[Postoperative morbidity of graft tympanic membrane in tympanoplasty and the relevant factors].

OBJECTIVE: To investigate the morbidity and configuration of graft (temporalis fascia) tympanic membrane as well as their pertinent factors in different stages after tympanoplasty so as to find out the measures to improve the graft morbidity. METHOD: 120 ears undergone tympanoplasty with medial graft techniques were observed. The postoperative grafts were followed up in 2 weeks, 1-3 months, 4-6 months, 6-24 months and over 2 years respectively. The pertinent factors influencing the grafts growths and its functions were analyzed. RESULT: There were 4 grafts occurred crannies after 2 weeks, 2 cases occured infection in middle ear and had reperforation after 1-3 months, 24 cases with catheterization were found ineffective after 4-6 months and 13 grafts were found atrophy after 6 months to 2 years followed up after operation respectively. There were total 10 (8.33%) ears developed perforation again in 2 years. CONCLUSION: The cranny in anterioinferior border of the grafts is one of the main risky factor for the reperforation in new tympanic membrane in the early stage. The cases with severe pathosis in mucosa in tympanic cavity should be followed up intimately. Eustachian catheterization was one of the effective methods to the tubal dysfunction. The graft tympanic membrane function and configuration will become stabilized in three months postoperatively.