[Features of hemocoagulation potential, antithrombogenic properties of the vascular wall and platelet functional activity in workers of an expeditionary team].

Hemostasis was studied in 373 oilmen aged 20-40 working according to expedition schedules. Control subjects were not engaged in expeditions. Expedition labor was found to cause hypercoagulemia with parallel decline in anticoagulant activity. Vascular wall ability to release anticoagulants and fibrinolysis activators in the blood stream appeared inhibited. Platelet count in the peripheral blood, platelet aggregation, platelet factor III activity were increased. The duration of expedition service and phases of working cycle seem to affect hemostatic parameters.