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

A. 0.45% saline. This is a hypotonic solution, which may be used later in diabetic ketoacidosis (DKA) management, but it is not appropriate for initial fluid resuscitation as it does not rapidly expand intravascular volume. B. NPH insulin. NPH is an intermediate-acting insulin and is not used for continuous infusion. In DKA, rapid insulin correction is needed, typically with a short-acting insulin like regular insulin. C. 0.9% normal saline. This isotonic fluid is the first-line choice for fluid replacement in clients with DKA. It helps restore circulating volume and correct dehydration quickly, which is a critical initial intervention. D. Glargine insulin. Glargine is a long-acting insulin and not suitable for IV infusion. DKA requires the use of short-acting insulin (e.g., regular insulin) administered via IV infusion to correct hyperglycemia and acidosis.