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1.
Intern Med J ; 54(3): 483-487, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38404157

RESUMEN

There have been reports of COVID-19 vaccination triggering anti-nuclear cytoplasmic antibody (ANCA)-associated vasculitis (AAV), but no robust studies have examined the link. This retrospective cohort study assessed the impact of COVID vaccination on the rate of denovo and relapsed AAV in a Sydney Local Health District from 2018 to 2022. Despite more than 95% of the population receiving vaccination, the case rate of AAV was stable. These findings do not support a relationship between COVID vaccination and AAV.


Asunto(s)
Vasculitis Asociada a Anticuerpos Citoplasmáticos Antineutrófilos , Coronavirus , Granulomatosis con Poliangitis , Poliangitis Microscópica , Humanos , Estudios Retrospectivos , Vacunas contra la COVID-19 , Anticuerpos Anticitoplasma de Neutrófilos
2.
Nephrology (Carlton) ; 29(1): 34-38, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37605476

RESUMEN

Kidney transplantation in people living with HIV (PLWHIV) is occurring with increasing frequency. Limited international data suggest comparable patient and graft survival in kidney transplant recipients with and without HIV. All PLWHIV aged ≥18 years who received a kidney transplant between 2000 and 2020 were identified by retrospective data initially extracted from Australia and New Zealand Dialysis and Transplant Registry (ANZDATA), with additional HIV-specific clinical data extracted from linked local health-care records. Twenty-five PLWHIV and kidney failure received their first kidney transplant in Australia between January 2000 and December 2020. Majority were male (85%), with median age 54 years (interquartile range, IQR 43-57). Focal segmental glomerulosclerosis was the most common primary kidney disease (20%), followed by polycystic kidney disease (16%). 80% of patients underwent induction with basiliximab and none with anti-thymocyte globulin (ATG). Participants were followed for median time of 3.5 years (IQR 2.0-6.5). Acute rejection occurred in 24% of patients. Two patients lost their allografts and three died. Virological escape occurred in 28% of patients, with a maximum viral load of 190 copies/mL. In conclusion, kidney transplantation in PLWHIV in Australia is occurring with increasing frequency. Acute rejection is more common than in Australia's general transplant population, but this does not appear to be associated with higher rates of graft failure or mortality out to four years.


Asunto(s)
Infecciones por VIH , Trasplante de Riñón , Humanos , Masculino , Femenino , Adolescente , Adulto , Persona de Mediana Edad , Inmunosupresores/efectos adversos , Trasplante de Riñón/efectos adversos , VIH , Estudios Retrospectivos , Rechazo de Injerto/prevención & control , Diálisis Renal , Australia/epidemiología , Infecciones por VIH/complicaciones , Infecciones por VIH/diagnóstico , Infecciones por VIH/tratamiento farmacológico , Supervivencia de Injerto
3.
Aust N Z J Obstet Gynaecol ; 63(3): 418-424, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37029932

RESUMEN

AIMS: The aim is to report the results of Australia's first uterus transplantation (UTx). METHODS: Following long-standing collaboration between the Swedish and Australian teams, Human Research Ethics approval was obtained to perform six UTx procedures in a collaborative multi-site research study (Western Sydney Local District Health 2019/ETH13038), including Royal Hospital for Women, Prince of Wales Hospital, and Westmead Hospital in New Souh Wales. Surgeries were approved in both the live donor (LD) and deceased donor models in collaboration with the inaugural Swedish UTx team. RESULTS: This is the first UTx procedure to occur in Australia, involving a mother donating her uterus to her daughter. The total operative time for the donor was 9 h 54 min. Concurrently, recipient surgery was synchronised to minimise graft ischaemic time, and the total operative time for the recipient was 6 h 12 min. Surgery was by laparotomy in the LD and recipient. The total warm ischaemic time of the graft was 1 h 53 min, and the cold ischaemic time was 2 h 17 min (total ischaemic time 4 h 10 min). The patient's first menstruation occurred 33 days after the UTx procedure. CONCLUSION: Twenty-five years of Swedish and Australian collaboration has led to Australia's first successfully performed UTx surgery at The Royal Hospital for Women, Sydney, Australia.


