A nurse is caring for a client who has a prescription for a hypotonic IV fluid. Which of the following solutions should the nurse expect to administer?

Choice A rationale Lactated Ringer's is an isotonic solution containing electrolytes. It is typically used to replace fluid and electrolyte losses and to maintain fluid balance but does not provide a hypotonic environment. Choice B rationale 0.9% sodium chloride, also known as normal saline, is an isotonic solution. It is commonly used for fluid resuscitation and to increase intravascular volume, not suitable for creating a hypotonic effect. Choice C rationale 3% sodium chloride is a hypertonic solution, which can cause cells to shrink as water is drawn out. It is used to treat severe hyponatremia but does not provide the hypotonic effect required in this case. Choice D rationale 0.45% sodium chloride is a hypotonic solution. It helps to hydrate cells by allowing water to move into them. It is used to treat conditions that cause cellular dehydration and is appropriate for this prescription.