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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 242 (1985), S. 217-223 
    ISSN: 1434-4726
    Keywords: Laryngectomy ; Surgical vocal rehabilitation ; Free jejunal graft
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary After laryngopharyngectomy and reconstruction of the upper digestive tract, a free jejunal graft can be anastomosed in an isoperistaltic direction end-to-end to the trachea and the hypopharynx in order to form a shunt for vocal rehabilitation. Following placement of the shunt, no special care is required nor does any patient show any aspiration. Because of a low-flow resistance of the shunt, patients so treated possess long-lasting phonation with loud and modulated voices.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 232 (1981), S. 131-137 
    ISSN: 1434-4726
    Keywords: Ratte ; Cochlea ; Limbus spiralis ; Kapillarvolumen ; Limbuszellen ; Endothelzellen ; Rat ; Cochlea ; Spiral limbus ; Capillary volume ; Limbus cells ; Endothelial cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The capillaries of the spiral limbus in the cochlea of the laboratory rat were investigated under light and electron microscopy. A stereological examination of the capillary volumes of specimens injected with horseradish peroxidase was performed. The volume of capillaries amounted to 2.87%, and, as such, is very high. The ultrastructure of the capillaries showed continuous endothelial cells and basal laminae, discontinuous pericytes and varying relations towards the surrounding tissue. Morphological criteria, such as microvilli and plasmalemmal vesicles, suggest a significant transendothelial transport. The causes for the abundance of vessels in the spiral limbus are discussed: the transport of oxygen to the perilymph and the need of substances for the formation of the tectorial membrane seem to be important factors. The transport processes are obviously controlled by the endothelial cells as well as by the spiral limbus cells.
    Notes: Zusammenfassung Der Limbus spiralis cochleae ist ein reich kapillarisiertes Gebiet. An mit Meerrettich-Peroxidase injizierten Präparaten von der Ratte konnte das Kapillarvolumen als Maß für die Kapillardichte stereologisch mit 2,87% bestimmt werden. Dieser Wert liegt über den von der nervösen Substanz der Cochlea (Ganglion spirale, Nervus cochlearis) gewonnenen Werten. Damit erweist sich der Limbus spiralis neben der Stria vascularis als wichtiges Kapillargebiet der Cochlea. Das Epithel der untersuchten Kapillaren ist kontinuierlich. Die Endothelzellen lassen Zeichen der Mikropinozytose erkennen. Die Basallamina ist regelmäßig mit mehreren Perizytenfortsätzen bedeckt. Im Perivaskulärraum finden sich Ansammlungen feingranulärer oder filamentöser Substanzen, wie sie auch im übrigen Interstitium des Limbus beobachtet werden. Die Limbuszellen bilden mit Hilfe zahlreicher Zellkontakte Zellkomplexe, die zusammen mit den Endothelzellen den Flüssigkeits-und Stofftransport dieses Areals zu kontrollieren scheinen.
    Type of Medium: Electronic Resource
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