When managing septic shock, passive leg raising is the best test to determine if a patient is likely to respond to a fluid bolus, better than CVP lines or even bedside ultrasound. Dr Najib Ayas, Associate professor of Critical Care Medicine at the University of British Columbia, discusses shock management from the context of his Rational Clinical examination article in the September 27, 2016 issue of JAMA, entitled "Will This Hemodynamically Unstable Patient Respond to a Bolus of Intravenous Fluids?"