Assessment of Volumetric Hemodynamic Parameters and Nutritional Status in Stable Renal Transplant Recipients

Inclusion Criteria: * give voluntary consent to participate in the study * functioning graft longer than 3 months to 10 years * no clinical cardiovascular disease during the 6 months preceding entry * stable graft function- glomerular filtration rate \> 30 ml/min/1.73 m2, creatinine concentration \<2.5 mg/dl * medical staff (medical doctors, nurses) Exclusion Criteria: * not meet the above criteria * episode of illness (for example: infection) * pregnancy