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1.
Clin Transplant ; 35(6): e14305, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33797134

RESUMO

The current American Society of Transplantation (AST) accredited transplant fellowship programs in the United States provide no structured formal training in leadership and administration which is essential for successfully running a transplant program. We conducted a survey of medical directors of active adult kidney and kidney-pancreas transplant programs in the United States about their demographics, training pathways, and roles and responsibilities. The survey was emailed to 183 medical directors, and 123 (67.2%) completed the survey. A majority of respondents were older than 50 years (61%), males (80%), and holding that position for more than 10 years (47%). Only 51% of current medical directors had taken that position after completing a one-year transplant fellowship, and 58% took on the role with no prior administrative or leadership experience. The medical directors reported spending a median 50%-75% of time in clinical responsibilities, 25%-50% of time in administration, and 0%-25% time in research. The survey also captured various administrative roles of medical directors vis-à-vis other transplant leaders. The study, designed to be the starting point of an improvement initiative of the AST, provided important insight into the demographics, training pathways, roles and responsibilities, job satisfaction, education needs, and training gaps of current medical directors.


Assuntos
Internato e Residência , Diretores Médicos , Adulto , Educação de Pós-Graduação em Medicina , Bolsas de Estudo , Humanos , Rim , Masculino , Pâncreas , Inquéritos e Questionários , Estados Unidos
2.
Clin J Am Soc Nephrol ; 14(11): 1670-1676, 2019 11 07.
Artigo em Inglês | MEDLINE | ID: mdl-31554619

RESUMO

The pretransplant risk assessment for patients with ESKD who are undergoing evaluation for kidney transplant is complex and multifaceted. When considering cardiovascular disease in particular, many factors should be considered. Given the increasing incidence of kidney transplantation and the growing body of evidence addressing ESKD-specific cardiovascular risk profiles, there is an important need for a consolidated, evidence-based model that considers the unique cardiovascular challenges that these patients face. Cardiovascular physiology is altered in these patients by abrupt shifts in volume status, altered calcium-phosphate metabolism, high-output states (in the setting of arteriovenous fistulization), and adverse geometric and electrical remodeling, to name a few. Here, we present a contemporary review by addressing cardiomyopathy/heart failure, pulmonary hypertension, valvular dysfunction, and arrhythmia/sudden cardiac death within the ESKD population.


Assuntos
Doenças Cardiovasculares/complicações , Falência Renal Crônica/complicações , Falência Renal Crônica/cirurgia , Transplante de Rim , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/terapia , Humanos , Guias de Prática Clínica como Assunto , Período Pré-Operatório , Medição de Risco
3.
Prog Transplant ; 29(3): 239-247, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31146624

RESUMO

INTRODUCTION: Because apolipoprotein L1 (APOL1) risk variants may contribute to live donors' kidney failure postdonation, professional guidelines suggest informing potential donors with African ancestry about the availability of APOL1 genotyping. This study assessed African American (AA) donors' perceptions of APOL1 genetic testing and how APOL1 may affect ethnic identity. METHODS/APPROACH: Four focus groups were conducted with AA donors about their decision-making for and perceptions of APOL1 genetic testing and donation to inform a new culturally targeted educational brochure on APOL1 genetic testing. Qualitative data were analyzed by thematic analysis. FINDINGS: Seventeen donors participated (47% participation rate). Four major themes emerged. (1) In hypothetical scenarios, most participants would have undergone APOL1 testing during donor evaluation to make a more informed decision, but many would have still donated. (2) Participants desired information about how having 2 APOL1 risk variants affects the donor's and the recipient's health. (3) Participants referred to diversity of genetic ancestry and cultural constructions of racial/ethnic identity to question the population at risk for APOL1 risk variants and recommended that all potential donors undergo genetic testing and receive education about APOL1. (4) Participants worried that out-of-pocket costs would deter APOL1 testing and that APOL1 could become a preexisting condition and discriminate against AAs. DISCUSSION: Our findings suggest that AA donors desire APOL1 testing to foster informed consent. Transplant clinicians should be aware of these responses to APOL1 testing and be sensitive to historical issues of distrust and discrimination.


