Background. Disorder of hemostasis in hemodialysis patients is focused in two directions, towards the development of thrombosis and bleeding. Both complications make it difficult to treat and are life-threatening for the patient.  Monitoring of hemostatic parameters, it is possible to detect the first changes in the coagulation system and correct the factors that lead to changes and thus prevent or stop the further development of complications. Aim. To determine the hemostatic and dialysis parameters and their influence on the occurrence and development of complications. Patients and methods. From a total of 175 patients, 46 had signs of hemorrhagic syndrome and 16 of them had thrombosis. Parameters of primary and secondary hemostasis were determined and vascular access of ultrasound was examined. Results. In the patients with thrombosis D-dimer level was significantly higher and amounted to 4.18 mg / l, while AT III levels were decreased for 54%. Elevated level of APTT was significant for the patients who had bleeding. In 86% of patients with thrombosis, ultrasound findings correlated with findings of D-dimer. Both complications were more pronounced in the older age group above 46 years. Conclusion. Hemorrhagic syndrome is a frequent complication of thrombosis. The level of D-dimer is directly correlated with ultrasound detection of thrombotic formation. Elevated levels of APTT was in direct correlation with bleeding. The development of complica-tions are affected by other factors, such as: age, access type, type of dialysis membrane, the blood flow. Frequent control of hemostatic parameters is essential for early detection of complications. In the event of changes in coagulation system, type and dose of anticoagulant should be corrected and introducing additional oral anticoagulants should be considered.

Arterial hypertension is a common finding in patients with end stage renal disease (80% patients are hypertensive). Cardiovascular diseases are the main cause of death in haemodialysis. The present study was performed to asses' successful treatment in hypertensive chronic haemodialysis patients by ultra filtration only and ultra filtration combined with medics. We studied 80 hypertensive adult patients who had been on regular haemodialysis treatment for at least 12 months (average duration of 41 months). All subjects were divided in two different antihypertensive treatment groups including 40 subjects each. The first group of patients were treated with trandolapril and ultra filtration, and the second group of patients were only treated with ultra filtration (control group). Blood pressure measurements before and after HD sessions were performed for each patient. Blood pressure control was defined using World Health Organization criteria 140/90 mm Hg. Average systolic blood pressure levels, after haemodialysis, were in the first group of patients 146.33 +/- 9.7 mm Hg, and in the control group 157,86 +/- 10.33 mm Hg. Average diastolic blood pressure was 87.83 +/- 8.11 mm Hg in the first group of patients and, in the control group it was 91.03 +/- 10.67 mm Hg. There were significant differences between systolic blood pressure level in the first group of patients and the control group of patients as well as in diastolic blood pressure (p < 0.05). We conclude that an antihypertensive therapy by trandolapril is more effective than ultra filtration alone in hypertensive patients on chronic haemodialysis.