乳突钻孔对未手术耳畸变产物耳声发射的影响。
Effect of mastoid drilling on the distortion product otoacoustic emissions in the non operated ear.
作者信息
Shenoy Vijendra S, Vanka Siddharth, Rao Raghavendra A, Prasad Vishnu, Kamath Panduranga M, Bhat Jayashree
机构信息
Dept of ENT and Head & neck surgery, Kasturba Medical College, Manipal University, Mangalore, India.
Dept of ENT and Head & neck surgery, Kasturba Medical College, Manipal University, Mangalore, India.
出版信息
Am J Otolaryngol. 2015 Nov-Dec;36(6):832-6. doi: 10.1016/j.amjoto.2015.07.013. Epub 2015 Aug 6.
OBJECTIVE
To monitor the effect of mastoid drilling on the non-operated ear distortion product otoacoustic emissions.
MATERIALS AND METHODS
Distortion product otoacoustic emissions (DPOAEs) were measured at frequencies of f 2=2, 3, 4 and 5 kHz, and a frequency ratio f 1 /f 2=1.22. DPOAEs were measured in 49 cases, pre and post-operatively who underwent mastoid drilling procedures, compared with each other and with 49 controls who underwent myringoplasty and myringotomy procedures.
RESULTS
Amplitudes of DPOAEs decreased significantly in those who underwent mastoidectomies over all the measured frequencies in the immediate post-operative period but had recovered by the seventh post operative day.
CONCLUSION
Drill induced noise can cause temporary decrease in the DPOAEs postoperatively and hence temporary hearing loss for a period of one week.
目的
监测乳突钻孔对未手术耳畸变产物耳声发射的影响。
材料与方法
在f2 = 2、3、4和5kHz频率下测量畸变产物耳声发射（DPOAE），频率比f1/f2 = 1.22。对49例行乳突钻孔手术的患者在术前和术后测量DPOAE，并相互比较，同时与49例行鼓膜成形术和鼓膜切开术的对照组进行比较。
结果
行乳突切除术的患者在术后即刻所有测量频率的DPOAE幅值均显著下降，但在术后第7天恢复。
结论
钻孔产生的噪声可导致术后DPOAE暂时下降，从而导致一周时间的暂时性听力损失。
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