Assuntos
Apolipoproteína L1/genética , Atitude Frente a Saúde/etnologia , Negro ou Afro-Americano/psicologia , Testes Genéticos , Doadores Vivos/psicologia , Preferência do Paciente , Insuficiência Renal/genética , Identificação Social , Adulto , Negro ou Afro-Americano/genética , Idoso , Antropologia Cultural , Feminino , Grupos Focais , Gastos em Saúde , Humanos , Transplante de Rim , Masculino , Pessoa de Meia-Idade , Cobertura de Condição Pré-Existente , Pesquisa Qualitativa
4.
Transplantation ; 103(5): 980-989, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30720682

RESUMO

BACKGROUND: Underutilization of marginal-quality kidneys for transplantation produced ideas of expediting kidney placement for populations with decreased opportunities of receiving transplants. Such policies can be less efficacious for specific individuals and should be scrutinized until the decision-making for accepting marginal-quality organs, which has relied on experiential judgment, is better understood at the individual level. There exist rigorous tools promoting personalized decisions with useful and objective information. METHODS: This article introduces a decision-tree methodology that analyzes a patient's dilemma: to accept a kidney offer now or reject it. The methodology calculates the survival benefit of accepting a kidney given a certain quality now and the survival benefit of rejecting it. Survival benefit calculation accounts for patients' and donors' characteristics and transplant centers' and organ procurement organizations' performances and incorporates patients' perceived transplant and dialysis utilities. Valuations of rejecting an offer are contingent on future opportunities and subject to uncertainty in the timing of successive kidney offers and their quality and donor characteristics. RESULTS: The decision tree was applied to a realistic patient profile as a demonstration. The tool was tested on 1000 deceased-donor kidney offers in 2016. Evaluating up to 1 year of future offers, the tool attains 61% accuracy, with transplant utility of 1.0 and dialysis utility of 0.5. The accuracy reveals potential bias in kidney offer acceptance/rejection at transplant centers. CONCLUSIONS: The decision-tree tool presented could aid personalized transplant decision-making in the future by providing patients with calculated, individualized survival benefits between accepting and rejecting a kidney offer.


Assuntos
Árvores de Decisões , Seleção do Doador/métodos , Falência Renal Crônica/terapia , Transplante de Rim/métodos , Modelos Biológicos , Adolescente , Adulto , Idoso , Tomada de Decisões , Feminino , Humanos , Falência Renal Crônica/mortalidade , Transplante de Rim/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Participação do Paciente/métodos , Diálise Renal/estatística & dados numéricos , Alocação de Recursos/métodos , Alocação de Recursos/estatística & dados numéricos , Medição de Risco/métodos , Fatores de Risco , Análise de Sobrevida , Fatores de Tempo , Transplantes/estatística & dados numéricos , Listas de Espera , Adulto Jovem
5.
J Cardiovasc Med (Hagerstown) ; 20(2): 51-58, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30540647

RESUMO

: Patients with end-stage renal disease (ESRD) undergoing evaluation for kidney and/or pancreas transplantation represent a population with unique cardiovascular (CV) profiles and unique therapeutic needs. Coronary artery disease (CAD) is common in patients with ESRD, mediated by both the overrepresentation and higher prognostic value of traditional CV risk factors amongst this population, as well as altered cardiovascular responses to failing renal function, likely mediated by dysregulation of the renin-angiotensin-aldosterone system (RAAS) and abnormal calcium and phosphate metabolism. Within the ESRD population, obstructive CAD correlates highly with adverse coronary events, including during the peri-transplant period, and successful revascularization may attenuate some of that increased risk. Accordingly, peri-transplant coronary risk assessment is critical to ensuring optimal outcomes for these patients. The following provides a review of CAD in patients being evaluated for kidney and/or pancreas transplantation, as well as evidence-based recommendations for appropriate peri-transplant evaluation and management.


Assuntos
Doença da Artéria Coronariana/terapia , Falência Renal Crônica/cirurgia , Transplante de Rim , Transplante de Pâncreas , Pancreatopatias/cirurgia , Algoritmos , Tomada de Decisão Clínica , Doença da Artéria Coronariana/complicações , Doença da Artéria Coronariana/diagnóstico , Doença da Artéria Coronariana/fisiopatologia , Técnicas de Apoio para a Decisão , Humanos , Falência Renal Crônica/complicações , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/fisiopatologia , Transplante de Rim/efeitos adversos , Transplante de Pâncreas/efeitos adversos , Pancreatopatias/complicações , Pancreatopatias/diagnóstico , Pancreatopatias/fisiopatologia , Medição de Risco , Fatores de Risco , Resultado do Tratamento
6.
Prog Transplant ; 29(1): 26-35, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30541404

