RESUMO
BACKGROUND: Previous studies have indicated decreased health-related quality of life (HRQoL) shortly after kidney donation, returning to baseline in the longer term. However, a subgroup of donors experiences persistent HRQoL problems. To identify which HRQoL aspects are impacted most by the donation and to identify at-risk donors, more specific insight into psychosocial donation consequences is needed. METHODS: The current study examined the HRQoL course, donor-perceived consequences of donation for donors, recipients and donor-recipient relationships, and regret up to 12 months post-donation in donors from seven Dutch transplantation centres. Kidney donor candidates (n = 588) completed self-report questionnaires early in the screening procedure, of which 361 (61%) donated their kidney. RESULTS: Data for 230 donors (64%) with complete assessments before donation and 6 and 12 months post-donation were analysed. Results indicated that donor physical HRQoL was comparable at all time points, except for an increase in fatigue that lasted up to 12 months post-donation. Mental HRQoL decreased at 6 months post-donation, but returned to baseline at 12 months. Donors reported large improvements in recipient's functioning and a smaller influence of the recipient's kidney disease or transplantation on the donor's life over time. A subgroup experienced negative donation consequences with 14% experiencing regret 12 months post-donation. Predictors of regret were more negative health perceptions and worse social functioning 6 months post-donation. The strongest baseline predictors of higher fatigue levels after donation were more pre-donation fatigue, worse general physical functioning and a younger age. CONCLUSIONS: Future research should examine predictors of HRQoL after donation to improve screening and to provide potential interventions in at-risk donors.
Assuntos
Emoções , Transplante de Rim/psicologia , Doadores Vivos/psicologia , Qualidade de Vida/psicologia , Adulto , Idoso , Fadiga , Feminino , Humanos , Relações Interpessoais , Rim/cirurgia , Transplante de Rim/métodos , Masculino , Pessoa de Meia-Idade , Nefrectomia/psicologia , Países Baixos/epidemiologia , Estudos Prospectivos , Autorrelato , Inquéritos e Questionários , Coleta de Tecidos e Órgãos , Adulto JovemRESUMO
Background Complement-fixing antibodies against donor HLA are considered a contraindication for kidney transplant. A modification of the IgG single-antigen bead (SAB) assay allows detection of anti-HLA antibodies that bind C3d. Because early humoral graft rejection is considered to be complement mediated, this SAB-based technique may provide a valuable tool in the pretransplant risk stratification of kidney transplant recipients.Methods Previously, we established that pretransplant donor-specific anti-HLA antibodies (DSAs) are associated with increased risk for long-term graft failure in complement-dependent cytotoxicity crossmatch-negative transplants. In this study, we further characterized the DSA-positive serum samples using the C3d SAB assay.Results Among 567 pretransplant DSA-positive serum samples, 97 (17%) contained at least one C3d-fixing DSA, whereas 470 (83%) had non-C3d-fixing DSA. At 10 years after transplant, patients with C3d-fixing antibodies had a death-censored, covariate-adjusted graft survival of 60%, whereas patients with non-C3d-fixing DSA had a graft survival of 64% (hazard ratio, 1.02; 95% confidence interval, 0.70 to 1.48 for C3d-fixing DSA compared with non-C3d-fixing DSA; P=0.93). Patients without DSA had a 10-year graft survival of 78%.Conclusions The C3d-fixing ability of pretransplant DSA is not associated with increased risk for graft failure.
Assuntos
Anticorpos Anti-Idiotípicos/imunologia , Complemento C3d/imunologia , Rejeição de Enxerto/imunologia , Antígenos HLA/imunologia , Transplante de Rim/efeitos adversos , Sistema de Registros , Adulto , Distribuição por Idade , Soro Antilinfocitário/imunologia , Estudos de Coortes , Feminino , Seguimentos , Rejeição de Enxerto/epidemiologia , Humanos , Incidência , Transplante de Rim/métodos , Masculino , Pessoa de Meia-Idade , Cuidados Pré-Operatórios/métodos , Estudos Retrospectivos , Medição de Risco , Distribuição por Sexo , Doadores de Tecidos , Transplantados/estatística & dados numéricos , Imunologia de TransplantesRESUMO
Background: An easy-to-use prediction model for long-term renal patient survival based on only four predictors [age, primary renal disease, sex and therapy at 90 days after the start of renal replacement therapy (RRT)] has been developed in The Netherlands. To assess the usability of this model for use in Europe, we externally validated the model in 10 European countries. Methods: Data from the European Renal Association-European Dialysis and Transplant Association (ERA-EDTA) Registry were used. Ten countries that reported individual patient data to the registry on patients starting RRT in the period 1995-2005 were included. Patients <16 years of age and/or with missing predictor variable data were excluded. The external validation of the prediction model was evaluated for the 10- (primary endpoint), 5- and 3-year survival predictions by assessing the calibration and discrimination outcomes. Results: We used a data set of 136 304 patients from 10 countries. The calibration in the large and calibration plots for 10 deciles of predicted survival probabilities showed average differences of 1.5, 3.2 and 3.4% in observed versus predicted 10-, 5- and 3-year survival, with some small variation on the country level. The concordance index, indicating the discriminatory power of the model, was 0.71 in the complete ERA-EDTA Registry cohort and varied according to country level between 0.70 and 0.75. Conclusions: A prediction model for long-term renal patient survival developed in a single country, based on only four easily available variables, has a comparably adequate performance in a wide range of other European countries.
