Case study B: Woman with traumatic limb laceration A 32-year-old woman was commuting to work on her bike with earphones in and talking on the phone. She was distracted and didn’t see a car that turned left in front of her. The two collided and she was thrown 15 feet with the rim of her bike causing a severe laceration of the right leg. She was unconscious for a few minutes as witnesses called 911, redirected traffic, and attempted to apply pressure to the effected leg. When EMS arrived approximately 10 minutes later, they estimated she had lost approximately 2 units of blood at the scene. They started an IV of normal saline and morphine for pain. She was transported to the local ED and in the end, had lost about 4 units of blood prior to effective closure of the wound. She received several hundred milliliters of normal saline during the procedure. Postsurgical clinical data are as follows: vital signs lying down, HR 120, BP 94/60, RR 28; sitting, HR 140, BP 82/62, RR 30; Het 22, hemoglobin 8, PaO2 90, SaO2 98% breathing room air. She continues to have significant oozing from her sutured wound postoperatively, prompting her physician to order a coagulation screen: platelet count 250,000, bleeding time more than 10 min, PT and aPTT within normal ranges. 1. In view of her history and vital signs, do you think she is hypovolemic? Support your conclusion.