[Application of floating tube in dilation of eustachian tube under nasal endoscopy to treat post-irradiation secretory otitis media].

OBJECTIVE: To analyse the function of eustachian tube in post-irradiation secretory otitis media and investigate the curative effect of dilating eustachian tube with Swan-Gans thermodilution catheter for treating post-irradiation secretory otitis media in NPC patients. METHOD: Twenty-one (37 ears) post-irradiation secretory otitis media patients with NPC were selected in this study, by using eustachian tube function synthetic inspection facility (JK-04A model), the eustachian tube function was examined, and the obstructive eustachian tube was dilated with Swan-Gans thermodilution catheter under nasal endoscopy. RESULT: The eustachian tube function in 37 ears with post-irradiation secretory otitis media reveals normal, obstructive, insufficiency and opening model was 2, 21, 8, and 6 respectively. The total curative effect of dilating eustachian tube with Swan-Gans thermodilution catheter to treat post-irradiation secretory otitis was 43.2% (16/37). CONCLUSION: The eustachian tube function in post-irradiation secretory otitis media mainly reveals obstructive disturbance. The application of Swan-Gans thermodilution catheter in dilation of obstructive eustachian tube under nasal endoscopy will increase the curability of post-irradiation secretory otitis media.

[The damaged types of eustachian tube function in the patients of nasopharyngeal carcinoma after radiotherapy].

OBJECTIVE: To study the types and the influences of eustachian tube function disorder in the patients of nasopharyngeal carcinoma(NPC) after radiotherapy. METHOD: Thirty-two patients of NPC (50 ears) that the eustachian tube function were damaged after radiotherapy were examined by general examination, audiometer test, tympanometry, Tubo-tymanoaerodynamic grapy (TTAG), sonotubometry and endoscope. RESULT: Two cases (4 ears) showed abnormal patency of eustachian tube, the patients' symptoms were lightly. The eustachian tube adhesion were found in five patients(7 ears), and 17 patients(27 ears) showed eustachian tube complete obstruction, eight patients (12 ears) showed eustachian tube uncompleted obstruction, they had the similitude symptoms. CONCLUSION: The damaged types of eustachian tube function in patients of NPC after radiotherapy are different, it will harm the ear function. Finding it out will help to choose the treating measures.