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1.
Am J Kidney Dis ; 83(6): 750-761.e1, 2024 06.
Artículo en Inglés | MEDLINE | ID: mdl-38242424

RESUMEN

RATIONALE & OBJECTIVE: South Asian (SA) Canadians with kidney failure have a 50%-77% lower likelihood of kidney transplant and are less likely to identify potential living donors (LDs). This study aimed to identify health system-, patient-, and community-level barriers and facilitators for accessing LD kidney transplantation in the SA community to inform the development of health system- and community-level interventions to address barriers. STUDY DESIGN: Qualitative study. SETTING & PARTICIPANTS: 20 SA recipients of an LD or deceased-donor kidney transplant, 10 SA LDs, and 41 general SA community members. ANALYTICAL APPROACH: In-depth multilingual interviews were conducted with recipients and LDs. Gender-, language-, and age-stratified focus groups were conducted with general SA community members. Summative content analysis was used to analyze the data. RESULTS: Hesitancy in approaching potential donors, fear about the health of potential LDs, information gaps, language barriers, and challenges evaluating out-of-country donors were highlighted as significant barriers by recipients, and financial concerns and information gaps were identified by donors. Cultural barriers in the SA community were highlighted by donors, recipients, and community members as critical factors when considering donation and transplant; women and elderly SA Canadians highlighted nuanced challenges. Participants reported generally a favorable perception of their health care teams, citing SA representation in the teams as important to providing culturally and linguistically sensitive care. LIMITATIONS: Limited geographic, race, and cultural representation and reliance on virtual data collection. CONCLUSIONS: This study highlights several culturally relevant barriers to donation and transplant that are potentially modifiable through patient-, health system-, and community-focused engagement and education.


Asunto(s)
Trasplante de Riñón , Donadores Vivos , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Adulto Joven , Canadá , Barreras de Comunicación , Grupos Focales , Accesibilidad a los Servicios de Salud , Fallo Renal Crónico/cirugía , Fallo Renal Crónico/etnología , Fallo Renal Crónico/terapia , Investigación Cualitativa , Obtención de Tejidos y Órganos , Personas del Sur de Asia
2.
World J Urol ; 42(1): 161, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-38488940

RESUMEN

PURPOSE: Accurate surgical reconstruction of arterial vascular supply is a crucial part of living kidney transplantation (LDKT). The presence of multiple renal arteries (MRA) in grafts can be challenging. In the present study, we investigated the impact of ligation versus anastomosis of small accessory graft arteries on the perioperative outcome. METHODS: Clinical and radiological outcomes of 51 patients with MRA out of a total of 308 patients who underwent LDKT with MRA between 2011 and 2020 were stratified in two groups and analyzed. In group 1 (20 patients), ligation of accessory arteries (ARAs) and group 2 (31 patients) anastomosis of ARAs was performed. RESULTS: Significant differences were observed in the anastomosis-, surgery-, and warm ischemia time (WIT) in favor of group 1. Students t-test showed comparable serum creatinine levels of 2.33 (± 1.75) to 1.68 (± 0.83) mg/dL in group 1 and 2.63 (± 2.47) to 1.50 (± 0.41) mg/dL in group 2, were seen from 1 week to 1 year after transplant. No increased rates of Delayed graft function (DGF), primary transplant dysfunction and transplant rejection were seen, but graft loss and revision rates were slightly higher when the ARAs were ligated. Analysis of Doppler sonography revealed that segmental perfusion deficits tend to regenerate during the clinical course. CONCLUSION: Ligation of smaller accessory renal arteries may not affect the outcome of living kidney transplantation, except for a minor increase in the reoperation rate. Segmental perfusion deficits of the graft seem to regenerate in most cases as seen in Doppler sonography.


Asunto(s)
Trasplante de Riñón , Humanos , Trasplante de Riñón/efectos adversos , Arteria Renal/cirugía , Donadores Vivos , Estudios Retrospectivos , Supervivencia de Injerto , Riñón/diagnóstico por imagen , Riñón/cirugía , Riñón/irrigación sanguínea , Resultado del Tratamiento
3.
Clin Exp Nephrol ; 2024 Jul 18.
Artículo en Inglés | MEDLINE | ID: mdl-39023822

