Respondents were then asked to indicate their antici-pated physiological response in the hour following a fluidbolus for four common FBT indications: for hypotension, 62 respondents (44.6%) identified an ‘increase in mean arterialpressure (MAP) of 0 to 10 mmHg’ (Fig. 1); for oliguria, 25 respondents (17.9%) selected an ‘increase in urinary output