A nurse is caring for a client who has a new diagnosis of adrenal insufficiency. Which of the following prescriptions should the nurse anticipate from the provider?

Choice A rationale Phenytoin is an anticonvulsant used to control seizures and is not indicated for the treatment of adrenal insufficiency. Choice B rationale Calcitonin is used to treat conditions like osteoporosis and hypercalcemia, not adrenal insufficiency. Choice C rationale Buspirone is an anxiolytic used to treat anxiety disorders and is not used for adrenal insufficiency. Choice D rationale Fludrocortisone is a synthetic corticosteroid that is used to replace aldosterone in patients with adrenal insufficiency. It helps maintain sodium balance and blood pressure.