Asunto(s)
Infertilidad Femenina , Femenino , Humanos , Suecia , Infertilidad Femenina/cirugía , Australia , Útero/trasplante , Donadores Vivos
4.
Nephrol Dial Transplant ; 37(6): 1118-1124, 2022 05 25.
Artículo en Inglés | MEDLINE | ID: mdl-34043011

RESUMEN

BACKGROUND: Kidney functional reserve (KFR), the only clinical kidney stress test, is not routinely measured because the complexity of measurement has limited clinical application. We investigated the utility of plasma cystatin C (CysC) after oral protein loading (PL) to determine KFR in Stages 3 and 4 chronic kidney disease (CKD). METHODS: Following a 24-h low-protein diet, KFR was measured after oral protein by hourly plasma CysC and compared with simultaneous creatinine clearance (CrCl) and radionuclide 99technetium diethylenetriaminepentaacetatic acid (Tc-99m-DTPA) measured glomerular filtration rate (mGFR) measurement in an observational, single-centre cohort study of adults with CKD Stages 3 and 4. Subjects were followed for 3 years for fast (F) or slow (S) CKD progression, dialysis requirement or death or a combination of major adverse kidney events (MAKEs). RESULT: CysC, CrCl and Tc-99m-DTPA mGFR measurements of KFR in 19 CKD Stage 3 and 21 CKD Stage 4 patients yielded good agreement. KFR was not correlated with baseline kidney function. Eight CKD Stage 3 (42%) and 11 CKD Stage 4 (52%) subjects reached their lowest serum CysC concentration 4 h after PL. CysC KFR and baseline serum creatinine (sCr) predicted death or dialysis or MAKE-F with a respective area under the curve (AUC) of 0.73 [95% confidence interval (CI) 0.48-0.89] and 0.71 (95% CI 0.51-0.84). Including CysC KFR, age, baseline sCr and nadir CysC predicted a decrease in sCr-estimated GFR >1.2 mL/min/year (MAKE-S) with an AUC of 0.89. CONCLUSIONS: Serial CysC avoided timed urine collection and radionuclide exposure and yielded equivalent estimates of KFR. Serial CysC may facilitate monitoring of KFR in clinical practice.


Asunto(s)
Cistatina C , Insuficiencia Renal Crónica , Adulto , Biomarcadores , Estudios de Cohortes , Creatinina , Tasa de Filtración Glomerular , Humanos , Riñón/diagnóstico por imagen , Ácido Pentético , Diálisis Renal
5.
Am J Kidney Dis ; 69(5): 602-616, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-27889296

RESUMEN

BACKGROUND: Many donors and recipients report an improved relationship after transplantation; however, tension, neglect, guilt, and proprietorial concern over the recipient can impede donor and recipient well-being and outcomes. We aimed to describe donor and recipient expectations and experiences of their relationship in the context of living kidney donation. STUDY DESIGN: Thematic synthesis of qualitative studies. SETTING & POPULATION: Living kidney donors and recipients. SEARCH STRATEGY & SOURCES: Electronic databases were searched to October 2015. ANALYTICAL APPROACH: Thematic synthesis. RESULTS: From 40 studies involving 1,440 participants (889 donors and 551 recipients) from 13 countries, we identified 6 themes. "Burden of obligation" described the recipient's perpetual sense of duty to demonstrate gratitude to the donor. "Earning acceptance" was the expectation that donation would restore relationships. "Developing a unique connection" reflected the inexplicable bond that donor-recipient dyads developed postdonation. "Desiring attention" was expressed by donors who wanted recognition for the act of donation and were envious and resentful of the attention the recipient received. "Retaining kidney ownership" reflected the donor's inclination to ensure that the recipient protected "their" kidney. "Enhancing social participation" encompassed relieving both the caregiver from the constraints of dialysis and the recipient from increased involvement and contribution in family life. LIMITATIONS: Non-English articles were excluded. CONCLUSIONS: Living kidney donation can strengthen donor-recipient relationships but may trigger or exacerbate unresolved angst, tension, jealousy, and resentment. Facilitating access to pre- and posttransplantation psychological support that addresses potential relationship changes may help donors and recipients better adjust to changes in the relationship dynamics, which in turn may contribute to improved psychosocial and transplantation outcomes following living kidney donation.


