Document Detail

Influence of drilling on the distortion product otoacoustic emissions in the non-operated ear.
MedLine Citation:
PMID:  19451738     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine possible changes in the outer hair cell (OHC) function related to drill noise exposure. METHODS: Distortion product otoacoustic emissions (DPOAE) were measured at frequencies of f(2) = 2, 3, 4 and 5 kHz, and a frequency ratio f(1)/f(2) = 1.22. The f(1) and f(2) levels were delivered at 65 dB SPL. DPOAE amplitudes were compared in 13 patients both before and after mastoidectomy, and between these patients and 5 patients who underwent tympanoplasty. RESULTS: The DPOAE amplitudes were significantly decreased at 2 and 4 kHz (p = 0.01 and p = 0.013, respectively) immediately after the mastoidectomy, and still differed from the preoperative results at these frequencies on the first post-mastoidectomy day. After the various individual fluctuations, the DPOAE amplitudes remained decreased in some of the patients at the end of the study. CONCLUSIONS: Drill-induced noise during mastoidectomy can cause reversible changes in DPOAE in the non-operated ear. OHC function may be diminished during the period after mastoid surgery, and last >1 month.
Lela Migirov; Michael Wolf
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2009-05-18
Journal Detail:
Title:  ORL; journal for oto-rhino-laryngology and its related specialties     Volume:  71     ISSN:  1423-0275     ISO Abbreviation:  ORL J. Otorhinolaryngol. Relat. Spec.     Publication Date:  2009  
Date Detail:
Created Date:  2009-07-17     Completed Date:  2009-10-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0334721     Medline TA:  ORL J Otorhinolaryngol Relat Spec     Country:  Switzerland    
Other Details:
Languages:  eng     Pagination:  153-6     Citation Subset:  IM    
Department of Otolaryngology Head and Neck Surgery, Sheba Medical Center (affiliated to Sackler School of Medicine), Tel Aviv University, Tel Aviv, Israel.
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MeSH Terms
Hair Cells, Auditory, Outer / physiology*
Hearing Loss / physiopathology,  surgery*
Intraoperative Complications / etiology*
Mastoid / surgery
Middle Aged
Noise / adverse effects*
Otoacoustic Emissions, Spontaneous*
Prospective Studies
Recovery of Function
Surgical Instruments
Tympanoplasty / adverse effects*,  methods
Young Adult

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

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