RESUMEN

BACKGROUND: The clinical importance of nutrition and inflammation in patients with end-stage renal disease is well established. In this study, we investigated the role of nutritional and inflammatory indicators in the patient outcomes of living donor kidney transplant recipients. METHODS: We included 204 consecutive patients who underwent kidney transplantation at our institute between 2003 and 2022. We retrospectively reviewed medical charts to obtain clinical information. Six nutritional indicators and two inflammatory indicators were assessed. Patient outcomes were investigated, and predictive factors were explored. RESULTS: The median patient age and follow-up period were 48 years and 99 months, respectively. The cohort included patients with preoperative malnutrition and microinflammation. No significant differences in graft survival were identified according to nutritional and inflammatory indicators, whereas the survival index, controlled nutritional status, and C-reactive protein levels were associated with patient survival. The survival index was an independent indicator of survival and death in patients with functioning grafts (P = 0.047 and P = 0.013, respectively). Furthermore, the C-reactive protein level could distinguish between low and high mortality risks in patients with good nutrition (P = 0.019). CONCLUSIONS: Our findings suggest that nutrition and inflammation indicators play important roles in predicting outcomes in living donor kidney transplantation recipients. Further research is warranted to establish optimal management strategies.

4.
Br J Clin Pharmacol ; 89(12): 3629-3636, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37548047

RESUMEN

AIMS: Ischemia-reperfusion injury (IRI) during kidney transplant procedures is associated with adverse outcome. Alkaline phosphatase (AP) is an enzyme that has the potential to dampen IRI. Prior to this study, it had not been tested in the setting of kidney transplantation. This study aimed to evaluate the safety and feasibility of peri-procedural AP administration in living donor kidney transplantation. METHODS: In this double blind, randomized, placebo-controlled, single-center pilot study, all eligible recipients of living donor kidneys were asked to give informed consent. AP (bRESCAP) or a placebo was administered intravenously over 24 hours after the transplantation procedure. The primary outcome-graft function at 1 year-was represented by iohexol measured glomerular filtration rate (mGFR). Serum and urine biomarkers within seven days after surgery were used as surrogate markers of kidney function and injury. RESULTS: Eleven patients were enrolled of whom five were treated with bRESCAP and six with placebo. After 1 year, mGFR was not different between groups. No specific adverse events were observed in the bRESCAP group. Urine expression of injury biomarkers CCL14, NGAL and Cystatin C was lower in the bRESCAP group at day seven. This was statistically significant. CONCLUSION: This study illustrates that bRESCAP treatment is feasible in kidney transplantation, might have a dampening effect on IRI induced renal inflammation, and raises no safety concerns. Future research will evaluate the effects of bRESCAP treatment in donation after circulatory death kidney transplantation where IRI is more pronounced.


Asunto(s)
Trasplante de Riñón , Daño por Reperfusión , Humanos , Trasplante de Riñón/efectos adversos , Fosfatasa Alcalina , Proyectos Piloto , Donadores Vivos , Estudios de Factibilidad , Riñón , Daño por Reperfusión/etiología , Biomarcadores
5.
Clin Transplant ; 37(10): e15064, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37398996

RESUMEN

INTRODUCTION: Racial/ethnic disparities in living donor kidney transplantation (LDKT) are a persistent challenge. Although nearly all directed donations are from members of patients' social networks, little is known about which social network members take steps toward living kidney donation, which do not, and what mechanisms contribute to racial/ethnic LDKT disparities. METHODS: We describe the design and rationale of the Friends and Family of Kidney Transplant Patients Study, a factorial experimental fielding two interventions designed to promote LKD discussions. Participants are kidney transplant candidates at two centers who are interviewed and delivered an intervention by trained center research coordinators. The search intervention advises patients on which social network members are most likely to be LKD contraindication-free; the script intervention advises patients on how to initiate effective LKD discussions. Participants are randomized into four conditions: no intervention, search only, script only, or both search and script. Patients also complete a survey and optionally provide social network member contact information so they can be surveyed directly. This study will seek to enroll 200 transplant candidates. The primary outcome is LDKT receipt. Secondary outcomes include live donor screening and medical evaluations and outcomes. Tertiary outcomes include LDKT self-efficacy, concerns, knowledge, and willingness, measured before and after the interventions. CONCLUSION: This study will assess the effectiveness of two interventions to promote LKD and ameliorate Black-White disparities. It will also collect unprecedented information on transplant candidates' social network members, enabling future work to address network member structural barriers to LKD.


