The changes in the parameters of the hemostasis system in dogs older than 8 years due to surgery

The article presents the changes in the parameters of the hemostasis system in dogs older than 8 years due to surgical intervention. The comparison was made with a control group of mature dogs. In the group of old dogs after surgery, the number of platelets decreases with an increase in the average volume and a decrease in thrombocrit, the summing index of aggregation with collagen increases and the disaggregation indices with ADP and collagen decrease, antithrombin activity decreases, which contributes to an increase in thrombin concentration, accompanied by a shortening of TT and an increase in RFMK and fibrinogen. Taken together the reduction in PT and APTT with all of the above, it is reasonable to assume the presence of a hypercoagulable state in dogs older than 8 years due to surgery.