Uric acid and contrast-induced nephropathy: an updated review and meta-regression analysis

Francesco Pelliccia1, Vincenzo Pasceri2, Giuseppe Patti3

  • 1Department of Cardiovascular Sciences, Sapienza University, Rome, Italy.

Insights

Serum uric acid is significantly associated with contrast-induced nephropathy (CIN). Higher uric acid levels were observed in patients who developed CIN, and it correlated with age but not other major CIN predictors.

Area of Science:

  • Nephrology
  • Cardiology
  • Biochemistry

Background:

  • Previous research suggests a link between serum uric acid levels and contrast-induced nephropathy (CIN).
  • Understanding this association is crucial for predicting and preventing kidney damage after contrast procedures.

Purpose of the Study:

  • To conduct an updated meta-analysis and meta-regression to evaluate the association between serum uric acid and CIN.
  • To determine if serum uric acid correlates with other known risk factors for CIN.

Main Methods:

  • A comprehensive literature search was performed across PubMed, Embase, and Cochrane databases up to July 31, 2018.
  • Included 10 clinical studies encompassing 6,705 patients to analyze the relationship between uric acid and CIN incidence.

Main Results:

  • A total of 12% of patients developed CIN. Significantly higher baseline uric acid levels were found in patients with CIN (6.51 vs. 5.67 mg/dl).
  • Patients with CIN were older, more frequently had diabetes and hypertension, and exhibited lower hemoglobin and ejection fraction, with higher baseline creatinine.
  • Meta-regression indicated that serum uric acid levels correlated significantly only with patient age (r = 0.13, p = 0.03).

Conclusions:

  • Serum uric acid is significantly associated with an increased risk of CIN.
  • Uric acid levels correlate with age but not with other primary predictors of CIN.
  • Further research is warranted to explore the utility of serum uric acid in CIN risk stratification.
Abstract

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