Four patients had histories of cholesteatoma, none of which developed in conjunction with Armstrong tubes. One hundred sixty episodes of otorrhea were noted in 148 patients. Mean and median times to extrusion were 16.5 and 15.5 months. The mean patient age at tube placement was 33.3 months, and the median age was 23 months. Follow-up to extrusion rates were available for 756 tubes. One thousand ninety-six Armstrong tubes were placed in these patients. Results Five hundred seven consecutive patients who had Armstrong tubes placed were reviewed. Otorrhea, perforation, and cholesteatoma rates were also assessed. Main Outcome Measures Patient age, diagnosis, operative findings, and time to tube extrusion were reviewed. This study was performed to assess outcome measures and complication rates of the Armstrong beveled grommet tube.ĭesign A retrospective case series of patients who had Armstrong beveled grommet tympanostomy tubes placed over a 3 year period by two Children's Hospital of Wisconsin pediatric Otolaryngology staff. An ideal tube would be easy to insert and would extrude at a predictable interval without complications. Despite the frequency of ventilation tube placement, very few large studies have examined the outcomes of patients receiving this procedure. Objective Many different tympanostomy tubes have been developed with different sizes, shapes, compositions, and coatings.
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