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  • Title: Timing for removal of tympanic ventilation tube in children.
    Author: Iwaki E, Saito T, Tsuda G, Sugimoto C, Kimura Y, Takahashi N, Fujita K, Sunaga H, Saito H.
    Journal: Auris Nasus Larynx; 1998 Dec; 25(4):361-8. PubMed ID: 9853658.
    Abstract:
    The medical records of 220 ears of 137 pediatric patients (85 male and 52 female) in which three kinds of ventilation tubes were inserted for treating otitis media with effusion (OME) were reviewed. The tubes selected were the Shepard grommet (75 ears), Goode-T (39 ears), and Paparella type II tube (106 ears). The criteria for tube placement were as follows: (1) continuous conductive hearing loss with over 25 dB air-bone gap, (2) resistance to conservative therapy for over 6 months, and (3) retracted and glue-colored tympanic membrane with type B tympanogram. The tubes that remained in place for over 18-24 months were removed intentionally in combination with a freshening of the perforation edge and tape-patch technique using Steri-Strip tape (3M) for preventing permanent eardrum perforation, because the incidence of persistent perforation became higher after long-term intubation. Shepard grommets tended to be extruded earlier, while Paparella type II tubes tended to stay longer. The OME recurrence rate decreased 12 months or more after tubal insertion. There was a tendency for the recurrence rate to decrease the longer the tube stayed in the eardrum. The number of recurrences decreased when the patient's age at the tube removal or extrusion was 7-8 years old. Adenoidectomy did not influence the recurrence rate of OME. Although the Goode-T and Paparella tube II tubes showed high perforation rates, the perforation rate after extrusion or removal of the tube was decreased by the use of the tape patch technique in combination with a freshening of the perforation edge. From these findings, it was concluded that the appropriate intubation period for the treatment of OME in children is over 12 months with the use of a long-term tube, and that if the patient's age at the time of tube insertion was below 6 years, it might be better that the removal of the tube is postponed until the patient is 8 years of age.
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