Echocardiographic Measures of Diastolic Function Are Preload Dependent during Triggered Positive Pressure Ventilation: A Controlled Crossover Study in Healthy Subjects

Figure 3

The influence of varying levels of positive pressure ventilation on diastolic echocardiographic indices. Effects of selective increases in either positive end-expiratory pressure (PEEP), pressure support (PS), or combinations of PEEP and PS on 𝑒^′, 𝐸 and the composite ratio, 𝐸/𝑒^′, in varying positions. 𝑃 values reflect no influence of ventilator settings. n.s.: Not significant. Data are presented as median, interquartile range (box) and range (whiskers). Empty square: Horizontal position, yellow colored square: reverse-Trendelenburg position, blue colored square: Trendelenburg position.