservation conditions, low and seem to be physiological. A positive correlation exists between the weight of the implant and the mercury-tissue concentrations. An enrichment with mercury-ions cannot be stated. The statements do not concern the mercury which is bound on cialit in the implant.

Cialit↗
PubMed1976

Automatic recording and evaluation of neuronography.

The introduction in the 60' s of the Nerve Excitability Test (NET) by Laumans and Jongkees for the diagnosis of Bell's palsy stimulated an interest of quantitative testing of the facial nerve. In 1970 Yanagihara reported the Evoced Myography (EMG; i.e. NET is combined with EMG). Starting with electrophysiological basis of the impulse spread of peripheral nerves May, in 1971, extended this concept by including supraliminal stimuli, i.e. Maximal Stimulation Test (MST), for diagnostic purposes. This method eventually developed into what is known as neuronography (Esslen, Huffmann, Ehrenberger, Satoh). It is undoubtedly a refinement in the question of prognosis of Bell's palsy. Continuing the original concept of May we have developed an electronic device with which to carry out automatically the neuronography that demonstrates an evaluation on a numeric display. We use the conventional bipolar negative square wave for a 1 ms stimulation. We stimulate the angle of the mandible, where the ramus marginalis can be readily found in all patients. Neuronography and Evoked Myography provide earlier a more precise prognosis of facial palsy than Nerve Excitability Test (NET). We developed an electronic device for the Maximal Stimulation Test (MST) of May, M., that is automatic. The device counts the spikes of the evoked myogram. A time window is related to the stimulus to exclude stimulus noise and background muscle noise from the counter. Only spikes seen in this window are processed. The number of spikes generated per stimulus is the measurement of the live axons in a stimulated nerve.

Electronic Data Processing↗