Chorda tympani injury: Operative findings and postoperative symptoms

Author:

Michael Philip1,Raut Vivek1

Affiliation:

1. New Cross Hospital, Wolverhampton, West Midlands, United Kingdom. Wolverhampton, West Midlands, UK

Abstract

Objectives This study aims to assess whether operative findings of chorda tympani nerve (CTN) trauma correlate with postoperative symptoms. Study Design and Setting A prospective study was conducted over 2 years on 140 middle ear operations analyzing taste disturbances. The operations were subdivided into myringo-plasty/tympanoplasty (56 cases), mastoidectomy (64 cases), and tympanotomy (20 cases). Results Twenty-one (15%) patients reported taste disturbance. Altered taste was most reported (n = 15, 71%) with loss of taste reported by 29% (n = 6). Symptoms were most observed in the tympanotomy group (45%). Stretching of the CTN was associated with more symptoms than nerve transection. Recovery was complete in 76% (n = 16) of the symptomatic cases by 12 months. Conclusion Patients who undergo middle ear surgery should be thoroughly counseled with respect to CTN injury and symptoms regardless of the type of damage to the nerve. Significance This study highlights the high incidence of postoperative alterations in taste after middle ear surgery, especially in non-diseased ears, and that CTN transection results in fewer symptoms than CTN stretching.

Publisher

SAGE Publications

Subject

Otorhinolaryngology,Surgery

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