Final answer:
The first treatment step for a patient with septic shock is to administer IV fluids to increase intravascular volume, followed by antibiotics to treat the underlying infection.
Step-by-step explanation:
When caring for a patient with septic shock, the healthcare provider should prioritize treatments that address the immediate life-threatening issues. The initial step in managing septic shock involves administering IV fluids to increase intravascular volume. This is critical to combat the hypoperfusion and provide vital organ support. After stabilizing the patient's hemodynamics, appropriate antibiotics should be given to treat the underlying infection. Vasopressors and corticosteroids may be considered in the subsequent management based on the patient's response to initial therapies and ongoing clinical assessment.