Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 35
Filtrar
Más filtros

Banco de datos
País/Región como asunto
Tipo del documento
Intervalo de año de publicación
1.
Artículo en Inglés | MEDLINE | ID: mdl-38900090

RESUMEN

PURPOSE OF REVIEW: The major fighting activities in the Syrian conflict have subsided, but the country continues to deal with significant political, economic, and psychosocial consequences that gravely impact the healthcare system, including the care of patients with kidney disease. The purpose of this manuscript is to review some of the problems faced by kidney patients in postconflict Syria and their available and proposed remedies. RECENT FINDINGS: Many challenges, such as unfair, poorly planned, and poorly organized distribution of resources, suboptimal quality-monitoring infrastructure, psychosocial barriers, and workforce shortages, impede the delivery of quality care and negatively impact outcomes. The negative impact of these problems is not uniform and tends to affect certain areas more than others because of geopolitical factors imposed by the conflict. SUMMARY: After prolonged conflicts, healthcare resources remain limited for prolonged periods, leading to inadequate care, poor outcomes, and worsening inequities. Involvement of the international community and expatriate nephrologists is essential to guide care delivery and improve outcomes. The lessons learned from the Syrian conflict apply to many limited resources and disaster situations.

2.
Am J Kidney Dis ; 2024 Jun 06.
Artículo en Inglés | MEDLINE | ID: mdl-38851445

RESUMEN

The global burden of kidney disease is increasing, paralleled by a rising number of natural and man-made crises. During these tumultuous times, accessing vital health care resources becomes challenging, posing significant risks to individuals, particularly those with kidney disease. This review delves into the impact of crises on kidney disease, with a particular focus on acute kidney injury (AKI), kidney failure, and kidney transplant. Patients experiencing crush injuries leading to AKI may encounter delayed diagnosis due to the chaotic nature of disasters and limited availability of resources. In chronic crises such as conflicts, patients with kidney failure are particularly affected, and deviations from dialysis standards are unfortunately common, impacting morbidity and mortality rates. Additionally, crises also disrupt access to kidney transplants, potentially compromising transplant outcomes. This review underscores the critical importance of preparedness measures and proactive management for kidney disease in crisis settings. Collaborative efforts among government bodies, rescue teams, health care providers, humanitarian agencies, and nongovernmental organizations are imperative to ensure equitable and reasonable care for kidney disease patients during times of crises, with the aim of saving lives and improving outcomes.

3.
Am J Transplant ; 22(3): 898-908, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-34897982

RESUMEN

Kidney allocation trends from deceased donors with acute kidney injury (AKI) have not been characterized since initial Kidney Donor Profile Index reporting in 2012 and its use under the revised Kidney Allocation System (KAS) in 2014. We conducted a retrospective analysis of US registry data to characterize kidney procurement and discard trends in deceased donors with AKI, defined by ≥50% or ≥0.3 mg/dl (≥4.0 mg/dl or ≥200% for stage 3) increase in terminal serum creatinine from admission. From 2010 to 2020, 172 410 kidneys were procured from 93 341 deceased donors 16 years or older; 34 984 kidneys were discarded (17 559 from AKI donors). The proportion of stage 3 AKI donors doubled from 6% (412/6841) in 2010 to 12% (1365/11493) in 2020. Procurement of stage 3 AKI kidneys increased from 51% (423/824) to 80% (2183/2730). While discard of stage 3 AKI kidneys increased from 41% (175/423) in 2010 to 44% (960/2183) in 2020, this increase was not statistically significant in interrupted time-series analysis following KAS implementation (slope difference -0.41 [-3.22, 2.4], and level change 3.09 [-6.4, 12.6]). In conclusion, the absolute number of stage 3 AKI kidneys transplanted has increased. Ongoing high discard rates of these kidneys suggest opportunities for improved utilization.


