Colleras obstruidas: ？Qué hacer? Un modelo experimentalex vivo

introduction: blocked tympanostomy tubes (tt) are an uncommon event, but avoids the effectiveness of this device in middle ear ventilation. many topical treatment options are available for this clinical situation, however, reports in literature show conflicting results. aim: analyze the effectiveness of various topical treatments to open blood clot blocked tt. material and method: ex vivo experimental model. 184 blood clot blocked tt. topical treatment, 8 experimental groups (3% hydrogen peroxide, 5% acetic acid, 0,3% ciprofloxacin, vinegar, heparin, mixture 1:1 h2o2/acetate, 0.9% saline) and 2 control group (no treatment). review of tube permeability at 3, 7 and 10 days of treatment. results: h2o2 is the most effective treatment (88% & 92% effectiveness at 7 & 10 days). ciprofloxacin, vinegar, saline and heparin are ineffective, with no statistical differences with control group. ciprofloxacin and saline even blocked previously opened tt. conclusions: h2o2 is a safe, effective and economic treatment to clear blood clot blocked tt.