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Uric Acid to Albumin Ratio for Predicting Contrast Associated Acute Kidney Injury After Cardiac and Non Cardiac Procedures

28 september 2026 uppdaterad av: Maher Nasser Rsof Atia, Assiut University

Predictive Value of the Uric Acid to Albumin Ratio for Contrast Associated Acute Kidney Injury After Cardiac and Non Cardiac Procedures

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.

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Studietyp

Observationell

Inskrivning (Beräknad)

100

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

N/A

Kön som är behöriga för studier

Allt

Testmetod

Icke-sannolikhetsprov

Studera befolkning

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.

Beskrivning

Inclusion Criteria:

  • 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.
  • Available baseline (pre-procedural) serum creatinine, uric acid, and albumin measurements.

Exclusion Criteria:

  • Severe chronic kidney disease or end-stage renal disease on regular maintenance hemodialysis (baseline eGFR < 15 mL/min/1.73 m^2).
  • 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.
  • Known history of gout, current use of urate-lowering therapy, or hematologic malignancy affecting uric acid metabolism.
  • Severe hepatic disease or marked proteinuria affecting serum albumin independently of the study condition.
  • Emergent PCI where baseline laboratory samples could not be obtained prior to contrast exposure.
  • Patient death occurring before the 48 to 72 hour post-procedural serum creatinine evaluation could be performed.
  • Pregnancy.
  • Refusal of informed consent or loss to follow-up prior to outcome assessment.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiv: PROSPECTIVE

Kohorter och interventioner

Grupp / Kohort
Cardiac Group (PCI)

Adult patients undergoing percutaneous coronary intervention (PCI) requiring exposure to iodinated contrast media. Baseline serum creatinine, uric acid, and albumin are measured pre-procedure, and renal function is monitored at 48 and 72 hours post-procedure to assess the development of contrast-associated acute kidney injury (CA-AKI).

Non-Cardiac Group

Adult patients undergoing non-cardiac diagnostic or interventional procedures requiring exposure to iodinated contrast media. Baseline serum creatinine, uric acid, and albumin are measured pre-procedure, and renal function is monitored at 48 and 72 hours post-procedure to assess the development of contrast-associated acute kidney injury (CA-AKI).

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Number of Participants With Contrast-Associated Acute Kidney Injury (CA-AKI)
Tidsram: 72 hours post-procedure

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.

72 hours post-procedure

Samarbetspartners och utredare

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Sponsor

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

1 november 2026

Primärt slutförande (Beräknad)

1 november 2027

Avslutad studie (Beräknad)

1 december 2027

Studieregistreringsdatum

Först inskickad

28 september 2026

Först inskickad som uppfyllde QC-kriterierna

28 september 2026

Första postat (Faktisk)

2 oktober 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

2 oktober 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

28 september 2026

Senast verifierad

1 september 2026

Mer information

Termer relaterade till denna studie

Andra studie-ID-nummer

  • UAR in Contrast-Associated AKI

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