Asunto(s)
Lesión Renal Aguda , Trasplante de Riñón , Obtención de Tejidos y Órganos , Lesión Renal Aguda/etiología , Selección de Donante , Femenino , Supervivencia de Injerto , Humanos , Riñón , Trasplante de Riñón/efectos adversos , Masculino , Estudios Retrospectivos , Donantes de Tejidos
4.
BMC Nephrol ; 22(1): 26, 2021 01 12.
Artículo en Inglés | MEDLINE | ID: mdl-33435916

RESUMEN

BACKGROUND: Post-Transplant erythrocytosis (PTE) has not been studied in large recent cohorts. In this study, we evaluated the incidence, risk factors, and outcome of PTE with current transplant practices using the present World Health Organization criteria to define erythrocytosis. We also tested the hypothesis that the risk of PTE is greater with higher-quality kidneys. METHODS: We utilized the Deceased Donor Study which is an ongoing, multicenter, observational study of deceased donors and their kidney recipients that were transplanted between 2010 and 2013 across 13 centers. Eryrthocytosis is defined by hemoglobin> 16.5 g/dL in men and> 16 g/dL in women. Kidney quality is measured by Kidney Donor Profile Index (KDPI). RESULTS: Of the 1123 recipients qualified to be in this study, PTE was observed at a median of 18 months in 75 (6.6%) recipients. Compared to recipients without PTE, those with PTE were younger [mean 48±11 vs 54±13 years, p < 0.001], more likely to have polycystic kidney disease [17% vs 6%, p < 0.001], have received kidneys from younger donors [36 ±13 vs 41±15 years], and be on RAAS inhibitors [35% vs 22%, p < 0.001]. Recipients with PTE were less likely to have received kidneys from donors with hypertension [16% vs 32%, p = 0.004], diabetes [1% vs 11%, p = 0.008], and cerebrovascular event (24% vs 36%, p = 0.036). Higher KDPI was associated with decreased PTE risk [HR 0.98 (95% CI: 0.97-0.99)]. Over 60 months of follow-up, only 17 (36%) recipients had sustained PTE. There was no association between PTE and graft failure or mortality, CONCLUSIONS: The incidence of PTE was low in our study and PTE resolved in majority of patients. Lower KDPI increases risk of PTE. The underutilization of RAAS inhibitors in PTE patients raises the possibility of under-recognition of this phenomenon and should be explored in future studies.


Asunto(s)
Trasplante de Riñón , Policitemia/epidemiología , Complicaciones Posoperatorias/epidemiología , Adulto , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Factores de Riesgo , Donantes de Tejidos
5.
BMC Nephrol ; 21(1): 189, 2020 05 20.
Artículo en Inglés | MEDLINE | ID: mdl-32434487

RESUMEN

BACKGROUND: Atypical hemolytic uremic syndrome (aHUS) can result in severe kidney dysfunction, secondary to thrombotic microangiopathy. Eculizumab has been used to treat this disorder, and has resulted in favourable outcomes in both, native and transplanted kidneys. There is limited long term follow up data in kidney transplant recipients (KTRs) who received prevention and treatment with Eculizumab. We report our long term follow up data from our center to address safety and efficacy of this therapy in KTRs. METHODS: We performed a retrospective analysis of KTRs between January 2009 and December 2018. Clinical diagnosis of aHUS established with presence of thrombotic microangiopathy, acute kidney injury, absence of alternate identifiable etiology. We reviewed clinical data, including genetic testing for complement factor mutations, post-transplant course, and response to therapy including therapeutic and prophylactic use of eculizumab. RESULTS: Nineteen patients with aHUS received a total of 36 kidney transplants; 10 of them had 2 or more prior kidney transplants. Median age at time of last transplant was 37 years (range 27-59), 72% were female (n = 14), 78% Caucasian (n = 15), with 61% had live donor transplant (n = 12) as the last transplant. Eculizumab prophylaxis was given to 10/19 (56%) at the time of transplantation, with no aHUS recurrence during the follow up. Median duration of follow up was 46 (range 6-237) months. Mean estimated glomerular filtration rate (eGFR) at the time of last follow up was 59.5 ml/min/m2. No infections secondary to encapsulated organisms or other major infectious complications occurred during the follow up. CONCLUSIONS: Eculizumab prophylaxis is safe and effective in KTRs with aHUS. Long term follow up demonstrates that it may be possible to discontinue prophylaxis carefully in selected patients with no evidence of complement mutations.