Asunto(s)
Actitud , Relaciones Interpersonales , Trasplante de Riñón , Donadores Vivos , Receptores de Trasplantes , Humanos , Investigación Cualitativa
6.
N Engl J Med ; 363(7): 609-19, 2010 Aug 12.
Artículo en Inglés | MEDLINE | ID: mdl-20581422

RESUMEN

BACKGROUND: In clinical practice, there is considerable variation in the timing of the initiation of maintenance dialysis for patients with stage V chronic kidney disease, with a worldwide trend toward early initiation. In this study, conducted at 32 centers in Australia and New Zealand, we examined whether the timing of the initiation of maintenance dialysis influenced survival among patients with chronic kidney disease. METHODS: We randomly assigned patients 18 years of age or older with progressive chronic kidney disease and an estimated glomerular filtration rate (GFR) between 10.0 and 15.0 ml per minute per 1.73 m2 of body-surface area (calculated with the use of the Cockcroft-Gault equation) to planned initiation of dialysis when the estimated GFR was 10.0 to 14.0 ml per minute (early start) or when the estimated GFR was 5.0 to 7.0 ml per minute (late start). The primary outcome was death from any cause. RESULTS: Between July 2000 and November 2008, a total of 828 adults (mean age, 60.4 years; 542 men and 286 women; 355 with diabetes) underwent randomization, with a median time to the initiation of dialysis of 1.80 months (95% confidence interval [CI], 1.60 to 2.23) in the early-start group and 7.40 months (95% CI, 6.23 to 8.27) in the late-start group. A total of 75.9% of the patients in the late-start group initiated dialysis when the estimated GFR was above the target of 7.0 ml per minute, owing to the development of symptoms. During a median follow-up period of 3.59 years, 152 of 404 patients in the early-start group (37.6%) and 155 of 424 in the late-start group (36.6%) died (hazard ratio with early initiation, 1.04; 95% CI, 0.83 to 1.30; P=0.75). There was no significant difference between the groups in the frequency of adverse events (cardiovascular events, infections, or complications of dialysis). CONCLUSIONS: In this study, planned early initiation of dialysis in patients with stage V chronic kidney disease was not associated with an improvement in survival or clinical outcomes. (Funded by the National Health and Medical Research Council of Australia and others; Australian New Zealand Clinical Trials Registry number, 12609000266268.)


Asunto(s)
Fallo Renal Crónico/terapia , Diálisis Renal/métodos , Adulto , Enfermedades Cardiovasculares/etiología , Enfermedades Cardiovasculares/mortalidad , Femenino , Estudios de Seguimiento , Tasa de Filtración Glomerular , Humanos , Infecciones/etiología , Infecciones/mortalidad , Estimación de Kaplan-Meier , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/mortalidad , Masculino , Persona de Mediana Edad , Modelos de Riesgos Proporcionales , Calidad de Vida , Diálisis Renal/efectos adversos , Factores de Tiempo , Uremia/etiología
7.
Am J Kidney Dis ; 57(5): 707-15, 2011 May.
Artículo en Inglés | MEDLINE | ID: mdl-21349618

RESUMEN

BACKGROUND: Planned early initiation of dialysis therapy based on estimated kidney function does not influence mortality and major comorbid conditions, but amelioration of symptoms may improve quality of life and decrease costs. STUDY DESIGN: Patients with progressive chronic kidney disease and a Cockcroft-Gault estimated glomerular filtration rate of 10-15 mL/min/1.73 m(2) were randomly assigned to start dialysis therapy at a glomerular filtration rate of either 10-14 (early start) or 5-7 mL/min/1.73 m(2) (late start). SETTING & POPULATION: Of the original 828 patients in the IDEAL (Initiation of Dialysis Early or Late) Trial in renal units in Australia and New Zealand, 642 agreed to participate in this cost-effectiveness study. STUDY PERSPECTIVE & TIMEFRAME: A societal perspective was taken for costs. Patients were enrolled between July 1, 2000, and November 14, 2008, and followed up until November 14, 2009. INTERVENTION: Planned earlier start of maintenance dialysis therapy. OUTCOMES: Difference in quality of life and costs. RESULTS: Median follow-up of patients (307 early start, 335 late start) was 4.15 years, with a 6-month difference in median duration of dialysis therapy. Mean direct dialysis costs were significantly higher in the early-start group ($10,777; 95% CI, $313 to $22,801). Total costs, including costs for resources used to manage adverse events, were higher in the early-start group ($18,715; 95% CI, -$3,162 to $43,021), although not statistically different. Adjusted for differences in baseline quality of life, the difference in quality-adjusted survival between groups over the time horizon of the trial was not statistically different (0.02 full health equivalent years; 95% CI, -0.09 to 0.14). LIMITATIONS: Missing quality-of-life questionnaires and skewed cost data, although similar in each group, decrease the precision of results. CONCLUSION: Planned early initiation of dialysis therapy in patients with progressive chronic kidney disease has higher dialysis costs and is not associated with improved quality of life.


