By Sarah C.P. Williams, Staff Writer for the department of Communications & Public Affairs at the Stanford School of Medicine
One day in 2011, an ambulance pulled up to the Stanford emergency room and paramedics unloaded a man in his 30s who had crashed his motorcycle. He was in critical condition: Tests showed dangerously low blood pressure, indicating that around 40 percent of his blood was lost. And an ultrasound revealed that the blood was collecting in his belly, suggesting that one or more of his abdominal organs was the source of the blood loss.