Assuntos
Falência Renal Crônica/mortalidade , Transplante de Rim/mortalidade , Modelos Estatísticos , Sistema de Registros/estatística & dados numéricos , Terapia de Substituição Renal/mortalidade , Adolescente , Adulto , Idoso , Estudos de Coortes , Europa (Continente) , Feminino , Humanos , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Países Baixos , Prognóstico , Diálise Renal/mortalidade , Adulto JovemRESUMO
Background: Cognitions surrounding living organ donation, including the motivation to donate, expectations of donation and worries about donation, are relevant themes during living donor evaluation. However, there is no reliable psychometric instrument assessing all these different cognitions. This study developed and validated a questionnaire to assess pre-donation motivations, expectations and worries regarding donation, entitled the Donation Cognition Instrument (DCI). Methods: Psychometric properties of the DCI were examined using exploratory factor analysis for scale structure and associations with validated questionnaires for construct validity assessment. Results: From seven Dutch transplantation centres, 719 potential living kidney donors were included. The DCI distinguishes cognitions about donor benefits, recipient benefits, idealistic incentives, gratitude and worries about donation (Cronbach's alpha 0.76-0.81). Scores on pre-donation cognitions differed with regard to gender, age, marital status, religion and donation type. With regard to construct validity, the DCI was moderately correlated with expectations regarding donor's personal well-being and slightly to moderately to health-related quality of life. Conclusions: The DCI is found to be a reliable instrument assessing cognitions surrounding living organ donation, which might add to pre-donation quality of life measures in facilitating psychosocial donor evaluation by healthcare professionals.
Assuntos
Cognição , Transplante de Rim , Doadores Vivos/psicologia , Obtenção de Tecidos e Órgãos , Adulto , Idoso , Ansiedade/psicologia , Feminino , Humanos , Masculino , Estado Civil , Pessoa de Meia-Idade , Motivação , Países Baixos , Projetos Piloto , Psicometria , Qualidade de Vida , Religião , Inquéritos e Questionários , Adulto JovemRESUMO
Survival of expanded criteria donor (ECD) kidneys and their recipients has not been thoroughly evaluated in Europe. Therefore, we compared the outcome of ECD and non-ECD kidney transplantations in a Dutch cohort, stratifying by age and diabetes. In all first Dutch kidney transplants in recipients ≥18 years between 1995 and 2005, both relative risks (hazard ratios, HR) and adjusted absolute risk differences (RD) for ECD kidney transplantation were analysed. In 3062 transplantations [recipient age 49.0 (12.8) years; 20% ECD], ECD kidney transplantation was associated with graft failure including death [HR 1.62 (1.44-1.82)]. The adjusted HR was lower in recipients ≥60 years of age [1.32 (1.07-1.63)] than in recipients 40-59 years [1.71 (1.44-2.02) P = 0.12 for comparison with ≥60 years] and recipients 18-39 years [1.92 (1.42-2.62) P = 0.03 for comparison with ≥60 years]. RDs showed a similar pattern. In diabetics, the risks for graft failure and death were higher than in the nondiabetics. ECD kidney grafts have a poorer prognosis than non-ECD grafts, especially in younger recipients (<60 years), and diabetic recipients. Further studies and ethical discussions should reveal whether ECD kidneys should preferentially be allocated to specific subgroups, such as elderly and nondiabetic individuals.
