The contralateral ear after translabyrinthine removal of acoustic neuromas: Is there a drill-noise generated hearing loss?

M, Tos; Trojaborg, N.; Thomsen, Jens

doi:10.1017/s0022215100110278

Cited by 54 publications

(40 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Postoperatively no cases of sensorineural hearing impairment could be demonstrated. 11 It is suggested that there is no damage in the contralateral ear exclusively due to the drill noise during the mastoid surgery. The contralateral ear has been subjected to the drill noise, but it has been spared from the surgical trauma.…”

Section: How Drill-generated Acoustic Trauma Effects Hearing Functionmentioning

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

View full text Add to dashboard Cite

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.

show abstract

Section: How Drill-generated Acoustic Trauma Effects Hearing Functionmentioning

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

View full text Add to dashboard Cite

show abstract

“…Tos et al examined the effects of drill noise after a translabyrintine approach in the contralateral ear in 50 consecutive cases, being unable to detect one single case of contralateral SNHL [6]. Vascular compromise is another possible cause of contralateral SNHL, which has been described principally in relation to cardiac surgery.…”

Section: Discussionmentioning

confidence: 99%

Contralateral Sensorineural Hearing Loss (SNHL) after Vestibular Schwannoma Surgery: Report of 4 cases

Rivas¹

2017

JOENTR

View full text Add to dashboard Cite

We performed a review of the VS operated in our institution between 2004 and 2015, finding a total of 185 cases. Four of these patients developed a contralateral SNHL after VS surgery (Table 1). They were 3 men and 1 woman, with an average tumour size of 19,5 mm (range 7,8-30mm). Three of them were operated by a retrosigmoid approach, and the other one by a translabyrinthine approach. At the time of diagnosis of the VS, 2 patients had normal hearing (pure tone average (PTA): 20 and 22 dB) and 2 has mild hearing loss (PTA: 26 and 40 dB). After surgery all patients developed a complete hearing loss in the operated ear. The median time of appearance of the contralateral SNHL was 16 months (range 2-54 months) with an average of hearing loss in the contralateral ear at the moment of diagnosis of 46dB. Moreover, 3 patients developed tinnitus in the contralateral ear and 2 of them developed also episodic vertigo. AbstractContralateral sensorineural hearing loss after vestibular schwannoma (VS) resection has been described, resulting in a severe complication, especially if hearing preservation in the operated side was not a reachable outcome. There exist several theories that would explain this complication, without any guideline of treatment established. We report four patients treated in our institution who developed a severe contralateral SNHL after surgery. After medical treatment only one patient recovered hearing (moderate SNHL) and the other 3 presented a severe SNHL. Cochlear implant was the only treatment of choice in two of them.

show abstract

“…It has been reported that sensorineural hearing loss associated with drilling does not develop even in the operated ear after tympanomastoid surgery and that further causes of possible postoperative sensorineural hearing loss should be investigated (17,18). Tos et al (19) performed translabyrinthine acoustic neuroma surgery in 50 patients and they stated that these patients did not have hearing loss in their healthy contralateral ears after the drilling process. In our study, DPOAE was used to investigate outer hair cell damage, which can develop in healthy contralateral ears due to acoustic trauma, and accordingly, the occurrence of sensorineural hearing loss could be evaluated through otoacoustic emission more safely at an early period.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Inner Ear Damage by Using Otoacoustic Emissions in Patients Who Underwent Mastoidectomy and Tympanoplasty Operations in Early Period

Özdamar

Koçak

Aydın

et al. 2015

Turk Arch Otorhinolaryngol

View full text Add to dashboard Cite

Objective: We aim to demonstrate inner ear damage caused by drilling in the early period. Healthy contralateral ears of patients who underwent mastoidectomy using drill or tympanoplasty without using drill were compared. Methods:A total of 38 patients (mastoidectomy: 22, tympanoplasty: 16) who were diagnosed as chronic otitis media and were scheduled for surgery were included. Distortion product (dp) otoacoustic emissions measurements were performed on healthy contralateral ears of patients on pre-and post-operative 1. hour, 1. day, 2. day, 3. day, and 4. day. Results:In mastoidectomy group, dp otoacoustic emission values on post-operative 1. hour, 1. day, 2. day, 3. day, and 4. day at a frequency of 4000 Hz were significantly lower than in tympanoplasty group (p<0.05). In mastoidectomy group, dp values on post-operative 1. hour, 1. day, 2. day, 3. day, and 4. day at 4000 Hz significantly decreased in comparison with pre-operative period (p<0.05). In comparison with pre-operative period, decrease in dp values on post-operative 1. hour, 1. day, and 2. day at 4000 Hz in mastoidectomy group is significantly higher than those in tympanoplasty group (p<0.05). In tympanoplasty group, dp values on post-operative 1. hour at 4000 Hz significantly decreased in comparison with pre-operative period (p<0.05). Conclusion:Drilling used in mastoidectomy operation damage healthy contralateral ears by causing acoustic trauma. This damage can be determined by otoacoustic emissions in the early period. According to our study, hearing loss is temporary and more distinct at higher frequencies. Keywords

show abstract

The contralateral ear after translabyrinthine removal of acoustic neuromas: Is there a drill-noise generated hearing loss?

Cited by 54 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?

Contralateral Sensorineural Hearing Loss (SNHL) after Vestibular Schwannoma Surgery: Report of 4 cases

Evaluation of Inner Ear Damage by Using Otoacoustic Emissions in Patients Who Underwent Mastoidectomy and Tympanoplasty Operations in Early Period

Contact Info

Product

Resources

About