Active clinical trials for "Acute Kidney Injury"

Surgical treatment of hip fracture may be complicated by acute kidney injury. The aim of this study is to investigate whether the investigators can find a better biomarker than creatinine to recognize this problem at an earlier stage.

Background: Severe acute kidney injury (AKI) among critically ill patients is sometimes treated with renal replacement therapy (RRT), and in Sweden continuous RRT (CRRT) is the dominant modality used in this population. The optimal timing of renal replacement therapy (RRT) initiation in critically ill patients with acute kidney injury (AKI) is unknown No consensus to guide clinical practice on this issue Lack of consistency regarding outcome measurements; should we look at morbidity or mortality? Wide variability in the timing of RRT initiation in the intensive care unit (ICU) population Hypothesis: This is an important knowledge gap in the support of critically ill patients with AKI and we hypothesize that early initiation of RRT is beneficial. Methods: The present study aims to test this hypothesis by using a large scale high resolution intensive care database, the Clinisoft repository. In this database, we have information on >60 000 patients from three different hospitals and five ICUs, during the years 2005 up until today. The repository will be crossmatched, using the unique Swedish national ID number, with hospital records; to gather information on preexisting illnesses, chronic medication and post-ICU outcomes. It is likely that over 5%, more than 3000 patients, have been treated with RRT. We will categorize these patients into "early" and "late" groups using both biomarker data and clinical data. Importantly, early and late RRT can be categorized using biomarkers, like urea and creatinine; using degree of fluid accumulation, by level of pH in blood and just by using hours-days after ICU admission. All possible definitions of early/late RRT initiation can be tested in this study. Outcomes: Our primary outcome is 90 day mortality. Secondary outcomes include: mortality at 30, 60, 180 and 365 days. Two- and three year mortality. Morbidity, measured as end-stage renal disease (ESRD) for 90-day survivors. ICU length of stay, hospital length of stay.

TEE has a definite effect on the evaluation of cardiac structure and function in perioperative cardiac surgery. However, in CABG, previous studies on TEE mainly focused on whether to change the surgical plan rather than improve the clinical prognosis. There are few related studies on the evaluation of prognosis, and these studies have low efficacy and inconsistent conclusions. Acute kidney injury is the most common complication of CABG surgery and is independently associated with hospitalization and long-term mortality. In CABG patients, acute kidney injury, in addition to operation-related factors, is closely related to renal perfusion. These patients often exist serious coronary multivessel lesions and right heart dysfunction, which can cause the system obstacle of regurgitation of the inferior vena cava and kidney blood stasis, while the inappropriate rehydration fluid overload will affect kidney blood perfusion, which may be one of the reasons for the kidney injury. Therefore, appropriate volume status plays an important role in maintaining right heart function and renal perfusion. What indicators can the investigators use to effectively evaluate the patient's volume status and monitor the patient's right heart function? In recent years, ultrasound has been used as an effective tool to assess patient volume status , right heart function, and to guide patient fluid management. Many studies have confirmed that the respiratory variability of inferior vena cava diameter (ΔIVC) measured by TTE has a good correlation with the volume status of patients on mechanical ventilation, which has a high diagnostic value for predicting the fluid responsiveness and guiding fluid management.However, no study has been reported using TEE measurements of ΔIVC to assess volume status and guide fluid management in patients undergoing cardiac bypass surgery. Previous studies have confirmed that TAPSE measured by TTE is independently associated with AKI in ICU patients and can predict the occurrence of AKI in such patients. However, TAPSE monitored by TEE have not been reported in this regard. Can ΔIVC and TAPSE predict the incidence of AKI and major cardiovascular and cerebrovascular adverse events in CABG patients? Therefore, the investigators designed this observational study to further scientifically confirm the validity and guiding significance of ΔIVC and TAPSE in CABG, so as to protect and improve patients' renal function , reduce postoperative mortality and improve the clinical prognosis.

The goal of this project to better understand the immune-modulatory effects of continuous renal replacement therapy (CRRT) in neonatal and pediatric patients, particularly those receiving extracorporeal life support (ECLS). Little is known about the effects of CRRT in this particular population and improved knowledge will be useful clinically and may lead to novel therapeutic approaches and improved outcomes for these critically ill patients.

Cisplatin (CisP) is a chemotherapeutic agent used to treat head and neck and lung cancer in adults and over 15 different pediatric cancers. Despite its known toxicity, CisP is still widely used as a first line chemotherapy as it is so effective. Nephrotoxicity is one of the most common adverse effects of CisP, occurring in 20-50% of patients. It manifests as acute kidney injury (AKI) typically within the first few days of exposure and is associated with short and long-term morbidity. Furthermore, AKI diagnosis is only possible once kidney damage has progressed to functional impairment, when mitigation strategies are ineffective. Tests that could predict AKI risk pre-emptively or diagnose early-stage AKI before functional loss would be very impactful, affording opportunities for prevention or early intervention to mitigate CisP nephrotoxicity, reduce morbidity and improve health outcomes. The field of metabolomics seeks to identify patterns of small molecules (metabolites) involved in cell or tissue metabolism related to disease states, or patient factors like lifestyle and genetics. Plasma and urine are ideal for sampling the metabolome, which can identify at-risk patients and reveal disease-related changes earlier than existing diagnostic methods do. In CisP-treated children and adults from across Canada, we will identify urine and plasma metabolite profiles a) prior to CisP dosing that predict CisP AKI risk, and b) shortly after dosing to identify early-stage nephrotoxicity, before clinical signs of AKI are detectable. Our identified biomarkers will allow individualization of CisP treatment based on the level of nephrotoxicity risk and the design of trials to mitigate the progression and complications of CisP nephrotoxicity.

