Drill-induced hearing loss in the nonoperated ear

Cruz, Melville J. Da; Fagan, Paul; Atlas, Marcus D.; McNeill, Celene

doi:10.1016/s0194-5998(97)70030-5

Cited by 37 publications

(44 citation statements)

References 17 publications

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“…12 Reversible drill-related outer hair cell dysfunction was seen in 16.7% of the operated ear cases. 8 The organ of Corti could be examined in its entirety with a scanning electron microscope. It was found that the drill with the lowest rpm (and highest torque) produced the highest noise intensities, which can reach levels that can be traumatic to the ears.…”

Section: How Drill-generated Acoustic Trauma Effects Hearing Functionmentioning

confidence: 99%

“…7 Noise exposure results in dysfunction of the outer hair cells, which may produce a temporary hearing loss on surgery applied or other ears. 8 Tympanoplasty can also cause a SNHL by a mechanism of acoustic trauma. Although this lesion appears to be relatively infrequent in clinical practice, its low apparent incidence is caused when clinicians fail to assess the auditory frequencies above 8,000 Hz.…”

Section: Introductionmentioning

confidence: 99%

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How Drill-Generated Acoustic Trauma effects Hearing Functions in an Ear Surgery?

Paksoy¹,

Şanli²,

Hardal³

et al. 2012

International Journal of Head and Neck Surgery

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Objective: In otology, a wide variety of devices are used that have significant noise output, both operated ear and the patient. We aimed to determine hearing damages due to drill-generated acoustic trauma in ear surgery. We want to find how degree drill-generated acoustic trauma is responsible from sensorineural hearing loss in ear surgery. Materials and methods:We designed a retrospective study about 100 patients who underwent radical or modiphied radical mastoidectomy and tympanoplasty. The audiometric testing was done both pre and postoperatively to detect any significant hearing loss in the immediate postoperative period. The data were analyzed using the Wilcoxon sign and Mann-Whitney U tests. This study proposes that hearing loss is caused by drill noise conducted to the operated ear by vibrations of temporal bone.Results: A sensorineural hearing loss soon after mastoid surgery is seen due to the noise generated by the drill. Mean pure-tone thresholds obtained was significantly more in mastoidectomy applied patients when compared to tympanoplasty . Mean bone conduction (BC) hearing levels impaired 6,6 dB in 1 kHz ,5.5 dB in 0.5 kHz , 5 dB in 4.kHz and 3.1 dB in 2 kHz in mastoidectomy groups but improved 5.5 dB in 0.5 kHz, 2.2 dB in 1 kHz , 2.7 dB in 2 kHz in tympanoplasty groups. Statistically significant differences were observed at the 0.5-1 and 4 kHz frequencies pre and postoperative in the hearing thresholds of BC changing in mastoidectomy group, however, the averages of ranks of all pre and postoperative measurement of hearing levels show differences between mastoidectomy and tympanoplasty groups was significant in statistically at independent groups (p < 0.05). Conclusion:We conclude that drill-generated noise during mastoid surgery has been incriminated as a cause of sensorineural hearing loss. Drilling during mastoid surgery may result in temporary or permanent noise-induced hearing loss. Possible noise disturbance to the inner ear can only be avoided by minimizing the duration of harmful noise exposure and carefull using burr to near the cochlear structures.

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Section: How Drill-generated Acoustic Trauma Effects Hearing Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How Drill-Generated Acoustic Trauma effects Hearing Functions in an Ear Surgery?

Paksoy¹,

Şanli²,

Hardal³

et al. 2012

International Journal of Head and Neck Surgery

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“…31 Drilling of the mastoid can temporarily affect both the ipsilateral and contralateral hearing function and contribute to HFHL. 5,12,19,36 In addition, a lower number of patients had a change in pure tone audiometry at 4 kHz compared to 8 kHz in both the ipsilateral and contralateral ears. This could be because hair cells that detect higher frequencies are damaged first, followed by damage to hair cells that detect lower frequencies.…”

Section: Discussionmentioning

confidence: 99%

“…This could be because hair cells that detect higher frequencies are damaged first, followed by damage to hair cells that detect lower frequencies. 5 Some additional mechanisms, including transient loss of cerebrospinal fluid, have been implicated in HFHL. 9,20 Similar results were also reported in asso- ciation with elective craniotomy when audiograms were performed before and after the procedure.…”

Section: Discussionmentioning

confidence: 99%

The incidence of high-frequency hearing loss after microvascular decompression for trigeminal neuralgia, glossopharyngeal neuralgia, or geniculate neuralgia

