[Long-term results of closed sanatory operation in patients with chronic pyo-carious epimesotympanitis in preparation to hearing-improving surgery].

Depending on the involvement of the middle ear cavities, 4 variants of sanitary operations were performed in 219 patients with chronic pyo-carious epimesotympanitis (CPCE). Morphological effect 6 months to 7 years after CPCE was assessed by 6 objective parameters of healing of the operated ear. Functional result was judged by tonal thresholds of the air-conducted sounds in combination with bone-air interval before and after the operation. Cleaning of the purulent focus was achieved in 83% of the patients. Plastic microsurgery as the second surgical stage is justified only in 51% of the patients with epithelial variant of tympanic healing. Surgical policy of the second stage is decided by correlation of the "morphological" and "functional" efficiency of closed surgery.