Overview of the clinical course. The patient's VS were normal at presentation; however, his SpO2 decreased following upper airway obstruction, and he was intubated. After intubation, the bleeding did not subside; therefore, andexanet was infused. VS, vital signs; SpO2, percutaneous oxygen saturation; RR, Respiratory Rate; BP, Blood Pressure; HR, Heart Rate; GCS, Glasgow Coma Scale; ED, Emergency Department; CT, Computed Tomography; ICU, Intensive Care Unit.