Quantitative analysis of inner-ear barotrauma using a Eustachian tube function analyzer

Area of Science:

• Diving Medicine
• Otolaryngology
• Barotrauma Research

Background:

• Inner-ear barotrauma (IEBt) is a potential risk for recreational divers.
• Understanding the factors contributing to IEBt is essential for diver safety.

Purpose of the Study:

• To investigate the association between Eustachian tube function and the occurrence of inner-ear barotrauma (IEBt) in recreational divers.
• To compare Eustachian tube function in divers with IEBt versus healthy individuals.

Main Methods:

• A comparative study involving 16 recreational divers with IEBt and 20 healthy volunteers.
• Eustachian tube function was assessed using regular impedance testing.
• Comparison of impedance test results between the IEBt group and the control group.

Main Results:

• No significant overall differences in Eustachian tube function were found between IEBt divers and healthy volunteers.
• However, seven IEBt divers displayed irregular compliance curves during impedance testing.
• Vertigo and high-tone hearing loss were reported in seven IEBt divers, with symptoms worsening at greater depths.

Conclusions:

• A comprehensive evaluation of Eustachian tube function is recommended for scuba divers to prevent IEBt.
• Pre-dive treatment of any identified Eustachian tube dysfunction is advised.
• Further research is needed to better understand IEBt mechanisms and risk factors in divers.