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1.
J Am Soc Nephrol ; 34(4): 694-705, 2023 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-36735537

RESUMO

SIGNIFICANCE STATEMENT: Of studies reporting an association of CKD with lower use of invasive cardiac care to treat acute coronary syndrome (ACS), just one accounted for the appropriateness of such care. However, its findings in patients hospitalized nearly 30 years ago may not apply to current practice. In a more recent cohort of 64,695 veterans hospitalized with ACS, CKD was associated with a 32% lower likelihood of receiving invasive care determined to be clinically indicated. Among patients with CKD, not receiving such care was associated with a 1.39-fold higher risk of 6-month mortality. Efforts to elucidate the reasons for this disparity in invasive care in patients with ACS and CKD and implement tailored interventions to enhance its use in this population may offer the potential to improve clinical outcomes. BACKGROUND: Previous studies have shown that patients with CKD are less likely than those without CKD to receive invasive care to treat acute coronary syndrome (ACS). However, few studies have accounted for whether such care was clinically indicated or assessed whether nonuse of such care was associated with adverse health outcomes. METHODS: We conducted a retrospective cohort study of US veterans who were hospitalized at Veterans Affairs Medical Centers from January 2013 through December 2017 and received a discharge diagnosis of ACS. We used multivariable logistic regression to investigate the association of CKD with use of invasive care (coronary angiography, with or without revascularization; coronary artery bypass graft surgery; or both) deemed clinically indicated based on Global Registry of Acute Coronary Events 2.0 risk scores that denoted a 6-month predicted all-cause mortality ≥5%. Using propensity scoring and inverse probability weighting, we examined the association of nonuse of clinically indicated invasive care with 6-month all-cause mortality. RESULTS: Among 34,430 patients with a clinical indication for invasive care, the 18,780 patients with CKD were less likely than the 15,650 without CKD to receive such care (adjusted odds ratio, 0.68; 95% confidence interval, 0.65 to 0.72). Among patients with CKD, nonuse of invasive care was associated with higher risk of 6-month all-cause mortality (absolute risk, 21.5% versus 15.5%; absolute risk difference 6.0%; adjusted risk ratio, 1.39; 95% confidence interval, 1.29 to 1.49). Findings were consistent across multiple sensitivity analyses. CONCLUSIONS: In contemporary practice, veterans with CKD who experience ACS are less likely than those without CKD to receive clinically indicated invasive cardiac care. Nonuse of such care is associated with increased mortality.


Assuntos
Síndrome Coronariana Aguda , Insuficiência Renal Crônica , Veteranos , Humanos , Síndrome Coronariana Aguda/complicações , Síndrome Coronariana Aguda/terapia , Estudos Retrospectivos , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/terapia , Fatores de Risco , Resultado do Tratamento
2.
N Engl J Med ; 382(5): 416-426, 2020 01 30.
Artigo em Inglês | MEDLINE | ID: mdl-31995687

RESUMO

BACKGROUND: Acute kidney injury is common, with a major effect on morbidity and health care utilization. Soluble urokinase plasminogen activator receptor (suPAR) is a signaling glycoprotein thought to be involved in the pathogenesis of kidney disease. We investigated whether a high level of suPAR predisposed patients to acute kidney injury in multiple clinical contexts, and we used experimental models to identify mechanisms by which suPAR acts and to assess it as a therapeutic target. METHODS: We measured plasma levels of suPAR preprocedurally in patients who underwent coronary angiography and patients who underwent cardiac surgery and at the time of admission to the intensive care unit in critically ill patients. We assessed the risk of acute kidney injury at 7 days as the primary outcome and acute kidney injury or death at 90 days as a secondary outcome, according to quartile of suPAR level. In experimental studies, we used a monoclonal antibody to urokinase plasminogen activator receptor (uPAR) as a therapeutic strategy to attenuate acute kidney injury in transgenic mice receiving contrast material. We also assessed cellular bioenergetics and generation of reactive oxygen species in human kidney proximal tubular (HK-2) cells that were exposed to recombinant suPAR. RESULTS: The suPAR level was assessed in 3827 patients who were undergoing coronary angiography, 250 who were undergoing cardiac surgery, and 692 who were critically ill. Acute kidney injury developed in 318 patients (8%) who had undergone coronary angiography. The highest suPAR quartile (vs. the lowest) had an adjusted odds ratio of 2.66 (95% confidence interval [CI], 1.77 to 3.99) for acute kidney injury and 2.29 (95% CI, 1.71 to 3.06) for acute kidney injury or death at 90 days. Findings were similar in the surgical and critically ill cohorts. The suPAR-overexpressing mice that were given contrast material had greater functional and histologic evidence of acute kidney injury than wild-type mice. The suPAR-treated HK-2 cells showed heightened energetic demand and mitochondrial superoxide generation. Pretreatment with a uPAR monoclonal antibody attenuated kidney injury in suPAR-overexpressing mice and normalized bioenergetic changes in HK-2 cells. CONCLUSIONS: High suPAR levels were associated with acute kidney injury in various clinical and experimental contexts. (Funded by the National Institutes of Health and others.).


