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      Sobrevida en trasplante renal en el Hospital Nacional de Niños Translated title: (Survival of kidney transplant at the National Children’s Hospital)

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          Abstract

          Resumen Objetivo: conocer la sobrevida del programa de trasplante renal en el Hospital Nacional de Niños, de enero 1978 a enero 2016. Métodos: estudio retrospectivo y descriptivo, en niños que recibieron un trasplante renal. Se recopiló la información de los expedientes clínicos. Se incluyeron pacientes menores de edad que tuvieran un injerto viable por al menos tres meses, pacientes con expediente pasivo completo y que brindaran el consentimiento informado. Resultados: se recopiló un total de 152 pacientes, y se incluyeron 143 en el estudio, ya que 9fueron excluidos. El 51 % (n= 73) fueron mujeres. Se realizó 167 trasplantes renales, el 63,5 % (n=105) fue de injertos provenientes de donante vivo relacionado. La sobrevida al primer año fue del 100 %, el 95 % a los 10 años y el 61% a los 20 años del trasplante. En cuanto a la sobrevida del injerto, se encontró una sobrevida al primer año del 95 %, del 76 % a los 3 años y del 73 % a los 5 años después del trasplante, con una incidencia de rechazo agudo del 28,7 %. Conclusión: el trasplante renal en niños es un procedimiento muy complejo donde la sobrevida depende de múltiples factores ambientales y adquiridos; sin embargo, sí es posible que centros pediátricos como el nuestro puedan llegar a alcanzar porcentajes de sobrevida acordes a los de centros de países desarrollados.

          Translated abstract

          Abstract Objective: to know the survival of the renal transplant program at the National Children’s Hospital, from January 1978 to January 2016. Methods: retrospective and descriptive study in children who received a kidney transplant. The information was compiled from the clinical files. We included children who had a viable graft for at least three months, patients with a complete passive file and who provided informed consent. Results: A total of 152 patients were collected, and 143 were included in the study, since 9 were excluded. 51% (n = 73) were women. A total of 167 kidney transplants were performed, 63.5% (n = 105) were grafts from a related living donor. Survival at the first year was 100%, 95% at 10 years and 61% at 20 years after transplantation. Regarding the survival of the graft, a survival rate of 95% was found in the first year, 76% at 3 years and 73% at 5 years after transplantation, with an incidence of acute rejection of 28.7%. Conclusions: Kidney transplantation in children is a very complex procedure where survival depends on multiple environmental factors and / or acquired, however it is possible that pediatric centers like ours can reach survival rates according to centers in developed countries.

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          Most cited references23

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          Mortality and causes of death of end-stage renal disease in children: a Dutch cohort study.

          To establish mortality rates, causes of death, and determinants of mortality in children with end-stage renal disease (ESRD), we performed a national long-term follow up study. Mortality rate was determined in all Dutch patients with onset of ESRD at ages 0 to 14 years in the period between 1972 and 1992. Causes of death and mortality determinants were investigated in all patients of this cohort who were born before 1979. Data were derived from the Dutch Registry for patients on renal replacement therapy (RRT), medical charts and National Health Database. Of all 381 patients 85 had died. The overall mortality rate (MR) was 1.57/100 patient-years, and the standardized mortality rate (SMR) was 31.0. The MR for patients 0 to 5 and 6 to 10 years old at onset of ESRD decreased from, respectively, 7.0 (range 0-14.9) to 3.9 (1.2-6.7) and 4.3 (1.1-7.5) to 1.6 (0.3-2.8) between the periods 1972-1981 and 1982-1992. The mortality hazard ratio of relatively long standing dialysis and of long standing hypertension were, respectively, 7.2 (4.4-11.8) and 3.1 (2.1-4.6), of cyclosporine-introduction in transplanted patients 0.3 (0.1-0.4). Overall cerebrovascular accidents (24%) and infections (21%) were the most common causes of death; after 10 years of RRT cardiac death (7/21) was most prevalent. Cardiovascular death was most prominent in dialysis as well as transplanted patients. Survival in children with ESRD has increased over the last 20 years, but the SMR remains high. Early transplantation and a more vigorous approach toward hypertension and infection may be mandatory in order to further reduce mortality.
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            Association of Sex with Risk of Kidney Graft Failure Differs by Age

