Yin Xinghong, Strömberg Anna-Karin, Duan Maoli
Department of Otolaryngology Head and Neck, Affiliated Hospital of Anhui Medical University, Hefei, China.
Acta Otolaryngol. 2011 Nov;131(11):1132-5. doi: 10.3109/00016489.2011.600725. Epub 2011 Jul 14.
Noise levels sufficient to cause sensorineural hearing loss can be measured when electrical drills and suction are used during otological surgery, particularly if a running burr touches the endosteal membrane of the otic capsule. Our noise measurements confirm the theory that 'soft surgery' should be employed during otological surgery, with focus on reduction of noise exposure.
To investigate noise levels generated by otological electrical drills and suction.
Airborne noise levels generated by different drills and suction tips of different diameters were evaluated in 12 fresh isolated human temporal bones by means of an ER7C probe microphone system.
Noise levels ranged from 120 to 122 dB SPL during drilling in cortical bone and from 117 to 121 dB SPL during drilling in the mastoid cavity. There was no statistically significant difference between cutting and diamond burrs (p > 0.05). Noise levels during cochleostomy ranged from 116 to 131 dB SPL. Noise levels recorded in the round window exceeded 130 dB SPL when the endosteal membrane was touched by the burr. Noise levels generated by various types of suctions ranged from 100 to 129 dB SPL and a positive significant relation was found between noise and increased luminal diameter of the suction tip up to a diameter of 2 mm.
在耳科手术中使用电钻和吸引器时，可测量到足以导致感音神经性听力损失的噪声水平，特别是当运转的钻头接触到耳囊的骨内膜时。我们的噪声测量结果证实了在耳科手术中应采用“轻柔手术”这一理论，重点是减少噪声暴露。
研究耳科电钻和吸引器产生的噪声水平。
通过ER7C探头麦克风系统，在12块新鲜离体的人类颞骨中评估不同钻头和不同直径吸引头产生的空气传播噪声水平。
在皮质骨钻孔时，噪声水平在120至122dB声压级之间；在乳突腔钻孔时，噪声水平在117至121dB声压级之间。切割钻头和金刚石钻头之间无统计学显著差异（p>0.05）。蜗窗造瘘时的噪声水平在116至131dB声压级之间。当钻头接触到骨内膜时，圆窗处记录到的噪声水平超过130dB声压级。各种类型吸引器产生的噪声水平在100至129dB声压级之间，并且在吸引头内径增加至2mm之前，噪声与吸引头内径增加呈显著正相关。
