Fig. 3From: Evaluation of end-tidal carbon dioxide gradient as a predictor of volume responsiveness in spontaneously breathing healthy adultsAmong non-responders, behavior during PLR maneuver of a ET-CO2, b VTILVOT, c HR, and d CO. ET-CO2, end-tidal carbon dioxide; VTILVOT, left ventricle outflow tract velocity time integral; HR, heat rate; CO, cardiac outputBack to article page