RESUMO

INTRODUCTION: There is debate over whether Apolipoprotein L1 (APOL1) gene risk variants contribute to African American (AA) live donors' (LD) increased risk of kidney failure. Little is known about factors influencing physicians' integration of APOL1 genetic testing of AA LDs into donor evaluation. DESIGN: We conducted a cross-sectional survey, informed by Roger's Diffusion of Innovations theory, among nephrology and surgeon members of the American Society of Nephrology, American Society of Transplantation, and American Society of Transplant Surgeons about their practices of and attitudes about APOL1 genetic testing of AA potential LDs. Descriptive statistics and bivariate analyses were performed. RESULTS: Of 383 completed surveys, most physicians believed that APOL1 testing can help AA LDs make more informed donation decisions (87%), and the addition of APOL1 testing offers better clinical information about AA LD's eligibility for donation than existing evaluation approaches (74%). Among respondents who evaluate LDs (n = 345), 63% would definitely or probably begin or continue using APOL1 testing in the next year, however, few use APOL1 testing routinely (4%) or on a case-by-case basis (14%). Most did not know the right clinical scenario to order APOL1 testing (59%), but would use educational materials to counsel AA LDs about APOL1 testing (97%). DISCUSSION: Although physicians were highly supportive of APOL1 genetic testing for AA LDs, few physicians use APOL1 testing. As more physicians intend to use APOL1 testing, an ethical framework and clinical decision support are needed presently to assist clinicians in clarifying the proper indication of APOL1 genetic testing.


Assuntos
Apolipoproteína L1/genética , Testes Genéticos , Transplante de Rim , Doadores Vivos , Padrões de Prática Médica , Adulto , Negro ou Afro-Americano/genética , Idoso , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Nefrologistas , Cirurgiões , Inquéritos e Questionários , Estados Unidos , Adulto Jovem
7.
Am J Kidney Dis ; 72(6): 819-833, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30360961

RESUMO

RATIONALE & OBJECTIVE: African American live kidney donors ("donors") have a greater risk for kidney failure than European American donors. Apolipoprotein L1 gene (APOL1) variants in African Americans may be associated with this disparity. STUDY DESIGN: Cross-sectional mixed-methods design. SETTING & PARTICIPANTS: African American donors at 1 transplantation center. ANALYTICAL APPROACH: Semistructured interviews assessed attitudes about APOL1 genetic testing, willingness to undergo APOL1 testing, hypothetical decisions about donating with 2 APOL1 variants, and demographics. Surveys assessed perceptions of ethnic identity and genetics knowledge. Interview transcriptions were analyzed using thematic analysis. Survey data were analyzed using descriptive statistics. RESULTS: 23 donors participated in semistructured interviews. Most (96%) reported that transplantation centers should routinely offer APOL1 genetic testing to all African American potential donors. Most (87%) would have been willing to undergo APOL1 testing before donating. Although study participants noted that APOL1 testing may deter African American potential donors from donating, most (61%) would have donated even if they had 2 high-risk APOL1 variants. Several themes emerged. Study participants believed that APOL1 testing was beneficial for providing information to help donors make informed donation decisions. Participants expressed concern about APOL1 variants placing donors at harm for kidney failure, and therefore valued taking preventive health measures. Participants believed that potential donors would experience psychological distress from learning that they have 2 gene variants and could harm their recipients. Participants were apprehensive about insurance coverage and costs of APOL1 testing and feared that APOL1 genetic test results could discriminate against African Americans. LIMITATIONS: Findings may not be generalizable to African American potential donors. CONCLUSIONS: Findings suggest that African American donors support APOL1 genetic testing yet fear that APOL1 variants and genetic testing could adversely affect donors' health and ethnic identity. Transplantation centers using APOL1 genetic testing should address African American donors' concerns about APOL1 genetic testing to optimize future donors' informed consent practices.


Assuntos
Apolipoproteína L1/genética , Negro ou Afro-Americano/genética , Conhecimentos, Atitudes e Prática em Saúde , Transplante de Rim , Doadores Vivos/psicologia , Adulto , Atitude Frente a Saúde , Estudos Transversais , Feminino , Testes Genéticos/métodos , Humanos , Entrevistas como Assunto , Masculino , Pessoa de Meia-Idade , Segurança do Paciente/estatística & dados numéricos , Fatores de Risco , Obtenção de Tecidos e Órgãos , Estados Unidos
8.
Am J Transplant ; 18(7): 1604-1614, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29603613

RESUMO

The presence of preexisting (memory) or de novo donor-specific HLA antibodies (DSAs) is a known barrier to successful long-term organ transplantation. Yet, despite the fact that laboratory tools and our understanding of histocompatibility have advanced significantly in recent years, the criteria to define presence of a DSA and assign a level of risk for a given DSA vary markedly between centers. A collaborative effort between the American Society for Histocompatibility and Immunogenetics and the American Society of Transplantation provided the logistical support for generating a dedicated multidisciplinary working group, which included experts in histocompatibility as well as kidney, liver, heart, and lung transplantation. The goals were to perform a critical review of biologically driven, state-of-the-art, clinical diagnostics literature and to provide clinical practice recommendations based on expert assessment of quality and strength of evidence. The results of the Sensitization in Transplantation: Assessment of Risk (STAR) meeting are summarized here, providing recommendations on the definition and utilization of HLA diagnostic testing, and a framework for clinical assessment of risk for a memory or a primary alloimmune response. The definitions, recommendations, risk framework, and highlighted gaps in knowledge are intended to spur research that will inform the next STAR Working Group meeting in 2019.


