View clinical trials related to Acute Kidney Injury.
Filter by:Acute kidney injury (AKI) complicates over 50% of cardiac surgical procedures in children where it increases morbidity and the use of healthcare resources. The pathogenesis of AKI is poorly understood, current diagnostic tests lack specificity and sensitivity, and there is no effective treatment. Improving outcomes in patients at risk of AKI has recently been defined as a National Health Service priority. The investigators are currently undertaking a program of work that is evaluating the role of plasma-derived microvesicles (MV) and MV associated microRNAs (miRNA) as diagnostic biomarkers or therapeutic targets in cardiac surgery patients at risk of developing AKI. Preliminary results indicate that these biomarkers may have clinical utility in adults. An important consideration is whether these biomarkers also have utility in children undergoing cardiac surgery. Measurement of MV at serial time points in children presents ethical challenges related to conducting clinical research in critically ill subjects. It also presents technical challenges related to the very small volumes of blood that may be sampled safely from babies and infants undergoing surgery. The aim of the study is to provide estimates of the perioperative variance of MV concentrations in 24 children undergoing cardiac surgery, as well as the frequency of AKI and other adverse events, protocol adherence and recruitment rates. This will assist with the design of a subsequent prospective observational study that will consider the role of MV/miRNA in children undergoing cardiac surgery.
Acute kidney injury (AKI) in critically ill neonates is common and associated with significant morbidity and mortality. No targeted therapeutic treatment strategies have been established for AKI in neonates. Within a clinical pharmacokinetic and pharmacodynamic conceptual framework, this project will examine the medication aminophylline as a potential treatment approach for AKI.
The specific aim of this study is to evaluate the safety of non-steroidal anti-inflammatory drugs (NSAIDs) and their impact on renal function and/or contribution to exercise-associated hyponatremia (EAH) during an ultramarathon foot race. There is currently much debate over whether NSAID ingestion during endurance events contributes to acute kidney injury. Endurance events often ignite a "perfect storm" of physiologic insults- heat stress, dehydration, and myopathy- which can all negatively impact kidney function. There is a concern that NSAIDs may further potentiate these negative effects as well as contribute to EAH through its anti-diuretic affect. To date, no powered, prospective study has ever examined the effects of NSAIDs on either of these two biochemical outcomes Ultramarathon endurance events, defined as any race longer than a marathon (26.2 miles), are increasing in popularity, with a 10% increase in annual participants, and more than 69,000 finishers worldwide in 2013. Considerable literature has documented alterations in serum biochemical profiles of these endurance athletes, with consistent evidence of elevated serum creatinine (Cr) levels in healthy race finishers as well as those seeking medical care. While acute renal failure in ultramarathon runners is a rare occurrence, acute kidney injury is common, ranging from 34% in a single-stage ultramarathon to 55-80% in multi-stage ultramarathons. The evidence is equivocal regarding NSAID ingestion and AKI. One study showed that runners who ingested NSAIDs prior to marathons had greater post-race creatinine levels than matched controls as well as higher rates of hospitalization and acute renal failure. However, this contrasts with several other studies that showed a marked lack of difference in creatinine levels or development of acute kidney injury between NSAID users and non-users during ultramarathons. The only randomized trial to date on this subject found no difference in serum creatinine levels between the NSAID and placebo groups at ultramarathon race end, however conclusions were limited by a small unpowered sample size. Exercise associated hyponatremia (EAH), defined as a serum sodium concentration below 135mEq/L, is recognized as a relatively common issue in endurance running events. The incidence of EAH varies depending upon the distance of the race, with reported values of 3-28% for marathons, 23 - 38% for triathlons and 4-51% in single-stage ultramarathons. EAH is likely under-diagnosed as athletes are often asymptomatic. While EAH most often manifests as non-specific symptoms such as nausea, vomiting, dizziness, and fatigue, it can be a potentially fatal disease that can progress to encephalopathy, seizures, pulmonary edema, and death. There have been no large prospective studies examining the relationship between EAH and NSAID ingestion.