Asunto(s)
Fallo Renal Crónico , Trasplante de Riñón , Humanos , Amigos , Riñón , Recolección de Tejidos y Órganos , Donadores Vivos
6.
Clin Transplant ; 37(11): e15069, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37410577

RESUMEN

INTRODUCTION: Grafts with multiple renal arteries (MRAs) were historically considered a relative contraindication to transplantation due to the higher risk of vascular and urologic complications. This study aimed to evaluate graft and patient survival between single renal artery (SRA) and MRA living-donor kidney transplants. METHODS: An electronic literature search was conducted on PubMed, EMBASE, and Scopus for prospective or retrospective studies comparing SRA versus MRA in living donor renal transplantation, with the provision of Kaplan-Meier curves for recipient overall survival (OS) or graft survival (GS). A graphical reconstructive algorithm was used to obtain OS and GS of individual patients, which was then pooled under random-effects individual patient data (IPD) meta-analysis using Cox-models to determine hazard ratios (HRs) and 95% confidence intervals (CIs). Meta-regression of baseline covariates versus HRs of OS and GS was performed for variables reported in 10 or more studies. RESULTS: Fourteen studies were retrieved, of which 13 (8400 patients) reported OS and 9 (6912 patients) reported GS. There were no significant differences in OS (shared-frailty HR = .94, 95%CI = .85-1.03, p = .172) or GS (shared-frailty HR = .95, 95%CI = .83-1.08, p = .419) between SRA and MRA. This comparison remained non-significant even when restricted to open- or laparoscopic-only studies. Meta-regression yielded no significant associations of GS with donor age, recipient age, and percentage of double renal arteries within the MRA arm. CONCLUSIONS: The similar rates of GS and OS between MRA and SRA grafts suggest that there is no need for discrimination between the two when evaluating donors for nephrectomy.


Asunto(s)
Fragilidad , Enfermedades Renales , Trasplante de Riñón , Enfermedades Vasculares , Humanos , Trasplante de Riñón/efectos adversos , Arteria Renal/cirugía , Donadores Vivos , Estudios Retrospectivos , Estudios Prospectivos , Resultado del Tratamiento , Riñón/cirugía , Supervivencia de Injerto
7.
Transpl Int ; 36: 10795, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36895551

RESUMEN

This study analyzed survey results regarding awareness of living minors' organ donation. The questionnaires focused on changes in how respondents felt about donations by living minors after eliciting the uncertainty of long-term outcomes for living donors and recipients. The respondents were categorized as minors, adults affiliated with non-medical jobs (Non-Meds), and adults affiliated with medical jobs (Meds). The rates of awareness of living organ donation were significantly different; minors at 86.2%, non-Meds at 82.0%, and Meds at 98.7% (p < 0.001). Only 41.4% of Minors and 32.0% of Non-Meds were aware of organ donation by minors, while 70.3% of Meds were (p < 0.001). The response rate of opposition to organ donation by minors was highest for Meds and remained the same before and after (54.4%-57.7%, p = 0.311). However, the opposition rate in Non-Meds significantly increased (32.4%-46.7%) after learning about the uncertainty of long-term outcomes (p = 0.009). The study found that Non-Meds lacked adequate knowledge regarding organ donation by minors and their potential lethal outcomes. Their attitudes toward organ donation by minors could be changed by giving structured information. It is necessary to provide exact information and raise social awareness regarding organ donation by living minors.


Asunto(s)
Trasplante de Órganos , Obtención de Tejidos y Órganos , Adulto , Humanos , Donadores Vivos , Encuestas y Cuestionarios , Incertidumbre , Conocimientos, Actitudes y Práctica en Salud , Donantes de Tejidos
8.
Pediatr Nephrol ; 38(1): 291-297, 2023 01.
Artículo en Inglés | MEDLINE | ID: mdl-35482098