Assuntos
Sobrevivência de Enxerto/imunologia , Antígenos HLA/imunologia , Histocompatibilidade/imunologia , Isoanticorpos/imunologia , Transplante de Órgãos , Guias de Prática Clínica como Assunto/normas , Medição de Risco/métodos , Doadores de Tecidos , Humanos , Relatório de Pesquisa
10.
Transplantation ; 101(7): 1690-1697, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-27163541

RESUMO

BACKGROUND: Renal transplantation is a lifesaving intervention for end-stage renal disease. The demand for renal transplantation outweighs the availability of organs; however, up to 20% of recovered kidneys are discarded before transplantation. We aimed to better characterize the risk factors for deceased donor kidney discard. METHODS: We performed a secondary analysis of the Organ Procurement and Transplantation Network database from 2000 to 2012 of all solid organ donors. The cohort was split into training (80%) and validation (20%) subsets. We performed a stepwise logistic regression to develop a multivariate risk prediction model for kidney graft discard and validated the model. The performance of the models was evaluated with respect to calibration, and area under the curve (AUC) of receiver operating characteristic curves. RESULTS: There were no significant baseline differences between the training (n = 57 474) and validation (n = 14 368) cohorts. The multivariate model validation showed very good discriminant function in predicting kidney discard (AUC = 0.84). Predictors of increased discard included age older than 50 years, performance of a kidney biopsy, cytomegalovirus seropositive status, donation after cardiac death, hepatitis B and C seropositive status, cigarette use, diabetes, hypertension, terminal creatinine greater than 1.5 mg/dL and AB blood type. The model outperformed the Kidney Donor Risk Index in predicting discard (P < 0.001). Subgroup analysis of expanded criteria donor kidneys demonstrated good discrimination with an AUC of 0.70. CONCLUSIONS: We have characterized several important predictors of deceased donor kidney discard. Better understanding of factors that lead to increased deceased donor kidney discard can allow for targeted interventions to reduce discard.


Assuntos
Seleção do Doador , Transplante de Rim/métodos , Doadores de Tecidos/provisão & distribuição , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Área Sob a Curva , Causas de Morte , Técnicas de Apoio para a Decisão , Feminino , Sobrevivência de Enxerto , Humanos , Transplante de Rim/efeitos adversos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Complicações Pós-Operatórias/etiologia , Valor Preditivo dos Testes , Curva ROC , Sistema de Registros , Medição de Risco , Fatores de Risco , Fatores de Tempo , Obtenção de Tecidos e Órgãos , Resultado do Tratamento , Estados Unidos , Adulto Jovem
11.
Clin J Am Soc Nephrol ; 11(3): 505-11, 2016 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-26839235

RESUMO

BACKGROUND AND OBJECTIVES: In December of 2014, the Organ Procurement and Transplant Network implemented a new Kidney Allocation System (KAS) for deceased donor transplant, with increased priority for highly sensitized candidates (calculated panel-reactive antibody [cPRA] >99%). We used a modified version of the new KAS to address issues of access and equity for these candidates. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: In a simulation, 10,988 deceased donor kidneys transplanted into waitlisted recipients in 2010 were instead allocated to candidates with cPRA≥80% (n=18,004). Each candidate's unacceptable donor HLA antigens had been entered into the allocation system by the transplant center. In simulated match runs, kidneys were allocated sequentially to adult ABO identical or permissible candidates with cPRA 100%, 99%, 98%, etc. to 80%. Allocations were restricted to donor/recipient pairs with negative virtual crossmatches. RESULTS: The simulation indicated that 2111 of 10,988 kidneys (19.2%) would have been allocated to patients with cPRA 100% versus 74 of 10,988 (0.7%) that were actually transplanted. Of cPRA 100% candidates, 74% were predicted to be compatible with an average of six deceased donors; the remaining 26% seemed to be incompatible with every deceased donor organ that entered the system. Of kidneys actually allocated to cPRA 100% candidates in 2010, 66% (49 of 74) were six-antigen HLA matched/zero-antigen mismatched (HLA-A, -B, and -DR) with their recipients versus only 11% (237 of 2111) in the simulation. The simulation predicted that 10,356 of 14,433 (72%) candidates with cPRA 90%-100% could be allocated an organ compared with 7.3% who actually underwent transplant. CONCLUSIONS: Data in this simulation are consistent with early results of the new KAS; specifically, nearly 20% of deceased donor kidneys were (virtually) compatible with cPRA 100% candidates. Although most of these candidates were predicted to be compatible with multiple donors, approximately one-quarter are unlikely to receive a single offer.