Assuntos
Injúria Renal Aguda/sangue , Procedimentos Cirúrgicos Cardíacos/efeitos adversos , Angiografia Coronária/efeitos adversos , Receptores de Ativador de Plasminogênio Tipo Uroquinase/sangue , Ativador de Plasminogênio Tipo Uroquinase/antagonistas & inibidores , Injúria Renal Aguda/etiologia , Injúria Renal Aguda/prevenção & controle , Idoso , Animais , Anticorpos Monoclonais/farmacologia , Anticorpos Monoclonais/uso terapêutico , Biomarcadores/sangue , Estado Terminal , Modelos Animais de Doenças , Feminino , Humanos , Unidades de Terapia Intensiva , Túbulos Renais/citologia , Túbulos Renais/efeitos dos fármacos , Túbulos Renais/patologia , Masculino , Camundongos , Camundongos Transgênicos , Pessoa de Meia-Idade , Razão de Chances , Podócitos/efeitos dos fármacos , Podócitos/metabolismo , Complicações Pós-Operatórias/sangue , Complicações Pós-Operatórias/etiologia , Medição de Risco/métodos , Ativador de Plasminogênio Tipo Uroquinase/farmacologia
3.
N Engl J Med ; 378(7): 603-614, 2018 02 15.
Artigo em Inglês | MEDLINE | ID: mdl-29130810

RESUMO

BACKGROUND: Intravenous sodium bicarbonate and oral acetylcysteine are widely used to prevent acute kidney injury and associated adverse outcomes after angiography without definitive evidence of their efficacy. METHODS: Using a 2-by-2 factorial design, we randomly assigned 5177 patients at high risk for renal complications who were scheduled for angiography to receive intravenous 1.26% sodium bicarbonate or intravenous 0.9% sodium chloride and 5 days of oral acetylcysteine or oral placebo; of these patients, 4993 were included in the modified intention-to-treat analysis. The primary end point was a composite of death, the need for dialysis, or a persistent increase of at least 50% from baseline in the serum creatinine level at 90 days. Contrast-associated acute kidney injury was a secondary end point. RESULTS: The sponsor stopped the trial after a prespecified interim analysis. There was no interaction between sodium bicarbonate and acetylcysteine with respect to the primary end point (P=0.33). The primary end point occurred in 110 of 2511 patients (4.4%) in the sodium bicarbonate group as compared with 116 of 2482 (4.7%) in the sodium chloride group (odds ratio, 0.93; 95% confidence interval [CI], 0.72 to 1.22; P=0.62) and in 114 of 2495 patients (4.6%) in the acetylcysteine group as compared with 112 of 2498 (4.5%) in the placebo group (odds ratio, 1.02; 95% CI, 0.78 to 1.33; P=0.88). There were no significant between-group differences in the rates of contrast-associated acute kidney injury. CONCLUSIONS: Among patients at high risk for renal complications who were undergoing angiography, there was no benefit of intravenous sodium bicarbonate over intravenous sodium chloride or of oral acetylcysteine over placebo for the prevention of death, need for dialysis, or persistent decline in kidney function at 90 days or for the prevention of contrast-associated acute kidney injury. (Funded by the U.S. Department of Veterans Affairs Office of Research and Development and the National Health and Medical Research Council of Australia; PRESERVE ClinicalTrials.gov number, NCT01467466 .).


