scholarly journals An Incidental Chorda Tympani Schwannoma Identified During Middle Ear Surgery

2021 ◽  
Vol 59 (3) ◽  
pp. 234-238
Author(s):  
Kasım Durmuş ◽  
Murat Öztürk ◽  
Büşra Yaprak Bayrak ◽  
Çiğdem Vural
Keyword(s):  
Middle Ear ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Ear Surgery

scholarly journals Cutting the chorda tympani: not just a matter of taste

2010 ◽  
Vol 124 (9) ◽  
pp. 999-1002 ◽  
Author(s):  
N Guinand ◽  
T Just ◽  
N W Stow ◽  
H Cao Van ◽  
B N Landis
Keyword(s):  
Middle Ear ◽  
Tertiary Care ◽  
Case Series ◽  
Salivary Flow ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Tertiary Care Centre ◽  
Ear Surgery ◽  
Salivary Function ◽  
History Of

AbstractIntroduction:Chorda tympani injury as a complication of middle-ear surgery has been extensively studied with regard to its effects upon taste. However, the chorda tympani also carries parasympathetic fibres to the salivary glands of the oral cavity. To date, little has been reported about the effect of chorda tympani section upon salivary function.Setting:Tertiary care centre.Material and methods:We report a case series of three patients with bilateral chorda tympani lesions. Chorda tympani function was assessed using ‘taste strips’ and unstimulated sialometry. A careful history of oral symptoms was taken.Results:All patients showed transient or permanent bilateral ageusia of the anterior two-thirds of the tongue, and a decreased resting salivary flow rate. In addition, all patients suffered from transient or persistent, distressing xerostomia.Conclusion:Taste disorders may occur after middle-ear surgery but they are mostly transient, even when the chorda tympani nerves are sectioned bilaterally. In contrast, bilateral chorda tympani lesions may lead to severe, persistent and distressing xerostomia. Based on this neglected aspect of chorda tympani function, we emphasise the importance of preserving the chorda tympani whenever possible.

Low-Entry-Point Method for Chorda Tympani Nerve Preservation during Middle Ear Surgery

2012 ◽  
Vol 147 (5) ◽  
pp. 972-974
Author(s):  
Chien-Hao Chen ◽  
Peir-Rong Chen ◽  
Chia-Fone Lee ◽  
Lee-Ping Hsu ◽  
Yu-Fu Chou
Keyword(s):  
Middle Ear ◽  
Point Method ◽  
Entry Point ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Chorda Tympani Nerve ◽  
Ear Surgery ◽  
Nerve Preservation

scholarly journals Dysfunction of chorda tympani after middle ear surgery.

1988 ◽  
Vol 81 (2) ◽  
pp. 193-200
Author(s):  
Zenya Ito ◽  
Ryo Yuasa ◽  
Shigeru Saijo ◽  
Sachiko Tomioka ◽  
Masaru Toshima ◽  
...  
Keyword(s):  
Middle Ear ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Ear Surgery

Taste Function after Section of Chorda Tympani Nerve in Middle Ear Surgery

2004 ◽  
Vol 131 (2) ◽  
pp. P241-P241
Author(s):  
Masafumi Sakagami ◽  
Toshihiko Muto ◽  
Yasuo Mishiro ◽  
Keijiro Fukazawa ◽  
Makito Okamoto
Keyword(s):  
Middle Ear ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Chorda Tympani Nerve ◽  
Ear Surgery

A study of chorda tympani nerve injury and related symptoms following middle-ear surgery

2005 ◽  
Vol 119 (3) ◽  
pp. 189-192 ◽  
Author(s):  
P Gopalan ◽  
M Kumar ◽  
D Gupta ◽  
J J Phillipps
Keyword(s):  
Prospective Study ◽  
Middle Ear ◽  
Recovery Time ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Chorda Tympani Nerve ◽  
Ear Surgery ◽  
Number Of Patients ◽  
Prolonged Recovery ◽  
A Prospective Study

This is a prospective study that looks into the prevalence of chorda tympani nerve (CTN) injury and related symptoms following varying degrees of trauma to the nerve during three common types of middle-ear operation: myringoplasty, tympanotomy and mastoidectomy. The number of patients with CTN-related symptoms varied widely between the three groups. Increased occurrence of the nerve related symptoms and a prolonged recovery time were observed in the tympanotomy group. Stretching of the nerve produced more symptomatic cases than cutting it in the myringoplasty and mastoidectomy groups. Recovery was complete in 92 per cent of the symptomatic patients by 12 months. It is important to inform patients about the possibility of CTN injury during middle-ear operations, and it should also be emphasized that symptoms related to CTN injury can occur irrespective of the type of damage to the nerve.

