Step-by-step explanation:
b. Creatinine kinase
The nurse should review the client's creatinine kinase (CK) levels. Muscle tenderness can be a potential side effect of statin medications such as rosuvastatin, which are commonly used to treat hyperlipidemia. Elevated CK levels can indicate muscle damage or breakdown, a condition known as rhabdomyolysis, which can be a serious complication of statin therapy. Monitoring CK levels can help assess for muscle-related side effects and guide further management, such as adjusting the dosage or discontinuing the medication if necessary. Reviewing other laboratory values such as white blood cell count, serum potassium, or thyroid hormone (T3 and T4) levels may be important for assessing overall health, but they are not specifically related to muscle tenderness associated with statin use.