RESUMEN

BACKGROUND: This study aimed to evaluate the change in graft function in two groups stratified by the estimated glomerular filtration rate (eGFR) at 1 month after transplantation (eGFR-1 M) in pediatric living donor kidney transplant recipients. METHODS: Forty-three pediatric recipients were classified as those with an eGFR-1 M ≥ 90 mL/min/1.73 m2 (n = 19; high eGFR group) or those with an eGFR-1 M of 60-89 mL/min/1.73 m2 (n = 24; middle eGFR group). In the two groups, changes in the eGFR were retrospectively evaluated for 5 years after kidney transplantation. RESULTS: The mean recipient age at transplantation in the high/middle eGFR group was 6.1 ± 3.4/7.8 ± 4.0 years (P = 0.14). The mean eGFR-1, -12, and -60 M (mL/min/1.73 m2) in the high/middle eGFR group were 106.8 ± 2.99/78.5 ± 1.52 (P < 0.001), 79.3 ± 3.22/62.7 ± 2.38 (P < 0.001), and 73.1 ± 4.16/59.2 ± 2.79 (P = 0.006), respectively. The change in the mean eGFR remained mostly parallel in the two groups. In both groups, the eGFR significantly decreased only between 1 and 12 months after transplantation (P < 0.0001). Approximately 70% of the patients had an eGFR-60 M ≥ 60 mL/min/1.73 m2. CONCLUSIONS: The high and middle eGFR groups showed a rapid decline in the eGFR by 1 year after transplantation, but the change thereafter was gradual. In pediatric living donor kidney transplant recipients, the eGFR was relatively well maintained up to 5 years after transplantation. A higher resolution version of the Graphical abstract is available as Supplementary information.


Asunto(s)
Trasplante de Riñón , Humanos , Niño , Preescolar , Trasplante de Riñón/efectos adversos , Donadores Vivos , Estudios Retrospectivos , Resultado del Tratamiento , Riñón , Tasa de Filtración Glomerular , Supervivencia de Injerto
9.
BMC Anesthesiol ; 23(1): 263, 2023 08 05.
Artículo en Inglés | MEDLINE | ID: mdl-37543574

RESUMEN

BACKGROUND: International guidelines have recommended preemptive kidney transplantation (KT) as the preferred approach, advocating for transplantation before the initiation of dialysis. This approach is advantageous for graft and patient survival by avoiding dialysis-related complications. However, recipients of preemptive KT may undergo anesthesia without the opportunity to optimize volume status or correct metabolic disturbances associated with end-stage renal disease. In these regard, we aimed to investigate the anesthetic events that occur more frequently during preemptive KT compared to nonpreemptive KT. METHODS: This is a single-center retrospective study. Of the 672 patients who underwent Living donor KT (LDKT), 388 of 519 who underwent nonpreemptive KT were matched with 153 of 153 who underwent preemptive KT using propensity score based on preoperative covariates. The primary outcome was intraoperative hypotension defined as area under the threshold (AUT), with a threshold set at a mean arterial blood pressure below 70 mmHg. The secondary outcomes were intraoperative metabolic acidosis estimated by base excess and serum bicarbonate, electrolyte imbalance, the use of inotropes or vasopressors, intraoperative transfusion, immediate graft function evaluated by the nadir creatinine, and re-operation due to bleeding. RESULTS: After propensity score matching, we analyzed 388 and 153 patients in non-preemptive and preemptive groups. The multivariable analysis revealed the AUT of the preemptive group to be significantly greater than that of the nonpreemptive group (mean ± standard deviation, 29.7 ± 61.5 and 14.5 ± 37.7, respectively, P = 0.007). Metabolic acidosis was more severe in the preemptive group compared to the nonpreemptive group. The differences in the nadir creatinine value and times to nadir creatinine were statistically significant, but clinically insignificant. CONCLUSION: Intraoperative hypotension and metabolic acidosis occurred more frequently in the preemptive group during LDKT. These findings highlight the need for anesthesiologists to be prepared and vigilant in managing these events during surgery.


Asunto(s)
Anestesia , Fallo Renal Crónico , Trasplante de Riñón , Humanos , Estudios Retrospectivos , Creatinina , Puntaje de Propensión , Supervivencia de Injerto , Donadores Vivos , Fallo Renal Crónico/cirugía , Anestesia/efectos adversos
10.
Soc Sci Res ; 113: 102888, 2023 07.
Artículo en Inglés | MEDLINE | ID: mdl-37230706

RESUMEN

The network perspective on social capital decomposes it into ego's network size, alters' relevant resources, and social factors moderating access to alters' resources, but rarely examines how it is distributed across relationship types. Using this approach, I investigate the situationally-relevant social capital relationship distribution and its association with health-related social support, with an application to the living kidney donor relationship distribution. Analyzing an original survey of transplant candidates (N = 72) and their reports on their family and friends (N = 1548), I compare the tie count, donation-relevant biomedical resource, and tie strength relationship distributions to administrative data on the national distribution of living kidney donor relationships. I find that the tie strength relationship distribution matches the completed living kidney donor relationship distribution far better than the tie count and donation-relevant biomedical resource relationship distributions. These conclusions are upheld in race- and gender-stratified analyses and are robust across alternative approaches.