Asunto(s)
Fallo Renal Crónico/economía , Fallo Renal Crónico/terapia , Diálisis Renal/economía , Anciano , Análisis Costo-Beneficio , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Diálisis Renal/métodos , Factores de Tiempo , Resultado del Tratamiento
8.
BMJ Open ; 9(4): e026629, 2019 04 04.
Artículo en Inglés | MEDLINE | ID: mdl-30948607

RESUMEN

BACKGROUND AND OBJECTIVES: Many donors and recipients report an improved bond posttransplantation; however, unexpected conflicts and tension may also occur. Insights into the lived experiences of the donor-recipient relationship can inform strategies for interventions and support. We aimed to describe donor and recipient expectations and experiences of their relationship before and after living kidney donor transplantation. DESIGN, SETTING AND PARTICIPANTS: Semistructured interviews were conducted with 16 donor-recipient pairs before the transplant and 11-14 months post-transplant. Transcripts were analysed thematically. RESULTS: We identified seven themes (with respective subthemes): donation as enacting familial responsibility for care; analytical decision making to mitigate regret (avoiding anticipated regret and maintaining control, removing emotional impulsivity); strengthened interpersonal ties (gaining a deeper appreciation among family members, stronger empathy for each other, improving social participation); instability of relational impacts (anger and aggression threatening dynamics, unanticipated stress and emotional lability, triggering familial tension); renegotiating social roles (unexpected continuation of caregiving responsibilities, inability to relinquish the caregiving role, disappointment with unfulfilled renewal of intimacy, dissatisfaction over discrepant energy levels); guilt over unmet expectations and inevitability of the gift relationship (vague and transient indebtedness, expectation of reciprocity, transferring kidney ownership). CONCLUSIONS: Donor-recipient relationships may be improved through increased empathy, appreciation, and ability to participate in life together; however, unfulfilled expectations and behavioural and emotional changes in recipients (a side effect related to immunosuppression) remain unresolved consequences of living kidney donor transplantation. Education and counselling to help donors and recipients adjust to potential changes in relationship dynamics may help protect and foster relational stability postdonation.


Asunto(s)
Actitud , Relaciones Interpersonales , Trasplante de Riñón/psicología , Donadores Vivos/psicología , Adulto , Anciano , Femenino , Humanos , Entrevistas como Asunto , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Adulto Joven
9.
Sci Rep ; 8(1): 9021, 2018 06 13.
Artículo en Inglés | MEDLINE | ID: mdl-29899355

RESUMEN

People with biopsy-proven glomerulonephritis (GN) as their cause of end-stage kidney disease (ESKD) who undergo kidney transplantation incur significant risk of recurrent GN-related graft failure, but the risk in recipients with ESKD where GN was suspected but not biopsy proven (presumed/advanced GN) and when the cause of ESKD is unknown remains uncertain. Using the Australia and New Zealand Dialysis and Transplant registry, we examined the associations between primary kidney transplant recipients whose ESKD was attributed to: 1) commonly-recurring GN (i.e. IgA nephropathy, membranoproliferative GN, focal segmental glomerulosclerosis and membranous GN), 2) presumed/advanced GN, and 3) cause of ESKD unknown (uESKD) and GN-related graft failure using adjusted competing risk models. Of 5258 recipients followed for a median of 8 years, 3539 (67.3%) had commonly-recurring GN, 1195 (22.7%) presumed/advanced GN, and 524 (10.0%) uESKD. Compared to recipients with commonly-recurring GN, recipients with presumed/advanced GN or uESKD experienced a low incidence of GN-related graft failure (<1%) and a lower hazard of GN-related graft failure (adjusted sub-distribution hazard ratio [HR] 0.28 [95%CI 0.15-0.54,p < 0.001] and 0.20 [95%CI 0.06-0.64,p = 0.007], respectively). People with ESKD attributed to either presumed/advanced GN or unknown cause face a very low risk of graft failure secondary to GN recurrence after transplantation.