Asunto(s)
Anticuerpos Monoclonales Humanizados/uso terapéutico , Síndrome Hemolítico Urémico Atípico/prevención & control , Inactivadores del Complemento/uso terapéutico , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Adolescente , Adulto , Síndrome Hemolítico Urémico Atípico/tratamiento farmacológico , Estudios de Casos y Controles , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Estudios Retrospectivos , Prevención Secundaria , Resultado del Tratamiento , Adulto Joven
6.
BMC Nephrol ; 21(1): 253, 2020 07 02.
Artículo en Inglés | MEDLINE | ID: mdl-32615995

RESUMEN

BACKGROUND: Angiotensin II type 1 receptors (AT1Rs) are expressed on podocytes, endothelial and other cells, and play an essential role in the maintenance of podocyte function and vascular homeostasis. The presence of AT1R antibodies (AT1R-Abs) leads to activation of these receptors resulting in podocyte injury and endothelial cell dysfunction. We assessed the correlation between AT1R-Abs and the risk of post-transplant FSGS. METHODS: This is a retrospective study, which included all kidney transplant recipients with positive AT1R-Abs (≥ 9 units/ml), who were transplanted and followed at our center between 2006 and 2016. We assessed the development of biopsy proven FSGS and proteinuria by urine protein to creatinine ratio of ≥1 g/g and reviewed short and long term outcomes. RESULTS: We identified 100 patients with positive AT1R-Abs at the time of kidney transplant biopsy or proteinuria. 49% recipients (FSGS group) had biopsy-proven FSGS and/or proteinuria and 51% did not (non-FSGS group). Pre-transplant hypertension was present in 89% of the FSGS group compared to 72% in the non-FSGS group, p = 0.027. Of the FSGS group, 43% were on angiotensin converting enzyme inhibitors or angiotensin receptor blockers prior to transplantation, compared to 25.5% in the non-FSGS group, p = 0.06. Primary idiopathic FSGS was the cause of ESRD in 20% of the FSGS group, compared to 6% in the non-FSGS group, p = 0.03. The allograft loss was significantly higher in the FSGS group 63% compared to 39% in non-FSGS. Odds ratio and 95% confidence interval were 2.66 (1.18-5.99), p = 0.017. CONCLUSIONS: Our data suggest a potential association between AT1R-Abs and post-transplant FSGS leading to worse allograft outcome. Therefore, AT1R-Abs may be considered biomarkers for post-transplant FSGS.


Asunto(s)
Anticuerpos/inmunología , Glomeruloesclerosis Focal y Segmentaria/epidemiología , Rechazo de Injerto/epidemiología , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Complicaciones Posoperatorias/epidemiología , Proteinuria/epidemiología , Receptor de Angiotensina Tipo 1/inmunología , Adulto , Femenino , Glomeruloesclerosis Focal y Segmentaria/complicaciones , Glomeruloesclerosis Focal y Segmentaria/inmunología , Glomeruloesclerosis Focal y Segmentaria/terapia , Rechazo de Injerto/inmunología , Rechazo de Injerto/terapia , Humanos , Fallo Renal Crónico/etiología , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias/inmunología , Complicaciones Posoperatorias/terapia , Proteinuria/inmunología , Proteinuria/terapia , Recurrencia , Estudios Retrospectivos
9.
Am J Nephrol ; 48(6): 465-471, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30472700

RESUMEN

BACKGROUND: The prognostic value of the anti-neutrophil cytoplasmic antibody (ANCA) associated glomerulonephritis (GN) classification has been demonstrated in several cohorts with sclerotic class having the worst renal outcome. Relevant published data on factors predicting outcomes in sclerotic ANCA GN is limited. METHODS: Sclerotic ANCA GN patients were recruited from 5 centers worldwide for this retrospective cohort study. We describe the clinical characteristics of this cohort and evaluate predictors of 1-year glomerular filtration rate (GFR) and end-stage renal disease (ESRD). Kidney function at 12 months as measured by Modification of Diet in Renal Disease estimated GFR (eGFR) was modeled by simple and multiple linear regression analyses. We used Cox proportional hazards regression modeling to evaluate ESRD-free survival. RESULTS: Of the 50 patients, 92% were Caucasian and 60% male with a mean age of 61 years. While 72% had renal limited disease, 82% were MPO ANCA positive. Kidney biopsies contained a median of 20 (interquartile range [IQR] 15-34) glomeruli with 96% showing moderate to severe interstitial fibrosis. Overall, 96% of patients received immunosuppressive drug therapy and 16% received plasmapheresis. Treatment response was achieved in all but 1 patient. The median (IQR) eGFR at entry was 14.5 (9-19) mL/min/1.73 m2. Over a median (IQR) follow-up of 33.5 (17-82) months, 26 patients reached ESRD. Ten patients died with 6 of the deaths occurring within the first year of diagnosis. The hazard of progression to ESRD was significantly higher in those with lower GFR at study entry (p = 0.003) and with higher degree of tubular atrophy (p = 0.043). CONCLUSIONS: Renal recovery is rare among sclerotic ANCA GN patients requiring dialysis at entry and 12% of patients died in the first year. Entry GFR and tubular atrophy were significant predictors of GFR at 12 months and renal survival in patients with sclerotic class ANCA GN.


