Practice question

A 67-year-old woman presents to the ED with fever, confusion, hypotension (BP 82/48 mm Hg), tachycardia, and lactate 4.5 mmol/L. You suspect septic shock from pneumonia. She weighs 80 kg. According to current guidelines, what is the most appropriate initial IV crystalloid bolus volume to give within the first hours of resuscitation?