Assuntos
Seleção do Doador , Sobrevivência de Enxerto , Falência Renal Crônica/mortalidade , Falência Renal Crônica/cirurgia , Transplante de Rim/métodos , Obtenção de Tecidos e Órgãos/métodos , Adolescente , Adulto , Idoso , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Países Baixos , Risco , Doadores de Tecidos , Transplantados , Resultado do Tratamento , Adulto JovemRESUMO
INTRODUCTION: Hypertension in kidney transplant recipients (KTRs) is a risk factor for cardiovascular mortality and graft loss. Data on the prevalence of hypertension and uncontrolled hypertension (uHT) in paediatric and young adult KTRs are scarce. Also, it is unknown whether 'transition' (the transfer from paediatric to adult care) influences control of hypertension. We assessed the prevalence of hypertension and uHT among Dutch paediatric and young adult KTRs and analysed the effects of transition. Additionally, we made an inventory of variations in treatment policies in Dutch transplant centres. METHODS: Cross-sectional and longitudinal national data from living KTRs ≤30 years of age (≥1-year post-transplant, eGFR >20 mL/min) were extracted from the 'RICH Q' database, which comprises information about all Dutch KTRs <19 years of age, and the Netherlands Organ Transplant Registry database for adult KTRs (≥18-30 years of age). We used both upper-limit blood pressure (BP) thresholds for treatment according to Kidney Disease: Improving Global Outcomes (KDIGO) guidelines. uHT was defined as a BP above the threshold. A questionnaire on treatment policies was sent to paediatric and adult nephrologists at eight Dutch transplant centres. RESULTS: Hypertension and uHT were more prevalent in young adult KTRs (86.4 and 75.8%) than in paediatric KTRs (62.7 and 38.3%) according to the KDIGO definition. Time after transplantation was comparable between these groups. Longitudinal analysis showed no evidence of effect of transition on systolic BP or prevalence of uHT. Policies vary considerably between and within centres on the definition of hypertension, BP measurement and antihypertensive treatment. CONCLUSION: Average BP in KTRs increases continuously with age between 6 and 30 years. Young adult KTRs have significantly more uHT than paediatric KTRs according to KDIGO guidelines. Transition does not influence the prevalence of uHT.
Assuntos
Anti-Hipertensivos/uso terapêutico , Hipertensão/epidemiologia , Transplante de Rim/efeitos adversos , Sistema de Registros , Transplantados , Adolescente , Adulto , Pressão Sanguínea/efeitos dos fármacos , Criança , Pré-Escolar , Estudos Transversais , Feminino , Humanos , Hipertensão/tratamento farmacológico , Hipertensão/etiologia , Incidência , Masculino , Países Baixos/epidemiologia , Fatores de Risco , Transição para Assistência do Adulto , Adulto JovemRESUMO
PURPOSE: To minimize cold ischemia time, transplantations with kidneys from deceased donors are frequently performed during the night. However, sleep deprivation of those who perform the transplantation may have adverse effects on cognitive and psychomotor performance and may cause reduced cognitive flexibility. We hypothesize that renal transplantations performed during the night are associated with an increased incidence of pure technical graft failure. METHODS: A retrospective analysis of data of the Dutch Organ Transplant Registry concerning all transplants from deceased donors between 2000 and 2013 was performed. Nighttime surgery was defined as the start of the procedure between 8 p.m. and 8 a.m. The primary outcome measure was technical graft failure, defined as graft loss within 10 days after surgery without signs of (hyper)acute rejection. RESULTS: Of 4.519 renal transplantations in adult recipients, 1.480 were performed during the night. The incidence of pure technical graft failure was 1.0 % for procedures started during the night versus 2.6 % for daytime surgery (p = .001). In a multivariable model, correcting for relevant donor, recipient and graft factors, daytime surgery was an independent predictor of pure technical graft failure (p < .001). CONCLUSIONS: Limitation of this study is mainly to its retrospective design, and the influence of some relevant variables, such as the experience level of the surgeon, could not be assessed. We conclude that nighttime surgery is associated with less pure technical graft failures. Further research is required to explore factors that may positively influence the performance of the surgical team during the night.
Assuntos
Plantão Médico/normas , Rejeição de Enxerto/etiologia , Transplante de Rim/métodos , Complicações Pós-Operatórias/etiologia , Feminino , Rejeição de Enxerto/epidemiologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Fatores de Tempo , Falha de TratamentoRESUMO
BACKGROUND: The lengths of right renal veins are shorter when compared to their left counterparts. Since the implantation of kidneys with short renal veins is considered more challenging, many surgeons prefer left kidneys for transplantation. Therefore, our hypothesis is that the implantation of right kidneys from living and deceased donors is associated with more technical graft failures as compared to left kidneys. METHODS: Two consecutive cohorts of adult renal allograft recipients of living (n = 4.372) and deceased (n = 5.346) donor kidneys between January 1, 2000 and January 1, 2013 were analyzed. Data were obtained from the prospectively maintained electronic database of the Dutch Organ Transplant Registry. Technical graft failure was defined as failure of the renal allograft within 10 days after renal transplantation without signs of acute rejection. RESULTS: In the living donor kidney transplantation cohort, the implantation of right donor kidneys was associated with a higher incidence of technical graft failure (multivariate analysis p = 0.03). For recipients of deceased donor kidneys, the implantation of right kidneys was not significantly associated with technique-related graft failure (multivariate analysis p = 0.16). CONCLUSIONS: Our data show that the implantation of right kidneys from living donors is associated with a higher incidence of technique-related graft failure as compared to left kidneys.
