Parkin J L, Wood G S, Wood R D, McCandless G A
Arch Otolaryngol. 1980 Feb;106(2):92-6. doi: 10.1001/archotol.1980.00790260024008.
The air-conduction noise levels in the external and middle ear generated by drilling and suction during temporal bone surgery were measured. Variables included diamond burrs, cutting burrs, two different air drills (Hall and Stryker) an electric drill (Emesco), and drilling with and without suction irrigation. The results show that the single factor contributing the highest noise level is suction irrigation, which exposes the ipsilateral ear to noise levels averaging up to 107 dB (A). The average noise levels of drilling range from 65 to 96 dB (A) varying with the drill and burr used. Simultaneous drilling and suction irrigation generated noise levels ranging from 91 to 108 dB (A). Cutting burrs were found to be up to 9 dB (A) more intense than diamond burrs. Exposure to these noise levels may account for shifts in the hearing thresholds sometimes apparent in postoperative audiograms of mastoid surgery patients.
测量了颞骨手术中钻孔和吸引过程在中耳和外耳产生的气导噪声水平。变量包括金刚石磨头、切割磨头、两种不同的气钻（霍尔气钻和史赛克气钻）、一台电钻（埃姆斯科电钻），以及有无吸引冲洗的钻孔操作。结果表明，导致最高噪声水平的单一因素是吸引冲洗，这会使同侧耳朵暴露于平均高达107dB（A）的噪声水平。钻孔的平均噪声水平在65至96dB（A）之间，因使用的钻头和磨头而异。同时进行钻孔和吸引冲洗产生的噪声水平在91至108dB（A）之间。发现切割磨头产生的噪声比金刚石磨头高9dB（A）。暴露于这些噪声水平可能是乳突手术患者术后听力图中有时出现听力阈值变化的原因。
