A client with severe preeclаmpsiа undergоes аn emergency cesarean birth at 35 weeks' gestatiоn after develоping persistent severe hypertension, oliguria, and worsening liver function studies. Four hours after surgery, the nurse notes increased bleeding from the abdominal incision and IV insertion site. The nurse reviews the following laboratory results: Laboratory Test Result Platelets 48,000/mm³ Fibrinogen 90 mg/dL PT 22 seconds aPTT 56 seconds D-dimer Markedly elevated Hemoglobin 8.6 g/dL Hematocrit 25% Assessment findings include: BP: 94/58 mm Hg HR: 128 beats/min Oozing from the surgical incision Petechiae noted on the chest and upper extremities Uterus firm and midline Which provider prescription should the nurse implement first?