Assuntos
Sobrevivência de Enxerto , Transplante de Rim/métodos , Rim/cirurgia , Veias Renais/anatomia & histologia , Sítio Doador de Transplante/anatomia & histologia , Adulto , Feminino , Humanos , Rim/irrigação sanguínea , Transplante de Rim/efeitos adversos , Doadores Vivos , Masculino , Pessoa de Meia-Idade , Países Baixos , Tamanho do Órgão , Sistema de RegistrosRESUMO
BACKGROUND: Risk prediction models can be used to inform patients undergoing renal replacement therapy about their survival chances. Easily available predictors such as registry data are most convenient, but their predictive value may be limited. We aimed to improve a simple prediction model based on registry data by incrementally adding sets of clinical and laboratory variables. METHODS: Our data set includes 1,835 Dutch patients from the Netherlands Cooperative Study on the Adequacy of Dialysis. The potential survival predictors were categorized on availability. The first category includes easily available clinical data. The second set includes laboratory values like albumin. The most laborious category contains glomerular filtration rate (GFR) and Kt/V. Missing values were substituted using multiple imputation. Within 1,225 patients, we recalibrated the registry model and subsequently added parameter sets using multivariate Cox regression analyses with backward selection. On the other 610 patients, calibration and discrimination (C-index, integrated discrimination improvement (IDI) index and net reclassification improvement (NRI) index) were assessed for all models. RESULTS: The recalibrated registry model showed adequate calibration and discrimination (C-index=0.724). Adding easily available parameters resulted in a model with 10 predictors, with similar calibration and improved discrimination (C-index=0.784). The IDI and NRI indices confirmed this, especially for short-term survival. Adding laboratory values resulted in an alternative model with similar discrimination (C-index=0.788), and only the NRI index showed minor improvement. Adding GFR and Kt/V as candidate predictors did not result in a different model. CONCLUSION: A simple model based on registry data was enhanced by adding easily available clinical parameters.
Assuntos
Doenças Cardiovasculares/epidemiologia , Diabetes Mellitus/epidemiologia , Taxa de Filtração Glomerular , Falência Renal Crônica/mortalidade , Neoplasias/epidemiologia , Sistema de Registros , Diálise Renal/estatística & dados numéricos , Fumar/epidemiologia , Adulto , Idoso , Pressão Sanguínea , Cálcio/metabolismo , Colesterol/metabolismo , Comorbidade , Técnicas de Apoio para a Decisão , Feminino , Humanos , Avaliação de Estado de Karnofsky/estatística & dados numéricos , Falência Renal Crônica/metabolismo , Falência Renal Crônica/terapia , Transplante de Rim , Masculino , Pessoa de Meia-Idade , Modelos Teóricos , Mortalidade , Países Baixos/epidemiologia , Diálise Peritoneal/estatística & dados numéricos , Fosfatos/metabolismo , Prognóstico , Modelos de Riscos Proporcionais , Albumina Sérica/metabolismoRESUMO
As the beginning of living-donor kidney transplantation, physicians have expressed concern about the possibility that unilateral nephrectomy can be harmful to a healthy individual. To investigate whether the elevated intra-abdominal pressure (IAP) during laparoscopic donor nephrectomy causes early damage to the remaining kidney, we evaluated urine biomarkers after laparoscopic donor nephrectomy. We measured albumin and alpha-1-microglobulin (α-1-MGB) in urine samples collected during and after open and laparoscopic donor nephrectomy and laparoscopic cholecystectomy and colectomy. Additionally, kidney injury molecule 1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) were measured in urine samples collected during and after laparoscopic donor nephrectomy and colectomy. The same biomarkers were studied in patients randomly assigned to standard or low IAP during laparoscopic donor nephrectomy. We observed a peak in urinary albumin excretion during all procedures. Urine α-1-MGB rose in the postoperative period with a peak on the third postoperative day after donor nephrectomy. Urine α-1-MGB did not increase after laparoscopic cholecystectomy and colectomy. After laparoscopic nephrectomy, we observed slight increases in urine KIM-1 during surgery and in urine NGAL at day 2-3 after the procedure. After laparoscopic colectomy, both KIM-1 and NGAL were increased in the postoperative period. There were no differences between the high- and low-pressure procedure. Elevated urinary α-1-MGB suggests kidney damage after donor nephrectomy, occurring irrespective of IAP during the laparoscopic procedure.