Asunto(s)
Trasplante de Riñón , Capital Social , Humanos , Factores Sociales , Donadores Vivos , Relaciones Interpersonales
11.
Transpl Infect Dis ; 24(3): e13845, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35505462

RESUMEN

BACKGROUND: Although many transplant programs have been forced to suspend living donor transplants due to the emergence of coronavirus disease (COVID-19), there are relatively few real-time databases to assess center-level transplant activities. We aimed to delineate the actual impact of COVID-19 on living donor transplant programs and the resumption process in Japan. METHODS: In a nationwide survey, questionnaires were sent to 32 liver transplant programs that had performed at least more than one case of living donor liver transplantation in 2019 and 132 kidney transplant programs that had performed more than one living donor kidney transplantation in 2018. RESULTS: Thirty-one (96.9%) and 125 (94.7%) liver and kidney transplant programs responded, respectively. In the early pandemic period, 67.7% (21/31) of liver programs and 29.8% (37/125) of kidney programs were able to maintain transplant activities similar to those during the pre-pandemic period. After temporal suspension, 58.1% of kidney programs resumed their transplant activity after the number of local COVID-19 cases peaked. Establishing institutional COVID-19 screening, triage, and therapeutic management protocols was mandatory to resume transplant activity for 64.5% and 67.7% of liver and kidney programs, respectively. In the future wave of COVID-19, 67.7% of liver programs would be affected by institutional COVID-19 intensive care unit-bound patient numbers, and 55.7% of kidney programs would stop if hospital-acquired severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection spreads. CONCLUSIONS: THIS NATIONWIDE SURVEY REVEALED FOR THE FIRST TIME HOW LIVING DONOR LIVER AND KIDNEY: transplant programs changed in response to the COVID-19 pandemic in a country where living donor transplantations are predominant.


Asunto(s)
COVID-19 , Trasplante de Riñón , Trasplante de Hígado , COVID-19/epidemiología , Humanos , Japón/epidemiología , Trasplante de Riñón/efectos adversos , Trasplante de Hígado/métodos , Donadores Vivos , Pandemias/prevención & control , SARS-CoV-2
12.
Transpl Int ; 34(12): 2769-2780, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34633715

RESUMEN

We evaluated the temporal trend of preemptive kidney transplantation (KT) and the effect of pretransplant dialysis duration on post-transplant outcomes. This was a nationwide cohort study of the first-time 3392 living donor KT (LDKT) recipients (2014-2019). The annual changes in proportion of preemptive KT, factors associated with preemptive KT, and post-transplant outcomes were analyzed. Preemptive KT was performed in 816 (24.1%) patients. Annual trend analysis revealed gradual decrease in preemptive KT over time (P = 0.042). Among the underlying causes of preemptive KT, the proportion of diabetes increased and that of glomerulonephritis decreased during the study period. Glomerulonephritis as the primary renal disease was a predictor of preemptive KT. Patients with pretransplant dialysis >6 months showed increased graft failure risk than preemptive KT in the subdistribution of hazard model for competing risk (adjusted hazard ratio [aHR], 2.53; 95% confidence interval [CI], 1.09-5.87; P = 0.031) and in propensity score-matched analysis (aHR, 2.45; 95% CI, 1.02-5.92; P = 0.034); however, pretransplant dialysis ≤6 months showed comparable graft survival with preemptive KT in both analyses. Preemptive KT declined over successive years, associated with an increase in diabetes and a decrease in glomerulonephritis as underlying causes of KT. Short period of dialysis less than 6 months does not affect graft survival compared with preemptive KT; however, longer dialysis decreases graft survival.


Asunto(s)
Fallo Renal Crónico , Trasplante de Riñón , Estudios de Cohortes , Supervivencia de Injerto , Humanos , Fallo Renal Crónico/cirugía , Estudios Prospectivos , Diálisis Renal , República de Corea , Estudios Retrospectivos , Resultado del Tratamiento
13.
Transpl Int ; 34(4): 669-680, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33527555

