干旱区生态环境知识资源中心

Postoperative invectious complications in planned surgery are a pressing problem. The preoperative condition of the patient and his immune system play an important role in their development. Fifty patients of the "risk" group were selected from the standpoint of classification of the etiological factors of secondary immunodeficiency states. Fifteen patients who had no symptoms classified as SIDS risk factors formed the control group. The immune status was examined before and on the third day after the operation in all patients of the main and control groups. Various infectious complications developed after the operation in 23 patients of the risk group. No such complications occurred in the control group. The preoperative immune status of the risk group patients differed dignificantly from that of the controls in 13 of 19 parameters. The patients of the main and control groups formed the instructing selection. An expert system of preoperative clinico-immunological prognostication of postoperative infectious-inflammatory complications was created on oasis of the methods of the theory of image recognition and instructing selection. The system was tested in a direct clinical experiment on 66 patients. The prognoses were correct in 89 % of cases. It was thus proved that symptoms classified as SIDS risk factors influence the initial immunity status and the course of the postoperative period in planned surgery. An accurate, sensitive, and specific method for prognosticating postoperative infectious complications is suggested.