Assuntos
Seleção do Doador , Antígenos HLA/imunologia , Histocompatibilidade , Isoanticorpos/sangue , Transplante de Rim/métodos , Doadores de Tecidos/provisão & distribuição , Biomarcadores/sangue , Simulação por Computador , Acessibilidade aos Serviços de Saúde , Teste de Histocompatibilidade , Humanos , Valor Preditivo dos Testes , Sistema de Registros , Medição de Risco , Fatores de Risco , Obtenção de Tecidos e Órgãos , Estados Unidos , Listas de Espera
12.
Transplantation ; 99(2): 424-30, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25099700

RESUMO

BACKGROUND: Increasing use of kidney grafts for simultaneous liver and kidney (SLK) transplants is causing concern about the most effective utilization of scarce kidney graft resources. This study evaluated the impact of implementing the proposed United Network for Organ Sharing SLK transplant policy on outcomes for end-stage liver disease (ESLD) and end-stage renal disease (ESRD) patients awaiting transplant. METHODS: A Markov model was constructed to simulate a hypothetical cohort of ESLD patients over a 30-year time horizon starting from age 50. The model applies the different criteria being considered in the United Network for Organ Sharing policy and tallies outcomes, including numbers of procedures and life years after liver transplant alone (LTA) or SLK transplant. RESULTS: When 1-week pretransplant dialysis duration is required, the numbers of SLK transplants and LTAs would be 648 and 9,065, respectively. If the pretransplant dialysis duration is extended to 12 weeks, there would be 240 SLK transplants and 9,426 LTAs. This change results in a decrease of 6,483 life years among SLK transplant recipients and an increase of 4,971 life years among LTA recipients. However, by increasing the dialysis duration to 12 weeks from 1 week, 408 kidney grafts would be released to the kidney waitlist because of the decline in SLK transplants; this yields 796 additional life years gained among ESRD patients. CONCLUSION: Implementation of the proposed SLK transplant policy could restore access to kidney transplants for patients with ESRD albeit at the detriment of patients with ESLD and renal impairment.


Assuntos
Simulação por Computador , Doença Hepática Terminal/cirurgia , Acessibilidade aos Serviços de Saúde , Falência Renal Crônica/cirurgia , Transplante de Rim , Transplante de Fígado , Modelos Teóricos , Formulação de Políticas , Fatores Etários , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/mortalidade , Humanos , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/mortalidade , Transplante de Rim/efeitos adversos , Transplante de Rim/mortalidade , Transplante de Fígado/efeitos adversos , Transplante de Fígado/mortalidade , Cadeias de Markov , Pessoa de Meia-Idade , Diálise Renal , Reprodutibilidade dos Testes , Fatores de Risco , Análise de Sobrevida , Fatores de Tempo , Estados Unidos/epidemiologia , Listas de Espera
13.
Med Decis Making ; 35(6): 797-807, 2015 08.
Artigo em Inglês | MEDLINE | ID: mdl-25385750

RESUMO

The national demand for kidney transplantation far outweighs the supply of kidney organs. Currently, a patient's ability to receive a kidney transplant varies depending on where he or she seeks transplantation. This reality is in direct conflict with a federal mandate from the Department of Health and Human Services. We analyze current kidney allocation and develop an alternative kidney sharing strategy using a multiperiod linear optimization model, KSHARE. KSHARE aims to improve geographic equity in kidney transplantation while also respecting transplant system constraints and priorities. KSHARE is tested against actual 2000-2009 kidney allocation using Organ Procurement and Transplant Network data. Geographic equity is represented by minimizing the range in kidney transplant rates around local areas of the country. In 2009, less than 25% of standard criteria donor kidneys were allocated beyond the local area of procurement, and Donor Service Area kidney transplantation rates varied from 3.0% to 30.0%, for an overall range of 27.0%. Given optimal sharing of kidneys within 600 miles of procurement for 2000-2009, kidney transplant rates vary from 5.0% to 12.5% around the country for an overall kidney transplant range of 7.5%. Nationally sharing kidneys optimally between local areas only further decreases the transplant rate range by 1.7%. Enhancing the practice of sharing kidneys by the KSHARE model may increase geographic equity in kidney transplantation.