Asunto(s)
Glomerulonefritis/complicaciones , Rechazo de Injerto/diagnóstico , Fallo Renal Crónico/terapia , Trasplante de Riñón/métodos , Receptores de Trasplantes/estadística & datos numéricos , Adulto , Australia/epidemiología , Femenino , Rechazo de Injerto/epidemiología , Rechazo de Injerto/etiología , Humanos , Incidencia , Estimación de Kaplan-Meier , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/epidemiología , Trasplante de Riñón/efectos adversos , Masculino , Persona de Mediana Edad , Nueva Zelanda/epidemiología , Factores de Riesgo
10.
Nephrol Nurs J ; 34(1): 66-70, 2007.
Artículo en Inglés | MEDLINE | ID: mdl-17345693

RESUMEN

A new protocol for the selection and work-up of living renal donors has been developed in response to recent findings from a grounded theory study that explored the experiences of 18 donors in Western Australia. This protocol is designed to enhance the feelings of personal control by the donor over participation in the process and the potential outcome. It includes the coordination of the work-up process by a Clinical Nurse Consultant.


Asunto(s)
Actitud Frente a la Salud , Selección de Donante/organización & administración , Trasplante de Riñón , Donadores Vivos/psicología , Evaluación de Necesidades/organización & administración , Obtención de Tejidos y Órganos/organización & administración , Adulto , Protocolos Clínicos , Miedo , Femenino , Grupos Focales , Humanos , Donadores Vivos/educación , Masculino , Persona de Mediana Edad , Investigación Metodológica en Enfermería , Educación del Paciente como Asunto/organización & administración , Desarrollo de Programa , Apoyo Social , Encuestas y Cuestionarios , Factores de Tiempo , Viaje , Incertidumbre , Australia Occidental
11.
J Diabetes Res ; 2016: 8735782, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-28053992

RESUMEN

Background. Optimal glycaemic targets following transplantation are unknown. Understanding the impact of DM and posttransplant diabetes mellitus (PTDM) may improve patient and graft survival in transplant recipients. Aim. To determine the perioperative and one-year outcomes after renal transplantation and whether these outcomes are affected by preexisting DM, PTDM, or glycaemia during transplant admission. Method. Adult recipients of renal transplants from a single centre over 5.5 years were retrospectively reviewed. Measured outcomes during transplant admission included glycaemia and complications (infective complications, acute rejection, and return to dialysis) and, at 12 months, glycaemic control and complications (cardiovascular complication, graft failure). Results. Of 148 patients analysed, 29 (19.6%) had DM and 27 (18.2%) developed PTDM. Following transplantation, glucose levels were higher in patients with DM and PTDM. DM patients had a longer hospital stay, had more infections, and were more likely return to dialysis. PTDM patients had increased rates of acute rejection and return to dialysis. At 1 year after transplant, there were more cardiovascular complications in DM patients compared to those without DM. Conclusions. Compared to patients without DM, patients with DM or PTDM are more likely to suffer from complications perioperatively and at 12 months. Perioperative glycaemia is associated with graft function and may be a modifiable risk.


Asunto(s)
Glucemia/análisis , Trasplante de Riñón , Insuficiencia Renal/cirugía , Adulto , Enfermedades Cardiovasculares/complicaciones , Femenino , Rechazo de Injerto , Supervivencia de Injerto , Hospitalización , Humanos , Hiperglucemia/complicaciones , Masculino , Persona de Mediana Edad , Periodo Perioperatorio , Insuficiencia Renal/complicaciones , Estudios Retrospectivos , Riesgo , Resultado del Tratamiento
13.
Transplantation ; 75(7): 1026-9, 2003 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-12698092

RESUMEN

BACKGROUND: Patient fitness at the time of organ allocation has an impact on graft survival equivalent to the effect of human leukocyte antigen (HLA) matching. The variation between institutions in assessment of fitness is not known, nor is the potential impact on mean graft survival of incorporating patient fitness into local adult cadaveric-kidney transplant-allocation algorithms. METHODS: Data from the Collaborative Transplant Study (CTS, 1985-2000) were reviewed. Quantitative criteria (QC) of patient fitness based on national transplant society guidelines were compared with subjective categorization (SC) of each patient on the current local transplant waiting list (n=109) determined by their supervising nephrologist. RESULTS: Five-year cadaveric graft survival was 70%, 61%, and 53% for good-, moderate-, and poor-risk patients in the CTS data set (n=102, 612), equivalent to half lives of 12.7, 9.8, and 8.7 years, respectively, with similar results from the local program. The distribution of local waiting-list patients into fitness categories A (good), B (moderate), C (poor), and D (unacceptable) was 51%:31%:13%:5% by SC and 25%:40%:27%:8% by QC. At one hospital, 61% (n=51) of patients were classified category A by SC, and falling to 16% by QC (P<.0001). Compared with preferential category A recipient allocation, an unrestricted allocation policy was estimated to sacrifice 1.5 years of overall program-mean graft survival. CONCLUSIONS: Use of QC may reduce the variation in subjective patient assessment seen between institutions. Any proposed changes in organ allocation methods should address the "equity versus efficiency" balance in an open fashion and predict the impact on the overall graft survival for the program by quantifying the "equity penalty."


