Review Question - QID 109851

A 23-year-old woman presents to the emergency department with abdominal pain. The patient has pain in the right side of her abdomen which started yesterday and has been worsening. She has experienced a few episodes of vomiting and diarrhea during this time. The patient has a medical history of constipation which is treated with fiber supplements. Her temperature is 99.5°F (37.5°C), blood pressure is 110/68 mmHg, pulse is 110/min, respirations are 17/min, and oxygen saturation is 98% on room air. Physical exam reveals a young woman who appears to be in pain. Cardiopulmonary exam is within normal limits. Abdominal exam is notable for right lower quadrant pain that is reproducible when the left lower quadrant is palpated. The patient is given morphine. Which of the following is the most appropriate next step in management?