Surgical Interventions for Renal Replacement Therapy from the View of Nephrologists

Summary BACKGROUND: The number of patients with end-stage renal disease (ESRD) is increasing worldwide at a rate of approximately 5 % per year. In Austria, 6049 patients were suffering from ESRD in the year 2001, an annual rate of 1093 patients. Higher age of patients and co-morbidities are forcing nephrologists to find the optimal renal replacement therapy (RRT) and access modality for the individual patient. METHODS: For patients with ESRD needing RRT, both nephrologist and surgeon should be consulted to ensure optimal management and treatment including vascular access surgery. Patients planned for peritoneal dialysis (PD) are treated with the cooperation of a visceral surgeon. A catheter is inserted into the pelvic area to enable solution exchange. In patients who are to undergo hemodialysis (HD), nephrologists have to decide whether the cardiac condition is suitable for surgical access creation such as fistula or graft. Otherwise alternative hemodialysis devices such as a central venous catheter (CVC), or subcutaneously implantable ports (Dialock^®), have to be discussed. Access function is routinely monitored during dialysis treatment, but still remains the weak component of extracorporeal RRT responsible for 40 % of hospitalization of HD patients. RESULTS: At the dialysis unit of the University Hospital of Graz, 107 patients were under RRT (70 HD and 37 PD), and 235 patients were hemodialyzed in private units in Graz in 2001. 81 ESRD patients were newly enrolled in the chronic HD program. 131 HD accesses were created in new HD patients and patients under treatment for chronic HD. 36 patients developed HD access complications and in these patients, 181 surgical and/or radiological interventions were performed. CONCLUSIONS: In 12 % of the HD patients in Graz, access problems occurred. These patients have a high frequency of surgical and radiological interventions. Access monitoring and measurement of recirculation may help to reduce the complication rate by 38 %. Before onset of RRT, patients need special management to ensure the best dialysis modality. ESRD patients who are suffering from cardiac diseases, diabetes mellitus, or bad peripheral vascular status need a multidisciplinary approach with nephrologists, cardiologists, surgeons and radiologists working together to find the optimal access for dialysis treatment.