Asunto(s)
Enfermedades Renales/fisiopatología , Enfermedades Renales/cirugía , Trasplante de Riñón , Aptitud Física , Adolescente , Adulto , Anciano , Cadáver , Niño , Preescolar , Supervivencia de Injerto , Humanos , Lactante , Persona de Mediana Edad , Análisis de Supervivencia
14.
Perit Dial Int ; 24(2): 176-81, 2004.
Artículo en Inglés | MEDLINE | ID: mdl-15119639

RESUMEN

OBJECTIVES: The primary objective of the IDEAL study is to determine whether the timing of dialysis initiation has an effect on survival in subjects with end-stage renal disease (ESRD). The secondary objectives are to determine the impact of "early start" versus "late start" dialysis on nutritional and cardiac morbidity, quality of life, and economic cost. DESIGN: Prospective multicenter randomized controlled trial. Patients are randomized to commence dialysis at a glomerular filtration rate (by Cockcroft-Gault) of either 10-14 mL/minute/1.73 m2 ("early start") or 5-7 mL/min/1.73 m2 ("late start"), with stratification for dialysis modality (hemodialysis vs peritoneal dialysis), study center, and the presence or not of diabetes mellitus. SETTING: Dialysis units throughout Australia and New Zealand. PATIENTS: Patients with ESRD commencing chronic dialysis therapy. OUTCOME MEASURES: Three years from randomization, all-cause mortality, morbidity, and economic impact; structural and functional cardiac status, nutritional state, and quality of life will be assessed. RESULTS: To date, 388 patients of a minimum 800 patients have been entered and randomized into the study. Current recruitment rates suggest sufficient patients will be enrolled by December 2004 and follow-up completed by December 2007. CONCLUSIONS: The IDEAL study will provide evidence for the optimal time to commence dialysis.


Asunto(s)
Fallo Renal Crónico/terapia , Diálisis Renal/métodos , Proyectos de Investigación , Costos de la Atención en Salud , Humanos , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/mortalidad , Tiempo de Internación , Estudios Multicéntricos como Asunto , Estado Nutricional , Estudios Prospectivos , Calidad de Vida , Ensayos Clínicos Controlados Aleatorios como Asunto , Diálisis Renal/efectos adversos , Factores de Tiempo
15.
Clin J Am Soc Nephrol ; 9(1): 135-42, 2014 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-24178976

RESUMEN

BACKGROUND AND OBJECTIVES: The Initiating Dialysis Early and Late study showed that planned early or late initiation of dialysis, based on the Cockcroft and Gault estimation of GFR, was associated with identical clinical outcomes. This study examined the association of all-cause mortality with estimated GFR at dialysis commencement, which was determined using multiple formulas. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Initiating Dialysis Early and Late trial participants were stratified into tertiles according to the estimated GFR measured by Cockcroft and Gault, Modification of Diet in Renal Disease, or Chronic Kidney Disease-Epidemiology Collaboration formula at dialysis commencement. Patient survival was determined using multivariable Cox proportional hazards model regression. RESULTS: Only Initiating Dialysis Early and Late trial participants who commenced on dialysis were included in this study (n=768). A total of 275 patients died during the study. After adjustment for age, sex, racial origin, body mass index, diabetes, and cardiovascular disease, no significant differences in survival were observed between estimated GFR tertiles determined by Cockcroft and Gault (lowest tertile adjusted hazard ratio, 1.11; 95% confidence interval, 0.82 to 1.49; middle tertile hazard ratio, 1.29; 95% confidence interval, 0.96 to 1.74; highest tertile reference), Modification of Diet in Renal Disease (lowest tertile hazard ratio, 0.88; 95% confidence interval, 0.63 to 1.24; middle tertile hazard ratio, 1.20; 95% confidence interval, 0.90 to 1.61; highest tertile reference), and Chronic Kidney Disease-Epidemiology Collaboration equations (lowest tertile hazard ratio, 0.93; 95% confidence interval, 0.67 to 1.27; middle tertile hazard ratio, 1.15; 95% confidence interval, 0.86 to 1.54; highest tertile reference). CONCLUSION: Estimated GFR at dialysis commencement was not significantly associated with patient survival, regardless of the formula used. However, a clinically important association cannot be excluded, because observed confidence intervals were wide.


