Uncontrolled, undetected internal bleeding, an emergency medicine “time bomb,” can kill within hours. So, when Dr. Fraser Mackay saw a young woman recently with a minor shoulder injury from a fall who seemed in an inordinate amount of pain, his gut told him something was off. She was seated in a chair in a very public, high traffic area of a Saint John, N.B., emergency department. No space for a proper assessment. Nowhere to assess her privately. Mackay decided she needed a bedside ultrasound of her abdomen. A proper ultrasound requires laying the patient down and lifting their...