Renal replacement therapy in Hungary: the decade of transition

The Success Story of Peritoneal Dialysis in Romania: Analysis of Differences in Mortality by Dialysis Modality and Influence of Risk Factors in a National Cohort

Background

This report describes the status of renal replacement therapy (RRT), particularly continuous ambulatory peritoneal dialysis (CAPD), in Romania (a country with previously limited facilities), outlines the fast development rate of CAPD, and presents national changes in a European context.

Methods

Trends in the development of RRT were analyzed in 2003 on a national basis using annual center questionnaires from 1995 to 2003. Survival data and prognostic risk factors were calculated retrospectively from a representative sample of 2284 patients starting RRT between 1 January 1995 and 31 December 2001 (44% of the total RRT population investigated).

Results

The annual rate of increase in the number of RRT patients (11%) was supported mainly by an exponential development of the CAPD population (+600%); the hemodialysis (HD) growth rate was stable (+33%) and renal transplantation had a marginal contribution. The characteristics of both HD and PD incident patients changed according to current European epidemiology (increasing age and prevalence of diabetes and nephroangiosclerosis). There were significant differences between PD and HD incident populations, PD patients being significantly older and having a higher prevalence of diabetic nephropathy and baseline comorbidities, probably reflecting different inclusion policies. The estimated overall survival of RRT patients in Romania was 90.6% at 1 year [confidence interval (CI) 89.4 – 91.8] and 62.2% at 5 years (CI 59.4 – 65.0). The initial treatment modality did not significantly influence patients’ survival. There was no difference in unadjusted technique survival during the first 2 years; afterwards, there was a clear advantage for HD, with more patients being transferred from PD to HD. Several factors seemed to significantly and negatively influence PD patients’ survival (Cox regression analysis): male gender, lack of predialysis erythropoietin treatment, and initial comorbidities. Stratified analysis to discover the influence of these factors on patients’ survival revealed that HD was associated with an increased risk of death in the younger nondiabetic end-stage renal disease population, regardless of other coexisting comorbid conditions. However, in older patients (>65 years) and in diabetics, regardless of the presence or absence of associated comorbid conditions, there was no significant difference in death rates between HD and PD patients.

Conclusions

We report an impressive quantitative and qualitative development of CAPD in one of the rapidly growing Central and Eastern Europe countries. CAPD should be the method of choice for young nondiabetic end-stage renal disease patients. Improvement in predialysis nephrologic care and in transplantation rates is required to further ensure the ultimate success of the Romanian PD program.

Medical comorbidities after renal transplantation

BACKGROUND

Despite the amount of evidence regarding the negative impact of medical comorbidities after transplantation, little attention has been directly paid to the pattern of somatic comorbidities in renal transplant recipients. The aim of this study was to assess the prevalence of medical comorbidities after kidney transplantation.

METHODS

In a cross-sectional study during 2006, we evaluated 119 kidney transplant recipients for somatic comorbidities by using the Ifudu comorbidity index, which evaluated the presence of 14 chronic illnesses among patients undergoing maintenance hemodialysis. Correlations of the Ifudu score with demographic and clinical data were also studied.

RESULTS

Eighty-three (90.4%) subjects had at least one medical comorbidity. The mean comorbidity score was 5.17 +/- 4.50. The most frequent comorbidities were nonischemic heart diseases including hypertension (n=75; 63%), visual disturbances (n=42; 35.2%), low back pain and spine and joint disorders (n=30; 25.21%), and musculoskeletal disorders (n=28; 23.5%). A higher comorbidity score was significantly correlated with lower economic status (P<.05), but not with age, gender, marital status, educational level, cause, or duration of end-stage renal disease.

CONCLUSION

The prevalence of medical comorbidities among kidney transplant recipients seems to be high, with the highest prevalence due to nonischemic heart diseases, visual disturbances, and musculoskeletal disorders. This highlighted the necessity of providing posttransplant care by a multidisciplinary team of specialists.

Renal transplantation in Iran over the past two decades: a trend analysis

BACKGROUND

In this study, we have reported updated statistics of the Iranian Transplantation Registry, the status of the recipients and grafts, and a detailed time trend with respect to patient characteristics.

METHODS

We retrospectively reviewed the Iranian Renal Transplantation Registry and information from the Dialysis and Transplant Patients Public Association, to obtain data on all kidney transplantations performed in Iran between 1986 and 2005. Data were gathered regarding the total number of transplantations, graft loss, recipient death, and donor and recipient characteristics, including demographic data, cause of end-stage renal disease (ESRD), and source of kidney. We assessed changes in variables on a biannual basis.

RESULTS

A total of 19521 transplantations were registered over the study period, of which, 761 recipients (3.9%) had died and 2333 allografts (11.9%) had been lost. The source of the kidney in 2556 (13%) subjects was a living related donor (LRD), in 16234 (83%) a living unrelated donor (LURD), and in 831 (4%) cadaveric. During the study decades we noted an increase in the number of kidney transplantations (from 22 to 3690), age of recipients (from 30 to 40), male-to-female ratio of recipients (from 0.58 to 0.67), male-to-female ratio of donors (from 0.48 to 0.52), diabetes mellitus (from 0% to 27%), and hypertension (from 4% to 15%), as causes of ESRD, as well as the use of cadaveric kidneys (0% to 11%).