Assuntos
Simulação por Computador , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Necessidades e Demandas de Serviços de Saúde/estatística & dados numéricos , Transplante de Rim/estatística & dados numéricos , Alocação de Recursos/estatística & dados numéricos , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Equidade em Saúde , Humanos , Estados Unidos
14.
Transplantation ; 98(9): 931-6, 2014 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-25286057

RESUMO

BACKGROUND: The national organ allocation system for deceased-donor kidney transplant will endure increased burden as the waitlist expands and organ shortage persists. The Department of Health and Human Services issued the "Final Rule" in 1998 that states "Organs and tissues ought to be distributed on the basis of objective priority criteria and not on the basis of accidents of geography." However, it has not been addressed whether the rule was effective in encouraging regions to share the additional burden equitably. OBJECTIVE: To assess the significance of changes of geographic disparities for four metrics since the rule's adoption: waiting times, transplant rates, pretransplant mortality, and organ quality. METHODS: Using Organ Procurement and Transplant Network data from 1988 through 2009, annual ranges of the metrics were calculated for all donor service areas and United Network for Organ Sharing regions. Time series analyses were used to compare the metrics before and after the enactment of the Final Rule. RESULTS: A total of 412,127 kidney transplant candidates and 178,163 deceased-donor recipients were analyzed. Demographics varied significantly by region. The ranges of the four metrics have worsened by approximately 30% or more after the Final Rule at both the regional and donor service area levels. CONCLUSION: Increasing geographic disparity in allocation procedures may yield diverging outcomes and experiences in different locations for otherwise similar candidates. Consensus for measuring allocation discrepancies and policy interventions are required to mitigate the inequities.


Assuntos
Disparidades em Assistência à Saúde , Transplante de Rim , Obtenção de Tecidos e Órgãos , Geografia , Política de Saúde , Acessibilidade aos Serviços de Saúde , Humanos , Rim/patologia , Transplante de Rim/normas , Transplante de Órgãos , Avaliação de Resultados em Cuidados de Saúde , Fatores de Tempo , Doadores de Tecidos , Obtenção de Tecidos e Órgãos/normas , Estados Unidos , Listas de Espera
15.
Clin J Am Soc Nephrol ; 9(8): 1449-60, 2014 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-24970871

RESUMO

BACKGROUND AND OBJECTIVES: The Statewide Sharing variance to the national kidney allocation policy allocates kidneys not used within the procuring donor service area (DSA), first within the state, before the kidneys are offered regionally and nationally. Tennessee and Florida implemented this variance. Known geographic differences exist between the 58 DSAs, in direct violation of the Final Rule stipulated by the US Department of Health and Human Services. This study examined the effect of Statewide Sharing on geographic allocation disparity over time between DSAs within Tennessee and Florida and compared them with geographic disparity between the DSAs within a state for all states with more than one DSA (California, New York, North Carolina, Ohio, Pennsylvania, Texas, and Wisconsin). DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: A retrospective analysis from 1987 to 2009 was conducted using Organ Procurement and Transplant Network data. Five previously used indicators for geographic allocation disparity were applied: deceased-donor kidney transplant rates, waiting time to transplantation, cumulative dialysis time at transplantation, 5-year graft survival, and cold ischemic time. RESULTS: Transplant rates, waiting time, dialysis time, and graft survival varied greatly between deceased-donor kidney recipients in DSAs in all states in 1987. After implementation of Statewide Sharing in 1992, disparity indicators decreased by 41%, 36%, 31%, and 9%, respectively, in Tennessee and by 28%, 62%, 34%, and 19%, respectively in Florida, such that the geographic allocation disparity in Tennessee and Florida almost completely disappeared. Statewide kidney allocations incurred 7.5 and 5 fewer hours of cold ischemic time in Tennessee and Florida, respectively. Geographic disparity between DSAs in all the other states worsened or improved to a lesser degree. CONCLUSIONS: As sweeping changes to the kidney allocation system are being discussed to alleviate geographic disparity--changes that are untested run the risk of unintended consequences--more limited changes, such as Statewide Sharing, should be further studied and considered.


Assuntos
Política de Saúde/tendências , Acessibilidade aos Serviços de Saúde/tendências , Disparidades em Assistência à Saúde/tendências , Falência Renal Crônica/terapia , Transplante de Rim/tendências , Características de Residência , Planos Governamentais de Saúde/tendências , Obtenção de Tecidos e Órgãos/tendências , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Isquemia Fria/tendências , Feminino , Sobrevivência de Enxerto , Humanos , Lactente , Recém-Nascido , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/epidemiologia , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Formulação de Políticas , Regionalização da Saúde/tendências , Diálise Renal/tendências , Estudos Retrospectivos , Governo Estadual , Fatores de Tempo , Doadores de Tecidos/provisão & distribuição , Obtenção de Tecidos e Órgãos/organização & administração , Resultado do Tratamento , Estados Unidos/epidemiologia , Listas de Espera , Adulto Jovem
16.
J Am Soc Nephrol ; 25(8): 1842-8, 2014 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-24833128

