A nurse is monitoring a client who has a cast on her right ankle following an open reduction and internal fixation procedure. The nurse should monitor for which of the following findings to identify compartment syndrome?

A. Pain unrelieved by routine medications: Rationale: This is a hallmark symptom of compartment syndrome, which is a surgical emergency. The pain is often out of proportion and unrelieved by analgesics. B. Elevated WBC count: Rationale: This may indicate infection but is not specific to compartment syndrome. C. Swelling and redness of the right leg: Rationale: While these may occur in compartment syndrome, they are nonspecific and can be seen in other post-op conditions like infection or DVT. D. Decreased oxygen saturation: Rationale: This is a systemic sign that may indicate respiratory compromise but is not a reliable or early indicator of compartment syndrome.