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  • Iron  (1)
  • Key wordsLaryngeal paralysis . Voice capability . Voice examination . Vocal penetrating capacity  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    HNO 47 (1999), S. 269-274 
    ISSN: 1433-0458
    Keywords: Schlüsselwörter Larynxparesen . Stimmliche Belastbarkeit . Stimmstatus . Stimmliche Durchdringungfähigkeit ; Key wordsLaryngeal paralysis . Voice capability . Voice examination . Vocal penetrating capacity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The clinical courses of vocal rehabilitation of patients with different degrees of laryngeal paralysis can proceed very differently, but usually do not correspond with the physical changes of glottic function seen on laryngoscopy and stroboscopy. In this study 43 patients with laryngeal paralyses were examined, of whom 28 had regeneration of nerve function. Fifteen did not show any improvement in glottal function. All patients were asked to describe their voices, after which subjective data were compared to objective findings concerning vocal penetrating capacity were found to be valid in reflecting therapeutic effects and for estimating voice capability.
    Notes: Zusammenfassung Die stimmliche Rehabilitation von Patienten mit Larynyparesen unterschiedlichen Ausmaßes verläuft sehr verschieden und häufig nicht in Übereinstimmung mit dem Bild der organischen Veränderung. In der vorliegenden Studie wurden 43 Patienten mit N.-laryngeus-inferior- und N.-laryngeus-superior-Paresen untersucht. Es wurden neben der Glottisfunktion stimmliche Parameter (Sprechstimmlage, Stimmgröße, Stimmumfang, Einschwingphase, Durchdringungsfähigkeit) den subjektiven Einschätzungen der Patienten (stimmliches Wohlbefinden, Belastungsdauer der Stimme) gegenübergestellt. Dabei wird deutlich, daß weitgehend unabhängig vom Regenerationsverhalten der Parese durch gezielte Behandlung eine vom Patienten subjektiv als gut bewertete stimmliche Rehabilitation möglich ist. Als Maß des Therapieerfolgs und Entscheidungshilfe in Fragen der Dauer der Arbeitsunfähigkeit haben sich vor allem die Stimmgröße, die Qualität der Einschwingphase und die Durchdringungsfähigkeit der Stimme geeignet erwiesen.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1327
    Keywords: Key words Raman microscopy ; Biomineralization ; Chiton ; Mollusc ; Iron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract  In situ Raman spectroscopy, in combination with energy dispersive spectroscopy, has been used for the first time to determine the identities and locations, at the micron level, of mineral phases present in single chiton teeth that have been extensively mineralized. At the later stages of development the major lateral teeth of the chiton Acanthopleura hirtosa show characteristic spectroscopic evidence for the presence of lepidocrocite (γ-FeOOH), magnetite (Fe3O4), and an apatitic calcium phosphate. Goethite (α-FeOOH) and ferrihydrite (5 Fe2O3·9 H2O), which have been detected previously in teeth at the early stages of mineralization, were not detected in this mature tooth. The spatial distribution of these phases was determined, providing evidence for the presence of a discrete layer of lepidocrocite between the magnetite and apatite regions, illustrating the complexity of the biomineralization process. The technique of laser Raman microscopy is shown to be ideal for the examination of small biomineralized structures in situ, such as chiton teeth.
    Type of Medium: Electronic Resource
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