This study will involve measurement of levels of a novel urinary biomarker of renal ischemia, L-FABP. The purpose of the study is to perform a clinical validation of the ability of L-FABP measurements in urine using the RENISCHEM L-FABP POC Test to predict the development of AKI within 2 days following cardiac and vascular catheterization procedures involving exposure to radiocontrast media.

The post market surveillance study will employ a prospective, multi-center, single-arm, observational design to capture data on children who undergo CRRT using the Carpediem™ system. Participating clinicians will manage subjects in accordance to their local standard of care practices and decisions on initiating, modifying or discontinuing CRRT are up to the local investigative team's prescription. A minimum of 10 centers in the United States, that have been trained on the use of the Carpediem™ system, will be invited to participate in the study. After obtaining institutional review board approval and written informed consent from a parent or legally authorized representative (LAR), data from all subjects treated with the Carpediem™ system will be included in the study. A minimum of 35 subjects will be enrolled and sites may be asked to screen and enroll patients for the study for up to 36 months. Status of subjects discharged from hospital will be collected at 30- and-90 days following hospital discharge by phone interviews in accordance to local standard of care practices, review of in-hospital records or in-clinic visit, as available.

The goal of the study is to assess the prevalence of contrast-associated acute kidney injury in patients with stable coronary artery disease, ST-elevation myocardial infarction and unstable angina/NSTEMI, assess the risk factors of contrast-induced acute kidney injury development and the influence of contrast-induced kidney injury on 1-year prognosis.

The investigators selected patients diagnosed with sepsis who were admitted to the Intensive Care Unit (ICU) of Huai'an First People's Hospital between June 2022 and December 2023, as well as healthy individuals with normal kidney function during the same period, for the research. The investigators collected blood samples from patients with septic shock or sepsis at 6 hours, 12 hours, 24 hours, 48 hours, 3 days, 5 days, and 7 days after diagnosis， and also collected blood samples from the healthy individuals. The blood samples were stored in gel separation vacuum tubes containing heparin as an anticoagulant. The supernatant was removed and stored at -80°C, and the levels of plasma ELA (enzyme-linked immunosorbent assay) were measured using a standardized ELA kit. Additionally, serum NGAL (neutrophil gelatinase-associated lipocalin) and creatinine levels were measured simultaneously. The subjects were divided into three groups based on the KDIGO diagnostic criteria: sepsis-associated acute kidney injury (S-AKI) group, sepsis non-AKI group, and normal control group. Finally, the data were analyzed to determine the early diagnostic value of ELA for S-AKI. Approximately 70 specimens were collected in total.

Acute kidney injury (AKI) after major surgery is a well-known complication. The incidence of AKI after major surgery ranges from 13% to 50%. The morbidity and mortality rates increase in patients with AKI due to the treatments applied and the prolonged hospital stay. In addition, as a result of all these processes, hospital costs increase and burden the health systems. Classifications such as Acute Kidney Injury Network (AKIN) or Kidney Disease Improving Global Outcomes (KDIGO) are used in the diagnosis of AKI. In these classifications, evaluation is made based on kidney damage, serum creatinine (Scr), and urine output. However, Scr; is affected by factors such as age, gender, diet, muscle mass, and medication. In addition, in healthy individuals in terms of kidney reserve, a loss of up to 50% in nephrons is tolerated by the body and there is no change in Scr values. Therefore, the onset of the increase in Scr values occurs 48-72 hours after kidney damage. This situation causes delays in the treatments applied and increases morbidity and mortality rates. For these reasons, interest in biomarkers used in the early diagnosis of AKI has increased in recent years. Neutrophil gelatinase-associated lipocalin (NGAL) is a 25 KDa, neutrophil-derived molecule from the lipocalin family. It is also secreted in small amounts from kidney, prostate, and respiratory tract epithelial cells. After ischemic and nephrotoxic acute tubular necrosis, NGAL levels peak at the 3rd hour and remain elevated for approximately 24 hours. In patients who do not progress to AKI, NGAL levels begin to decrease in the 1st hour after injury. When the current literature is examined, scientific studies on NGAL have mostly been carried out on cardiovascular surgery cases to date. There are very few studies evaluating NGAL levels in patients who develop AKI after major abdominal surgery. These few studies evaluated either serum NGAL or urinary NGAL levels. In this study, both serum NGAL and urinary NGAL will be measured simultaneously to detect AKI that may develop in patients undergoing major abdominal surgery.