CONCLUSION

Analyzing renal transplantation data not only helps to evaluate the effectiveness of transplantation activities in a country, but also provides information to estimate future costs in the health care system.

Are all domains of quality of life poor among elderly kidney recipients?

BACKGROUND

This study sought to answer whether all domains of HRQoL are low among elderly kidney recipients.

METHODS

A cross-sectional study of 162 renal transplanted subjects included group I (age<40 years, n=85), group II (age between 40 and 55 years, n=55), and group III (age >55 years, n=22). We compared the total score of the Short Form health survey (SF-36) and its eight subscales, including physical functioning (PF), social functioning (SF), role limitations due to physical health problems (RPh), role limitations due to emotional problems (REm), mental health (MH), vitality (VT), bodily pain (BP), and general health perceptions (GH) between the study groups.

RESULTS

As compared to groups II and I, group III, showed significantly lower scores of REm (49.12 +/- 23.22, 63.03 +/- 26.33, 64.36 +/- 26.54, P=.08), PF (48.94 +/- 27.41, 72.69 +/- 25.54, 72.14 +/- 22.79, P=.001) and SF-36 total score (46.79 +/- 10.52, 54.77 +/- 10.66, 54.09 +/- 9.35, P=.01). There were no significant differences among SF, RPh, MH, VT, and BP. Group III reported better GH than groups II and I (52.36 +/- 9.18, 48.71 +/- 12.01, 43.50 +/- 14.81, P=.020).

CONCLUSIONS

Increasing age did not result in poor health-related quality of life in all domains. The general health perception was better in the elderly, which might be due to their better coping ability.

Highlights of the epidemiology of renal replacement therapy in Central and Eastern Europe

BACKGROUND

In the past 15 years, dramatic political and economic changes have occurred in Central and Eastern Europe (CEE) which also had a positive impact on the availability of renal replacement therapy. The aim of the present study was to analyse the progress achieved in the new millennium.

METHODS

Data from 18 CEE countries collected during two independent surveys (1999 and 2002) were validated using information from national and ERA-EDTA registries, and analysed.

RESULTS

The data collected from 18 CEE countries clearly document further development and improvement of renal replacement therapy in this region of Europe. In 63% of countries, the incidence rate had become comparable with that observed in more developed European countries. The two main modalities of dialysis, i.e. haemodialysis and peritoneal dialysis, are used. The frequency of the use of PD varies between 0.5% and nearly 37%. Privatization of dialysis units has started in 18 CEE countries. Currently between 2.5% (Russia) and 90% (Hungary) of patients are treated in non-public centres. Renal transplantation is quite well developed in half of the CEE states. In the states on the territory of the former Soviet Union, substantial progress in renal replacement therapy was achieved in the Baltic states, but the development in Byelorussia and Russia is still unsatisfactory.

CONCLUSION

The availability and outcome of renal replacement therapy in the majority of states in CEE have become comparable with what is seen in more developed Western Europe. Nevertheless, large differences exist between individual countries. In particular, definite improvement is urgent in Byelorussia and Russia.

Nephrology and renal replacement therapy in Romania--transition still continues (Cinderella story revisited)

INTRODUCTION. This report describes the current status of nephrology and renal replacement therapy (RRT) in Romania, a country with previously limited facilities, highlighting national changes in the European context.

METHODS

Trends in RRT development were analysed in 2003, on a national basis, using the same questionnaires as in previous surveys (1991, 1995). Survival data and prognostic risk factors were calculated retrospectively from a large representative sample of 2284 patients starting RRT between January 1, 1995 and December 31, 2001 (44% of the total RRT population investigated).

RESULTS

In 2003, RRT incidence [128 per million population (p.m.p.)] and prevalence (250 p.m.p.) were six and five times higher, respectively, than in 1995. The annual rate of increase in the stock of RRT patients (11%) was supported mainly by an exponential development of the continuous ambulatory peritoneal dialysis (CAPD) population (+600%), while the haemodialysis (HD) growth rate was stable (+33%) and renal transplantation made a marginal contribution. Renal care infrastructure followed the same trend: nephrology departments (+100%) and nephrologists (+205%). The characteristics of RRT incident patients changed accordingly to current European epidemiology (increasing age and prevalence of diabetes and nephroangiosclerosis). The estimated overall survival of RRT patients in Romania was 90.6% at 1 year [confidence interval (CI) 89.4-91.8] and 62.2% at 5 years (CI 59.4-65.0). Patients' survival was negatively influenced (Cox regression analysis) by age >65 years (P < 0.001), lack of pre-dialysis monitoring by a nephrologist [P = 0.01, hazards ratio (HR) = 0.8], severe anaemia, lack of erythropoetin treatment (P < 0.001, HR = 0.6), and co-morbidity, e.g. cardiovascular diseases (P < 0.001, HR = 1.8) and diabetes mellitus (P < 0.001, HR = 2.2).

CONCLUSIONS

Although the rate of increase in RRT patient stock in 1996-2003 in Romania was the highest in Europe, the prevalence remained below the European mean. As CAPD had the greatest expansion, followed by HD, an effective transplantation programme must be set up to overcome the imbalance. The quality of RRT appears to be good and survival was similar to that in other registries. Further evolution implies strategies of prevention, based on national surveys, supported by the Romanian Renal Registry.