【摘要】　目的　 探討乳突根治術后耳內窺鏡換藥與常規換藥相比是否具有優勢。　方法　 2003年3月-2008年10月對89例共89只耳行開放式乳突根治術患者按隨機數字表法隨機分為試驗組及對照組，試驗組45例45只耳采用耳內窺鏡換藥，對照組44例44只耳常規換藥；分別觀察試驗組和對照組的干耳人數及干耳的時間，計算干耳率及干耳的平均時間。　結果　 試驗組45只耳中42只干耳，干耳率93.3％；對照組44只耳中40只干耳，干耳率90.9％。兩組比較差異無統計學意義（P gt;0.05）。試驗組42例干耳患者平均干耳時間為術后（50.8±13.4） d，對照組40例干耳患者平均干耳時間為術后（60.7±12.2） d；兩組比較，差異有統計學意義（P lt;0.001）。　結論　 中耳乳突根治術后耳內窺鏡下換藥與常規換藥相比不能顯著提高干耳率，但能有效縮短干耳時間。
【Abstract】　Objective　 To evaluate the application of otoendoscope in dressing change after mastoidectomy. 　Method　 Between March 2003 and October 2008, 89 patients (89 ears) underwent mastoidectomy in Department of Otolaryngology Head and Neck Surgery, West China Hospital of Sichuan University and in Department of Otolaryngology, Nuclear Industry 416 Hospital of Chengdu. The patients were randomly divided into two groups by simple randomization (trial group and control group). Forty-five patients in the trial group underwent the dressing change under otoendoscope, while 44 patients in the control group under the routine method. The ear drying rate and the ear drying time in the two groups were observed.　Results　 The ear drying rate was 93.3% (42 dry ears)in the trial group, and was 90.9% (40 dry ears) in the control group; the difference between the two groups was not significant (P gt;0.01). The ear drying time was (50.8±13.4) days in the trial group and was (60.7±12.2) days in the control groups; the difference between the two groups was significant (P lt;0.001).　Conclusion　 Dressing change under the otoendoscope after mastoidectomy may not improve the ear drying rate but can shorten the ear drying time.

引用本文： 李宇,鄭虹. 中耳乳突手術后治療中耳內窺鏡的應用. 華西醫學, 2011, 26(4): 565-567. doi: 復制