CAJ | 학술논문

目的探讨耳显微手术中电钻及吸引器产生的噪音对非手术耳听力的影响.方法采用ER-7e声级计记录中耳手术中不同规格的切割钻、金钢钻和吸引器噪声,比较非手术耳术前、术后2周、术后1月及术后3月的纯音测听骨导阈值.骨导听阈0.25～8.00 kHz至少2个或2个以上频率减少≥10 dB为术后骨导听阈下降阳性,增加≥10 dB为术后骨导听阈提高阳性.结果手术中不同规格的电钻和不同大小吸引器头产生的噪声强度分别为107.5～113.7 dB SPL和96.7～110.5 dB SPL;20例于术患者随访中发现7例(35.O%)患者非手术耳术后2周或1个月骨导阈值提高阳性.术后3个月骨导阈值基本恢复正常.结论耳显微手术中电钻和吸引器噪声可引起非手术耳听力短暂阈值漂移,三个月后听力基本恢复术前水平.
목적 탐토이현미수술중전찬급흡인기산생적조음대비수술이은력적영향.방법 채용ER-7e성급계기록중이수술중불동규격적절할찬、금강찬화흡인기조성,비교비수술이술전、술후2주、술후1월급술후3월적순음측은골도역치.골도은역0.25～8.00 kHz지소2개혹2개이상빈솔감소≥10 dB위술후골도은역하강양성,증가≥10 dB위술후골도은역제고양성.결과 수술중불동규격적전찬화불동대소흡인기두산생적조성강도분별위107.5～113.7 dB SPL화96.7～110.5 dB SPL;20례우술환자수방중발현7례(35.O%)환자비수술이술후2주혹1개월골도역치제고양성.술후3개월골도역치기본회복정상.결론 이현미수술중전찬화흡인기조성가인기비수술이은력단잠역치표이,삼개월후은력기본회복술전수평.
Objective To investigate the effects of noises generated by drilling and suctioning on the non-operate ear during an otological procedure. Method An ER-7c Sound Level Meter was used to measure noise levels from drilling and suctioning. Bone-conduction hearing thresholds in the non-operated ear were measured before and at two weeks, one month and three months after operation. A change of 10 dB or more at 2 frequencies or more between 0.25 and 8 kHz was considered significant. Result Noise levels generated by different otologic drills and suction tips ranged from 107.5 to 113.7dB SPL and from 96.7 to 110.5 dB SPL, respectively. In seven (35.0%) of the 20 patients studied, bone-conduction thresholds in the contralateral ear remained elevated at two weeks and one month after surgery, but fully recovered at three months after surgery. Conclutions Drilling and sunction noises during an otological surgery can cause temporary hearing threshold changes in the contralateral ear. This adverse effect recovers in three months postoperatively.