Asunto(s)
Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/mortalidad , Anticuerpos Anticitoplasma de Neutrófilos/sangre , Glomerulonefritis/mortalidad , Fallo Renal Crónico/epidemiología , Riñón/patología , Anciano , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/inmunología , Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos/patología , Anticuerpos Anticitoplasma de Neutrófilos/inmunología , Atrofia/inmunología , Atrofia/patología , Biopsia , Progresión de la Enfermedad , Femenino , Fibrosis , Estudios de Seguimiento , Tasa de Filtración Glomerular , Glomerulonefritis/inmunología , Glomerulonefritis/patología , Humanos , Riñón/irrigación sanguínea , Riñón/inmunología , Fallo Renal Crónico/sangre , Fallo Renal Crónico/inmunología , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Pronóstico , Estudios Retrospectivos , Factores de Riesgo , Análisis de Supervivencia
10.
Biomarkers ; 23(1): 61-69, 2018 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-29034718

RESUMEN

OBJECTIVES AND METHODS: The Furosemide Stress Test (FST) is a novel dynamic assessment of tubular function that has been shown in preliminary studies to predict patients who will progress to advanced stage acute kidney injury, including those who receive renal replacement therapy (RRT). The aim of this study is to investigate if the urinary response to a single intraoperative dose of intravenous furosemide predicts delayed graft function (DGF) in patients undergoing deceased donor kidney transplant. RESULTS: On an adjusted multiple logistic regression, a single 100 mg dose of intraoperative furosemide after the anastomosis of the renal vessels (FST) predicted the need for RRT at 2 and 6 h post kidney transplantation (KT). Recipient urinary output was measured at 2 and 6 h post furosemide administration. In receiver-operating characteristic (ROC) analysis, the FST predicted DGF with an area-under-the curve of 0.85 at an optimal urinary output cut-off of <600 mls at 6 h with a sensitivity of and a specificity of 83% and 74%, respectively. CONCLUSIONS: The FST is a predictor of DGF post kidney transplant and has the potential to identify patients requiring RRT early after KT.


Asunto(s)
Funcionamiento Retardado del Injerto/diagnóstico , Furosemida/administración & dosificación , Trasplante de Riñón/métodos , Donantes de Tejidos , Adulto , Funcionamiento Retardado del Injerto/fisiopatología , Diuréticos/administración & dosificación , Femenino , Humanos , Modelos Logísticos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Pronóstico , Curva ROC , Estudios Retrospectivos
11.
BMC Nephrol ; 19(1): 361, 2018 12 17.
Artículo en Inglés | MEDLINE | ID: mdl-30558559

RESUMEN

BACKGROUND: Therapeutic plasma exchange (TPE) is an important therapy for recurrent focal segmental glomerulosclerosis (rFSGS) post kidney transplant. suPAR has been causally implicated in rFSGS, and shown to be a unique biomarker for the occurrence and progression of chronic kidney disease. This study was targeted to evaluate the application of monitoring suPAR in TPE treated rFSGS. METHODS: A retrospective (n = 19) and a prospective (n = 15) cohort of post transplant FSGS patients treated with TPE and rituximab were enrolled. We measured serum suPAR levels before and after the combined therapies, and assessed the role of suPAR changes on proteinuria reduction and podocyte ß3- integrin activity. RESULTS: Treatment with TPE and rituximab resulted in significant decrease in proteinuria and suPAR levels. Among the variables including baseline suPAR, serum creatinine, proteinuria, eGFR, age at diagnosis, age at transplantation, transplantation numbers, time to recurrence, and TPE course numbers, only the reduction in suPAR levels and baseline proteinuria significantly correlated with the changes in proteinuria after treatment, with the former performed better in predicting proteinuria alteration. Additionally, the mean podocyte ß3 integrin activity significantly decreased after TPE and rituximab treatment (1.10 ± 0.08) as compared to before treatment (1.34 ± 0.08), p < 0.05. Only the reduction in suPAR predicted the response to therapies with an odds ratio of 1.43, 95% CI (1.02, 2.00), p < 0.05. CONCLUSIONS: Serum suPAR levels reduced significantly after TPE and rituximab treatment in post transplant FSGS patients. The reduction in suPAR levels may be utilized to assess the changes in proteinuria and monitor the response to the therapies. Larger, multi-centered prospective studies monitoring serum suPAR levels in TPE managed post transplant FSGS are warranted.


