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Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI
Abstract
Objective: CIN is a significant complication after PCI for CTO. Elevated SUA levels have been implicated in renal injury, but their predictive value for CIN in CTO-PCI patients remains unclear. The present investigation sought to examine the link between SUA levels and CIN risk in this population.
Methods: This retrospective observational study included 225 patients with CTO undergoing PCI at Diyarbakır Gazi Yaşargil Training and Research Hospital from April 2017 to March 2023. Patients were partitioned into three groups based on baseline SUA levels: ≤5.2 mg/dL (n=75), 5.3–6.6 mg/dL (n=75), and ≥6.7 mg/dL (n=75). CIN was defined as a >25% increase in serum creatinine within 48–72 hours post-PCI. Clinical, demographic, and laboratory parameters were compared using chi-square, ANOVA, or Kruskal-Wallis tests. Logistic regression analyses and ROC analyses wereperformed to determine SUA’s predictive value for CIN.
Results: CIN occurred in 44 patients (19.6%). Higher SUA levels were associated with increased CIN incidence (p<0.001), higher chronic kidney disease prevalence (p<0.001), lower ejection fraction(EF) (p=0.027), and increased mortality (p=0.023). ROC analysis identified a SUA cutoff of 5.95 mg/dL (AUC=0.643, 95% CI: 0.561–0.725, p=0.003) with 72.7% sensitivity and 56.4% specificity. In univariable analysis, age, EF, C-reactive protein, and SUA were significant predictors of CIN, but none remained significant in multivariable analysis.
Conclusions: Elevated SUA levels are associated with increased CIN risk in CTO-PCI patients. Routine SUA assessment may identify high-risk patients, supporting enhanced preventive strategies.
Keywords
Ethical Statement
Ethical clearance for this research was acquired from the Institutional Review Board of Diyarbakır Gazi Yaşargil Training and Research Hospital (Approval No: 200/2022, dated 21 October 2022). The research was carried out in compliance with the principles outlined in the Declaration of Helsinki. Given its retrospective nature, informed consent was not required.
References
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Details
Primary Language
English
Subjects
Health Care Administration, Medical Education, Health Services and Systems (Other)
Journal Section
Research Article
Publication Date
December 12, 2025
Submission Date
August 12, 2025
Acceptance Date
October 17, 2025
Published in Issue
Year 2025 Volume: 52 Number: 4
APA
Kayan, F., & Karahan, M. Z. (2025). Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI. Dicle Medical Journal, 52(4), 695-702. https://doi.org/10.5798/dicletip.1840647
AMA
1.Kayan F, Karahan MZ. Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI. Dicle Medical Journal. 2025;52(4):695-702. doi:10.5798/dicletip.1840647
Chicago
Kayan, Fethullah, and Mehmet Zülkif Karahan. 2025. “Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI”. Dicle Medical Journal 52 (4): 695-702. https://doi.org/10.5798/dicletip.1840647.
EndNote
Kayan F, Karahan MZ (December 1, 2025) Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI. Dicle Medical Journal 52 4 695–702.
IEEE
[1]F. Kayan and M. Z. Karahan, “Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI”, Dicle Medical Journal, vol. 52, no. 4, pp. 695–702, Dec. 2025, doi: 10.5798/dicletip.1840647.
ISNAD
Kayan, Fethullah - Karahan, Mehmet Zülkif. “Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI”. Dicle Medical Journal 52/4 (December 1, 2025): 695-702. https://doi.org/10.5798/dicletip.1840647.
JAMA
1.Kayan F, Karahan MZ. Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI. Dicle Medical Journal. 2025;52:695–702.
MLA
Kayan, Fethullah, and Mehmet Zülkif Karahan. “Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI”. Dicle Medical Journal, vol. 52, no. 4, Dec. 2025, pp. 695-02, doi:10.5798/dicletip.1840647.
Vancouver
1.Fethullah Kayan, Mehmet Zülkif Karahan. Serum Uric Acid Predicts Contrast-Induced Nephropathy in Chronic Total Occlusion PCI. Dicle Medical Journal. 2025 Dec. 1;52(4):695-702. doi:10.5798/dicletip.1840647