CAJ | 학술논문

目的：分析开放式改良乳突根治术前后患者骨导听阈的变化趋势及影响因素。方法：收集82例COM患者（92耳）基本信息，手术前后骨导阈（500Hz，1000Hz，2000Hz，4000Hz）值，诊断、手术方式、病变程度等。通过配对T检验、方差分析和协方差分析，分析骨导听阈的变化趋势及其影响因素。结果：患者术后各频率骨导听阈均有不同程度提高（P＜0．001），高频（2000Hz、4000 Hz）骨导听阈均有5分贝以上提高，胆脂瘤型患者、病变累及后鼓室患者和同时进行鼓室成型手术的患者高频骨导听阈提高更明显。结论：鼓室成形术可以导致患者高频骨导听力损失，越近鼓室的手术表现越明显。通过低中频ABG评估COM手术对改善患者听力的程度更客观。
목적：분석개방식개량유돌근치술전후환자골도은역적변화추세급영향인소。방법：수집82례COM환자（92이）기본신식，수술전후골도역（500Hz，1000Hz，2000Hz，4000Hz）치，진단、수술방식、병변정도등。통과배대T검험、방차분석화협방차분석，분석골도은역적변화추세급기영향인소。결과：환자술후각빈솔골도은역균유불동정도제고（P＜0．001），고빈（2000Hz、4000 Hz）골도은역균유5분패이상제고，담지류형환자、병변루급후고실환자화동시진행고실성형수술적환자고빈골도은역제고경명현。결론：고실성형술가이도치환자고빈골도은력손실，월근고실적수술표현월명현。통과저중빈ABG평고COM수술대개선환자은력적정도경객관。
Objectives:To analyze changes of bone conduction threshold ( BC) , and it's impact factors before and after open modified radical mastoidectomy surgery.Methods:Collected 82 COM patients'(92 ears) basic information, BC (500Hz, 1000Hz, 2000Hz, 4000Hz) value before and after operation, and the diagnosis, the operation modes, the lesion severity of COM, and so on.We used the paired T-test, variance analysis , and covariance analysis to analyze the change trend and the impact factors of BC .Results:After surger-y, the BCs at all frequency increased (P<0.001), and BCs at high frequency (2000Hz, 4000Hz) increased more than 5 dB.The pa-tients who diagnosed as cholesteatoma , or implemented tympanic cavity forming operations , had more BCs increasing at high frequency .. Conclusion:tympanoplasty can lead to bone conduction hearing loss at high frequency .Through ABGs at low or medium frequency to eval-uating the degree of hearing improvement on patients after tympanoplasty are much more objective .