RESUMO

In 2013, the Organ Procurement and Transplantation Network in the United States approved a new national deceased donor kidney allocation policy that introduces the kidney donor profile index (KDPI), which gives scores of 0%-100% based on 10 donor factors. Kidneys with lower KDPI scores are associated with better post-transplant survival. Important features of the new policy include first allocating kidneys from donors with a KDPI≤20% to candidates in the top 20th percentile of estimated post-transplant survival, adding waiting time from dialysis initiation, conferring priority points for a calculated panel-reactive antibody (CPRA)>19%, broader sharing of kidneys for candidates with a CPRA≥99%, broader sharing of kidneys from donors with a KDPI>85%, eliminating the payback system, and allocating blood type A2 and A2B kidneys to blood type B candidates. We simulated the distribution of kidneys under the new policy compared with the current allocation policy. The simulation showed increases in projected median allograft years of life with the new policy (9.07 years) compared with the current policy (8.82 years). With the new policy, candidates with a CPRA>20%, with blood type B, and aged 18-49 years were more likely to undergo transplant, but transplants declined in candidates aged 50-64 years (4.1% decline) and ≥65 years (2.7% decline). These simulations demonstrate that the new deceased donor kidney allocation policy may improve overall post-transplant survival and access for highly sensitized candidates, with minimal effects on access to transplant by race/ethnicity and declines in kidney allocation for candidates aged ≥50 years.


Assuntos
Política de Saúde , Transplante de Rim , Obtenção de Tecidos e Órgãos/organização & administração , Fatores Etários , Seleção do Doador/organização & administração , Sobrevivência de Enxerto , Nível de Saúde , Humanos , Estados Unidos , Listas de Espera
17.
Liver Transpl ; 20(9): 1034-44, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24777647

RESUMO

There are complex risk-benefit tradeoffs with different transplantation strategies for end-stage liver disease patients on renal support. Using a Markov discrete-time state transition model, we compared survival for this group with 3 strategies: simultaneous liver-kidney (SLK) transplantation, liver transplantation alone (LTA) followed by immediate kidney transplantation if renal function did not recover, and LTA followed by placement on the kidney transplant wait list. Patients were followed for 30 years from the age of 50 years. The probabilities of events were synthesized from population data and clinical trials according to Model for End-Stage Liver Disease (MELD) scores (21-30 and >30) to estimate input parameters. Sensitivity analyses tested the impact of uncertainty on survival. Overall, the highest survival rates were seen with SLK transplantation for both MELD score groups (82.8% for MELD scores of 21-30 and 82.5% for MELD scores > 30 at 1 year), albeit at the cost of using kidneys that might not be needed. Liver transplantation followed by kidney transplantation led to higher survival rates (77.3% and 76.4%, respectively, at 1 year) than placement on the kidney transplant wait list (75.1% and 74.3%, respectively, at 1 year). When uncertainty was considered, the results indicated that the waiting time and renal recovery affected conclusions about survival after SLK transplantation and liver transplantation, respectively. The subgroups with the longest durations of pretransplant renal replacement therapy and highest MELD scores had the largest absolute increases in survival with SLK transplantation versus sequential transplantation. In conclusion, the findings demonstrate the inherent tension in choices about the use of available kidneys and suggest that performing liver transplantation and using renal transplantation only for those who fail to recover their native renal function could free up available donor kidneys. These results could inform discussions about transplantation policy.


Assuntos
Doença Hepática Terminal/cirurgia , Nefropatias/terapia , Transplante de Rim/métodos , Transplante de Fígado/métodos , Pesquisa Comparativa da Efetividade , Simulação por Computador , Doença Hepática Terminal/complicações , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/mortalidade , Feminino , Humanos , Nefropatias/complicações , Nefropatias/diagnóstico , Nefropatias/mortalidade , Transplante de Rim/efeitos adversos , Transplante de Rim/mortalidade , Transplante de Fígado/efeitos adversos , Transplante de Fígado/mortalidade , Masculino , Cadeias de Markov , Pessoa de Meia-Idade , Fatores de Risco , Fatores de Tempo , Tempo para o Tratamento , Doadores de Tecidos/provisão & distribuição , Resultado do Tratamento , Listas de Espera
18.
Transplantation ; 95(4): 635-40, 2013 Feb 27.
Artigo em Inglês | MEDLINE | ID: mdl-23288109

