Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2007
Chorda tympani injury: operative findings and postoperative symptoms.
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Michael Philip, Raut Vivek
Аннотация
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 myringoplasty/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.
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 myringoplasty/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.