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Related Experiment Videos

Drill- and suction-generated noise in mastoid surgery

J L Parkin, G S Wood, R D Wood

    Archives of Otolaryngology (Chicago, Ill. : 1960)
    |February 1, 1980
    PubMed
    Summary

    Suction irrigation during temporal bone surgery generates the highest noise levels, reaching 107 dB(A). Drilling noise ranges from 65-96 dB(A), with combined procedures exceeding 108 dB(A), potentially impacting patient hearing.

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    Area of Science:

    • Otolaryngology
    • Neurosurgery
    • Audiology

    Background:

    • Temporal bone surgery involves drilling and suction, which can generate significant noise levels.
    • Potential hearing threshold shifts in patients undergoing mastoid surgery are sometimes observed postoperatively.

    Purpose of the Study:

    • To measure air-conduction noise levels in the external and middle ear during temporal bone surgery.
    • To identify the primary sources and contributing factors to surgical noise exposure.

    Main Methods:

    • Noise levels were measured using various drills (diamond burrs, cutting burrs, Hall, Stryker, Emesco) and suction irrigation techniques.
    • Drilling was performed both with and without suction irrigation.
    • Measurements were taken for ipsilateral ear exposure.

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    Main Results:

    • Suction irrigation alone produced the highest noise levels, averaging up to 107 dB(A).
    • Drilling noise levels varied from 65 to 96 dB(A) depending on the drill and burr type.
    • Simultaneous drilling and suction irrigation generated noise levels between 91 and 108 dB(A).
    • Cutting burrs were up to 9 dB(A) more intense than diamond burrs.

    Conclusions:

    • Suction irrigation is a major contributor to high noise levels during temporal bone surgery.
    • The measured noise levels, particularly from suction, may explain postoperative hearing threshold shifts in patients.