Post-operative Sensorineural Hearing Loss After Middle Ear Surgery

  • Ritu Sehra
  • Digvijay Singh RawatEmail author
  • Yogesh Aseri
  • Manish Tailor
  • Vipul Kumar Chaudhary
  • B. K. Singh
  • P. C. Verma
Original Article


Chronic suppurative otitis media is managed by tympanomastoid surgery often requires mastoid drilling. Sometimes patients develop sensorineural hearing loss after middle ear surgery. Objective of the study was to compare pre and post operative bone conduction thresholds after middle ear surgeries. The study was conducted on 90 patients who had undergone middle ear surgeries, 30 patients of tympanoplasty (group I), modified intact canal wall mastoidectomy and tympanoplasty type-I (group II) and modified radical mastoidectomy (group III) each ware included. Demographic and clinical data were reviewed. Duration of surgery, ossicular and middle ear status and drilling time noted. Pre operative and post operative (after 3–4 months) bone conduction thresholds were compared statistically. A value of p < 0.05 was considered statistical significant. The average pre-operative hearing loss of study group was 43.78 ± 14.22 dB. Though postoperatively mean air conduction threshold improved to 36.07 ± 13.05 dB, six patients presented with deterioration of hearing. Mastoidectomy has been performed in all six. Post-operative worsening of bone conduction was seen in three patients (13.75–21.5 dB), one patient of group II and two patients of group III developed postoperative worsening of bone conduction thresholds. Significant hearing losses may occur after tympanomastoid surgery in few patients. While we are evaluating the results besides reporting average results such individual patient should be identified.


Post-operative sensorineural hearing loss SNHL Masotidectomy Mastoid drilling 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interests.

Ethical Approval

All procedures performed in presented study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Financial Support/Grant

No financial funding received. Patients were treated free of cost under ‘MNDY (Mukhyamantri Nishulk Dava Yojana) scheme’ and Bhamashah Yojana sponsored by Government of Rajasthan.

Informed Consent Statement

Informed consent was obtained from all individual participants included in the study.


  1. 1.
    Aarhus L, Tambs K, Kvestad E, Engdahl B (2015) Childhood otitis media: a cohort study with 30-year follow-up of hearing (the HUNT study). Ear Hear 36(3):302–308CrossRefGoogle Scholar
  2. 2.
    Stromberg AK, Yin X, Olofsson A (2010) Evaluation of the usefulness of a silicone tube connected to a microphone in monitoring noise levels induced by drilling during mastoidectomy and cochleostomy. Acta Otolaryngol 130(10):1163–1168CrossRefGoogle Scholar
  3. 3.
    Banakis Hartl RM, Mattingly JK, Greene NT, Farrell NF, Gubbels SP, Tollin DJ (2017) Drill-induced cochlear injury during otologic surgery: intracochlear pressure evidence of acoustic trauma. Otol Neurotol 38(7):938–947CrossRefGoogle Scholar
  4. 4.
    Baradaranfar MH, Shahbazian H, Behniafard N, Atighechi S, Dadgarnia MH, Mirvakili A, Mollasadeghi A, Baradaranfar A (2015) The effect of drill-generated noise in the contralateral healthy ear following mastoid surgery: the emphasis on hearing threshold recovery time. Noise Health 17(77):209–215CrossRefGoogle Scholar
  5. 5.
    Prinsley P (2013) An audit of ‘dead ear’ after ear surgery. J Laryngol Otol 127(12):1177–1183CrossRefGoogle Scholar
  6. 6.
    Dalchow CV, Hagemeier KC, Muenscher A, Knecht R, Kameier F (2013) Investigation of noise levels generated by otologic drills. Eur Arch Otorhinolaryngol 270(2):505–510CrossRefGoogle Scholar
  7. 7.
    Dean AG, Sullivan KM, Soe MM. OpenEpi: open source epidemiologic statistics for public health, Version. Updated 2013/04/06
  8. 8.
    Tos M, Lau T, Plate S (1984) Sensorineural hearing loss following chronic ear surgery. Ann Otol Rhinol Laryngol 93:403–409CrossRefGoogle Scholar
  9. 9.
    Kazikdas KC, Onal K, Yildirim N (2015) Sensorineural hearing loss after ossicular manipulation and drill-generated acoustic trauma in type I tympanoplasty with and without mastoidectomy: a series of 51 cases. Ear Nose Throat J 94(9):378–398PubMedGoogle Scholar
  10. 10.
    Mudry A (2009) History of instruments used for mastoidectomy. J Laryngol Otol 123(6):583–589CrossRefGoogle Scholar
  11. 11.
    Holmquist J, Oleander R, Hallen O (1979) Peroperative drill-generated noise levels in ear surgery. Acta Otolaryngol 87(5–6):458–460CrossRefGoogle Scholar
  12. 12.
    Prasad KR, Reddy KT (2003) Live recordings of sound levels during the use of powered instruments in ENT surgery. J Laryngol Otol 117(7):532–535CrossRefGoogle Scholar
  13. 13.
    Jiang D, Bibas A, Santuli C (2007) Equivalent noise level generated by drilling onto the ossicular chain as measured by laser Doppler vibrometry: a temporal bone study. Laryngoscope 117(6):1040–1045CrossRefGoogle Scholar
  14. 14.
    Sutinen P, Zou J, Hunter LL (2007) Vibration-induced hearing loss: mechanical and physiological aspects. Otol Neurotol 28(2):171–177CrossRefGoogle Scholar
  15. 15.
    Goyal A, Singh PP, Vashishth A (2013) Effect of mastoid drilling on hearing of the contralateral ear. J Laryngol Otol 127(10):952–956CrossRefGoogle Scholar
  16. 16.
    Abtahi SH, Fazel A, Rogha M, Nilforoush M, Solooki R (2016) Effect of drill-induced noise on hearing in non-operated ear. Adv Biomed Res 11(5):87. CrossRefGoogle Scholar
  17. 17.
    Vartiainen E, Seppa J (1997) Results of bone conduction following surgery for chronic ear disease. Eur Arch Otorhinolaryngol 254:384–386CrossRefGoogle Scholar
  18. 18.
    Bewick J, Prinsley P (2015) Hearing loss following myringoplasty—implications for informed consent. J Laryngol Otol 129(4):342–347CrossRefGoogle Scholar

Copyright information

© Association of Otolaryngologists of India 2018

Authors and Affiliations

  1. 1.JLN Medical College and Attached HospitalAjmerIndia

Personalised recommendations