Asunto(s)
Glomeruloesclerosis Focal y Segmentaria/sangre , Glomeruloesclerosis Focal y Segmentaria/terapia , Intercambio Plasmático , Receptores del Activador de Plasminógeno Tipo Uroquinasa/sangre , Adulto , Biomarcadores/sangre , Femenino , Glomeruloesclerosis Focal y Segmentaria/complicaciones , Humanos , Factores Inmunológicos/uso terapéutico , Integrina beta3/metabolismo , Fallo Renal Crónico/etiología , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Masculino , Persona de Mediana Edad , Podocitos/metabolismo , Estudios Prospectivos , Proteinuria/etiología , Recurrencia , Estudios Retrospectivos , Rituximab/uso terapéutico , Resultado del Tratamiento
12.
BMC Nephrol ; 17: 7, 2016 Jan 11.
Artículo en Inglés | MEDLINE | ID: mdl-26754737

RESUMEN

BACKGROUND: Membranoproliferative glomerulonephritis (MPGN) is an uncommon glomerular disorder that may lead to end stage renal disease (ESRD). With new understanding of the disease pathogenesis, the classical classification as MPGN types I, II, III has changed. Data on post-transplant MPGN, in particular with the newly refined classification, is limited. We present our center's experience of MPGN after kidney transplantation using the new classification. METHODS: This is a retrospective study of 34 patients with ESRD due to MPGN who received 40 kidney transplants between 1994 and 2014. We reviewed the available biopsies' data using the new classification. We assessed post transplantation recurrence rate, risk factors of recurrence, the response to therapy and allografts' survival. RESULTS: Median time of follow up was 5.3 years (range 0.5-14 years). Using the new classification, we found that pre-transplant MPGN disease was due to immune complex-mediated glomerulonephritis (ICGN) in 89 % of cases and complement-mediated glomerulonephritis (CGN) in 11 %. Recurrence was detected in 18 transplants (45 %). Living related allografts (P = 0.045), preemptive transplantations (P = 0.018), low complement level (P = 0.006), and the presence of monoclonal gammopathy (P = 0.010) were associated with higher recurrence rate in ICGN cases. Half of the patients with recurrence lost their allografts. The use of ACEi/ARB was associated with a trend toward less allograft loss. CONCLUSIONS: MPGN recurs at a high rate after kidney transplantation. The risk of MPGN recurrence increases with preemptive transplantation, living related donation, low complement level, and the presence of monoclonal gammopathy. Recurrence of MPGN leads to allograft failure in half of the cases.


Asunto(s)
Glomerulonefritis Membranoproliferativa/clasificación , Glomerulonefritis Membranoproliferativa/cirugía , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Adolescente , Adulto , Antagonistas de Receptores de Angiotensina/uso terapéutico , Inhibidores de la Enzima Convertidora de Angiotensina/uso terapéutico , Proteínas del Sistema Complemento/metabolismo , Femenino , Estudios de Seguimiento , Glomerulonefritis Membranoproliferativa/etiología , Glomerulonefritis Membranoproliferativa/terapia , Supervivencia de Injerto , Humanos , Enfermedades del Complejo Inmune/complicaciones , Fallo Renal Crónico/etiología , Donadores Vivos , Masculino , Persona de Mediana Edad , Paraproteinemias/complicaciones , Recurrencia , Estudios Retrospectivos , Factores de Riesgo , Adulto Joven
13.
BMC Nephrol ; 17(1): 181, 2016 11 21.
Artículo en Inglés | MEDLINE | ID: mdl-27871261

RESUMEN

BACKGROUND: T-cell-mediated rejection (TCMR) remains a major cause of kidney allograft failure. The characterization of T-cell repertoire in different immunological disorders has emerged recently as a novel tool with significant implications. We herein sought to characterize T-cell repertoire using next generation sequencing to diagnose TCMR. METHODS: In this prospective study, we analyzed samples from 50 kidney transplant recipients. We collected blood and kidney transplant biopsy samples at sequential time points before and post transplant. We used next generation sequencing to characterize T-cell receptor (TCR) repertoire by using illumina miSeq on cDNA synthesized from RNA extracted from six patients' samples. We also measured RNA expression levels of FOXP3, CD8, CD4, granzyme and perforin in blood samples from all 50 patients. RESULTS: Seven patients developed TCMR during the first three months of the study. Out of six patients who had complete sets of blood and biopsy samples two had TCMR. We found an expansion of the TCR repertoire in blood at time of rejection when compared to that at pre-transplant or one-month post transplant. Patients with TCMR (n = 7) had significantly higher RNA expression levels of FOXP3, Perforin, Granzyme, CD4 and CD8 in blood samples than those with no TCMR (n = 43) (P = 0.02, P = 0.003, P = 0.002, P = 0.017, and P = 0.01, respectively). CONCLUSIONS: Our study provides a potential utilization of TCR clone kinetics analysis in the diagnosis of TCMR. This approach may allow for the identification of the expanded T-cell clones associated with the rejection and lead to potential noninvasive diagnosis and targeted therapies of TCMR.


