A nurse is caring for a client who has diabetes and a new prescription for 14 units of regular insulin and 28 units of NPH insulin subcutaneously at breakfast daily. What is the total number of units of insulin that the nurse should prepare in the insulin syringe?

When preparing insulin from both regular (short-acting) and NPH (intermediate-acting) insulin, the nurse should add the units of both insulins together. In this case, the client is prescribed 14 units of regular insulin and 28 units of NPH insulin. The total number of units the nurse should prepare is: 14 units (regular insulin) + 28 units (NPH insulin) = 42 units.