RESUMEN

Recent reports suggest that bridge-donor reneging is rare (1.5%) in non-simultaneous kidney exchange chains. However, in developing countries, the non-directed donors who would be needed to initiate chains are unavailable, and furthermore, limited surgical space and resources restrain the feasibility of simultaneous kidney exchange cycles. Therefore, the aim of this study was to evaluate the bridge-donor reneging rate during non-simultaneous kidney exchange cycles (NSKEC) in a prospective single-center cohort study (n = 67). We describe the protocol used to prepare co-registered donor-recipient pairs for non-simultaneous surgeries, in an effort to minimize the reneging rate. In addition, in order to protect any recipients who might be left vulnerable by this arrangement, we proposed the use of standard criteria deceased-donor kidneys to rectify the injustice in the event of any bridge-donor reneging. We report 17 successful NSKEC resulting in 67 living-donor kidney transplants (LDKT) using 23 bridge-donors without donor renege and no intervening pairs became unavailable. We propose that NSKEC could increase LDKT, especially for difficult-to-match sensitized pairs (25 of our 67 pairs) in countries with limited transplantation resources. Our study confirms that NSKEC can be safely performed with careful patient-donor selection and non-anonymous kidney exchanges.


Asunto(s)
Donadores Vivos , Obtención de Tejidos y Órganos , Sistema del Grupo Sanguíneo ABO , Estudios de Cohortes , Selección de Donante , Humanos , Riñón , Estudios Prospectivos
14.
Clin Exp Nephrol ; 25(12): 1367-1374, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34273040

RESUMEN

BACKGROUND: Soluble Klotho (sKl), the free form of membrane-bound Klotho predominantly expressed in the kidney, is detectable in serum and may have multiple pleiotropic effects. Patients with end-stage kidney disease are possibly sKl deficient, and kidney transplantation is the treatment of choice in these patients; however, little is known about changes in posttransplant sKl level and the factors influencing these changes. METHODS: We conducted a prospective longitudinal study to examine changes in posttransplant sKl level in recipients for 12 months after living-donor kidney transplantation and analyzed correlations between posttransplant changes in sKl levels and various influencing factors in both recipients and donors. RESULTS: 29 kidney transplant recipients and their living donors were included for analysis. The results showed that sKl levels transiently decreased at 1 week posttransplant but progressively increased thereafter for 12 months. Multivariable linear regression analysis showed that body surface area-adjusted donor sKl levels were associated with posttransplant increases in recipient sKl levels at 12 months. In addition, pretransplant recipient sKl levels and body surface area-adjusted donor sKl levels were identified as an independent predictor of 12-month posttransplant sKl levels. CONCLUSION: Pretransplant sKl levels in both kidney recipients and living donors are a strong determinant of sKl levels after kidney transplantation.


Asunto(s)
Fallo Renal Crónico/cirugía , Trasplante de Riñón , Proteínas Klotho/sangre , Donadores Vivos , Receptores de Trasplantes , Adulto , Anciano , Biomarcadores/sangre , Femenino , Humanos , Fallo Renal Crónico/sangre , Fallo Renal Crónico/diagnóstico , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Tiempo , Resultado del Tratamiento
15.
BMC Nephrol ; 22(1): 367, 2021 11 06.
Artículo en Inglés | MEDLINE | ID: mdl-34742246

RESUMEN

BACKGROUND: Safety and survival during and after donor nephrectomy (DN) are one of the main concerns in living kidney donors (LKDs). Therefore, kidney (left/right) to be procured should be determined after considering the difficulty of DN, as well as the preservation of remnant renal function (RRF). In this prospective study, we investigated the roles of computed tomography volumetry (CTV) in split renal function (SRF) and established a predictive model for RRF in LKDs. METHODS: We assessed 103 LKDs who underwent DN at our institute. The Volume Analyzer SYNAPSE VINCENT image analysis system were used as CTV. RRF was defined as the estimated glomerular filtration rate (eGFR) 12 months after DN. The association between various factors measured by CTV and RRF were investigated, and a role of CTV on prediction for RRF was assessed. RESULTS: The median age and the preoperative eGFR were 58 years and 80.7 mL/min/1.73m2, respectively. Each factor measured by CTV showed an association with RRF. The ratio of remnant renal volume to body surface area (RRV/BSA) could predict RRF. In addition, RRV/BSA could predict RRF more accurately when used together with age and 24-h creatinine clearance (CrCl). CONCLUSIONS: Our findings suggest that RRV/BSA measured by CTV can play an important role in predicting RRF, and a comprehensive assessment including age and CrCl is important to determine the kidney to be procured.


