Universität zu Köln

Wolber, Philipp, Meyer, Moritz Friedo, Knesic, Kristijana, Rink, Svenja, Jansen, Stefanie, Klussmann, Jens Peter and Grosheva, Maria (2022). Prospective study on the Eustachian tube function during Frenzel maneuver in a hypobaric/hyperbaric pressure chamber. Eur. Arch. Oto-Rhino-Laryn., 279 (4). S. 1843 - 1851. NEW YORK: SPRINGER. ISSN 1434-4726

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Abstract

Introduction The Frenzel maneuver describes a technique for middle ear equalizing which is frequently used by apnea divers. It offers advantages compared to the most commonly used techniques such as the Valsalva or Toynbee maneuver. Until now, there is insufficient literature about the pressure dynamics and Eustachian tube (ET) function during the Frenzel maneuver. The aim of the present study was to characterize the ET function during the Frenzel maneuver. Materials and methods By means of an established standardized profile of compression and decompression in a hypo/hyperbaric pressure chamber, we examined different parameters such as the ET opening pressure (ETOP), ET opening duration (ETOD), and ET opening frequency (ETOF) in 11 experienced apnea divers and compared them to the parameters during the Valsalva and Toynbee maneuver. Results Standard values for ETOP, ETOD, and ETOF could be established for the Frenzel maneuver under standardized conditions in a hypo/hyperbaric pressure chamber. Compared to the Frenzel maneuver, ETOP was higher and ETOD longer (both p < 0.001) during the Valsalva maneuver whereas ETOP was lower and ETOD shorter (both p < 0.001) during the Toynbee maneuver. No difference regarding ETOF was observed between the Frenzel, Valsalva, and Toynbee maneuver. Discussion The Frenzel maneuver was shown to be at least as effective as the Valsalva maneuver concerning ET opening. We believe that knowledge of the Frenzel technique might facilitate the pressure equalization during diving and recommend implementation of an appropriate equalization training in apnea and scuba diving education.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wolber, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED Meyer, Moritz Friedo UNSPECIFIED UNSPECIFIED UNSPECIFIED Knesic, Kristijana UNSPECIFIED UNSPECIFIED UNSPECIFIED Rink, Svenja UNSPECIFIED UNSPECIFIED UNSPECIFIED Jansen, Stefanie UNSPECIFIED UNSPECIFIED UNSPECIFIED Klussmann, Jens Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Grosheva, Maria UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-570947
DOI:	10.1007/s00405-021-06888-1
Journal or Publication Title:	Eur. Arch. Oto-Rhino-Laryn.
Volume:	279
Number:	4
Page Range:	S. 1843 - 1851
Date:	2022
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1434-4726
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Otorhinolaryngology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57094