272: PRECISION AND CONSISTENCY OF THE PASSIVE LEG RAISE IN DETERMINING FLUID RESPONSIVENESS

Abstract

Purpose of study The passive leg raise (PLR) has been shown to be accurate in guiding fluid management by assessing changes in stroke volume. In this study we investigate the precision and consistency of determining fluid responsiveness by serial PLR using NiCOMTM (Cheetah Medical, Newton, MA). Methods used This study is a single-centre, prospective observational cohort of healthy volunteers and intensive care unit (ICU) patients who were considered for volume expansion. Fluid responsiveness was defined as increase in stroke volume index (SVI) >=10% (DELTASVI >=10%) after PLR. Three repeated measures of DELTASVI in response to PLR were determined, each 20 to 30 min apart. Precision was defined by the average deviation of DELTASVI from the mean of 3 repeated measures. Consistency was defined by DELTASVI >=10% or