Asunto(s)
Tasa de Filtración Glomerular , Enfermedades Renales/diagnóstico , Enfermedades Renales/terapia , Riñón/fisiopatología , Modelos Biológicos , Diálisis Renal , Australia/epidemiología , Humanos , Estimación de Kaplan-Meier , Enfermedades Renales/mortalidad , Enfermedades Renales/fisiopatología , Análisis Multivariante , Valor Predictivo de las Pruebas , Modelos de Riesgos Proporcionales , Diálisis Renal/efectos adversos , Diálisis Renal/mortalidad , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
17.
Perit Dial Int ; 32(6): 595-604, 2012.
Artículo en Inglés | MEDLINE | ID: mdl-23212859

RESUMEN

BACKGROUND: Since the mid-1990s, early dialysis initiation has dramatically increased in many countries. The Initiating Dialysis Early and Late (IDEAL) study demonstrated that, compared with late initiation, planned early initiation of dialysis was associated with comparable clinical outcomes and increased health care costs. Because residual renal function is a key determinant of outcome and is better preserved with peritoneal dialysis (PD), the present pre-specified subgroup analysis of the IDEAL trial examined the effects of early-compared with late-start dialysis on clinical outcomes in patients whose planned therapy at the time of randomization was PD. METHODS: Adults with an estimated glomerular filtration rate (eGFR) of 10 - 15 mL/min/1.73 m(2) who planned to be treated with PD were randomly allocated to commence dialysis at an eGFR of 10 - 14 mL/min/1.73 m(2) (early start) or 5 - 7 mL/min/1.73 m(2) (late start). The primary outcome was all-cause mortality. RESULTS: Of the 828 IDEAL trial participants, 466 (56%) planned to commence PD and were randomized to early start (n = 233) or late start (n = 233). The median times from randomization to dialysis initiation were, respectively, 2.03 months [interquartile range (IQR):1.67 - 2.30 months] and 7.83 months (IQR: 5.83 - 8.83 months). Death occurred in 102 early-start patients and 96 late-start patients [hazard ratio: 1.04; 95% confidence interval (CI): 0.79 - 1.37]. No differences in composite cardiovascular events, composite infectious deaths, or dialysis-associated complications were observed between the groups. Peritonitis rates were 0.73 episodes (95% CI: 0.65 - 0.82 episodes) per patient-year in the early-start group and 0.69 episodes (95% CI: 0.61 - 0.78 episodes) per patient-year in the late-start group (incidence rate ratio: 1.19; 95% CI: 0.86 - 1.65; p = 0.29). The proportion of patients planning to commence PD who actually initiated dialysis with PD was higher in the early-start group (80% vs 70%, p = 0.01). CONCLUSION: Early initiation of dialysis in patients with stage 5 chronic kidney disease who planned to be treated with PD was associated with clinical outcomes comparable to those seen with late dialysis initiation. Compared with early-start patients, late-start patients who had chosen PD as their planned dialysis modality were less likely to commence on PD.


Asunto(s)
Fallo Renal Crónico/terapia , Diálisis Peritoneal , Anciano , Femenino , Tasa de Filtración Glomerular , Humanos , Análisis de Intención de Tratar , Estimación de Kaplan-Meier , Fallo Renal Crónico/mortalidad , Fallo Renal Crónico/fisiopatología , Masculino , Persona de Mediana Edad , Peritonitis/epidemiología , Factores de Tiempo , Resultado del Tratamiento
18.
Contrib Nephrol ; 171: 1-9, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21625083

