About this trial
Contrast-associated acute kidney injury (CA-AKI) is a potential complication that can occur following exposure to iodinated contrast media during diagnostic and interventional procedures, contributing to prolonged hospital stays, increased morbidity, and higher mortality. Although several clinical risk factors are well-recognized, pre-procedural risk stratification remains challenging. The serum uric acid-to-albumin ratio (UAR) has emerged as a composite biomarker reflecting oxidative stress and inflammation that may help identify vulnerable patients prior to contrast exposure.
The primary purpose of this prospective observational cohort study is to evaluate the predictive performance of the pre-procedural uric acid-to-albumin ratio for the development of contrast-associated acute kidney injury. The study will also compare the predictive value of UAR between patients undergoing cardiac procedures, specifically percutaneous coronary intervention (PCI), and those undergoing non-cardiac contrast procedures.
A total of 100 adult participants will be enrolled across two groups: 50 patients undergoing PCI and 50 patients undergoing non-cardiac contrast procedures. Baseline venous blood samples will be obtained prior to the procedure to measure serum creatinine, uric acid, and albumin levels. Follow-up kidney function tests will be evaluated at 48 and 72 hours post-procedure to detect the development of CA-AKI and assess the diagnostic accuracy of pre-procedural UAR.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Adult patients aged 18 years or older undergoing a cardiac or non-cardiac procedure requiring iodinated contrast media.
Cardiac group: patients undergoing percutaneous coronary intervention (PCI).
Non-cardiac group: patients undergoing other diagnostic or interventional contrast procedures.
Provision of written informed consent prior to enrollment.
Disqualifiers
Severe chronic kidney disease or end-stage renal disease on regular maintenance hemodialysis (baseline eGFR < 15 mL/min/1.73 m²).
Exposure to iodinated contrast media within the preceding 7 to 10 days.
Acute kidney injury from any cause present at admission or prior to contrast exposure.
Active infection, sepsis, or systemic inflammatory response syndrome at the time of enrollment.
Trial population
Adult patients admitted to or evaluated at the Internal Medicine Department and related catheterization and interventional units at Assiut University Hospital who are scheduled to undergo cardiac (percutaneous coronary intervention) or non-cardiac diagnostic and interventional procedures requiring exposure to iodinated contrast media.
Trial design
Cohort
Prospective
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
Number of Participants With Contrast-Associated Acute Kidney Injury (CA-AKI)
Defined as an absolute increase in serum creatinine of at least 0.5 mg/dL (44.2 micromol/L) or a relative increase of at least 25% from baseline, evaluated within 72 hours following iodinated contrast media exposure.
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Sponsors and contacts
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