중이 수술 후의 미각 변화 (Taste Change after Middle Ear Surgery)

서지정보

· 발행기관 : 대한이비인후과학회
· 수록지 정보 : 대한이비인후-두경부외과학회지 / 52권 / 5호 / 401 ~ 406페이지
· 저자명 : 이영호, 예미경, 신임희

초록

Background and Objectives：During middle ear surgery, surgeons manipulate the chorda tympani nerve (CTN) at various degrees
and warn the post-operative taste changes to patients preoperatively. The purpose of this study is to assess how many patients
suffer from taste disturbance after surgery and the characteristics of their disease factors and surgical factors in patients
complaining of it. In addition, it was designed to evaluate the clinical availability of electrogustometry (EGM)compared with
subjective taste symptoms. Subjects and Method：One hundred thirty-one patients underwent middle ear surgery. Patients were
divided to three groups, only tympanoplasty, tympano-ossiculoplasty without mastoidectomy and tympanoplasty with mastoidectomy.
They were analysed by operative findings of CTN preserved, stretched, cut. The CTN function was measured at one day
before surgery and one month after surgery by EGM. Taste questionnaires were given to all patients before and after surgery for
one year. The results of EGM and questionnaires were compared with each other. Results：In pre-operative EGM results of
unilateral surgery, the lesion side of tongue had more elevated threshold of EGM than the contralateral side. In the post-operative
EGM, any statistical factor was not significant and EGM results was not correlated with subjective symptoms. The results of the
test questionnaraires was that thirty-three patients (25%) reported taste change. In tympanoplasty-preserved CTN group, more
patients suffered from taste change than mastoidedctomy-cut CTN group. Symptoms were decreased taste sensation, dysgeusia,
and decreased general sensation of tongue. Subjective recovery time was on the average of 2.7 months (two weeks to one year)
after surgery. Conclusion：EGM was not correlated with subjective symptoms after surgery. Iatrogenic CTN injury in advanced
middle ear infection may not cause taste disturbance. Surgeons should have efforts to preserve CTN in even mild middle ear
diseases.

영어초록

Background and Objectives：During middle ear surgery, surgeons manipulate the chorda tympani nerve (CTN) at various degrees
and warn the post-operative taste changes to patients preoperatively. The purpose of this study is to assess how many patients
suffer from taste disturbance after surgery and the characteristics of their disease factors and surgical factors in patients
complaining of it. In addition, it was designed to evaluate the clinical availability of electrogustometry (EGM)compared with
subjective taste symptoms. Subjects and Method：One hundred thirty-one patients underwent middle ear surgery. Patients were
divided to three groups, only tympanoplasty, tympano-ossiculoplasty without mastoidectomy and tympanoplasty with mastoidectomy.
They were analysed by operative findings of CTN preserved, stretched, cut. The CTN function was measured at one day
before surgery and one month after surgery by EGM. Taste questionnaires were given to all patients before and after surgery for
one year. The results of EGM and questionnaires were compared with each other. Results：In pre-operative EGM results of
unilateral surgery, the lesion side of tongue had more elevated threshold of EGM than the contralateral side. In the post-operative
EGM, any statistical factor was not significant and EGM results was not correlated with subjective symptoms. The results of the
test questionnaraires was that thirty-three patients (25%) reported taste change. In tympanoplasty-preserved CTN group, more
patients suffered from taste change than mastoidedctomy-cut CTN group. Symptoms were decreased taste sensation, dysgeusia,
and decreased general sensation of tongue. Subjective recovery time was on the average of 2.7 months (two weeks to one year)
after surgery. Conclusion：EGM was not correlated with subjective symptoms after surgery. Iatrogenic CTN injury in advanced
middle ear infection may not cause taste disturbance. Surgeons should have efforts to preserve CTN in even mild middle ear
diseases.

참고자료

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