Brazilian Journal of Otorhinolaryngology (Sep 2018)

Endoscopic observation of different repair patterns in human traumatic tympanic membrane perforations

  • Peng Huang,
  • Shujun Zhang,
  • Xinhong Gong,
  • Xuesong Wang,
  • Zi-Han Lou

Journal volume & issue
Vol. 84, no. 5
pp. 545 – 552

Abstract

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Introduction: In the last decade, there has been an increasing use of biomaterial patches in the regeneration of traumatic tympanic membrane perforations. The major advantages of biomaterial patches are to provisionally restore the physiological function of the middle ear, thereby immediately improving ear symptoms, and act as a scaffold for epithelium migration. However, whether there are additional biological effects on eardrum regeneration is unclear for biological material patching in the clinic. Objective: This study evaluated the healing response for different repair patterns in human traumatic tympanic membrane perforations by endoscopic observation. Methods: In total, 114 patients with traumatic tympanic membrane perforations were allocated sequentially to two groups: the spontaneous healing group (n = 57) and Gelfoam patch-treated group (n = 57). The closure rate, closure time, and rate of otorrhea were compared between the groups at 3 months. Results: Ultimately, 107 patients were analyzed in the two groups (52 patients in the spontaneous healing group vs. 55 patients in the Gelfoam patch-treated group). The overall closure rate at the end of the 3 month follow-up period was 90.4% in the spontaneous healing group and 94.5% in the Gelfoam patch-treated group; the difference was not statistically significant (p > 0.05). However, the total average closure time was significantly different between the two groups (26.8 ± 9.1 days in the spontaneous healing group vs. 14.7 ± 9.1 days in the Gelfoam patch-treated group, p 0,05). No entanto, o tempo total médio de fechamento foi significativamente diferente entre os dois grupos (26,8 ± 9,1 dias no de cicatrização espontânea versus 14,7 ± 9,1 dias no tratado com esponja de Gelfoam, p < 0,01). Além disso, a velocidade de fechamento não foi significativamente diferente entre o grupo de cicatrização espontânea e o grupo tratado com esponja de Gelfoam, independentemente do tamanho da perfuração. O tempo de fechamento no grupo tratado com esponjas de Gelfoam foi significativamente menor do que no grupo de cicatrização espontânea, independentemente do tamanho da perfuração (pequenas perfurações: 7,1 ± 1,6 dias vs. 12,6 ± 3,9, perfurações de tamanho médio: 13,3 ± 2,2 dias vs. 21,8 ± 4,2 dias e grandes perfurações: 21,2 ± 4,7 dias vs. 38,4 ± 5,7 dias; p < 0,01). Conclusão: Na regeneração de PMT traumáticas, a esponja de Gelfoam não só desempenha um papel de estrutura à migração epitelial, mas também promove edema e hiperplasia de tecido de granulação nas bordas da perfuração e acelera a cicatrização do tímpano. Keywords: Tympanic membrane perforation, Trauma, Epithelial cell, Granulation tissue, Endoscope, Palavras-chave: Perfuração da membrana timpânica, Trauma, Célula epitelial, Tecido de granulação, Endoscópio