Universität zu Köln

Mikolajczak, Stefanie, Meyer, Moritz Friedo, Hahn, Moritz, Korthaeuer, Christine, Jumah, Masen Dirk, Huettenbrink, Karl-Bernd, Grosheva, Maria ORCID: 0000-0002-5985-468X, Luers, Jan Christoffer ORCID: 0000-0002-8273-2234 and Beutner, Dirk (2015). Characterizing the Active Opening of the Eustachian Tube in a Hypobaric/Hyperbaric Pressure Chamber. Otol. Neurotol., 36 (1). S. 70 - 76. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1537-4505

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Abstract

Objective: Active and passive opening of the Eustachian tube (ET) enables direct aeration of the middle ear and a pressure balance between middle ear and the ambient pressure. The aim of this study was to characterize standard values for the opening pressure (ETOP), the opening frequency (ETOF), and the opening duration (ETOD) for active tubal openings (Valsalva maneuver, swallowing) in healthy participants. Design/Participants: In a hypobaric/hyperbaric pressure chamber, 30 healthy participants (19 women, 11 men; mean age, 25.57 +/- 3.33 years) were exposed to a standardized profile of compression and decompression. The pressure values were recorded via continuous impedance measurement during the Valsalva maneuver and swallowing. Based on the data, standard curves were identified and the ETOP, ETOD, and ETOF were determined. Results: Recurring patterns of the pressure curve during active tube opening for the Valsalva maneuver and for active swallowing were characterized. The mean value for the Valsalva maneuver for ETOP was 41.21 +/- 17.38 mbar; for the ETOD, it was 2.65 +/- 1.87 seconds. In the active pressure compensation by swallowing, the mean value for the ETOP was 29.91 +/- 13.07 mbar; and for the ETOD, it was 0.82 +/- 0.53 seconds. Conclusion: Standard values for the opening pressure of the tube and the tube opening duration for active tubal openings (Valsalva maneuver, swallowing) were described, and typical curve gradients for healthy subjects could be shown. This is another step toward analyzing the function of the tube in compression and decompression.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mikolajczak, Stefanie UNSPECIFIED UNSPECIFIED UNSPECIFIED Meyer, Moritz Friedo UNSPECIFIED UNSPECIFIED UNSPECIFIED Hahn, Moritz UNSPECIFIED UNSPECIFIED UNSPECIFIED Korthaeuer, Christine UNSPECIFIED UNSPECIFIED UNSPECIFIED Jumah, Masen Dirk UNSPECIFIED UNSPECIFIED UNSPECIFIED Huettenbrink, Karl-Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED Grosheva, Maria UNSPECIFIED orcid.org/0000-0002-5985-468X UNSPECIFIED Luers, Jan Christoffer UNSPECIFIED orcid.org/0000-0002-8273-2234 UNSPECIFIED Beutner, Dirk UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-418189
Journal or Publication Title:	Otol. Neurotol.
Volume:	36
Number:	1
Page Range:	S. 70 - 76
Date:	2015
Publisher:	LIPPINCOTT WILLIAMS & WILKINS
Place of Publication:	PHILADELPHIA
ISSN:	1537-4505
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MIDDLE-EAR MECHANICS; TUBOPLASTY; DYSFUNCTION; DILATION Multiple languages Clinical Neurology; Otorhinolaryngology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/41818