Asunto(s)
Rechazo de Injerto/inmunología , Trasplante de Riñón , ARN Mensajero/sangre , Receptores de Antígenos de Linfocitos T/metabolismo , Linfocitos T/inmunología , Adulto , Anciano , Biomarcadores/sangre , Antígenos CD4/genética , Antígenos CD8/genética , Femenino , Factores de Transcripción Forkhead/genética , Perfilación de la Expresión Génica , Rechazo de Injerto/patología , Granzimas/genética , Humanos , Riñón/patología , Masculino , Persona de Mediana Edad , Perforina/genética , Estudios Prospectivos , Receptores de Antígenos de Linfocitos T/genética , Linfocitos T/metabolismo , Adulto Joven
14.
Kidney Int Rep ; 9(3): 580-588, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38481490

RESUMEN

Introduction: Providing hemodialysis to patients with kidney failure (KF) in conflict-affected areas poses a significant challenge. Achieving and sustaining reasonable quality hemodialysis operations in such regions necessitates a comprehensive approach. Methods: In the conflict area of Northwest (NW) Syria, a 3-phase project was initiated to address the quality of hemodialysis operations. The assessment phase involved the examination of infection prevention and control (IPC) protocols, staff training, medical protocols, individualized hemodialysis prescriptions, and laboratory testing capabilities. The second phase involved activities toward capacity building and implementing an action plan based on feasibility and sustainability. Results: The assessment phase revealed that only 7 of 14 centers had IPC protocols, and 8 centers provided IPC training for their staff. Furthermore, only 7 centers had medical protocols, and 5 used individualized hemodialysis prescriptions. Difficulties in testing for potassium was reported in 7 centers and the inability to perform hepatitis B and C serologies was reported in 3 centers. Only 2 centers adhered to machine and water treatment system maintenance guidelines, and 4 conducted daily water quality checks. Recommendations were formulated, and an action plan was developed for implementation in the second phase. The plan encompassed enhancements in IPC practices, medical protocols, record-keeping, laboratory testing, and equipment maintenance. Conclusion: This project underscores that hemodialysis services in conflict-affected areas do not meet the standards for quality care. It emphasizes the necessity of implementing a comprehensive framework that engages relevant stakeholders in defining and upholding quality care, a model that should be extended to other protracted conflict-affected regions.

15.
Artículo en Inglés | MEDLINE | ID: mdl-37466327

RESUMEN

BACKGROUND: Frailty is associated with poor outcomes in surgical patients including kidney transplant (KT) recipients. Transplant centers that measure frailty have better pre- and postoperative outcomes. However, clinical utility of existing tools is low due to time constraints. To address this major barrier to implementation in the preoperative evaluation of patients, we developed an abridged frailty phenotype. METHODS: The abridged frailty phenotype was developed by simplifying the 5 physical frailty phenotype (PFP) components in a two-center prospective cohort of 3 220 KT candidates and tested for efficiency (time to completion) in 20 candidates evaluation (January 2009 to March 2020). We examined area under curve (AUC) and Cohen's kappa agreement to compare the abridged assessment with the PFP. We compared waitlist mortality risk (competing risks models) by frailty using the PFP and abridged assessment, respectively. Model discrimination was assessed using Harrell's C-statistic. RESULTS: Of 3 220 candidates, the PFP and abridged assessment identified 23.8% and 27.4% candidates as frail, respectively. The abridged frailty phenotype had substantial agreement (kappa = 0.69, 95% CI: 0.66-0.71) and excellent discrimination (AUC = 0.861). Among 20 patients at evaluation, abridged assessment took 5-7 minutes to complete. The PFP and abridged assessment had similar associations with waitlist mortality (subdistribution hazard ratio [SHR] = 1.62, 95% CI: 1.26-2.08 vs SHR = 1.70, 95% CI: 1.33-2.16) and comparable mortality discrimination (p = .51). CONCLUSIONS: The abridged assessment is an efficient and valid way to identify frailty. It predicts waitlist mortality without sacrificing discrimination. Surgical departments should consider utilizing the abridged assessment to evaluate frailty in patients when time is limited.


