Aviation Deafness--Acute and Chronic

Campbell, Paul A.; Hargreaves, John D.

doi:10.1001/archotol.1940.00660020421001

Cited by 29 publications

(4 citation statements)

References 7 publications

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“…The standardized diving protocol implemented by The Ohio State University hyperbaric medicine department involved increasing inspired oxygen to 100% while elevating pressure by 1. 5 to 2 psi per minute up to 2 atmospheres absolute for 120 minutes or 2.4 atmospheres absolute for 90 minutes. Patients who had difficulty equalizing middle ear pressures were instructed to swallow and autoinflate as the descent was temporarily halted.…”

Section: Methodsmentioning

confidence: 97%

“…HBO therapy is not without risks and morbidity (Table II), and middle ear barotrauma(barotitis media) is a common side effect of this treatment modality 3 . Barotitis media is caused by a relative negative middle ear pressure (vs. atmospheric or dive chamber pressure), subsequent closure of the eustachian tube, tympanic membrane retraction, fluid extravasation into the middle ear space, blood vessel rupture, and ultimately tympanic membrane perforation 4,5 . Fernau et al 6 reported a 100% incidence of middle ear barotrauma in the presence of eustachian tube dysfunction during HBO therapy.…”

Section: Introductionmentioning

confidence: 99%

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Inner and Middle Ear Hyperbaric Oxygen‐Induced Barotrauma

1997

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Patients receiving hyperbaric oxygen (HBO) therapy can sustain inner and middle ear barotrauma. The purpose of this study is to define the incidence and significance of HBO-related barotrauma, in addition to establishing guidelines for prophylactic myringotomy or tympanostomy tube placement. Thirty patients were stratified into two groups (those able to autoinflate and those unable to autoinflate the middle ear) and barotrauma was assessed by otoscopy, tympanometry, high-frequency audiometry, and distortion product otoacoustic emission (DPOAE) testing. Ten of 11 patients (91%) from the noninflater group suffered middle ear barotrauma, and seven of 19 patients (37%) from the autoinflater group sustained middle ear barotrauma. Patients unable to autoinflate the middle ear were shown to have a higher incidence and greater severity of barotrauma than patients able to autoinflate. Pretreatment pressure-equalizing tubes or myringotomies should be considered for patients undergoing HBO therapy who have an artificial airway or have eustachian tube dysfunction and have failed conservative medical intervention. A significant change in DPOAEs (loss of emissions over a 1-kHz range) was found in four of 15 autoinflaters (27%) and two of seven noninflaters (29%). There was no significant difference between the groups. The decrease in DPOAEs was not associated with a change in conventional audiometry.

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Section: Methodsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Inner and Middle Ear Hyperbaric Oxygen‐Induced Barotrauma

1997

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“…Discussion and Conclusions on Acuity. The commonest activity in which pressure changes arise is high altitude flight; and much of the literature on aerotitis media has been written by flight surgeons.I, 4,8,12,13,19,21 Auditory acuity during flight, however, is complicated by at least two factors, the possibility' of an actual difference in pressure across the tympanic membrane, and auditory fatigue. It is difficult to design an experiment using actual flight conditions which provides an accurate index of loss of acuity as the result solely of pathological changes in the ear.…”

Section: Haines-harrismentioning

confidence: 99%

“…None of these reduced the incidence of aerotitis media on subsequent pressure tests. 4. Topical treatment consisted of five drops of .25 ro neosynephrine in physiologic sodium chloride solution, applied to nose and nasopharynx every two hours for several hours before a second pressure test.…”

Section: Haines-harrismentioning

confidence: 99%

XXXI Aerotitis Media in Submariners

Hl¹,

Harris²

1946

Ann Otol Rhinol Laryngol

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Acoustic Trauma in Man: Clinical and Experimental Studies

Perlman¹

1941

Archives of Otolaryngology - Head and Neck Surgery

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Audiometric studies made during the past decade by Bunch,1 Larsen,2 Dickson and his associates,3 McCord and his associates4 and others have helped to crystallize in otologic practice the clinical entity of acoustic trauma. Extensive bibliographies on the subject appear in the papers of Bunch, Larsen, and McCord and his associates. Many types of sound stimuli are now known to be injurious to the ear, e. g., the noise of pneumatically driven tools, such as those used in riveting, chipping steel and breaking concrete; the noise of motors\p=m-\gasoline (airplane), oil (Diesel) and electric; the noise of steam engines and whistles (locomotives) ; the noise of discharging firearms (large and small) ; single explosive sounds, such as that from a firecracker and that from a gas explosion, and the noise of machines, such as those used for grinding metal and for stamping out metal parts and drop hammers.From the Division of Otolaryngology, the University of Chicago.

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Aviation Deafness--Acute and Chronic

Cited by 29 publications

References 7 publications

Inner and Middle Ear Hyperbaric Oxygen‐Induced Barotrauma

Inner and Middle Ear Hyperbaric Oxygen‐Induced Barotrauma

XXXI Aerotitis Media in Submariners

Acoustic Trauma in Man: Clinical and Experimental Studies

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