PLE-8238

PLE-8238

A 28-year-old bus driver, with his seatbelt on, was involved in a vehicular crash with another bus. At the ER, 30 minutes after the injury, his vital signs were noted as follows: BP=130/70, PR=100/min, RR=20/min, GCS=15. His abdomen is slightly globular, with a contusion hematoma and direct tenderness at the RUQ, but no rebound tenderness. What is the most appropriate initial diagnostic procedure that will help you decide on the proper management?