Figure 3

Loading conditions of the right ventricle in the average breath. Analysis of the single representative breath cycle. Central venous pressure was measured at the base of the c wave. (A) Inspiratory minus expiratory transmural central venous pressure (ΔCVP), P = 0.015 for level and mode. (B) Inspiratory minus expiratory transmural isvolumetric pressure (Δisovolumetric pressure), P = 0.003 for support level–ventilation mode interaction. Values presented as mean ± standard deviation. NAVA, neurally adjusted ventilator assist; NAVAal, adequate NAVA level identified by a titration procedure; NAVAhigh, 200% of the adequate NAVA level; NAVAlow, 50% of the adequate NAVA level; Pes, esophageal pressure; PSV, pressure support ventilation; PSVal, adequate level of pressure support ventilation identified on clinical grounds; PSVhigh, 150% of adequate PSV level; PSVlow, 50% of adequate PSV level.