You are called as an anaesthetist to the delivery room to the 30 years old woman in labour (V-gravida, III-para). The delivery was physiological in term, performed in epidural analgesia, common blood loss during the birth (I. stage of labour 8 hours, II. stage of labour 10 minutes), the boy was delivered (3950 g, 52 cm, Apgar score 8-10-10). At the beginning of third stage of labour strong bleeding from genitals appears, there is a blood loss of 500 mL within 5 minutes. Shortly after the delivery of the placenta, the patient is conscious, pale, tachycardic, free of signs of respiratory insufficiency. What will be your next step?