Contrast-induced acute kidney injury (CI-AKI) has been recognized as the third most common cause of hospital acquired AKI, after hypotension-associated hypo-perfusion and post-operative AKI. The development of CI-AKI after cardiac catheterization is associated with a significant increase in both short-term and long-term mortality and morbidities, as well as an increase in length of stay and cost. The only marker of renal function that has predictive ability is creatinine and it has significant limitations in identifying patients who will develop AKI. Therefore, a diagnostic test for predicting CI-AKI risk would have widespread clinical utility. The primary purpose of this study is to measure the association between baseline expression of senescence markers in blood using SenesceTest and the occurrence of CI-AKI post cardiac catheterization.
NephroCheck is measuring the concentration of a certain protein combination in the urine of patients. In elevated values there is a probability of renal failure (already proven in intensive care patients). The investigators would like to investigate whether the investigators can predict renal failure in patients receiving contrast enhanced CT's in the emergency department. That would lead to an earlier nephrologist consult in those patients.
Cisplatin is a potent chemotherapeutic agent, however, its nephrotoxicity manifested by acute kidney injury (AKI) often limits applicability. Dipeptidylpeptidase-4 (DPP4) inhibitors are well known to improve glucose intolerance by augmentation of endogenous glucagon like peptide (GLP-1) and glucose-dependent insulinotropic peptide (GIP). DPP4 inhibitor also has the potential anti-apoptotic and renoprotective effect in a mouse model of cisplatin-induced AKI. This is a single-center, randomized, double-blind, parallel-group, placebo-controlled, prospective study to investigate the renoprotective effect of DPP4 inhibitor on cisplatin-induced AKI. A total 182 patients, who are scheduled to treat with cisplatin, will be recruited and randomly assigned to either Gemigliptin or placebo groups. Subjects will take study drugs for 8 days starting from one day before cisplatin treatment. Serum creatinine (Cr) and estimated glomerular filtration rate (eGFR) will be measured at 7 days after cisplatin treatment.
Previous studies (1-5) have demonstrated that oxygen delivery (DO2) and carbon dioxide production (VCO2) during cardiopulmonary bypass (CPB) are associated with renal outcome in cardiac surgery. The critical value for DO2 is around 262 - 272 mL/min/m2, and the correspondent critical value of DO2/VCO2 ratio is around 5.0. Patients with nadir DO2 and DO2/VCO2 ratio below these critical levels have an increased incidence of acute kidney injury (AKI) after cardiac operations. These observations offer an interpretation for the well-known deleterious effects of excessive hemodilution during CPB, supported by many studies where an association between nadir hematocrit (HCT) on CPB and bad outcomes (especially renal) was found (6-8). It is reasonable to hypothesize that a low oxygen delivery may determine an ischemic damage to the kidney, that due to its peculiar circulation is particularly susceptible to a decrease in the oxygen supply. However, there is no evidence that a strategy directed towards the specific goal of avoiding critical values of DO2 during CPB may actually decrease the postoperative AKI rate. The present study is designed to verify the hypothesis that a strategy based on a goal-directed perfusion, aimed to avoid a nadir DO2 below the critical threshold, is effective in limiting the postoperative AKI rate.
The main purpose of this trial is to demonstrate the safety, tolerability and pharmacokinetics (PK) of CXA-10, at potentially therapeutic doses, in the target patient population comprised of subjects with Stage 3 and 4 chronic kidney injury (CKI). In addition, associated pharmacodynamic (PD) effects of CXA-10 will be investigated.
The aim of the study is to assess the ability of Levosimendan to reduce the postoperative acute kidney injury in pediatric patients undergoing surgery for congenital heart disease (CHDs).
The aim of this study was to evaluate, in patients with "lower fluid status" defined by bioimpedance analysis, whether two different protocol of IV isotonic saline infusion are associated with different volume expansion and differing risks for CI-AKI in patients undergoing coronary angiographic procedures.