A nurse is admitting a client who has diabetic ketoacidosis. Which of the following types of continuous infusions should the nurse initiate?

A. NPH insulin: This is an intermediate-acting insulin with a delayed onset and is not appropriate for continuous infusion. It is not used in the acute management of diabetic ketoacidosis (DKA). B. 0.45% saline: Hypotonic saline may be used later in DKA management, but initial fluid resuscitation requires isotonic fluids to restore intravascular volume and improve perfusion. C. Glargine insulin: This is a long-acting insulin used for basal control and is not suitable for continuous infusion. It lacks the rapid onset and titratability needed in acute DKA treatment. D. Normal saline: Isotonic 0.9% saline is the fluid of choice for initial resuscitation in DKA to treat dehydration, improve perfusion, and stabilize blood pressure before initiating insulin therapy.