The chorda tympani degenerates during chronic otitis media: an electron microscopy study

Berling, Katarina; Mannström, Paula; Ulfendahl, Mats; Danckwardt-Lillieström, Niklas; Unge, Magnus von

doi:10.3109/00016489.2014.999875

Cited by 22 publications

(16 citation statements)

References 15 publications

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“…Regardless of the type of surgery, patient reports show that an unhealed TM resulted in a frequency of taste disturbances 1 year after surgery that was twice as high as reported for a healed TM. Chronic otitis media with perforations has been shown to often coexist with taste disturbances, and signs of inflammation in the nerve can be an explanatory factor . The idea is in agreement with the findings in this study; new taste disturbances were less frequent after a revision surgery in which the corda tympani nerve might have had previously impaired function.…”

Section: Discussionsupporting

confidence: 91%

“…Chronic otitis media with perforations has been shown to often coexist with taste disturbances, and signs of inflammation in the nerve can be an explanatory factor. 18,25 The idea is in agreement with the findings in this study; new taste disturbances were less frequent after a revision surgery in which the corda tympani nerve might have had previously impaired function. Postoperative tympanic inflammatory response might also explain the taste disturbance after fat grafting in which the nerve was not touched during the surgery.…”

Section: Taste Disturbancessupporting

confidence: 89%

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Tinnitus and taste disturbances reported after myringoplasty: Data from a national quality registry

Berglund

Suneson²,

Florentzson

et al. 2018

The Laryngoscope

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Objectives/Hypothesis Postoperative tinnitus and taste disturbances after myringoplasty are more common than previously reported. Study Design This study was a retrospective analysis of prospectively collected data from the Swedish National Quality Registry for Myringoplasty. Methods The analysis was performed on extracted data from all counties in Sweden collected from database A from 2002 to 2012 and database B from 2013 to 2016. Tinnitus and taste disturbance complications 1 year after myringoplasty were analyzed in relation to gender, age, procedure, and success rate. In database A, physicians reported tinnitus and taste disturbances. In database B, patients reported the complications. Results A major difference was found when the complications were reported by physicians compared to when the complications were reported by patients. In database A, tinnitus was reported in 1.2% of the patients and taste disturbances in 0.5%. In database B, the frequencies were 12.3% and 11.2%, respectively. Tinnitus and taste disturbances were more frequent after conventional myringoplasty compared to those after fat grafting and were more frequent after primary compared to those after revision surgery when reported by physicians. Patients, however, reported the same frequency of tinnitus after fat graft myringoplasty compared to that after conventional myringoplasty (12.0% vs. 12.6%) and fewer taste disturbances after revision surgery. In follow‐up assessments, complications persisted after surgery over a long time period. Conclusion Tinnitus and taste disturbances are more common after myringoplasty when patients report their symptoms than when physicians report the symptoms. Level of Evidence 2b Laryngoscope, 129:209–215, 2019

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Section: Discussionsupporting

confidence: 91%

Section: Taste Disturbancessupporting

confidence: 89%

Tinnitus and taste disturbances reported after myringoplasty: Data from a national quality registry

Berglund

Suneson²,

Florentzson

et al. 2018

The Laryngoscope

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show abstract

“…To date, there have been some reports concerning morphological changes of the CTN in patients with chronic otitis media. [1][2][3][4] In these reports, collected CTNs were observed by light or transmission electron microscopy. Although the relationship between morphological changes of the CTN and taste disorder was discussed, taste tests of these patients were not performed in any report.…”

Section: Introductionmentioning

confidence: 99%

Gustatory Dysfunction and Decreased Number of Fungiform Taste Buds in Patients With Chronic Otitis Media With Cholesteatoma

Saito

Ito

et al. 2016

Ann Otol Rhinol Laryngol

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“…9 As described by Saito et al ., only 39 per cent of patients with a damaged nerve complained of taste dysfunction in the post-operative period. 10 In the description of the previous literature, 11 the neural damage in the inflammatory process is often temporary, and function can be regained after the offending factor is settled (i.e. after the corrective surgery).…”

Section: Discussionmentioning

confidence: 99%

Comparison of gustatory function between mucosal and squamous disease: a randomised controlled study

2020

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Objective The aim of this study was to evaluate and compare the gustatory function between patients with chronic mucosal and squamous diseases before and after the surgery. Method A total of 33 patients with mucosal diseases and 34 patients with squamous diseases were evaluated for gustatory function both in the pre-operative and post-operative periods. The taste scores were compared between the two groups. Results The gustatory scores in the mucosal disease group were significantly better than the scores in the squamous disease group (p < 0.05). There was no significant correlation detected between the age of the patients or duration of the disease with the taste scores in any of the study groups. Conclusion The improvement in gustatory score was better in the chronic mucosal disease group than the squamous disease group. There was no significant correlation found between the age of the patients or duration of disease and the taste score in any of the study groups.

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The chorda tympani degenerates during chronic otitis media: an electron microscopy study

Abstract: For all five nerves from diseased ears, microscopy showed a higher percentage of axon and myelin sheath degeneration than in the normal controls. Furthermore, three of the five also exhibited sprouting.

Cited by 22 publications

References 15 publications

Tinnitus and taste disturbances reported after myringoplasty: Data from a national quality registry

Tinnitus and taste disturbances reported after myringoplasty: Data from a national quality registry

Gustatory Dysfunction and Decreased Number of Fungiform Taste Buds in Patients With Chronic Otitis Media With Cholesteatoma

Comparison of gustatory function between mucosal and squamous disease: a randomised controlled study

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