Assuntos
Acetilcisteína/uso terapêutico , Injúria Renal Aguda/prevenção & controle , Angiografia , Meios de Contraste/efeitos adversos , Bicarbonato de Sódio/uso terapêutico , Cloreto de Sódio/uso terapêutico , Injúria Renal Aguda/induzido quimicamente , Administração Oral , Idoso , Angiografia/efeitos adversos , Creatinina/sangue , Método Duplo-Cego , Feminino , Hidratação , Humanos , Infusões Intravenosas , Masculino , Pessoa de Meia-Idade , Diálise Renal , Insuficiência Renal Crônica/terapia , Fatores de Risco , Resultado do Tratamento
4.
Am J Kidney Dis ; 75(2): 187-194, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31547939

RESUMO

RATIONALE & OBJECTIVE: The PRESERVE trial used a 2 × 2 factorial design to compare intravenous saline solution with intravenous sodium bicarbonate solution and oral N-acetylcysteine with placebo for the prevention of 90-day major adverse kidney events and death (MAKE-D) and contrast-associated acute kidney injury (CA-AKI) among patients with chronic kidney disease undergoing angiography. In this ancillary study, we evaluated the predictive capacities of preangiography injury and repair proteins in urine and plasma for MAKE-D, CA-AKI, and their impact on trial design. STUDY DESIGN: Longitudinal analysis. SETTING & PARTICIPANTS: A subset of participants from the PRESERVE trial. EXPOSURES: Injury (KIM-1, NGAL, and IL-18) and repair (MCP-1, UMOD, and YKL-40) proteins in urine and plasma 1 to 2 hours preangiography. OUTCOMES: MAKE-D and CA-AKI. ANALYTICAL APPROACH: We analyzed the associations of preangiography biomarkers with MAKE-D and with CA-AKI. We evaluated whether the biomarker levels could enrich the MAKE-D event rate and improve future clinical trial efficiency through an online biomarker prognostic enrichment tool available at prognosticenrichment.com. RESULTS: We measured plasma biomarkers in 916 participants and urine biomarkers in 797 participants. After adjusting for urinary albumin-creatinine ratio and baseline estimated glomerular filtration rate, preangiography levels of 4 plasma (KIM-1, NGAL, UMOD, and YKL-40) and 3 urine (NGAL, IL-18, and YKL-40) biomarkers were associated with MAKE-D. Only plasma KIM-1 level was significantly associated with CA-AKI after adjustment. Biomarker levels provided modest discriminatory capacity for MAKE-D. Screening patients using the 50th percentile of preangiography plasma KIM-1 or YKL-40 levels would have reduced the required sample size by 30% (∼2,000 participants). LIMITATIONS: Evaluation of prognostic enrichment does not account for changing trial costs, time needed to screen patients, or loss to follow-up. Most participants were male, limiting the generalizability of our findings. CONCLUSIONS: Preangiography levels of injury and repair biomarkers modestly predict the development of MAKE-D and can be used to improve the efficiency of future CA-AKI trials.


Assuntos
Acetilcisteína/administração & dosagem , Injúria Renal Aguda/metabolismo , Proteínas de Fase Aguda/metabolismo , Angiografia/efeitos adversos , Meios de Contraste/efeitos adversos , Citocinas/metabolismo , Bicarbonato de Sódio/administração & dosagem , Injúria Renal Aguda/induzido quimicamente , Injúria Renal Aguda/tratamento farmacológico , Administração Oral , Idoso , Biomarcadores/sangue , Biomarcadores/urina , Feminino , Seguimentos , Sequestradores de Radicais Livres/administração & dosagem , Taxa de Filtração Glomerular , Humanos , Infusões Intravenosas , Testes de Função Renal , Masculino , Prognóstico
5.
Am J Nephrol ; 51(5): 395-400, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32150743

