The OBJECTIVE was to evaluate the results of the developed measures for the prevention of the residual cavity in liver echinococcectomy.METODS AND MATERIALS. The patients were operated on in the surgical departments of the City Clinical Hospital ¹ 1 in Bishkek in 2017–2018. The article presents the results of observation of 95 patients operated on for liver echinococcosis without complications of biliary fistulas. The developed measures for the prevention of complications were used in the work. There were 2 groups (control and main). In the control group (63 people), organ-preserving operations were performed using traditional methods to eliminate the cavity of the fibrous capsule. In the main group (32 people), the same elimination methods were performed, but supplemented with the use of a hemostatic collagen sponge to prevent the occurrence of a residual cavity, and they also affected the area of the surgical wound with infrared irradiation to prevent inflammatory complications.RESULTS. In the control group, when performing capitonage and invagination, the residual cavity was detected in 5 patients, of which 3 developed suppuration. During pericystectomy, residual cavity and bile leakage occurred in 1 case, reactive pleurisy – in 4 cases. In the control group, the residual cavity required puncture, and in 3 patients, a second operation was performed – open drainage of the festering cavity. Thus, the occurrence of residual cavity was 9.5 %, other complications – 7.9 %. In the main group, with the use of preventive measures of capitonage and invagination, the residual cavity was detected in 2 (6.3 %) cases of small size, without the presence of exudative-inflammatory phenomena, and during pericystectomy, the occurrence of a cavity and wound complications were not detected.CONCLUSION. The application of the developed measures to prevent the occurrence of a residual cavity and inflammatory complications with the use of a hemostatic collagen sponge during capitonage and invagination made it possible to reduce the number of complications by 1.5 times. There were no complications associated with pericystectomy.