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[Hepatic and systemic hemodynamics in compensated cirrhosis--effect of posture change].

The effect of changes in body posture on estimated hepatic blood flow (EHBF) and various hemodynamic parameters was examined in 15 patients with compensated cirrhosis. EHBF and various hemodynamic parameters were first measured with the patients in the supine position, and then again 10 min after tilting to 45 degrees. EHBF was 1089 +/- 315 ml/min at supine and 1065 +/- 328 after tilting; the difference was not significant. However, the patients were then divided into two groups according to the magnitude of the decrease in EHBF after tilting, with those showing a decrease of 10% of more assigned to group B, and those showing a decrease of less than 10% assigned to group A. It was found that ICG (R15) and BSP (R45) were significantly higher in group A. Meanwhile, among hepatic and systemic hemodynamics, wedged hepatic venous pressure, hepatic venous pressure gradient, free hepatic venous pressure, cardiac index, systolic blood pressure, systemic vascular resistance, and stroke volume were found to have changed significantly after tilting. These results suggest that posture change has no effect on EHBF in compensated cirrhotic patients.