A nurse is caring for a client who has diabetic neuropathy of the lower extremities and has a new prescription for a heating pad. The prescription reads, "Apply to the left foot for 20 min." Which of the following actions should the nurse take?

Choice C Hemoglobin 8.6 g/dL indicates the nurse should notify the provider because it is below the normal range of 12 to 18 g/dL and suggests blood loss or anemia, which can impair oxygen delivery to tissues and affect wound healing.

Choice a is not correct because blood glucose 98 mg/dL does not indicate the nurse should notify the provider because it is within the normal range of 70 to 110 mg/dL and does not indicate hyperglycemia or hypoglycemia, which can affect recovery.

Choice b is not correct because BUN 18 mg/dL does not indicate the nurse should notify the provider because it is within the normal range of 10 to 20 mg/dL and does not indicate renal impairment or dehydration, which can affect fluid and electrolyte balance.

Choice d is not correct because potassium 3.5 mEq/L does not indicate the nurse should notify the provider because it is within the normal range of 3.5 to 5 mEq/L and does not indicate hypokalemia or hyperkalemia, which can affect cardiac function and muscle contraction.

Choice a: Placing the client in high-Fowler's position is the first action that the nurse should take because it can improve lung expansion and oxygenation, which are priority needs for a client who has a pulmonary embolism and is experiencing dyspnea.

Choice b is not correct because administering heparin to the client is not the first action that the nurse should take, but rather a subsequent action after ensuring adequate oxygenation. Heparin can prevent further clot formation and reduce the risk of complications, but it does not dissolve existing clots or improve respiratory status.

Choice c is not correct because encouraging the client to cough and deep breathe is not the first action that the nurse should take, but rather an ongoing intervention that can help mobilize secretions and prevent atelectasis. However, it may not be effective or feasible for a client who has severe dyspnea.

Choice d is not correct because obtaining the client's vital signs is not the first action that the nurse should take, but rather an assessment that can provide baseline data and monitor changes in condition. However, it does not address the immediate problem of impaired gas exchange or relieve dyspnea.