A P3 female who had normal vaginal delivery develops PPH. Third stage was managed actively and placenta and membranes were expelled completely. What is the first step in management?

The first step in management is to inse two 14G cannulas and sta IV fluids. Whenever there is excessive blood loss in a pregnant woman, steps are simultanously taken to identify the source of bleeding and to begin resuscitation. Is she is postpaum it is essential to identify the cause for the PPH and at least 1 and preferably more large-bore IV infusion systems are established promptly with rapid adminstration of crystalloid solutions while blood is made available. Ref: Williams Obstetrics 24th edition Pgno: 815