A 25 year old primipara presents at term for delivery; her pregnancy has been uncomplicated so far, and her medical and surgical histories are unremarkable. She delivers a healthy baby vaginally, followed by the complete placenta. Prophylactic oxytocin is administered. Six hours later, she starts to complain of severe lower abdominal pain and heavy vaginal bleeding.
You realize that this would waste valuable time.
WBC/DC: 8,000/mm3 (4,600-11,000) Hb: 9.0 g/dL (11-18) Platelets: 380,000/mm3 (150,000-400,000)
INR: 1.0 (0.9 - 1.3) APTT: 28 sec (24 - 35) TT: 12 sec (12-14)
Four pints of blood are crossmatched.