Document Detail

Short-duration space flight and hearing loss.
MedLine Citation:
PMID:  12869924     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: The study goal was to determine whether a single Space Shuttle mission can induce decrements in astronaut hearing. Study design We retrospectively compared audiogram information obtained from Space Shuttle astronauts at 10 days preflight, day of return (R + 0), 3 days after landing return (R + 3), and at a mean delayed postflight follow-up of 8 months.
RESULTS: Temporary threshold shift (mean, 4.6 dB) was noted in R + 0 versus preflight conditions (P < 0.01). Small permanent threshold shifts (mean, 0.83 dB) were found at R + 3 and postflight follow-up compared with preflight in the lower frequencies (500 to 2000 Hz), and corresponding pure tone average (P < 0.001). Conclusions and significance The data indicate that a single Shuttle flight can induce a substantial temporary threshold shift and a small but statistically significant permanent threshold shift, particularly in the frequencies involved in speech reception. Although single-mission effects are small, cumulative effects over several missions may ultimately produce clinically significant hearing loss.
Carrie A Roller; Jonathan B Clark
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery     Volume:  129     ISSN:  0194-5998     ISO Abbreviation:  Otolaryngol Head Neck Surg     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-07-18     Completed Date:  2003-09-16     Revised Date:  2013-05-20    
Medline Journal Info:
Nlm Unique ID:  8508176     Medline TA:  Otolaryngol Head Neck Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  98-106     Citation Subset:  IM; S    
Bobby R Alford Department of Otorhinolaryngology, Baylor College of Medicine, USA.
Space Flight Mission:
Flight Experiment; STS Shuttle Project; manned; short duration
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MeSH Terms
Auditory Threshold / physiology*
Ear Protective Devices
Hearing Loss, Bilateral / diagnosis,  etiology*,  prevention & control
Retrospective Studies
Space Flight*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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