RESUMO

BACKGROUND: Accurate assessment of urine flow remains challenging in both inpatient and outpatient settings. We hypothesized we could derive an equation that would accurately estimate urine flow rate (eV) through derivation from other existing equations commonly used in nephrology clinical practice. METHODS: The eV equation was derived using the Cockcroft-Gault and the measured creatinine clearance (CrCl = UCrV/PCr) equations. Within the African American Study of Kidney Disease and Hypertension (AASK; n = 570) and COMBINE (n = 133) clinical trials, we identified participants with concordant estimated and measured creatinine excretion rates to define a subset with highly accurate 24-h urine collections, to assure a reliable gold standard. We then compared eV to measured 24-h urine flow rates in these trials. RESULTS: In AASK, we found a high correlation between eV and measured urine flow rate (V; r = 0.91, p < 0.001); however, Bland-Altman plots showed that eV was 9.5 mL/h lower than V, on average. Thus, we added a correction factor to the eV equation and externally validated the new equation in COMBINE. eV and V were again highly correlated (r = 0.91, p < 0.001), and bias was improved (mean difference 5.3 mL/h). Overall, 80% of individuals had eV that was within 20% of V. CONCLUSIONS: A simple equation using urine creatinine, demographics, and body weight can accurately predict urine flow rate and may have clinical utility in situations where it is difficult to accurately measure the urine flow rate.


Assuntos
Creatinina/urina , Nefropatias/diagnóstico , Testes de Função Renal/métodos , Urodinâmica , Adulto , Idoso , Idoso de 80 Anos ou mais , Creatinina/metabolismo , Humanos , Rim/metabolismo , Nefropatias/fisiopatologia , Nefropatias/urina , Masculino , Pessoa de Meia-Idade , Eliminação Renal/fisiologia , Urinálise/métodos
6.
Ann Intern Med ; 170(6): 369-379, 2019 03 19.
Artigo em Inglês | MEDLINE | ID: mdl-30802897

RESUMO

Background: Although depression is common among patients receiving maintenance hemodialysis, data on their acceptance of treatment and on the comparative efficacy of various therapies are limited. Objective: To determine the effect of an engagement interview on treatment acceptance (phase 1) and to compare the efficacy of cognitive behavioral therapy (CBT) versus sertraline (phase 2) for treating depression in patients receiving hemodialysis. Design: Multicenter, parallel-group, open-label, randomized controlled trial. (ClinicalTrials.gov: NCT02358343). Setting: 41 dialysis facilities in 3 U.S. metropolitan areas. Participants: Patients who had been receiving hemodialysis for at least 3 months and had a Beck Depression Inventory-II score of 15 or greater; 184 patients participated in phase 1, and 120 subsequently participated in phase 2. Intervention: Engagement interview versus control visit (phase 1) and 12 weeks of CBT delivered in the dialysis facility versus sertraline treatment (phase 2). Measurements: The primary outcome for phase 1 was the proportion of participants who started depression treatment within 28 days. For phase 2, the primary outcome was depressive symptoms measured by the Quick Inventory of Depressive Symptoms-Clinician-Rated (QIDS-C) at 12 weeks. Results: The proportion of participants who initiated treatment after the engagement or control visit did not differ (66% vs. 64%, respectively; P = 0.77; estimated risk difference, 2.1 [95% CI, -12.1 to 16.4]). Compared with CBT, sertraline treatment resulted in lower QIDS-C depression scores at 12 weeks (effect estimate, -1.84 [CI, -3.54 to -0.13]; P = 0.035). Adverse events were more frequent in the sertraline than the CBT group. Limitation: No randomized comparison was made with no treatment, and persistence of treatment effect was not assessed. Conclusion: An engagement interview with patients receiving maintenance hemodialysis had no effect on their acceptance of treatment for depression. After 12 weeks of treatment, depression scores were modestly better with sertraline treatment than with CBT. Primary Funding Source: Patient-Centered Outcomes Research Institute, Dialysis Clinic, Kidney Research Institute, and National Institute of Diabetes and Digestive and Kidney Diseases.


