An 18-year-old female is brought to the emergency department by emergency medical services after being assaulted. She has sustained multiple injuries including abdominal contusions. She is alert, oriented, and complains of severe pelvic pain. Her vital signs are stable at the moment. On physical examination, there is significant bruising to the mons pubis and upper thighs, and ecchymosis of the labia majora. There is no vaginal bleeding or discharge noted. What is the most critical step for the emergency nurse to take next in the evaluation of this patient?
Obtain an abdominal and pelvic CT scan immediately.
Notify social services and law enforcement for an incident report and potential forensic examination.
Perform a chaperoned detailed pelvic examination.
Order a complete blood count (CBC) to evaluate for anemia or thrombocytopenia.