How much does tympanic membrane perforation surgery need?

Conditions for tympanic membrane repair (indications): 1. The blood supply of residual tympanic membrane is good. 2. Patients have surgical requirements and no surgical contraindications. 3. Traumatic perforation of tympanic membrane, which has not healed for more than 3 months. 4. Dry perforation of tympanic membrane (there was otitis media in the past, but there was perforation in recent years) With the development of ear microsurgery and antibiotic technology, the time of ear drying and the patency of eustachian tube are no longer important issues to determine the operation. However, the hearing of patients with inner ear injury before operation will not be significantly improved. Preoperative laboratory preparation: routine hematuria, liver and kidney function, at least pure tone audiometry before CT of temporal bone, preferably using antibiotics for 3 days. Eustachian tube function examination should be a contraindication for normal operation. See common surgical contraindications. Surgery requires hospitalization. It can complete general local anesthesia, which generally needs more than 1 hour, and the operation cost is about 3000 yuan; But general anesthesia is good for nervous people, and the cost will be more.