A 22-year-old male has sustained full-thickness burns to approximately 55% of his BSA. You are appropriately managing his airway and are administering 100% oxygen. You note that the patient's heart rate is 140 beats/min and thready and his blood pressure is 78/58 mm Hg. You should:

A. deliver several 500 mL boluses of normal saline solution.
B. administer 20 mL/kg crystalloid boluses to maintain perfusion.
C. administer IV fluids based on the Parkland formula.
D. withhold IV fluid therapy until you have contacted medical control.

Answer: B. administer 20 mL/kg crystalloid boluses to maintain perfusion.