Removal of biofilm is essential for long-term ventilation tube retention

Figure 1 Exfoliated epithelium. A: Exfoliated epithelium at the vertical junction of the circular edge of the indwelling tube; B: Exfoliated epithelium cut off and cleared with an improvised miniature suction or hook.

Figure 2 Biofilm exfoliation surgery. A: Immersion of the biofilm of the ventilation tube in ofloxacin ear drops for 20-30 min; B: Under a microscope, the biofilm is cut off and cleared with a self-made miniature suction or hook; C: The reset migrated tube.

Figure 3 Retention time of the ventilation tube. The tympanostomy tube retention time of the treatment group was significantly longer than that of the control group. ^aP < 0.01.