Final answer:
The medication that will most likely be prescribed for a patient with acute adrenal insufficiency, also known as Addison's disease, is hydrocortisone 100 mg IV every six hours until systolic BP reaches 110 mmHg.
Step-by-step explanation:
The medication that will most likely be prescribed for a patient with acute adrenal insufficiency, also known as Addison's disease, is hydrocortisone 100 mg IV every six hours until systolic BP reaches 110 mmHg. Acute adrenal insufficiency is a medical emergency caused by a deficiency of cortisol from the adrenal glands. Hydrocortisone is a glucocorticoid medication that helps replace the deficient cortisol and stabilize the patient's blood pressure.