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Neutral Endopeptidase for Early Detection of Acute Kidney Injury After Cardiac Surgery — NEPAKI-CS  

Acute Kidney Injury Clinical Trial

Official title:
Neutral Endopeptidase for Early Detection of Acute Kidney Injury After Cardiac Surgery

Clinical Trial Summary

The investigators want to investigate if the urinary biomarker neprilysin can identify cardiac surgical patients suffering from postoperative AKI within 24 hours.

Clinical Trial Description

Acute kidney injury (AKI) is a common complication following cardiac surgery and significantly increases morbidity, duration of hospital stay, and mortality. The diagnosis of AKI relies on changes in serum creatinine (SCr) from a baseline value or decreases in urine output. Nevertheless changes of SCr to diagnose AKI are only reliable after a minimum of 48 hours.

Neutral endopeptidase, also called neprilysin (NEP) represents a single-pass membrane glycoprotein with zinc-dependent endopeptidase activity and a short cytosolic tail and is found in epithelia, fibroblasts, and neutrophils and in soluble form in the circulation, urine, and cerebrospinal fluid. Beside the focus of interest in cardiovascular medicine for its role in heart failure, where the inhibition of NEP by the administration of sacubitril/valsartan may achieve an improvement in patients with chronic heart failure and reduced ejection fraction, there is also thought to be a link to renal damage.

NEP is expressed in the brush border of proximal tubular cells, which is first shed in renal damage and therefore it is a marker for tubular damage when it is measurable in urine In this study the investigators want to investigate if NEP is a marker for earlier detection of AKI after elective cardiac surgery compared to the currently recommended Kidney Disease - Improved Global Outcomes (KDIGO) guidelines for acute kidney injury. Also, the investigators want to investigate at predefined time points the occurrence and the progression of tubular damage during cardio-pulmonary bypass (CPB) in a closed-meshed NEP detection. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03854825
Study type Observational
Source Medical University of Vienna
Contact
Status Completed
Phase
Start date October 30, 2016
Completion date April 1, 2019
View Details
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