Assuntos
alfa-Globulinas/urina , Biomarcadores/urina , Nefrectomia , Proteínas de Fase Aguda/urina , Adulto , Idoso , Albuminas/química , Colecistectomia Laparoscópica , Colectomia , Creatinina/sangue , Método Duplo-Cego , Feminino , Receptor Celular 1 do Vírus da Hepatite A , Humanos , Rim/cirurgia , Laparoscopia , Lipocalina-2 , Lipocalinas/urina , Doadores Vivos , Masculino , Glicoproteínas de Membrana/urina , Pessoa de Meia-Idade , Período Pós-Operatório , Pressão , Proteínas Proto-Oncogênicas/urina , Receptores Virais , Fatores de Tempo , Resultado do Tratamento , Cateteres UrináriosRESUMO
BACKGROUND: In recent years, increased efforts have been undertaken to address the needs of patients with rare diseases by international initiatives and consortia devoted to rare disease research and management. However, information on the overall prevalence of rare diseases within the end-stage renal disease (ESRD) population is limited. The aims of this study were (i) to identify those rare diseases within the ERA-EDTA Registry for which renal replacement therapy (RRT) is being provided and (ii) to determine the prevalence and incidence of RRT for ESRD due to rare diseases, both overall and separately for children and adults. METHODS: The Orphanet classification of rare disease was searched for rare diseases potentially causing ESRD, and these diagnosis codes were mapped to the corresponding ERA-EDTA primary renal disease codes. Thirty-one diagnoses were defined as rare diseases causing ESRD. RESULTS: From 1 January 2007 to 31 December 2011, 7194 patients started RRT for a rare disease (10.6% children). While some diseases were exclusively found in adults (e.g. Fabry disease), primary oxalosis, cystinosis, congenital anomalies of the kidney and urinary tract (CAKUT) and medullary cystic kidney disease affected young patients in up to 46%. On 31 December 2011, 20 595 patients (12.4% of the total RRT population) were on RRT for ESRD caused by a rare disease. The point prevalence was 32.5 per million age-related population in children and 152.0 in adults. Only 5.8% of these patients were younger than 20 years; however, 57.7% of all children on RRT had a rare disease, compared with only 11.9% in adults. CAKUT and focal segmental glomerulosclerosis were the most prevalent rare disease entities among patients on RRT. CONCLUSIONS: More than half of all children and one of nine adults on RRT in the ERA-EDTA Registry suffer from kidney failure due to a rare disease, potentially with a large number of additional undiagnosed or miscoded cases. Comprehensive diagnostic assessment and the application of accurate disease classification systems are essential for improving the identification and management of patients with rare kidney diseases.
Assuntos
Falência Renal Crônica/terapia , Doenças Raras/complicações , Sistema de Registros/estatística & dados numéricos , Terapia de Substituição Renal , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Pré-Escolar , Europa (Continente)/epidemiologia , Feminino , Humanos , Incidência , Lactente , Recém-Nascido , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/etiologia , Masculino , Pessoa de Meia-Idade , Prevalência , Fatores de Tempo , Adulto JovemRESUMO
Fatigue is a common symptom of patients with chronic kidney disease, but seldom investigated after transplantation. We determined the prevalence, impact and related factors of severe fatigue in kidney transplant recipients (KTRs). Medical records and questionnaires were used to assess kidney function, donor characteristics, fatigue (Checklist Individual Strength), functional impairments (Sickness Impact Profile), work status, body mass index (BMI), pain, depressive symptoms, social support and sleeping problems in 180 participating KTRs. KTRs were compared with sex- and age-matched population-based controls. KTRs were significantly more often severely fatigued (39%) compared to matched controls (22%; P = 0.001). Severely fatigued KTRs had significantly more functional impairments than nonseverely fatigued recipients (effect size ≥ 0.7) P < 0.001, and less often a paid job (27% vs. 48%, P = 0.005). Univariate analysis showed that severely fatigued KTRs received more often a kidney from a deceased donor, had a higher BMI, more pain, discrepancy in social support, depressive symptoms and sleeping problems. In a multivariate analysis (n = 151) the latter two associations remained significant. Severe fatigue is a highly prevalent and disabling symptom in KTRs. Moreover, severe fatigue after kidney transplantation is more strongly related to behavioural and psychosocial factors than specific transplantation-related factors. Findings have implications for fatigue management.
