중이 환기관 탈출에 관한 연구

Background and Objectives: Tympanostomy tube replacement is common proper treatment of refractory otitis media with effusion. However, early extrusion of tympanostomy tube was commonly encountered , in spite of development of antibiotics, tube materials and operative methods. This study was performed to evaluate the factors influencing tympanostomy tube extrusion, excluding the selectable factors such as design and nature of tube, site of incision and operative methods, etc. Materials and Methods: We reviewed 214 ears of 144 patients who were opereated in the department of otolaryngology of the Kwang-ju christian hospital fom January 1994 to December 1998. Results: Tympanostomy tube extrusion rate according to placement period was 1) Children over 12 years old and adult, 49.3% was extruded within 6 months and 20.3% within 2 months, 2) Local anesthesia, 49.3% was extruded within 6 months and 20.3% within 2 months, 3) Mucoid middle ear effusion, 38.8% was extruded within 6 months and 15.2% within 2 months, 4) Previous tympanostomy tube replacement history, 73.2% was extruded within 6 months, 20.0% within 2 months, 5) Allergy, 66.6% was extruded both 6 months and 2 months, 6) Associated disease, 51.4% was extruded within 6 months, 24.1% was extruded within 2 months. Conclusion: Average duration of tympanostomy tube placement time was 9.09 (±5.88) months. Positive correlations for early extrusion of tube were found in (1) age over 12 years, (2) local anesthesia and (3) allergy. Statistically significance of early extrusion was seen in (1) mucoid middle ear effusion, (2) previous tympanostomy tube replacement history and (3) associated disease. (J Clinical Otolaryngol 1999;10:184–189)