Effect of repeated dives in salt and fresh water on function of the tympanic membrane and its anatomical changes.

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00008968

Enrollment

Registered

2015-07-28

Start date

2015-08-28

Completion date

Unknown

Last updated

2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anatomical changes of tympanic membrane and the middle ear ventilation H69.8

Interventions

Group 1: The otoskopic examination and tympanometry are performed after salt-water dives. The dives are not performed for the study, the examiner is accompanying the divers Group 2: The otoskopic exam

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Signed informed concent The participant is planning to dive only in the saltwater (Sea) The participant is planning to dive only in the fresh water (Lake) The participant is 18years old or older

Exclusion criteria

Exclusion criteria: Diving 12h prior to the trial Diving not allowed for health reasons Participation in this trial denied by the participant

Design outcomes

Secondary

Measure	Time frame
The tympanometric changes (equalization, compliance of the tympanic membrane) (without and after Valsalva). THe measurement is done before the 1st dive every day and after every dive.	—

Primary

Measure	Time frame
The anatomical and physiological changes of the tympanic membrane - Otoskopic examinations (TEED-classification) prior to the 1. dive every day and after every dive	—

Countries

Germany

Contacts

Public ContactMaria Grosheva

HNO-Uniklinik Köln

maria.grosheva@uk-koeln.de02214784755

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026