Asunto(s)
Fragilidad , Trasplante de Riñón , Humanos , Fragilidad/diagnóstico , Fragilidad/etiología , Estudios de Cohortes , Estudios Prospectivos , Trasplante de Riñón/efectos adversos , Fenotipo
16.
Hemodial Int ; 28(3): 351-357, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38937150

RESUMEN

BACKGROUND: Phosphide metal poisoning results in tens of thousands of fatalities per year worldwide. The mortality in critically ill patients often exceeds 50%. The available treatment is supportive and there is no antidote. Dialysis is recommended to treat advanced complications but has not been prescribed early in the process. In this study we report our experience in using dialysis in the early hours of presentation of the patients and suggest it can favorably improve the prognosis. We also draw attention to the risk of suicide under conditions of chronic conflict such as those in northwestern Syria, and to the lack of necessary mental health support for patients after suicide attempts. METHODS: Retrospective review of records of patients poisoned with aluminum phosphide and admitted to critical care facilities in northwestern Syria between July 2022 and June 2023. RESULTS: During the observation period 16 cases were encountered. Suicide was the reason of the poisoning in 15 patients, the median patient age was 18 years and over two thirds of the patients were female. Early dialysis was used in 11 patients who were critically ill and their mortality rate was 18%. CONCLUSIONS: Phosphide metal poisoning is common in the disasters stricken area of northwestern Syria. Most cases are suicidal and impact young females. Early dialytic interventions may favorably impact the outcomes.


Asunto(s)
Fosfinas , Diálisis Renal , Humanos , Femenino , Masculino , Fosfinas/envenenamiento , Diálisis Renal/métodos , Adulto , Estudios Retrospectivos , Adolescente , Adulto Joven , Compuestos de Aluminio/envenenamiento , Siria , Niño , Persona de Mediana Edad , Intoxicación/terapia , Desastres , Intento de Suicidio
17.
J Clin Med ; 12(15)2023 Jul 27.
Artículo en Inglés | MEDLINE | ID: mdl-37568328

RESUMEN

Despite significant advancements in immunosuppressive therapies, kidney transplant rejection continues to pose a substantial challenge, impacting the long-term survival of grafts. This article provides an overview of the diagnosis, current therapies, and management strategies for acute T-cell-mediated rejection (TCMR) and antibody-mediated rejection (ABMR). TCMR is diagnosed through histological examination of kidney biopsy samples, which reveal the infiltration of mononuclear cells into the allograft tissue. Corticosteroids serve as the primary treatment for TCMR, while severe or steroid-resistant cases may require T-cell-depleting agents, like Thymoglobulin. ABMR occurs due to the binding of antibodies to graft endothelial cells. The most common treatment for ABMR is plasmapheresis, although its efficacy is still a subject of debate. Other current therapies, such as intravenous immunoglobulins, anti-CD20 antibodies, complement inhibitors, and proteasome inhibitors, are also utilized to varying degrees, but their efficacy remains questionable. Management decisions for ABMR depend on the timing of the rejection episode and the presence of chronic changes. In managing both TCMR and ABMR, it is crucial to optimize immunosuppression and address adherence. However, further research is needed to explore newer therapeutics and evaluate their efficacy.

18.
Transplant Direct ; 9(4): e1464, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37009166

RESUMEN

Enteric hyperoxalosis (EH) is an emerging cause of kidney transplantation (KT) dysfunction. We sought to determine the prevalence of EH and factors that affect plasma oxalate (POx) among at-risk KT candidates. Methods: We prospectively measured POx among KT candidates evaluated at our center from 2017 to 2020 with risk factors for EH namely bariatric surgery, inflammatory bowel disease, or cystic fibrosis. EH was defined by a POx ≥10 µmol/L. Period-prevalence of EH was calculated. We compared mean POx across 5 factors: underlying condition, chronic kidney disease (CKD) stage, dialysis modality, phosphate binder type, and body mass index. Results: Of 40 KT candidates screened, 23 had EH for a 4-y period prevalence of 58%. Mean POx was 21.6 ± 23.5 µmol/L ranging from 0 to 109.6 µmol/L. 40% of screened had POx >20 µmol/L. Sleeve gastrectomy was the most common underlying condition associated with EH. Mean POx did not differ by underlying condition (P = 0.27), CKD stage (P = 0.17), dialysis modality (P = 0.68), phosphate binder (P = 0.58), and body mass index (P = 0.56). Conclusions: Bariatric surgery and inflammatory bowel disease were associated with a high prevalence of EH among KT candidates. Contrary to prior studies, sleeve gastrectomy was also associated with hyperoxalosis in advanced CKD. POx concentrations observed in EH reached levels associated with tissue and potentially allograft deposition. Concentrations can be as high as that seen in primary hyperoxaluria. More studies are needed to assess if POx is indeed a modifiable factor affecting allograft function in patients with EH.

