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7 Conclusions and Comments
Pages 201-208

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From page 201...
... . Service members may encounter these noise sources through training, standard military operations, and combat.
From page 202...
... On the other hand, impulse noise with peak levels exceeding approximately 140 dB SPL may be hazardous even for a single exposure. These guidelines for safe noise exposures are designed to protect the majority of individuals from noise-induced hearing loss, but not to ensure that every individual is protected.
From page 203...
... . No longitudinal studies have examined patterns of hearing loss over time in noise-exposed humans or laboratory animals who did not develop hearing loss at the time of the noise exposure.
From page 204...
... age, gender, race, eye color, and prior hearing loss, but these factors did not correlate with increased susceptibility to noise-induced hearing loss. The committee identified only one study in humans that had investigated the association between tinnitus and combined exposures to noise and other factors.
From page 205...
... CONCLUSIONS AND COMMENTS 205 hearing conservation programs, dating from the late 1970s, cannot be considered adequate to protect the hearing of service members. The committee concluded that hearing conservation activities from World War II through the 1970s would have been even less adequate to protect the hearing of service members than programs in place since the 1980s, because only early hearing protection devices of limited effectiveness were available and mandatory hearing conservation measures were in place only in the Air Force (Chapter 5)
From page 206...
... 206 NOISE AND MILITARY SERVICE been and remains limited, even in the most recent eras (Chapter 6)
From page 207...
... CONCLUSIONS AND COMMENTS 207 ments for audiograms at the completion of military service to ensure that any hearing loss or tinnitus arising during military service is adequately documented. The Department of Defense and the Department of Veterans Affairs should explore whether resources are available within the VA system to aid the military services in conducting audiometric tests and tinnitus assessments for personnel completing their military service.
From page 208...
... 208 NOISE AND MILITARY SERVICE 2. Further investigate the mechanism, natural history, epidemiology, measurement, and treatment of noise-induced hearing loss and tinnitus.


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