Assuntos
Fadiga/diagnóstico , Fadiga/etiologia , Transplante de Rim/efeitos adversos , Insuficiência Renal/terapia , Adulto , Idoso , Índice de Massa Corporal , Creatinina/sangue , Depressão/complicações , Pessoas com Deficiência , Fadiga/psicologia , Feminino , Humanos , Transplante de Rim/psicologia , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Complicações Pós-Operatórias , Período Pós-Operatório , Prevalência , Proteinúria/diagnóstico , Psicologia , Insuficiência Renal/complicações , Índice de Gravidade de Doença , Apoio Social , Inquéritos e Questionários , Resultado do TratamentoRESUMO
BACKGROUND: There is no single model available to predict the long term survival for patients starting renal replacement therapy (RRT). The available models either predict survival on dialysis until transplantation, survival on the transplant waiting list, or survival after transplantation. The aim of this study was to develop a model that includes dialysis survival and survival after an eventual transplantation. METHODS: From the Dutch renal replacement registry, patients of 16 years of age or older were included if they started RRT between 1995 and 2005, still underwent RRT at baseline (90 days after the start of RRT) and were not registered at a non-renal organ transplant waiting list (N = 13868). A prediction model of 10-year patient survival after baseline was developed through multivariate Cox regression analysis, in one half of the research group. Age at start, sex, primary renal disease (PRD) and therapy at baseline were included as possible predictors. A sensitivity analysis has been performed to determine whether listing on the transplant waiting list should be added. The predictive performance of the model was internally validated. Calibration and discrimination were computed in the other half of the research group. Another sensitivity analysis was to assess whether the outcomes differed if the model was developed and tested in two geographical regions, which were less similar than the original development and validation group. No external validation has been performed. RESULTS: Survival probabilities were influenced by age, sex, PRD and therapy at baseline (p < 0.001). The calibration and discrimination both showed very reasonable results for the prediction model (C-index = 0.720 and calibration slope for the prognostic index = 1.025, for the 10 year survival). Adding registration on the waiting list for renal transplantation as a predictor did not improve the discriminative power of the model and was therefore not included in the model. CONCLUSIONS: With the presented prediction model, it is possible to give a reasonably accurate estimation on the survival chances of patients who start with RRT, using a limited set of easily available data.
Assuntos
Falência Renal Crônica/mortalidade , Falência Renal Crônica/reabilitação , Modelos de Riscos Proporcionais , Sistema de Registros , Terapia de Substituição Renal/mortalidade , Terapia de Substituição Renal/estatística & dados numéricos , Adolescente , Adulto , Distribuição por Idade , Idoso , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Prognóstico , Reprodutibilidade dos Testes , Estudos Retrospectivos , Fatores de Risco , Sensibilidade e Especificidade , Distribuição por Sexo , Análise de Sobrevida , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: To examine the time trend and international differences in access to the waiting list and renal transplantation of patients with end-stage kidney disease. METHODS: We included all patients (n = 30 961) from Austria, Norway, the Netherlands and Scotland who started renal replacement therapy (RRT) between 1995 and 2003 with their kidney transplant waiting list data (until 31 December 2005) and follow-up data on RRT and mortality (until 31 December 2007). The outcome measure was access to the waiting list within 2 years and to a first renal transplant within 4 years from the start of RRT, expressed as incidence per million age-related population (p.m.a.r.p.) per year. To estimate trends over time, mean percentage annual change (MPAC) and 95% confidence interval (CI) were calculated. RESULTS: In each country, the number of patients starting RRT > 65 years increased significantly over time, whereas the number of renal transplants did not increase to the same extent. Only in Norway were almost all patients on the waiting list transplanted within 4 years of RRT start if they were < 65 years. In patients who started RRT > 65 years, the access to renal transplantation was high in Norway (49 p.m.a.r.p.) and low in Austria ( < 26 p.m.a.r.p.), the Netherlands and Scotland (both < 10 p.m.a.r.p.) but increased significantly in Austria (MPAC = 9.8%; 95% CI = 3.9-16.9) and the Netherlands (MPAC = 9.0%; 95% CI = 3.2-15.0). CONCLUSION: Only in Norway, virtually all patients on the waiting list < 65 years received a transplant within 4 years after the start of RRT and, remarkably, also most of those > 65 years of age.
