Ultrapure dialysate and inflammatory response in haemodialysis evaluated by darbepoetin requirements--a randomized study.

BACKGROUND: Dialysate quality has been suggested to influence inflammation status in patients subject to haemodialysis (HD). The aim of this study was to compare ultrapure dialysate (UPD) vs conventional dialysate (CD) with respect to darbepoetin requirements and other inflammation markers. METHODS: A controlled prospective randomized study was carried out on 78 patients from two HD units who were treated with low-flux polyamide dialysers. Patients were assigned to two groups by using different sized blocks per unit and dialysis session. One group received CD treatment while the other was treated with UPD over 12 months. From the groups, 37 patients started treatment with CD and 41 with UPD while 31 patients ended with CD and 30 with UPD. The main variables analysed were haemoglobin (Hb) and darbepoetin dose; other variables studied were C-reactive protein (CRP), albumin, interleukin-6 (IL-6) and interleukin-1 receptor antagonist (IL-1Ra). RESULTS: No significant differences were observed between the two groups for the variables analysed. At the beginning of the study the following values of CD and UPD were assessed: Hb 11.3 and 11.3 (g/dl); darbepoetin dose: 0.49 and 0.44 (microg/kg/week); CRP: 13 and 24 (mg/l); albumin: 3.8 and 3.7 (g/dl); IL-6: 5.94 and 4.18; and IL-1Ra: 345 and 420 (ng/l), respectively. At the end of the study the values of CD and UPD were: Hb 12 and 11.9 (g/dl); darbepoetin dose: 0.47 and 0.48 (microg/kg/week); CRP: 14 and 14 (mg/l); albumin: 3.8 and 3.7 (g/dl); IL-6: 14.03 and 12.93 and IL-1Ra: 322 and 340 (ng/l). CONCLUSIONS: UPD does not improve the inflammatory status evaluated by darbepoetin requirements in conventional HD patients treated with low-flux polyamide dialyser. Further controlled studies are required to evaluate the clinical influence of UPD in HD with other low- and high-flux membranes.

Impact of end-stage renal disease care in planned dialysis start and type of renal replacement therapy--a Spanish multicentre experience.

BACKGROUND: Timely referral, preparation and initiation of dialysis remain problematic issues. The purpose of this study is to analyse the effect of chronic renal disease care and education on the mode of dialysis start (planned vs non-planned) and on the modality of renal replacement therapy (RRT). METHODS: A total of 1504 patients from 35 hospitals started RRT in 2003. Out-patient, scheduled initiation of dialysis with a permanent vascular or peritoneal access was considered planned. RESULTS: About 46% of the patients started non-planned dialysis. Of all the patients, 75% had > or =3 months of nephrological follow-up, but nearly half were never educated on dialysis options. Haemodialysis (HD) occurred in 82% and peritoneal dialysis (PD) in 18%. Planned starts were associated (all P < 0.001) with many factors: younger age, longer renal and pre-dialysis follow-up, more education on RRT and general care, more medical visits, more PD (27 vs 8%), more follow-up by specific end-stage renal disease (ESRD) units, more permanent access and better biochemical status at the start of dialysis. Some global differences were found between patients: planned vs non-planned with > or =3 months of follow-up, vs non-planned <3 months follow-up or acute non-planned and <3 months of follow-up or acute patients. HD occurred in a similar rate (92%) in patients with non-planned start, no previous follow-up or who were never educated in dialysis modality options. CONCLUSION: Although a high prevalence of nephrologic care and follow-up was provided among incident patients in dialysis, nearly half the patients did not have a planned dialysis start nor dialysis modality education. Planned start was associated with better analytical and multidisciplinary status. PD was more prevalent in planned starts and when education was given. Specific ESRD units were more likely to provide an optimal care.

Analysis of patient flow into dialysis: role of education in choice of dialysis modality.

BACKGROUND: Despite advances in predialysis care, morbidity and mortality remain high. OBJECTIVES: To analyze end-stage renal disease (ESRD) patient demographics and clinical data on education on dialysis treatment options, type of chronic renal replacement therapy (RRT), and effects of planned versus non-planned dialysis start. METHODS: 621 patients, from 24 Spanish hospitals, who started RRT in 2002. Peritoneal or vascular access at dialysis initiation was considered "planned." RESULTS: 304 (49%) patients were non-planned and half of them had prior nephrology follow-up. Of the patients with >3 months nephrology follow-up (76% of all), only half were educated on dialysis modalities. Dialysis education was associated with planned start in 73.4% versus 26% in non-educated patients (p < 0.05), shorter follow-up (55 vs 65 months, p = 0.033), more medical visits in the prior year (6.5 vs 4.4, *p < 0.001), more patients starting peritoneal dialysis (31% vs 8.3%*), and more specific follow-up by ESRD unit versus general nephrology care (63% vs 26%*). Non-planned start was associated with older age (63 vs 60.6 years, p = 0.06), fewer medical visits (4.6 vs 6.4*), less education about modality options, and greater use of hemodialysis (92% vs 75%*). Planned patients had better biochemical parameters at start of dialysis. CONCLUSION: Despite nephrology follow-up, half the patients did not have a planned dialysis start. Planned start was associated with better clinical status. More patients chose peritoneal dialysis when educated about dialysis modality options. ESRD-specific units were more likely to provide patient education.