Assuntos
Depressão/terapia , Entrevista Psicológica , Falência Renal Crônica/psicologia , Falência Renal Crônica/terapia , Aceitação pelo Paciente de Cuidados de Saúde , Diálise Renal , Adulto , Antidepressivos/efeitos adversos , Antidepressivos/uso terapêutico , Terapia Cognitivo-Comportamental , Pesquisa Comparativa da Efetividade , Depressão/etiologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Cooperação do Paciente , Medidas de Resultados Relatados pelo Paciente , Sertralina/efeitos adversos , Sertralina/uso terapêutico
7.
South Med J ; 112(10): 541-546, 2019 10.
Artigo em Inglês | MEDLINE | ID: mdl-31583416

RESUMO

OBJECTIVES: Recent studies have questioned whether intravascular iodinated contrast remains an independent cause of acute kidney injury (AKI). We sought to assess whether iodinated contrast administered during coronary angiography is an independent cause of AKI. METHODS: We identified all of the patients who underwent coronary angiography between July 1, 2015 and June 30, 2017 with a discharge diagnosis of AKI that developed within 7 days following angiography. Using chart review, we categorized patients as having multifactorial AKI if ≥1 insults other than intravascular contrast potentially contributed to kidney injury or contrast-induced AKI (CI-AKI) if the only insult was contrast administration. We compared the severity of AKI and renal function upon discharge between patients with CI-AKI and multifactorial AKI. RESULTS: We identified 78 patients who experienced AKI within 7 days following angiography, 10 (13%) of whom had CI-AKI and 68 of whom (87%) experienced multifactorial AKI. Nine (90%) patients with CI-AKI manifested stage 1 disease, 1 (10%) had stage 2 disease, and 9 (90%) experienced full recovery of kidney function. More patients with multifactorial AKI developed stage 2 or 3 disease (42% vs 10%, χ2 = 3.73, P = 0.05) and experienced either partial recovery of kidney function or persistent kidney impairment compared with patients with CI-AKI (25% vs 10%, χ2 = 1.9, P = 0.17), although the latter comparison was not statistically significant. CONCLUSIONS: The intravascular administration of iodinated contrast remains an independent cause of AKI. Compared with those with multifactorial AKI, patients with CI-AKI appear to be more likely to experience mild decrements in kidney function that recover completely.


Assuntos
Injúria Renal Aguda/induzido quimicamente , Meios de Contraste/efeitos adversos , Angiografia Coronária/efeitos adversos , Compostos de Iodo/efeitos adversos , Medição de Risco/métodos , Injúria Renal Aguda/epidemiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Meios de Contraste/administração & dosagem , Doença da Artéria Coronariana , Creatinina/sangue , Feminino , Humanos , Incidência , Injeções Intra-Arteriais , Compostos de Iodo/administração & dosagem , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Estados Unidos/epidemiologia , Adulto Jovem
8.
11.
Semin Dial ; 29(2): 158-64, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26748494

RESUMO

Remarkable advancements have been made in the provision of chronic dialysis therapy since its inception decades ago. A series of studies inform current dialysis dosing recommendations, while advancements in strategies to treat mineral and bone disease, acid-base and electrolyte disturbances, and anemia have facilitated the management of these well-recognized complications of ESRD. The collective result has been a model of chronic dialysis care focused principally on the achievement of metabolic and dialysis-related targets. In fact, guidelines such as the Kidney Disease Outcomes Quality Initiative put forth by the National Kidney Foundation recommend metrics that characterize successful dialysis care, including the attainment of specific solute clearance targets; maintenance of hemoglobin, calcium, phosphorous, and parathyroid hormone levels within target ranges; and the preferred use of primary arteriovenous fistulae for vascular access. This focus on serologic and dialysis-specific outcomes has helped renal providers manage the biochemical effects related to the loss of kidney function and has reduced ESRD-related morbidity and mortality. Yet, absent from this model of care is an emphasis on the treatment of bothersome symptoms and the impact of such treatment on quality of life (QOL). Among the many symptoms that affect patients on chronic dialysis, depression and pain are particularly common, strongly associated with decrements in QOL, and potentially treatable. This review discusses key research findings and unanswered questions pertaining to the prevalence, significance, and treatment of depression and pain and the effect of such treatment on QOL in patients dependent on chronic dialysis, with the broad goal of incorporating symptom management strategies into a paradigm of patient-centered dialysis care.


Assuntos
Depressão/etiologia , Dor/etiologia , Assistência Centrada no Paciente , Qualidade de Vida , Diálise Renal , Depressão/epidemiologia , Depressão/terapia , Humanos , Dor/epidemiologia , Manejo da Dor , Prevalência
14.
Adv Perit Dial ; 30: 27-30, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25338418

RESUMO

Studies have shown that a single-item question might be useful in identifying patients with limited health literacy. However, the utility of the approach has not been studied in patients receiving maintenance peritoneal dialysis (PD). We assessed health literacy in a cohort of 31 PD patients by administering the Rapid Estimate of Adult Literacy in Medicine (REALM) and a single-item health literacy (SHL) screening question "How confident are you filling out medical forms by yourself?" (Extremely, Quite a bit, Somewhat, A little bit, or Not at all). To determine the accuracy of the single-item question for detecting limited health literacy, we performed sensitivity and specificity analyses of the SHL and plotted the area under the receiver operating characteristic (AUROC) curve using the REALM as a reference standard. Using a cut-off of "Somewhat" or less confident, the sensitivity of the SHL for detecting limited health literacy was 80%, and the specificity was 88%. The positive likelihood ratio was 6.9. The SHL had an AUROC of 0.79 (95% confidence interval: 0.52 to 1.00). Our results show that the SHL could be effective in detecting limited health literacy in PD patients.


Assuntos
Letramento em Saúde , Diálise Peritoneal , Insuficiência Renal/psicologia , Inquéritos e Questionários , Adulto , Idoso , Estudos de Coortes , Feminino , Humanos , Masculino , Prontuários Médicos , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Curva ROC , Insuficiência Renal/terapia , Autoavaliação (Psicologia) , Adulto Jovem
15.
Am J Kidney Dis ; 62(1): 73-80, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23352380

RESUMO

BACKGROUND: Although limited health literacy is common in hemodialysis patients, its effects on clinical outcomes are not well understood. STUDY DESIGN: Observational study. SETTING & PARTICIPANTS: 260 maintenance hemodialysis patients enrolled in a randomized clinical trial of symptom management strategies from January 2009 through April 2011. PREDICTOR: Limited health literacy. OUTCOMES: Dialysis adherence (missed and abbreviated treatments) and health resource utilization (emergency department visits and end-stage renal disease [ESRD]-related hospitalizations). MEASUREMENTS: We assessed health literacy using the Rapid Estimate of Adult Literacy in Medicine (REALM) and used negative binomial regression to analyze the independent associations of limited health literacy with dialysis adherence and health resource utilization over 12-24 months. RESULTS: 41 of 260 (16%) patients showed limited health literacy (REALM score, ≤60). There were 1,152 missed treatments, 5,127 abbreviated treatments, 552 emergency department visits, and 463 ESRD-related hospitalizations. Limited health literacy was associated independently with an increased incidence of missed dialysis treatments (missed, 0.6% vs 0.3%; adjusted incidence rate ratio [IRR], 2.14; 95% CI, 1.10-4.17), emergency department visits (annual visits, 1.7 vs 1.0; adjusted IRR, 1.37; 95% CI, 1.01-1.86), and hospitalizations related to ESRD (annual hospitalizations, 0.9 vs 0.5; adjusted IRR, 1.55; 95% CI, 1.03-2.34). LIMITATIONS: Generalizability and potential for residual confounding. CONCLUSIONS: Patients receiving maintenance hemodialysis who have limited health literacy are more likely to miss dialysis treatments, use emergency care, and be hospitalized related to their kidney disease. These findings have important clinical practice and cost implications.


Assuntos
Letramento em Saúde , Recursos em Saúde/estatística & dados numéricos , Cooperação do Paciente , Diálise Renal/estatística & dados numéricos , Idoso , Estudos de Coortes , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
16.
Am J Kidney Dis ; 61(5): 649-72, 2013 May.
Artigo em Inglês | MEDLINE | ID: mdl-23499048

RESUMO

In response to the recently released 2012 KDIGO (Kidney Disease: Improving Global Outcomes) clinical practice guideline for acute kidney injury (AKI), the National Kidney Foundation organized a group of US experts in adult and pediatric AKI and critical care nephrology to review the recommendations and comment on their relevancy in the context of current US clinical practice and concerns. The first portion of the KDIGO guideline attempts to harmonize earlier consensus definitions and staging criteria for AKI. While the expert panel thought that the KDIGO definition and staging criteria are appropriate for defining the epidemiology of AKI and in the design of clinical trials, the panel concluded that there is insufficient evidence to support their widespread application to clinical care in the United States. The panel generally concurred with the remainder of the KDIGO guidelines that are focused on the prevention and pharmacologic and dialytic management of AKI, although noting the dearth of clinical trial evidence to provide strong evidence-based recommendations and the continued absence of effective therapies beyond hemodynamic optimization and avoidance of nephrotoxins for the prevention and treatment of AKI.


