The purpose of the work is to improve the results of open surgical interventions for AAA in elderly patients by changing the strategy for correcting the hemostatic system, taking into account the capabilities of digital technologies. Materials and methods. The study included 143 patients aged 60 to 80 years with an infrarenal aortic aneurysm without rupture who underwent open surgery. The patients were divided into two groups: main and control. The main group (n=95) consisted of patients who, in addition to colloid-crystalloid preparations during surgery, according to the developed strategy, already at the stage of access to the abdominal aorta, were injected with donor single-group fresh frozen plasma (FFP). The control group (n=48) included patients who received blood components (erythrocyte-containing media and FFP) only in the event of the development of massive bleeding or a clinical situation (existing blood loss), confirmed by laboratory tests. The average age of patients in the main group was 67.23 ± 0.53 years [66.18-66.28 years], in the control group (n=48) 66.31 ± 0.59 years [65.12-67.51 years]. Calculation of coagulogram parameters was carried out using an automatic analyzer of the blood coagulation system STA COMPACT (Switzerland) at all stages of the operation. The type of surgical treatment for the patients was bifurcation aorto-femoral replacement; midline laparatomy was chosen as the access. Statistics were presented as mean (μ) and standard error of the mean (μ). The significance of the differences was assessed using the Mann-Whitney test (U-test), considering values to be statistically significant at pom 9 minutes to 11.3 minutes. Going beyond 11.3 minutes indicates a tendency to develop a hypocoagulable state. 2. The introduction of a resuscitator-anesthesiologist's workstation with a built-in medical decision support system using modules, a number of parameters, including TEG, allows optimizing the monitoring system during surgery and patient management tactics regarding transfusion of red blood cell-containing media.