Asunto(s)
Trasplante de Riñón , Riñón/anatomía & histología , Riñón/fisiología , Donadores Vivos , Tamaño de los Órganos , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Tasa de Filtración Glomerular , Humanos , Riñón/diagnóstico por imagen , Corteza Renal/anatomía & histología , Corteza Renal/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Nefrectomía , Pronóstico , Estudios Prospectivos , Cintigrafía , Radiofármacos , Pentetato de Tecnecio Tc 99m , Tomografía Computarizada por Rayos X , Adulto Joven
16.
Am J Kidney Dis ; 76(5): 616-623, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32668318

RESUMEN

RATIONALE & OBJECTIVE: Compared with recipients of blood group ABO-compatible (ABOc) living donor kidney transplants (LDKTs), recipients of ABO-incompatible (ABOi) LDKTs have higher risk for graft loss, particularly in the first few weeks after transplantation. However, the decision to proceed with ABOi LDKT should be based on a comparison of the alternative: waiting for future ABOc LDKTs (eg, through kidney paired exchange) or for a deceased donor kidney transplant (DDKT). We sought to evaluate the patient survival difference between ABOi LDKTs and waiting for an ABOc LDKT or an ABOc DDKT. STUDY DESIGN: Retrospective cohort study of adults in the Scientific Registry of Transplant Recipients. SETTING & PARTICIPANTS: 808 ABOi LDKT recipients and 2,423 matched controls from among 245,158 adult first-time kidney-only waitlist registrants who did not receive an ABOi LDKT and who remained on the waitlist or received either an ABOc LDKT or an ABOc DDKT, 2002 to 2017. EXPOSURE: Receipt of ABOi LDKT. OUTCOME: Death. ANALYTICAL APPROACH: We compared mortality among ABOi LDKT recipients versus a weighted matched comparison population using Cox proportional hazards regression and Cox models that accommodated for changing hazard ratios over time. RESULTS: Compared with matched controls, ABOi LDKT was associated with greater mortality risk in the first 30 days posttransplantation (cumulative survival of 99.0% vs 99.6%) but lower mortality risk beyond 180 days posttransplantation. Patients who received an ABOi LDKT had higher cumulative survival at 5 and 10 years (90.0% and 75.4%, respectively) than similar patients who remained on the waitlist or received an ABOc LDKT or ABOc DDKT (81.9% and 68.4%, respectively). LIMITATIONS: No measurement of ABO antibody titers in recipients; eligibility of participants for kidney paired donation is unknown. CONCLUSIONS: Transplant candidates who receive an ABOi LDKT and survive more than 180 days posttransplantation experience a long-term survival benefit compared to remaining on the waitlist to potentially receive an ABOc kidney transplant.


Asunto(s)
Sistema del Grupo Sanguíneo ABO/inmunología , Rechazo de Injerto/mortalidad , Trasplante de Riñón/mortalidad , Donadores Vivos , Sistema de Registros , Receptores de Trasplantes , Adulto , Femenino , Estudios de Seguimiento , Rechazo de Injerto/inmunología , Supervivencia de Injerto , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Tasa de Supervivencia/tendencias , Estados Unidos/epidemiología
17.
Clin Transplant ; 34(11): e14064, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32808320

RESUMEN

The evaluation and care of non-US citizen, non-US residents who wish to come to the United States to serve as international living kidney donors (ILKDs) can pose unique challenges. We surveyed US transplant programs to better understand practices related to ILKD care. We distributed the survey by email and professional society list-servs (Fall 2018, assessing 2017 experience). Eighty-five programs responded (36.8% program response rate), of which 80 considered ILKD candidates. Only 18 programs had written protocols for ILKD evaluation. Programs had a median of 3 (range: 0,75) ILKD candidates who initiated contact during the year, from origin countries spanning 6 continents. Fewer (median: 1, range: 0,25) were approved for donation. Program-reported reasons for not completing ILKD evaluations included visa barriers (58.6%), inability to complete evaluation (34.3%), concerns regarding follow-up (31.4%) or other healthcare access (28.6%), and financial impacts (21.4%). Programs that did not evaluate ILKDs reported similar concerns. Staff time required to evaluate ILKDs was estimated as 1.5-to-3-times (47.9%) or >3-times (32.9%) that needed for domestic candidates. Among programs accepting ILKDs, on average 55% reported successful completion of 1-year follow-up. ILKD evaluation is a resource-intensive process with variable outcomes. Planning and commitment are necessary to care for this unique candidate group.