Assuntos
Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Falência Renal Crônica/terapia , Transplante de Rim/estatística & dados numéricos , Terapia de Substituição Renal , Listas de Espera , Fatores Etários , Idoso , Áustria/epidemiologia , Europa (Continente)/epidemiologia , Feminino , Seguimentos , Humanos , Incidência , Falência Renal Crônica/complicações , Falência Renal Crônica/epidemiologia , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Noruega/epidemiologia , Prognóstico , Fatores de Risco , Escócia/epidemiologia , Taxa de Sobrevida , Fatores de TempoRESUMO
AIM: This study investigates the difference in the incidence of renal replacement therapy (RRT) between Flanders and the Netherlands and possible explanations for this difference. METHODS: End-stage renal disease incidence data were obtained from the European Renal Association-European Dialysis and Transplant Association (ERA-EDTA). Additional sources were the National Institute of Statistics (NIS), the Central Bureau of Statistics (CBS), the Organisation for Economic Cooperation and Development (OECD) health data and the WHO Health For All database (WHO-HFA). RESULTS: There is remarkable difference in incidence rate of RRT between Flanders and the Netherlands, with a higher rate in Flanders. This difference is already present in patients aged 45-64 years and increases with age, being >2-fold higher in subjects of ≥ 75 years. With respect to the renal diagnoses leading to need for RRT, a higher share of especially diabetes mellitus type 2 and renovascular disease was observed in Flanders. Remarkably, the difference in incidence rate of RRT is not associated with a difference in survival on RRT, not even in the elderly, arguing against a restricted access to RRT in the Netherlands. In the general population, the expected number of healthy life years at birth is lower in Belgium than in the Netherlands, and in Belgium, the hospital discharge rates for diabetes, acute myocardial infarction and cerebrovascular accident and the number of coronary bypass procedures and percutaneous coronary interventions per capitum is higher, as is the prevalence of obesity. CONCLUSION: Our data do not support the assumption that the differences in RRT incidence in the elderly between Flanders and the Netherlands are due to a more restricted access to RRT in the Netherlands but may be due to differences in underlying comorbidity and life style between the two populations.
Assuntos
Recursos em Saúde , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/terapia , Estilo de Vida , Terapia de Substituição Renal/estatística & dados numéricos , Distribuição por Idade , Idoso , Bélgica/epidemiologia , Feminino , Pesquisas sobre Atenção à Saúde , Humanos , Incidência , Falência Renal Crônica/diagnóstico , Masculino , Pessoa de Meia-Idade , Países Baixos/epidemiologia , Terapia de Substituição Renal/métodos , Estudos Retrospectivos , Medição de Risco , Índice de Gravidade de Doença , Distribuição por Sexo , Fatores Socioeconômicos , Análise de SobrevidaRESUMO
Low donor supply and the high demand for transplantable organs is an international problem. The efficiency of organ procurement is often expressed by donor conversion rates (DCRs). These rates differ among countries, but a uniform starting point for defining a potential heart-beating donor is lacking. Imprecise definitions cause confusion; therefore, we call for a reproducible method like imminent brain death (IBD), which contains criteria in detail to determine potential heart-beating donors. Medical charts of 4814 patients who died on an ICU in Dutch university hospitals between January 2007 and December 2009 were reviewed for potential heart-beating donors. We compared two starting points: 'Severe Brain Damage' (SBD) (old definition) and IBD (new definition), which differ in the number of absent brainstem reflexes. Of the potential donors defined by IBD 45.6% fulfilled the formal brain death criteria, compared with 33.6% in the larger SBD group. This results in a higher DCR in the IBD group (40% vs. 29.5%). We illustrated important differences in DCRs when using two different definitions, even within one country. To allow comparison among countries and hospitals, one universal definition of a potential heart-beating donor should be used. Therefore, we propose the use of IBD.
Assuntos
Morte Encefálica/classificação , Estudos Retrospectivos , Doadores de Tecidos/classificação , Obtenção de Tecidos e Órgãos/métodos , Adulto , Idoso , Tronco Encefálico/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Países Baixos , ReflexoRESUMO
OBJECTIVES: Living donor kidney transplantation is currently the preferred treatment for patients with end-stage renal disease. The psychosocial evaluation of kidney donor candidates relies mostly on the clinical viewpoint of transplant professionals because evidence-based guidelines for psychosocial donor eligibility are currently lacking. However, the accuracy of these clinical risk judgements and the potential added value of a systematic self-reported screening procedure are as yet unknown. The current study examined the effectiveness of the psychosocial evaluation by transplant professionals and the potential value of donor self-report measures in optimising the donor evaluation. Based on the stress-vulnerability model, the predictive value of predonation, intradonation and postdonation factors to impaired longer term health-related quality of life (HRQoL) of kidney donors was studied. DESIGN: An observational prospective multicentre study. SETTING: Seven Dutch transplantation centres. PARTICIPANTS: 588 potential donors participated, of whom 361 donated. Complete prospective data of 230 donors were available. Also, 1048 risk estimation questionnaires were completed by healthcare professionals. METHODS: Transplant professionals (nephrologists, coordinating nurses, social workers and psychologists) filled in risk estimation questionnaires on kidney donor candidates. Furthermore, 230 kidney donors completed questionnaires (eg, on HRQoL) before and 6 and 12 months after donation. PRIMARY AND SECONDARY OUTCOME MEASURES: HRQoL, demographic and preoperative, intraoperative and postoperative health characteristics, perceived support, donor cognitions, recipient functioning and professionals risk estimation questionnaires. RESULTS: On top of other predictors, such as the transplant professionals' risk assessments, donor self-report measures significantly predicted impaired longer term HRQoL after donation, particularly by poorer predonation physical (17%-28% explained variance) and psychological functioning (23%). CONCLUSIONS: The current study endorses the effectiveness of the psychosocial donor evaluation by professionals and the additional value of donor self-report measures in optimising the psychosocial evaluation. Consequently, systematic screening of donors based on the most prominent risk factors provide ground for tailored interventions for donors at risk.
