A client with type 1 diabetes is taking propranolol [Inderal], acting confused, and reports weakness and feeling shaky. What must the nurse check first?

A. Renal function tests are important for overall health but are not the priority in this scenario. B. Propranolol can mask the symptoms of hypoglycemia, which is a common complication in clients with type 1 diabetes. The nurse should first check the client's blood glucose level to assess for hypoglycemia. C. While blood pressure is important, the symptoms described are more indicative of hypoglycemia. D. Serum electrolyte levels might be relevant but are not the immediate concern with the described symptoms.