The purpose of this study is to investigate the effect of terlipressin on myocardial perfusion and renal function.
Hypothesis: Significant improvement of renal function reflected by: glomerular filtration rate (GFR), renal blood flow (RBF), excretion of salt and metabolites in the urine and related hormones and peptides in the blood. No effect on the systolic function of the heart.
Inclusion Criteria: