The nurse suspects that a patient has appendicitis. Which of these procedures are appropriate for use when assessing for appendicitis or a perforated appendix? (Select all that apply)

A. Murphy sign: This is used to assess for gallbladder inflammation, not appendicitis. B. Shifting dullness: This is used to detect ascites, not appendicitis. C. Obturator test: This test involves flexing the patient's right hip and knee and rotating the leg internally, causing pain if the appendix is inflamed. D. Blumberg sign: This test for rebound tenderness indicates peritoneal irritation, commonly associated with appendicitis. E. Iliopsoas muscle test: This test involves extending the right leg against resistance, which can elicit pain in cases of appendicitis. F. Fluid wave: This is used to assess for ascites, not appendicitis.