RESUMEN

BACKGROUND: In clinical practice there is considerable variation in the timing of initiation of dialysis. The IDEAL trial (Initiating Dialysis Early and Late study) showed that planned early initiation of dialysis in patients with stage 5 chronic kidney disease (CKD) was not associated with an improvement in clinical outcome, but was associated with increased costs. The predominant dialysis modality worldwide is hemodialysis (HD). This subanalysis of the IDEAL trial examined whether the timing of the initiation of dialysis in those who had chosen HD influenced survival and the occurrence of complications. METHODS: Patients on the IDEAL trial were older than 18 years and had progressive advanced CKD. They were randomly assigned to commence dialysis at an estimated glomerular filtration rate (eGFR) of 10-14 ml/min (early start) or when the eGFR was 5-7 ml/min (late start). The primary outcome was death from any cause. RESULTS: Between 2000 and 2008, 362 of the 828 patients (43.7%) randomized in the trial planned to commence HD. 322 (88.9%) of these subsequently commenced HD and 17 (4.7%) commenced peritoneal dialysis, with a median time to the initiation of dialysis of 1.63 months in the early-start group and 6.93 months in the late- start group. During a median follow-up time of 3.81 years, 50 of 171 patients in the early-start group (29.2%) and 59 in the late-start group (30.1%) died (hazard ratio with early initiation=0.97: 95% CI: 0.66-1.41; p=0.86). There was no significant difference in the frequency of cardiovascular events, infections, or access-related events, but there was a significantly higher frequency of fluid and electrolyte events in the late-start group (p=0.02). CONCLUSION: In this subanalysis of the IDEAL trial, patients commencing dialysis early with stage 5 CKD for whom the planned dialysis modality was HD did not have an improvement in survival or any reduction in most clinical outcomes apart from fluid and electrolyte events.


Asunto(s)
Enfermedades Renales/terapia , Diálisis Renal , Adulto , Anciano , Enfermedad Crónica , Femenino , Tasa de Filtración Glomerular , Humanos , Enfermedades Renales/mortalidad , Enfermedades Renales/fisiopatología , Masculino , Persona de Mediana Edad , Resultado del Tratamiento
19.
Clin Transpl ; : 219-25, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-18365380

RESUMEN

In a previous study, we have shown that HLA class II antibodies and a high soluble CD30 (sCD30) measured at least 1 year post-transplant predict subsequent graft failure. We have now updated the results of this same cohort of 208 patients 15 months later. HLA-specific antibodies (class I and class II) were detected by ELISA LAT-M and Luminex LabScreen assays. Data on graft outcome was collected with a median follow-up of 4.7 years. By Kaplan-Meier analysis, class II antibody was again associated with a poorer outcome, with an estimated 6-year graft survival of 67% and 71% when detected by ELISA and Luminex, respectively, compared with 92% for those without class II antibody (p < or = 0.0001). A soluble CD30 level of > or = 100 U/ml was also associated with a poorer estimated 6-year graft survival (p = 0.02). HLA antibodies and high sCD30 (> or = 100 U/ml) had an additive effect such that those with both high sCD30 and class II antibodies had a hazard ratio for subsequent graft failure of 18.1 (p = 0.0008) and 8.6 (p = 0.007) when detected by ELISA and Luminex, respectively. These data show that detection of HLA class II antibodies and serum sCD30 measured at least 1 year post-transplant continues to predict a subsequent outcome up to 6 years after the initial measurement; they also show that such measures provide important information that may allow for modification of ongoing therapy.


Asunto(s)
Antígenos HLA/inmunología , Isoanticuerpos/sangre , Antígeno Ki-1/sangre , Trasplante de Riñón/inmunología , Antígenos CD/sangre , Estudios Transversales , Ensayo de Inmunoadsorción Enzimática , Estudios de Seguimiento , Antígenos HLA-D/inmunología , Humanos , Trasplante de Riñón/mortalidad , Análisis de Supervivencia , Factores de Tiempo , Insuficiencia del Tratamiento , Resultado del Tratamiento
20.
Nephrol Dial Transplant ; 20(12): 2824-6, 2005 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-16204273

RESUMEN

Infliximab is a chimeric tumor necrosis factor-alpha (TNF-alpha) monoclonal antibody, which has been used extensively in patients with rheumatoid arthritis and inflammatory bowel disease. It also appears to be effective in other conditions such as psoriasis and ankylosing spondylitis. The major side effect of infliximab is infection. Renal complications are uncommon and not well recognized. This report describes a probable case of infliximab-induced membranous nephropathy.


Asunto(s)
Anticuerpos Monoclonales/efectos adversos , Fármacos Dermatológicos/efectos adversos , Síndrome Nefrótico/inducido químicamente , Factor de Necrosis Tumoral alfa/inmunología , Adulto , Anticuerpos Monoclonales/uso terapéutico , Fármacos Dermatológicos/uso terapéutico , Diagnóstico Diferencial , Femenino , Humanos , Infliximab , Glomérulos Renales/ultraestructura , Microscopía Electrónica , Síndrome Nefrótico/patología , Psoriasis/tratamiento farmacológico , Psoriasis/inmunología , Índice de Severidad de la Enfermedad
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