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Related Experiment Videos

Inner and middle ear hyperbaric oxygen-induced barotrauma

M Beuerlein1, R N Nelson, D B Welling

  • 1Department of Otolaryngology, The Ohio State University, Columbus 43210, U.S.A.

The Laryngoscope
|October 23, 1997
PubMed
Summary
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Patients unable to autoinflate their middle ear face a higher risk of ear barotrauma during hyperbaric oxygen (HBO) therapy. Prophylactic ear tubes may be beneficial for high-risk individuals undergoing HBO treatment.

Area of Science:

  • Otolaryngology
  • Diving Medicine
  • Hyperbaric Medicine

Background:

  • Hyperbaric oxygen (HBO) therapy is crucial for treating various conditions.
  • Inner and middle ear barotrauma are known complications of HBO therapy.
  • Understanding the incidence and risk factors for HBO-related barotrauma is essential.

Purpose of the Study:

  • To determine the incidence and significance of ear barotrauma in patients undergoing HBO therapy.
  • To establish guidelines for prophylactic myringotomy or tympanostomy tube placement in at-risk patients.
  • To evaluate the relationship between middle ear barotrauma and autoinflation ability.

Main Methods:

  • Thirty patients undergoing HBO therapy were divided into two groups: those able to autoinflate their middle ear and those unable to.

Related Experiment Videos

  • Barotrauma was assessed using otoscopy, tympanometry, high-frequency audiometry, and distortion product otoacoustic emission (DPOAE) testing.
  • Audiological assessments were performed to evaluate hearing function and inner ear status.

    • Main Results:

    • A significantly higher incidence of middle ear barotrauma was observed in patients unable to autoinflate (91%) compared to those who could (37%).
    • Patients unable to autoinflate exhibited greater severity of barotrauma.
    • Significant changes in DPOAEs were noted in both groups, but without a significant difference between them or correlation with conventional audiometry.

    Conclusions:

    • The ability to autoinflate the middle ear is a critical factor in preventing HBO-related barotrauma.
    • Prophylactic pressure-equalizing tubes or myringotomies should be considered for patients with Eustachian tube dysfunction or artificial airways undergoing HBO therapy.
    • While DPOAEs showed changes, their association with conventional hearing loss in HBO barotrauma requires further investigation.