A patient presents to the emergency room complaining of vomiting with severe back and leg pain. The patient's home medications include daily oral corticosteroids. Vital signs reveal a low blood pressure and there are peaked T waves on the electrocardiogram. What is the nurse's priority intervention?

A) Start an intravenous line
B) Collect urine specimen
C) Administer antiemetic
D) Administer narcotic analgesia

The patient is exhibiting signs of adrenal insufficiency (Addison's disease) given the regular use of corticosteroids. Cortisone, hydrocortisone (Cortef), prednisone, and fludrocortisone (Florinef) are used for the treatment of adrenocorticoid deficiency. Treatment of Addisonian crisis includes administration of hydrocortisone, saline solution, and sugar (dextrose) to correct the insufficiency. The priority intervention is to start an intravenous line so that appropriate treatments may be administered. A urine specimen may be collected but is not the priority intervention. Since the patient is vomiting, administration of antiemetics or analgesia would be given through an intravenous line. The nurse should also assess for changes in the level of consciousness; so administration of analgesia may be contraindicated if any decrease in level of consciousness occurs.