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Atmungsmechanik beim Tier. 4. Mitteilung : Die diagnostische Aussagefähigkeit von Untersuchungen mit dem Impuls-Oszilloresistometrie-System (IOS) beim Kalb
Reinhold, Petra; Langenberg, Annelie; Lekeux, Pierre
1998In Berliner und Munchener Tierarztliche Wochenschrift, 111 (7-8), p. 262-267
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Keywords :
lung function; cattle; diagnostics; mechanics of breathing; mpulse oscillometry; respiratory impedance
Abstract :
[en] Taking methodological and physiological aspects into account (see Part 3), the impulse oscillometry system (IOS) was found to be sensitive to detecting and to quantifying clinically relevant changes in respiratory mechanics in calves. Therefore, the complex respiratory impedance needs to be measured in terms of resistance and reactance within the frequency range between 5 Hz and 20 Hz. The behaviour of resistance and reactance in dependence of frequency allows to differentiate and to localise airway obstructions. Obstructions of upper (extrathoracic) airways were mainly characterised by a frequency independent increase in the resistance. Within the reactance curve, no change in the resonant frequency could be observed. In a peripheral airway obstruction both resistance and reactance changed. The most typical finding concerning resistance was that a negative frequency dependence occurred. The reactance became more negative. Following this, the resonant frequency increased. With progressive obstruction of the peripheral airways, the reactance became more informative than resistance.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Reinhold, Petra;  Bundesinstitut für gesundheitlichen Verbraucherschutz und Veterinärmedizin, Bakterielle Tierseuchen und Bekämpfung von Zoonosen, Jena
Langenberg, Annelie
Lekeux, Pierre ;  Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie - Doyen de la Faculté de Médecine vétérinaire
Language :
German
Title :
Atmungsmechanik beim Tier. 4. Mitteilung : Die diagnostische Aussagefähigkeit von Untersuchungen mit dem Impuls-Oszilloresistometrie-System (IOS) beim Kalb
Alternative titles :
[en] Review of respiratory mechanics in animals. 4. The diagnostic affirmation ability of research using the impulse oscilloresistometry system (IOS) in calves
Publication date :
1998
Journal title :
Berliner und Munchener Tierarztliche Wochenschrift
ISSN :
0005-9366
eISSN :
1439-0299
Publisher :
Verlag Paul Parey, Berlin, Germany
Volume :
111
Issue :
7-8
Pages :
262-267
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 08 March 2012

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