            Prior studies of sex differences in kidney graft survival showed conflicting results. We hypothesized that the association between recipient sex and kidney graft failure risk differs by recipient age and donor sex. We evaluated 159,417 patients recorded in the Scientific Registry of Transplant Recipients database who received a first deceased-donor kidney transplant (1995–2013). We used time-varying Cox models to estimate the association between recipient sex and death-censored graft failure. Models, stratified on donor sex and adjusted for potential confounders, included a recipient sex by current age interaction term. Among recipients of male donors, females of all ages had significantly higher graft failure risks than males (adjusted hazard ratios 0–14 years: 1.51 [95% confidence intervals 1.19 to 1.90]; 15–24 years: 1.37 [1.18 to 1.59]; 25–44 years: 1.14 [1.03 to 1.26]; 45 years: 1.05 [1.01 to 1.09]). Among recipients of female-donor grafts, only female recipients aged 15–24 years had a significantly higher graft failure risk than their male counterparts had (1.28 [1.06 to 1.53]). Indeed, female recipients aged ≥45 years had a significantly lower graft failure risk than their male counterparts had (0.95 [0.91 to 0.99]). These observations might be explained by the combined influence of several factors, including recognition of sex-determined minor histocompatibility antigens, influence of sex hormones on immune activation, sex- and age-related differences in medication adherence, and sex-related differences in body size. Additional studies should determine whether sex- and age-specific immunosuppression strategies are warranted for kidney graft recipients.
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              Determinants of long-term survival of pediatric kidney grafts reported to the United Network for Organ Sharing kidney transplant registry.

              Pediatric 1-yr kidney graft survival rates have steadily improved in the US so that, by 1998, over 90% of hospital-discharged young recipients had survived the first year post-transplantation (Tx). However, 25% of the early surviving kidney grafts failed at 5 yr, yielding a projected half-life of 10 yr. Given a median age at transplant of 13 yr (range 0-20 yr), 50% of all current pediatric kidney recipients will need a second graft before the age of 25 years. We examined 8,422 pediatric renal transplants reported to the United Network for Organ Sharing (UNOS) Kidney Transplant Registry and, by using a log-linear multifactorial analysis, determined the relative influence of 26 major transplant factors on long-term graft survival. Results are reported as percentages of assignable variation (totaling 100% for all 26 factors combined) in pediatric outcomes beyond 1 yr and as adjusted graft survival rates. Transplant center, recipient race and age, transplant year, and panel-reactive antibody (PRA) had assignable variation percentages of 25, 24, 16, 12, and 4, respectively. When combined, they accounted for 81% of changes in long-term survival. Besides center effects, Blacks, teenagers, and transplants performed before 1994 exhibited significantly (p 40%) pediatric patients (p = 0.02). Patients transplanted with a living donor kidney demonstrated a 5% point advantage at 5 yr post-Tx over cadaver donor kidneys (p = 0.001). Although the survival rate of pediatric kidney transplants has improved steadily, the long-term outcomes for teenagers and for Black recipients lag significantly behind those of younger patients and non-Blacks.
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                Author and article information

                Contributors
                Role: ND
                Journal
                amc
                Acta Médica Costarricense
                Acta méd. costarric
                Colegio de Médicos y Cirujanos de Costa Rica (San José, San José, Costa Rica )
                0001-6012
                0001-6002
                June 2019
                : 61
                : 2
                : 62-67
                Affiliations
                [1] San José orgnameHospital Nacional de Niños orgdiv1Servicio de Nefrología Pediátrica Costa Rica
                Article
                S0001-60022019000200062
                26d64448-7790-44d2-a0eb-3f08de1293b1

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 International License.

                History
                : 28 February 2019
                : 24 October 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 26, Pages: 6
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                SciELO Costa Rica

                Categories
                Original

                survivors,kidney transplant,falla renal,sobrevivientes,trasplante renal,kidney failure

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