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- Title
Eustachian tube function measured as pressure equilibration and sound transmission capacity. A comparison in healthy ears.
- Authors
Andréasson, Lars; Ivarsson, Alf; Luttrup, Svante; Möllerström, Björn; Tjernström, Örjan; Andréasson, L; Ivarsson, A; Luttrup, S; Möllerström, B; Tjernström, O
- Abstract
In a series of 68 healthy ears the muscular opening function of the Eustachian tube was assessed in two different ways. A pressure equilibration capacity of +/- 100 mm H2O was tested by a quantitative impedance technique using a pressure chamber and compared to sound transmission capacity recorded by sonotubometry at frequencies of 6, 7 and 8 kHz. In contrast to the pressure equilibration test, sonotubometry does not allow a quantitative assessment of Eustachian tube function and furthermore, sonotubometry yields false-positive as well as false-negative results due to the great variations in sound pressure generated by the deglutition maneuvers themselves.
- Subjects
EUSTACHIAN tube; TYMPANIC membrane; COMPARATIVE studies; DEGLUTITION; RESEARCH methodology; MEDICAL cooperation; PRESSURE; RESEARCH; SOUND; EVALUATION research; PHYSIOLOGY
- Publication
ORL, 1984, Vol 46, Issue 2, p74
- ISSN
0301-1569
- Publication type
journal article
- DOI
10.1159/000275690