[en] The impulse oscillometry system (IOS) which was originally developed for human medicine was found to be suitable for analysing respiratory mechanics in spontaneously breathing animals. This technique is non-invasive. METHODOLOGICAL ASPECTS: In order to use the IOS-technique in animals, a tightly fitting face mask is necessary. Furthermore, a flexible tube needs to be inserted into the measuring system. While the tube does not influence the measured results significantly, the face mask may affect the measurements. Therefore, its influence on the measured respiratory impedance must be taken into account. To prevent methodological errors, the head and body position of the animal should be standardised during the IOS-measurement. Since the methodological variability of the system is very small, the measuring results are highly reproducible. PHYSIOLOGICAL ASPECTS: In growing subjects, all parameters of respiratory mechanics depend on body weight. Since respiratory physiology is influenced by circadian rhythms, measurements of different days are only comparable when they have been done each day at the same hour. Comparing the respiratory impedance of different animals of similar age and body weight, a considerable inter-individual variability was observed. Due to the low level of physiological intra-individual variability, the method seems to be especially useful for studying influences on the respiratory system (i.e. pharmaceutics, therapeutics) in long-term studies using the same group of subjects.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Reinhold, Petra; Bundesinstitut für gesundheitlichen Verbraucherschutz und Veterinärmedizin, Bakterielle Tierseuchen und Bekämpfung von Zoonosen, Jena
Steinbach, Günther
Langenberg, Annelie
Lekeux, Pierre ; Université de Liège - ULiège > Département de sciences fonctionnelles > Physiologie - Doyen de la Faculté de Médecine vétérinaire
Language :
English
Title :
Atmungsmechanik beim Tier. 3. Mitteilung : Methodische und physiologische Aspekte bei der Anwendung des Impuls-Oszilloresistometrie-Systems (IOS)
Alternative titles :
[en] Mechanics of breathing in animals. Part 3. Methodological and physiological aspects using the impulse oscillometry system (IOS)
Publication date :
1998
Journal title :
Berliner und Munchener Tierarztliche Wochenschrift
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