Meigh

Dasyam²,

Shankar³

et al. 2015

JNS

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S enSorineural hearing loss after microvascular decompression (MVD) has a reported incidence of 1%-23.8% when performed for trigeminal neuralgia (TGN), 1.5%-4.2% for glossopharyngeal neuralgia (GPN), and 22% for geniculate neuralgia (GN). 21,24,25,27 Because of the proximity of the cranial nerve VIII to cranial nerves decompressed during the procedure, the auditory nerve in many patients is often stretched or damaged, resulting in hearing impairment. Although sensorineural hearing loss after MVD is frequently documented and well understood, high-frequency hearing loss (HFHL) is currently not well recognized. HFHL has been recently reported after MVD for hemifacial spasm (HFS). . disclosure The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper. obJect The primary aim of this study was to evaluate the incidence and discuss the pathogenesis of high-frequency hearing loss (HFHL) after microvascular decompression (MVD) for trigeminal neuralgia (TGN), glossopharyngeal neuralgia (GPN), or geniculate neuralgia (GN). methods The authors analyzed preoperative and postoperative audiogram data and brainstem auditory evoked potentials (BAEPs) from 93 patients with TGN, 6 patients with GPN, and 8 patients with GN who underwent MVD. Differences in pure tone audiometry > 10 dB at frequencies of 0.25, 0.5, 1, 2, 4, and 8 kHz were calculated preoperatively and postoperatively for both the ipsilateral and the contralateral sides. Intraoperative monitoring records were analyzed and compared with the incidence of HFHL, which was defined as a change in pure tone audiometry > 10 dB at frequencies of 4 and 8 kHz. results The incidence of HFHL was 30.84% on the side ipsilateral to the surgery and 20.56% on the contralateral side. Of the 47 patients with HFHL, 20 had conductive hearing loss, and 2 experienced nonserviceable hearing loss after the surgery. The incidences of HFHL on the ipsilateral side at 4 and 8 kHz were 17.76% and 25.23%, respectively, and 8.41% and 15.89%, respectively, on the contralateral side. As the audiometric frequency increased, the number of patients with hearing loss increased. No significant postoperative difference was found between patients with and without HFHL in intraoperative BAEP waveforms. Sex, age, and affected side were not associated with an increase in the incidence of hearing loss. coNclusioNs High-frequency hearing loss occurred after MVD for TGN, GPN, or GN, and the greatest incidence occurred on the ipsilateral side. This hearing loss may be a result of drill-induced noise and/or transient loss of cerebrospinal fluid during the course of the procedure. Changes in intraoperative BAEP waveforms were not useful in predicting HFHL after MVD. Repeated postoperative audiological examinations may be useful in assessing the prognosis of HFHL.

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“…Noise exposure results in dysfunction of the outer hair cells, which may produce a temporary hearing loss in operating or contralateral ear. 3 This study aims to study effect of mastoid drill on bone conduction hearing levels. The present study was aimed to study the effects of mastoid drilling on hearing loss in operating ear and contralateral ear in cases of CSOM and hence to correlate the degree of hearing loss and time of exposure to mastoid drilling in cases of CSOM and to recommend various measures to reduce postoperative SNHL.…”

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confidence: 99%

A cross sectional study to assess effects of mastoid drill on hearing levels in chronic suppurative otitis media cases in a tertiary care hospital in northern Maharashtra

Patil

Khairnar

2017

Int J Otorhinolaryngol Head Neck Surg

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Background: Chronic suppurative otitis media (CSOM) is most common middle ear disease that is encountered in daily practice. It is accepted that middle ear surgery carries a small risk of sensorineural hearing loss. The present study was done to assess the effects of mastoid drilling on hearing loss in operating ear and contralateral ear in cases of CSOM. Methods: 80 patients with CSOM (with or without complications) age group 15 -60 years attended the ENT outpatient department of Government Medical College and Hospital after taking consent were selected for the study using universal sampling technique, between August 2014 to August 2016. Results: The study was conducted on 80 patients, aged between 15 to 60 years, who underwent ear surgery for CSOM at Government Medical College Hospital, from August 2014 to August 2016. We found no postoperative SNHL in 28 patients, while 52 patients (48 patients with temporary SNHL & 4 patients with permanent SNHL) had suffered from development of mild SNHL after middle ear surgery. Conclusions: Mastoid drilling used during ear surgery can cause mild sensorineural hearing loss in immediate postoperative period in operated ear.

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Drill-induced hearing loss in the nonoperated ear

Cited by 37 publications

References 17 publications

How Drill-Generated Acoustic Trauma effects Hearing Functions in an Ear Surgery?

How Drill-Generated Acoustic Trauma effects Hearing Functions in an Ear Surgery?

The incidence of high-frequency hearing loss after microvascular decompression for trigeminal neuralgia, glossopharyngeal neuralgia, or geniculate neuralgia

A cross sectional study to assess effects of mastoid drill on hearing levels in chronic suppurative otitis media cases in a tertiary care hospital in northern Maharashtra

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