Iatrogenic injury of the chorda tympani: a systematic review

2011 ◽  
Vol 126 (1) ◽  
pp. 8-14 ◽  
Author(s):  
L J McManus ◽  
M D Stringer ◽  
P J D Dawes
Keyword(s):  
Middle Ear ◽  
English Language ◽  
Iatrogenic Injury ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Ear Surgery ◽  
Injury Type ◽  
Patients Experience ◽  
Type Of Surgery ◽  
Language Literature

AbstractObjective:To review the currently available literature on iatrogenic injury of the adult chorda tympani.Design:Systematic literature review.MethodFive electronic databases and one search engine were used to access available English language literature on the chorda tympani, focusing on iatrogenic injury.Results:The chorda tympani is most often injured during middle-ear surgery, after which at least 15–22 per cent of patients experience symptoms, mostly changes in taste and dryness of the mouth. Numerous factors influence whether injury to the chorda tympani causes symptoms, including the extent of injury, type of surgery, age of the patient, anatomical variables and subjective adaptation. Although most patients experience gradual symptomatic recovery, complaints can be persistent and troublesome.Conclusion:Care should be taken to preserve the chorda tympani during middle-ear surgery, and to warn patients pre-operatively about this potential complication. This is particularly important if surgery is bilateral.

Gustatory changes in patients with chronic otitis media, before and after middle-ear surgery

2012 ◽  
Vol 126 (5) ◽  
pp. 470-474 ◽  
Author(s):  
C-C Huang ◽  
C-D Lin ◽  
C-Y Wang ◽  
J-H Chen ◽  
Y-T Shiao ◽  
...  
Keyword(s):  
Otitis Media ◽  
Middle Ear ◽  
Chronic Otitis Media ◽  
Middle Ear Surgery ◽  
Chorda Tympani ◽  
Chorda Tympani Nerve ◽  
Ear Surgery ◽  
Taste Testing ◽  
Gustatory Function ◽  
Before And After

AbstractObjective:We investigated gustatory changes in patients with chronic otitis media, before and after middle-ear surgery.Methods:This prospective study included 38 patients with unilateral chronic otitis media. We used taste testing solutions to evaluate each patient's taste function. Intra-operative assessments of the chorda tympani nerve were also compared and analysed.Results:Patients with chronic otitis media had significantly worse ipsilateral perception of sour, bitter and salty tastes. In patients with good intra-operative preservation of the chorda tympani nerve, there was significant improvement in gustatory function one month post-operatively, compared with the pre-operative baseline. In patients who sustained intra-operative chorda tympani nerve injury, one month post-operative gustatory function was the same as the pre-operative baseline.Conclusion:Middle-ear surgery for chronic otitis media not only treats the ear but also improves gustatory function in the majority of patients. In patients with intra-operative injury to the chorda tympani nerve, post-operative taste decline is only temporary.

Chemical, Electrical and Tactile Sensitivity Changes After Middle Ear Surgery

2020 ◽  
Vol 129 (6) ◽  
pp. 572-577
Author(s):  
Robert Pellegrino ◽  
Thomas Hummel
Keyword(s):  
Middle Ear ◽  
Middle Ear Surgery ◽  
Tactile Sensitivity ◽  
Chorda Tympani ◽  
Ear Surgery ◽  
Taste Response ◽  
Point Pressure ◽  
Sensitivity Changes ◽  
Over Time

Objective/Hypothesis: Taste disturbances are often seen in patients after middle ear surgery due to the stress received by an unprotected chorda tympani. It has also been reported that loss in tactile sensitivity may accompany this issue. The current study was designed to measure electrical, chemical, and tactile sensitives of several senses involved in oral processing, smell, taste and touch, over time. Study Design: Prospective cohort study. Methods: For three time points, one before middle ear surgery and two after operation (about 5 and 23 days), sensitivity thresholds were obtained using electrogustometry (electrical taste), taste strips (chemical taste), Sniffin’ Sticks (smell) and Von Frey Hairs (point-pressure tactile sensitivity). Results: The results show a decline in both chemical and electrical taste responses. Additionally, the electrical taste response showed more sensitivity to deviations and no sign of recovery unlike the chemical taste response. Mechanosensory function of the anterior tongue and olfactory function was not strongly affected by middle ear surgery. Conclusion: Taste responses, but not mechanosensory or olfaction function, are altered after middle ear surgery. Due to the effects that taste loss has on quality of life, gustometry is recommended for this group of patients. Levels of Evidence: 4

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