Assuntos
Injúria Renal Aguda/terapia , Cuidados Críticos/normas , Nefrologia/normas , Guias de Prática Clínica como Assunto , Garantia da Qualidade dos Cuidados de Saúde , Cuidados Críticos/métodos , Humanos , Nefrologia/métodos , Estados Unidos
17.
Ren Fail ; 35(6): 791-5, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23713575

RESUMO

BACKGROUND/AIMS: Contrast-induced acute kidney injury (CIAKI) is associated with an accelerated progression of underlying chronic kidney disease (CKD). We sought to characterize the rate of loss of kidney function following fistulography in patients with advanced CKD. MATERIALS/METHODS: We identified all patients with stage 4 or 5 non-dialysis-dependent CKD who underwent fistulography with iodinated contrast for non-maturing arteriovenous fistulae between 1 January 2010 and 30 November 2011. We recorded all eGFR values measured during the 6 months prior to and 6 months following the procedure, the volume and type of contrast, use of intravenous fluid and N-acetylcysteine (NAC), and timing of dialysis initiation following the procedure. We used mixed linear regression with random effects to compare the composite slope of decline in eGFR prior to and following fistulography. RESULTS: Overall, 27 patients underwent a total of 44 fistulograms. The mean age of the patients was 66 years and mean baseline eGFR was 16.7 ± 5 mL/min/1.73 m(2). Patients received a median volume of contrast of 12 mL [IQR 10-20]. None of the patients initiated acute dialysis within weeks following the procedure. In unadjusted analyses, there was no statistically significant change in the rate of decline in eGFR following fistulography compared to pre-procedure (0.14 mL/min/month versus -0.14 mL/min/month, p = 0.11). In analyses that adjusted for procedural, demographic and clinical variables, the decline in eGFR following fistulography was not statistically different than before the procedure (0.15 mL/min/month versus -0.14 mL/min/month, p = 0.11). CONCLUSIONS: Fistulography with small volumes of iodinated contrast in patients with advanced CKD does not result in more rapid progression of underlying CKD.


Assuntos
Injúria Renal Aguda/induzido quimicamente , Meios de Contraste/efeitos adversos , Falência Renal Crônica/induzido quimicamente , Ácidos Tri-Iodobenzoicos/efeitos adversos , Idoso , Angiografia/efeitos adversos , Derivação Arteriovenosa Cirúrgica/efeitos adversos , Taxa de Filtração Glomerular , Humanos , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Diálise Renal , Estudos Retrospectivos
18.
JAMA Netw Open ; 6(5): e2313359, 2023 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-37184837

RESUMO

Importance: Despite the expansion of published prediction models for acute kidney injury (AKI), there is little evidence of uptake of these models beyond their local derivation nor data on their association with patient outcomes. Objective: To systematically review published AKI prediction models across all clinical subsettings. Data Sources: MEDLINE via PubMed (January 1946 to April 2021) and Embase (January 1947 to April 2021) were searched using medical subject headings and text words related to AKI and prediction models. Study Selection: All studies that developed a prediction model for AKI, defined as a statistical model with at least 2 predictive variables to estimate future occurrence of AKI, were eligible for inclusion. There was no limitation on study populations or methodological designs. Data Extraction and Synthesis: Two authors independently searched the literature, screened the studies, and extracted and analyzed the data following the Preferred Reporting Items for Systematic Review and Meta-analyses guideline. The data were pooled using a random-effects model, with subgroups defined by 4 clinical settings. Between-study heterogeneity was explored using multiple methods, and funnel plot analysis was used to identify publication bias. Main Outcomes and Measures: C statistic was used to measure the discrimination of prediction models. Results: Of the 6955 studies initially identified through literature searching, 150 studies, with 14.4 million participants, met the inclusion criteria. The study characteristics differed widely in design, population, AKI definition, and model performance assessments. The overall pooled C statistic was 0.80 (95% CI, 0.79-0.81), with pooled C statistics in different clinical subsettings ranging from 0.78 (95% CI, 0.75-0.80) to 0.82 (95% CI, 0.78-0.86). Between-study heterogeneity was high overall and in the different clinical settings (eg, contrast medium-associated AKI: I2 = 99.9%; P < .001), and multiple methods did not identify any clear sources. A high proportion of models had a high risk of bias (126 [84.4%]) according to the Prediction Model Risk Of Bias Assessment Tool. Conclusions and Relevance: In this study, the discrimination of the published AKI prediction models was good, reflected by high C statistics; however, the wide variation in the clinical settings, populations, and predictive variables likely drives the highly heterogenous findings that limit clinical utility. Standardized procedures for development and validation of prediction models are urgently needed.


