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Introduction and Objectives: There is currently no registry that gives a complete and overall view of the peritoneal dialysis (PD) situation in Spain. However, a report on PD in Spain was developed for various conferences and meetings over several years from data provided by each registry in the autonomous communities and regions. The main objective of this study is to analyse this data in aggregate and comparatively to obtain a representative sample of the Spanish population on PD in recent years, in order that analysis and results in terms of demographic data, penetration of the technique, geographical differences, incidence and prevalence, technical aspects, intermediate indicators, comorbidity, and outcomes such as patient and technique survival may be extrapolated to the whole country. DESIGN, MATERIAL AND METHOD: Observational cohort study of autonomous PD registries, covering the largest possible percentage of the adult Spanish population (over 14 years of age) on PD, at least in the last decade (1999-2010), and in the largest possible geographical area in which we were able to recruit. A precise data collection strategy was followed for each regional registry. Once the information was received and clarified, they were added as aggregate data for statistical study., Results: The regional registries that participated represent a total geographical area that encompasses 32,853,251 inhabitants over 14 years of age, 84% of the total Spanish population older than that age. The mean annual rate of incidents per million inhabitants (ppm) was variable (between 17.81 ppm in Andalusia and 29.90 ppm in the Basque Country), with a discrete and permanent increase in the overall PD incidence in Spain being observed in recent years. The mean annual prevalence per million population (ppm) was very heterogeneous (from 42 to 99 ppm). A mean progressive increase in the use of automated peritoneal dialysis (APD) was observed. The peritonitis rate was approximately one episode every 25-30 months/patient, with a slight decrease being observed in recent years. The causes of discontinuing PD were distributed fairly evenly between communities; almost a third was due to patient death (mean 28%), a third was due to renal transplantation (mean 39%) and a third was due to transfer to haemodialysis (technique failure: mean 32%). The main comorbidities were cardiovascular disease (30.2%) and diabetes mellitus (24.2%). The overall accumulated mean survival was 92.2%, 82.8%, 74.2%, 64.8% and 57% after one, two, three, four and five years respectively. There was significantly and independently worse survival for older patients and those with cardiovascular disease, patients with diabetes mellitus, those on continuous ambulatory peritoneal dialysis (vs. APD), those who started PD before 2004 (analysed in Andalusia and Catalonia), and patients with lower residual renal function at the start of PD (analysed in the Levante registry). Similarly, the technique survival has improved, showing a mean figure above 50% after 5 years., Conclusions: The incidence and prevalence of PD in Spain are growing moderately and in a generalised manner and continue to maintain an irregular distribution by autonomous community. Both patient and technique survival were greater than 50% after 5 years, with an improvement being observed in recent years, and are comparable to countries with better results in this treatment.

Background: At the end of the last century, level II scientific evidence supported higher survival rates for alternative haemodialysis (HD) techniques when compared with conventional HD, whose five-year life expectancy in Europe was below 40%. Our incident patients participated in an unconventional HD strategy from the year 2000, with the aim of assessing its influence on survival., Method: A cohort study on 183 incident HD patients between 2000 and 2010. At the beginning of HD, we evaluated a history of cardiovascular disease (CVD) and Charlson index (ChI). In the year 2000, we began the unconventional HD strategy that included protocols of biocompatible high flux HD, dry weight target, a schedule of three weekly five hour sessions (HD 5h x 3) and from 2003, in combination with the foregoing, we began a schedule of four hour HD sessions on alternate days including weekends (every other day dialysis: EODD) for higher risk incident patients., Results: Of the 183 incident patients in the HD programme, 84 were dialysed in the 5hx3 HD schedule and 99 in EODD. The mean age was 60.6 ± 13.8 years, 31.7% were older than 70, 43% were diabetic, with CVD sufferers at 58.5% and the mean ChI was 4.55. Survival (%) from the first to the fifth year was 92, 82, 75, 62 and 55, with a median of 5.65 years (confidence interval [CI] 4.18-7.11) and a mean of 5.4 (CI 4.75-6.1)., Conclusions: The unconventional HD strategy that we applied to incident patients in the technique resulted in good survival.

Introduction: Survival rates between haemodialysis (HD) and peritoneal dialysis (PD) are the same but the associated comorbidity factors have a great impact on mortality. In the most recent studies the prognosis for PD has improved more than that for HD, although this has not meant an increase in the use of this treatment., Objectives: To determine whether the PD has improved over time with respect to its outcomes in our community, and determine the influence of comorbidity and treatment characteristics on the final results., Methods: Incident patients undergoing DP in Andalusia between 1999 and 2010. The cohort was divided into two groups: before and after 2004., Statistics: mean ± standard deviation, frequency, chi-square test, Student's t-test, risk determination (95% confidence interval), Kaplan-Meyer, log-rank and multivariate Cox proportional hazards models., Results: 1464 incident patients undergoing DP, 537 before 2004 and 927 after 2004. The baseline characteristics of both groups (age, diabetes) were similar, although the first group had more severe cardiovascular disease and higher Charlson comorbidity index. In the second period, more automatic PD and solutions of bicarbonate and icodextrin were used. The overall survival rate for patients was 55 months median and 65 mean. Within all subgroups (age, diabetes, cardiovascular disease, technique type) there was a greater tendency towards survival in the second period (the technique type, age and diabetes were found to be statistically significant variables). Age, cardiovascular disease, diabetes mellitus and incident cases before 2004 were all independent risk factors. This latter variable lost significance as bicarbonate or icodextrin-based solutions were introduced, which were independent risk factors. Technique survival showed a median of 68 months and a mean of 73 months. Dialysis solutions and the period when the DP was initiated were independent risk factors for the technique., Conclusions: DP has shown improved results in recent years; probably the new solutions are having a positive influence. As such PD should be implemented applying the criteria of effectiveness, free choice, efficiency and PD units should be fully developed within Nephrology Departments.