RESUMO

BACKGROUND: The United Network for Organ Sharing algorithm for deceased-donor kidney allocation considers only the human leukocyte antigen (HLA)-A, HLA-B, and HLA-DR loci. Although HLA-DQ serologic specificities can be entered as unacceptable antigens, they are assigned only by the identity of the DQß chain, disregarding the role of the similarly polymorphic α chain. DQα/ß combinations result in unique antigenic epitopes, which serve as targets to different antibodies. Therefore, the presence of HLA antibodies to one DQα/ß combination should not preclude negative crossmatch (XM) against another combination. In this retrospective analysis, patients were allowed XM against a particular donor if they had antibodies to some, but not all, DQα/ß allele combinations with the donor serologic HLA-DQ antigens. METHODS: HLA antibody signature was obtained using solid-phase Luminex-based antibody analysis. Results were captured at the high-resolution level (as provided by the positive beads). Potential donors were typed to include information on both HLA-DQA and HLA-DQB alleles. RESULTS: Of the 1130 flow XM assays performed, 147 patients had antibodies to donor serologic HLA-DQ antigens. Thirty-five of those patients had antibodies to an allelic DQα/ß combination within the donor serologic DQ specificity that were different from the donor's DQα/ß, leading to negative flow XM results (24%). Virtual XM, accounting for donor DQα/ß combinations, successfully predicts more than 98% of XM outcomes. CONCLUSIONS: In patients with allelic DQα/ß antibodies, denying the opportunity for XM based on serologically defined unacceptable antigens can disadvantage the patient. Larger cohort studies are required to substantiate our observation. Introducing DQα/ß combination information may increase virtual XM accuracy and organ allocation equity.


Assuntos
Seleção do Doador , Rejeição de Enxerto/prevenção & controle , Sobrevivência de Enxerto , Antígenos HLA-DQ/imunologia , Teste de Histocompatibilidade , Histocompatibilidade , Isoanticorpos/sangue , Transplante de Órgãos/efeitos adversos , Tolerância ao Transplante , Idoso , Algoritmos , Feminino , Rejeição de Enxerto/imunologia , Cadeias alfa de HLA-DQ/imunologia , Cadeias beta de HLA-DQ/imunologia , Humanos , Masculino , Valor Preditivo dos Testes , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento
19.
Clin Transplant ; 26(2): 359-68, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-21995601

RESUMO

BACKGROUND: The Organ Procurement and Transplantation Network (OPTN) requires specific informed consent when "increased risk" (IR) donor organs are utilized. Little is known about kidney transplant candidates' understanding of IR donor kidneys. METHODS: We assessed kidney transplant candidates' perceptions, reasons for accepting or declining a future IR donor kidney offer, and information needs through semi-structured interviews. RESULTS: One hundred and sixty-two (80%) patients participated. Patients perceived IR donors as having poor health (44%), advanced age (38%), and poor kidney quality (24%). Patients (31%) would accept IR donor kidneys to get off dialysis (n=18/50), to improve health by receiving a transplant quickly (n=13/50), and felt that the risk of infection was low (n=10/50). Patients (47%) would decline IR donor kidneys for fear of infection transmission (n=34/76), perceived poor-quality kidneys (n=32/76), and their health was good enough to wait for an average-risk kidney (n=23/76). Undecided patients (22%) needed information about the donation situation. Patients desired information about IR donors, their kidneys, and their impact on patients' health. CONCLUSIONS: Patients confuse risk posed by OPTN-defined IR donors and other non-standard risk donors. Greater efforts are needed to educate kidney transplant candidates about IR donor kidneys and refine terminology used to describe risks to patients.


Assuntos
Compreensão , Transplante de Rim/efeitos adversos , Aceitação pelo Paciente de Cuidados de Saúde , Pacientes/psicologia , Doadores de Tecidos , Adulto , Idoso , Atitude , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Fatores de Risco , Fatores Socioeconômicos , Obtenção de Tecidos e Órgãos , Estados Unidos , Adulto Jovem
20.
Clin Transpl ; : 291-8, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-22755422

RESUMO

Northwestern Memorial Hospital (NMH) has developed a single-center kidney paired donation (KPD) program that has resulted in 74 living donor kidney transplants in the 22 months since its inception. The NMH KPD program has increased access to transplantation among patients who are highly sensitized and has limited the amount of desensitization therapy used for incompatible recipients. Additionally, the incorporation of compatible pairs and non-directed donors into the KPD has allowed hard to match patients on the deceased donor waiting list the opportunity to receive living donor transplants. The number of donor-recipient pairs in the KPD pool has never exceeded forty and average time to transplant from entry into the KPD database until transplantation is less than four months. This demonstrates the capability of KPD to benefit challenging recipients and increase access to living donor transplantation in a timely manner. A multi-disciplinary approach is used to manage, review, and maintain the KPD database and resulting transplants.


Assuntos
Acessibilidade aos Serviços de Saúde/organização & administração , Hospitais Universitários/organização & administração , Transplante de Rim , Doadores Vivos/provisão & distribuição , Obtenção de Tecidos e Órgãos/organização & administração , Chicago , Dessensibilização Imunológica , Seleção do Doador , Feminino , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Sobrevivência de Enxerto , Histocompatibilidade , Humanos , Imunossupressores/uso terapêutico , Transplante de Rim/efeitos adversos , Transplante de Rim/imunologia , Masculino , Objetivos Organizacionais , Seleção de Pacientes , Avaliação de Programas e Projetos de Saúde , Sistema de Registros , Fatores de Tempo , Resultado do Tratamento , Listas de Espera
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