DOI: http://dx.doi.org/10.18203/issn.2454-5929.ijohns20205068

Extended high frequency hearing sensitivity in normal contralateral ears exposed to mastoid drill noise in patients undergoing mastoid surgery

Arunabha Chakravarti, Prabhakar Upadhyay, Rahul Bijarniya, Indu Shukla

Abstract


Background: This study aimed at evaluation of extended high frequency hearing in non operated normal ear in patients undergoing mastoid surgery using otological micro drill.

Methods: A hospital based prospective observational study was carried out. Patients up to 40 years of age with unilateral ear disease were recruited and divided into two groups- mastoidectomy group comprising 30 patients who underwent mastoid surgery using high speed microdrill and tympanoplasty group who underwent surgery without using microdrill. Pure tone audiometry (conventional and extended high frequency) was performed preoperatively, on 3rd and 10th postoperative day.

Results: In mastoidectomy group, Air conduction thresholds in extended high frequency showed significant changes on 3rd postoperative day and showed recovery by 10th postoperative day. Recovery started by 3rd postoperative day and in majority of cases there was a complete recovery by 10th postoperative day.

Conclusions: Otological drilling has a significant effect on the extended high frequency hearing of normal contralateral ear. Extended high frequency audiometry till 16000 Hz is a sensitive modality for evaluation to monitor these cases on post-operative follow up.


Keywords


Extended high frequency hearing, Sensorineural hearing loss, Mastoidectomy, Microdrill

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References


Tos M, Lau T, Plate S. Sensorineural hearing loss following chronic ear surgery. Ann Otol Rhinol Laryngol. 1984;93:403-9.

Soujdin ER, Bleeker JD, Hoeksema PE, Molenaar I, Van Rooyen JP, Ritsma RI. Scanning electron microscopic study of the organ of corti in normal and sound damagedguinea pigs. Ann Otol Rhinol Laryngol. 1976;85:1-58.

Philips JI, Heyns PS, Nelson G. Rock drills used in South African mines: A comparative study of noise and vibration levels. Ann Ocuup Hyg. 2007;51:305-10.

Karatas E, Mimam MC, Ozturan O, Erdem T, Kalcioglu MT. Contralateral normal ear after mastoid surgery: evaluation by otoacoustic emissions (mastoid drilling and hearing loss). ORL J Otorhinolaryngol Relat Spec. 2007;69:18-24.

Zou J, Bretlau P, Pyykko I, Starck J, Topilla E. Sensorineural hearing loss after vibration: an animal model for evaluating prevention and treatment of inner ear hearing loss. Acta Otolaryngol. 2001;121:143-48.

Urguhart AC, Mc Intosh WA, Boinstein NP. Drill generated sensorineural hearing loss following mastoid surgery. Laryngoscope. 1992;102:689-92.

Man A, Winerman I. Does drill noise during mastoid surgery affect the contralateral ear? Am J Otolaryngol. 1985;6:334-35.

Lopes AC, Otubo KA, Basso TC, Marinelli EJI, Lauris JRP. Occupational hearing loss: Tonal audiometry X high frequencies audiometry. Int Arch Otolaryngol. 2009;3:293-302.

Singh R,Saxena RK, Varshney S. Early detection of noise induced hearing loss by using ultra high frequency audiometry. Int J Otorhinolaryngol. 2009;10(2):1-5.

Wang Y, Yang B, Li Y, Hou L, Hu Y, Han Y. Application of extended high frequency audiometry in the early diagnosis of noise induced hearing loss. Zhonghua Er Bi Yan Hou Ke Za Zhi. 2000;35(1):26-8.

Hegewald M, Heitman R, Weiderhold ML. High frequency electrostimulation hearing after mastoidectomy. Otolaryngol Head Neck Surg. 1989;100:49-56.

Goyal A, Singh PP, Vashishth A. Effect of mastoid drilling on hearing of the contralateral ear. J Laryngol Otol. 2013;127:952-6.

Baradaranfar MH, Shahbazian H, Behniafard N, Atighechi S, Dadgarnia MH, Mirvakili A, et al. The effect of drill generated noise in the contralateral healthy ear following mastoid surgery: The emphasis on hearing threshold recovery time. Noise Health. 2015;7:209-15.