Assuntos
Transplante de Rim , Qualidade de Vida , Feminino , Humanos , Rim , Transplante de Rim/psicologia , Doadores Vivos/psicologia , Masculino , Estudos Prospectivos , Qualidade de Vida/psicologia , AutorrelatoRESUMO
BACKGROUND: Perioperative cardiovascular events in renal transplantation are common and non-invasive cardiac stress tests are recommended in high-risk renal transplant candidates. In 2004, we introduced a standardized preoperative cardiac risk assessment programme with the aim of reducing perioperative cardiac events. METHODS: Since 2004, all asymptomatic high-risk renal transplant candidates had to undergo non-invasive cardiac stress testing. Patients with a positive stress test went for a coronary angiography and if indicated for revascularization. The incidence of perioperative cardiac events (≤30 days of transplantation) was analysed in all high-risk patients who received a transplantation (screening group) and compared with high-risk renal transplant recipients evaluated in the 4 years before the introduction of the cardiac assessment programme (historical control group). RESULTS: Since 2004, 227 of 349 asymptomatic high-risk renal transplant candidates underwent non-invasive cardiac stress testing. In 15 patients (6.6%), significant ischaemia was found. Ten of these 15 patients underwent coronary angiography (eight patients had significant coronary artery disease and in five patients, percutaneous coronary intervention was performed). One hundred and sixty of 349 renal transplant candidates have received renal transplantation so far (screening group). In the screening group, 6 perioperative cardiac events (3.8%) occurred compared to 13 perioperative events (7.6%) in the historical control group (n = 172) (P = 0.136). CONCLUSIONS: The incidence of significant cardiac ischaemia in high-risk renal transplant patients was low and was followed by revascularization in a small percentage of patients. No significant decrease in perioperative cardiac events was observed after the introduction of the standardized cardiac assessment programme.
Assuntos
Angioplastia Coronária com Balão/normas , Angiografia Coronária/normas , Doença das Coronárias/diagnóstico , Falência Renal Crônica/terapia , Transplante de Rim/efeitos adversos , Complicações Pós-Operatórias , Adulto , Estudos de Casos e Controles , Doença das Coronárias/etiologia , Doença das Coronárias/mortalidade , Teste de Esforço , Feminino , Seguimentos , Taxa de Filtração Glomerular , Indicadores Básicos de Saúde , Humanos , Incidência , Falência Renal Crônica/complicações , Falência Renal Crônica/mortalidade , Transplante de Rim/mortalidade , Masculino , Pessoa de Meia-Idade , Cuidados Pré-Operatórios , Prognóstico , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Taxa de SobrevidaRESUMO
BACKGROUND: It is unknown whether if a plain X-ray of the iliac arteries (pelvic X-ray) is a reliable tool to detect calcifications and predict vascular complications. METHODS: In a prospective study, a pelvic X-ray was performed before transplantation in patients without evidence of peripheral vascular disease (n = 109) and vascular calcifications were scored. Vascular calcifications in the iliac arteries and complications were scored by the transplant surgeon during the operation (gold standard). RESULTS: Vascular calcifications were found on the pelvic X-ray in 33 patients (30.2%). The transplant surgeon identified vascular calcifications in 35%. Sensitivity and specificity of the pelvic X-ray for vascular calcifications in the iliac arteries were 48 and 82%, respectively. Technical problems with the arterial anastomosis due to vascular calcifications were observed in five patients. The negative predictive value and positive predictive value of a pelvic X-ray for complications with the arterial anastomosis were 99 and 14%, respectively. CONCLUSIONS: A pelvic X-ray is not a reliable tool to detect vascular calcifications. Technical problems with the arterial anastomosis due to calcifications are infrequent in the absence of vascular calcifications on the pelvic X-ray.