Asunto(s)
Trasplante de Riñón , Humanos , Riñón , Donadores Vivos , Encuestas y Cuestionarios , Estados Unidos
18.
Clin Transplant ; 34(3): e13792, 2020 03.
Artículo en Inglés | MEDLINE | ID: mdl-31991481

RESUMEN

End-stage kidney disease patients in the United States may have family members or friends who are not US citizens or residents but are willing to serve as their living kidney donor in the United States ("international donors"). In July 2017, the American Society for Transplantation (AST) Live Donor Community of Practice (LDCOP) convened a multidisciplinary workgroup of experts in living donation care, including coordinators, social workers, donor advocates, administrators, and physicians, to evaluate educational gaps related to the evaluation and care of international donors. The evaluation of international living donor candidates is a resource-intensive process that raises key considerations for assessing risk of exploitation/inducement and addressing communication barriers, logistics barriers, and access to care in their home country. Through consensus-building discussions, we developed recommendations related to: (a) establishing program guidelines for international donor candidate evaluation and selection; (b) initial screening; (c) logistics planning; (d) comprehensive evaluation; and (e) postdonation care and follow-up. These recommendations are not intended to direct formal policy, but rather as guidance to help programs more efficiently and effectively structure and execute evaluations and care coordination. We also offer recommendations for research and advocacy to optimize the care of this unique group of living donors.


Asunto(s)
Trasplante de Riñón , Donadores Vivos , Consenso , Humanos , Estados Unidos
19.
Transpl Int ; 33(11): 1417-1423, 2020 11.
Artículo en Inglés | MEDLINE | ID: mdl-32654198

RESUMEN

We retrospectively compared the post-transplantation graft survival and the donor's estimated glomerular filtration rates (eGFRs) following living donor kidney transplantations (LDKTs) involving medically complex living donors (MCLDs) (the elderly and patients with obesity, hypertension, diabetes mellitus, or reduced renal function) and standard living donors (SLDs). The clinical data on patients who underwent LDKTs at our institution from 2006-2019, including 192 SLDs and 99 MCLDs, were evaluated. Regarding recipients, the log-rank test and multivariable Cox proportional hazards analyses showed a higher incidence of overall and death-censored graft loss in the recipients who received kidneys from MCLDs (Hazard ratio = 2.16 and 3.25, P = 0.015 and 0.004, respectively), after adjusting for recipient-related variables including age, sex, duration of dialysis, ABO compatibility, and donor-specific antibody positivity. Regarding donors, a linear mixed model showed significantly lower postdonation eGFRs (-2.25 ml/min/1.73 m2 , P = 0.048) at baseline in MCLDs than SLDs, but comparable change (difference = 0.01 ml/min/1.73 m2 /year, P = 0.97). In conclusion, although kidneys from MCLDs are associated with impaired graft survival, the donation did not adversely affect the MCLDs' renal health in at least the short-term. LDKTs involving carefully selected MCLDs would be an acceptable alternative for recipients with no SLDs.


Asunto(s)
Trasplante de Riñón , Donadores Vivos , Anciano , Rechazo de Injerto , Supervivencia de Injerto , Humanos , Sistema de Registros , Estudios Retrospectivos
20.
J Med Ethics ; 46(2): 144-150, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31537615

RESUMEN

In this article, we perform a thought experiment about living donor kidney transplantation. If a living kidney donor becomes in need of renal replacement treatment due to dysfunction of the remaining kidney after donation, can the donor ask the recipient to give back the kidney that had been donated? We call this problem organ restitution and discussed it from the ethical viewpoint. Living organ transplantation is a kind of 'designated donation' and subsequently has a contract-like character. First, assuming a case in which original donor (A) wishes the return of the organ which had been transplanted into B, and the original recipient (B) agrees, organ restitution will be permissible based on contract-like agreement. However, careful and detailed consideration is necessary to determine whether this leaves no room to question the authenticity of B's consent. Second, if B offers to give back the organ to A, then B's act is a supererogatory act, and is praiseworthy and meritorious. Such an offer is a matter of virtue, not obligation. Third, if A wishes B to return the organ, but B does not wish/allow this to happen, it is likely difficult to justify returning the organ to A by violating B's right to bodily integrity. But B's refusal to return the donated organ cannot be deemed praiseworthy, because B forgets the great kindness once received from A. Rather than calling this an obligation, we encourage B to consider such virtuous conduct.


Asunto(s)
Análisis Ético , Trasplante de Riñón/ética , Donadores Vivos/ética , Obtención de Tejidos y Órganos/ética , Humanos , Riñón/cirugía , Virtudes
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