Physiological pregnancy is accompanied by changes in local and systemic coagulation and fibrinolysis. Haemostasis interferes with the implantation of the blastocyst and placentation. It maintains optimal blood flow in the placenta, ensures prompt and adequate clotting during the labour. Disorders of haemostasis are involved in peripartum haemorrhage, gestational thromboembolism and they are considered a risk factor for unsuccessful reproduction and pregnancy complications. Prevention and treatment of bleeding/thrombosis is an essential part of the management of obstetric care.