A restrained driver involved in a motor vehicle collision is brought to the emergency department with abdominal, pelvic, and bilateral lower extremity pain. Vital signs are BP 114/78 mm Hg, HR 98 beats/minute, RR 22 breaths/minute. A FAST exam is negative for fluid in the abdominal and peritoneal cavities. Which of the following should the nurse anticipate?

a. diagnostic peritoneal lavage
b. Angiography
c. operative management
d. serial abdominal assessments