Practical diastology

Figure 5 Zoomed right ventricular pressure and pulmonary artery pressure with their corresponding Doppler hepatic venous flow before (A, B) and after cardiopulmonary bypass. Note the change in the diastolic slope of the right ventricular pressure (Prv) waveform and the corresponding change in the systolic (S) to diastolic (D) ratio of the hepatic venous flow. After cardiopulmonary bypass, the regional oxygen saturation of the brain (rSO₂) was lower, but still within normal limits (60% ± 5%). With permission from Wolters Kluwer Health, Lippincott Williams and Wilkins adapt from reference[44]. HVF: Hepatic venous flow; Ppa: Pulmonary artery pressure.