Assuntos
Injúria Renal Aguda , Meios de Contraste , Humanos , Viés , Injúria Renal Aguda/epidemiologia
19.
JAMA Intern Med ; 183(8): 795-805, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37338898

RESUMO

Importance: Patients with end-stage kidney disease (ESKD) undergoing long-term hemodialysis often experience a high burden of debilitating symptoms for which effective treatment options are limited. Objective: To compare the effectiveness of a stepped collaborative care intervention vs attention control for reducing fatigue, pain, and depression among patients with ESKD undergoing long-term hemodialysis. Design, Setting, and Participants: Technology Assisted Stepped Collaborative Care (TACcare) was a parallel-group, single-blinded, randomized clinical trial of adult (≥18 years) patients undergoing long-term hemodialysis and experiencing clinically significant levels of fatigue, pain, and/or depression for which they were considering treatment. The trial took place in 2 US states (New Mexico and Pennsylvania) from March 1, 2018, to June 31, 2022. Data analyses were performed from July 1, 2022, to April 10, 2023. Interventions: The intervention group received 12 weekly sessions of cognitive behavioral therapy delivered via telehealth in the hemodialysis unit or patient home, and/or pharmacotherapy using a stepped approach in collaboration with dialysis and primary care teams. The attention control group received 6 telehealth sessions of health education. Main Outcomes and Measures: The coprimary outcomes were changes in fatigue (measured using the Functional Assessment of Chronic Illness Therapy Fatigue), average pain severity (Brief Pain Inventory), and/or depression (Beck Depression Inventory-II) scores at 3 months. Patients were followed up for 12 months to assess maintenance of intervention effects. Results: There were 160 participants (mean [SD] age, 58 [14] years; 72 [45%] women and 88 [55%] men; 21 [13%] American Indian, 45 [28%] Black, 28 [18%] Hispanic, and 83 [52%] White individuals) randomized, 83 to the intervention and 77 to the control group. In the intention-to-treat analyses, when compared with controls, patients in the intervention group experienced statistically and clinically significant reductions in fatigue (mean difference [md], 2.81; 95% CI, 0.86 to 4.75; P = .01) and pain severity (md, -0.96; 95% CI, -1.70 to -0.23; P = .02) at 3 months. These effects were sustained at 6 months (md, 3.73; 95% CI, 0.87 to 6.60; P = .03; and BPI, -1.49; 95% CI, -2.58 to -0.40; P = .02). Improvement in depression at 3 months was statistically significant but small (md -1.73; 95% CI, -3.18 to -0.28; P = .02). Adverse events were similar in both groups. Conclusions and Relevance: This randomized clinical trial found that a technology assisted stepped collaborative care intervention delivered during hemodialysis led to modest but clinically meaningful improvements in fatigue and pain at 3 months vs the control group, with effects sustained until 6 months. Trial Registration: ClinicalTrials.gov Identifier: NCT03440853.


Assuntos
Falência Renal Crônica , Diálise Renal , Masculino , Adulto , Humanos , Feminino , Pessoa de Meia-Idade , Unidades Hospitalares de Hemodiálise , Dor/psicologia , Falência Renal Crônica/terapia , Falência Renal Crônica/psicologia , Fadiga/etiologia , Fadiga/terapia , Tecnologia
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