The nurse is caring for a patient recently admitted with a 50% total body surface area burn. Upon evaluating laboratory results, which result requires an immediate nursing intervention?

A. Serum potassium 6.5 mEq/L: Hyperkalemia is a life-threatening electrolyte imbalance commonly seen in burn patients due to cellular destruction and release of intracellular potassium. A potassium level of 6.5 mEq/L can precipitate dangerous cardiac dysrhythmias, including ventricular fibrillation or asystole. Immediate nursing interventions include cardiac monitoring, notifying the healthcare provider, and preparing for treatments. B. Hematocrit 52%: Elevated hematocrit reflects hemoconcentration, which is common in burn patients due to fluid shifts and plasma loss. While it indicates dehydration and ongoing fluid resuscitation needs, it is not immediately life-threatening and can be addressed with continued monitoring and IV fluids. C. Serum sodium 146 mEq/L: A sodium level slightly above normal indicates mild hypernatremia, which can occur due to fluid shifts and inadequate free water replacement. Although it requires monitoring and adjustment of fluid therapy, it does not pose the same immediate risk as hyperkalemia. D. Urine specific gravity 1.005: This value suggests dilute urine, which may indicate adequate hydration or early renal impairment. While it warrants monitoring in the context of burn resuscitation, it does not require urgent intervention compared with a dangerously high potassium level.