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Drill-induced noise level during cochleostomy
Hong Yu1, Busheng Tong, Qing Zhang
1Department of Otolaryngology, Head and Neck Surgery, First Hospital of Jilin University , Changchun , China.
Acta Oto-Laryngologica
|June 24, 2014
Summary
Drilling during cochleostomy produces high noise levels, potentially causing inner ear trauma. Non-invasive noise monitoring is feasible for intraoperative recordings during this otological procedure.
Area of Science:
- Otolaryngology
- Audiology
- Neurosurgery
Background:
- Cochleostomy is a critical step in otological surgery.
- High-intensity noise exposure during surgery poses a risk of acoustic trauma to the inner ear.
- Intraoperative noise monitoring is essential for patient safety.
Purpose of the Study:
- To quantify noise levels during otological electrical drilling for cochleostomy.
- To assess the feasibility of in vivo noise monitoring during cochleostomy.
Main Methods:
- Acoustic measurements were performed on human cadavers using an ER7C probe microphone system.
- Drilling was conducted on the promontory of cochleae in 19 ears from 16 cadavers.
Main Results:
- Peak noise levels during cochleostomy varied significantly, ranging from 85.9 to 131.5 dB SPL.
- Three cases exceeded 130 dB SPL when the drill burr contacted the endosteal membrane.
- The study demonstrated the potential for intraoperative noise monitoring.
Conclusions:
- Drilling-induced noise during cochleostomy can reach levels high enough to cause acoustic trauma.
- Non-invasive, sterilizable equipment enables intraoperative noise measurements.
- Feasibility of in vivo noise monitoring during cochleostomy was confirmed.
