Fig. 2From: The right ventricle: interaction with the pulmonary circulationSingle beat estimates of right ventricular–arterial coupling (Ees and Ea) using instantaneous pressure and flow measures. a Calculation of maximal isometric pulmonary arterial pressure (modified from Brimioulle et al. [43]). b Superimposition of right ventricular volume on pressures to calculate Ees and Ea for both a normal patient and one with pulmonary hypertension (PAH) (modified from Kuehne et al. [26])Back to article page