19.
Transplantation ; 107(1): 181-191, 2023 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-36117251

RESUMEN

BACKGROUND: Postacute sequelae of SARS-CoV-2 infection (PASC) is an increasingly recognized phenomenon and manifested by long-lasting cognitive, mental, and physical symptoms beyond the acute infection period. We aimed to estimate the frequency of PASC symptoms in solid organ transplant (SOT) recipients and compared their frequency between those with SARS-CoV-2 infection requiring hospitalization and those who did not require hospitalization. METHODS: A survey consisting of 7 standardized questionnaires was administered to 111 SOT recipients with history of SARS-CoV-2 infection diagnosed >4 wk before survey administration. RESULTS: Median (interquartile range) time from SARS-CoV-2 diagnosis was 167 d (138-221). Hospitalization for SARS-CoV-2 infection was reported in 33 (30%) participants. Symptoms after the COVID episode were perceived as following: significant trauma (53%), cognitive decline (50%), fatigue (41%), depression (36%), breathing problems (35%), anxiety (23%), dysgeusia (22%), dysosmia (21%), and pain (19%). Hospitalized patients had poorer median scores in cognition (Quick Dementia Rating System survey score: 2.0 versus 0.5, P = 0.02), quality of life (Health-related Quality of Life survey: 2.0 versus 1.0, P = 0.015), physical health (Global physical health scale: 10.0 versus 11.0, P = 0.005), respiratory status (Breathlessness, Cough and Sputum Scale: 1.0 versus 0.0, P = 0.035), and pain (Pain score: 3 versus 0 out of 10, P = 0.003). Among patients with infection >6 mo prior, some symptoms were still present as following: abnormal breathing (42%), cough (40%), dysosmia (29%), and dysgeusia (34%). CONCLUSIONS: SOT recipients reported a high frequency of PASC symptoms. Multidisciplinary approach is needed to care for these patients beyond the acute phase.


Asunto(s)
COVID-19 , Trasplante de Órganos , Humanos , Autoinforme , COVID-19/epidemiología , SARS-CoV-2 , Calidad de Vida , Prueba de COVID-19 , Receptores de Trasplantes , Tos , Dolor , Trasplante de Órganos/efectos adversos
20.
Transplant Direct ; 8(1): e1268, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34966840

RESUMEN

BACKGROUND: Few reports have focused on newer coronavirus disease 2019 (COVID-19) therapies (remdesivir, dexamethasone, and convalescent plasma) in solid organ transplant recipients; concerns had been raised regarding possible adverse impact on allograft function or secondary infections. METHODS: We studied 77 solid organ transplant inpatients with COVID-19 during 2 therapeutic eras (Era 1: March-May 2020, 21 patients; and Era 2: June-November 2020, 56 patients) and 52 solid organ transplant outpatients. RESULTS: In Era 1, no patients received remdesivir or dexamethasone, and 4 of 21 (19.4%) received convalescent plasma, whereas in Era 2, remdesivir (24/56, 42.9%), dexamethasone (24/56, 42.9%), and convalescent plasma (40/56, 71.4%) were commonly used. Mortality was low across both eras, 4 of 77 (5.6%), and rejection occurred in only 2 of 77 (2.8%) inpatients; infections were similar in hypoxemic patients with or without dexamethasone. Preexisting graft dysfunction was associated with greater need for hospitalization, higher severity score, and lower survival. Acute kidney injury was present in 37.3% of inpatients; renal function improved more rapidly in patients who received remdesivir and convalescent plasma. Post-COVID-19 renal and liver function were comparable between eras, out to 90 d. CONCLUSIONS: Newer COVID-19 therapies did not appear to have a deleterious effect on allograft function, and infectious complications were comparable.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA