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[The relationship between hyperuricemia and contrast-induced nephropathy in patients with chronic kidney disease
Yuan-Hui Liu1, Ning Tan2, Yong Liu
1Graduate School, Southern Medical University,Guangzhou 510515, China.
Insights
Hyperuricemia is an independent predictor of contrast-induced nephropathy (CIN) in patients with chronic kidney disease (CKD) undergoing percutaneous coronary intervention (PCI). This finding highlights the importance of managing uric acid levels in this vulnerable patient population.
Area of Science:
- Nephrology
- Cardiology
- Metabolic Disorders
Context:
- Chronic kidney disease (CKD) patients undergoing percutaneous coronary intervention (PCI) are at high risk for contrast-induced nephropathy (CIN).
- Hyperuricemia, a condition of elevated serum uric acid, is prevalent in CKD patients.
- The association between hyperuricemia and CIN in this specific patient cohort remains incompletely understood.
Purpose:
- To investigate the relationship between hyperuricemia and the incidence of CIN.
- To identify hyperuricemia as an independent risk predictor for CIN in CKD patients undergoing PCI.
Summary:
- A study of 446 CKD patients undergoing PCI found a significantly higher incidence of CIN in the hyperuricemic group (23.9%) compared to the normouricemic group (10.4%).
- Hyperuricemia was identified as an independent predictor of CIN, alongside advanced age, emergent PCI, and anemia.
- Patients with CIN experienced higher in-hospital mortality and adverse events, particularly in the hyperuricemic subgroup.
Impact:
- This research identifies hyperuricemia as a modifiable risk factor for CIN in CKD patients undergoing PCI.
- Findings suggest that monitoring and managing serum uric acid levels may help reduce the incidence of CIN and improve outcomes in this high-risk population.
- The study underscores the importance of a comprehensive risk assessment for CIN, incorporating metabolic factors like hyperuricemia.
Objective:
To investigate the relationship between hyperuricemia and contrast-induced nephropathy (CIN) in patients with chronic kidney disease (CKD) undergoing percutaneous coronary intervention (PCI).
Methods:
A total of 446 consecutive patients with CKD undergoing PCI in Guangdong general hospital were enrolled in this study. Patients were divided into hyperuricemic group (n = 205) and normouricemic group (n = 241).Hyperuricemia was defined as serum uric acid > 420 µmol/L for male, > 357 µmol/L for female. CIN was defined as ≥ 44.2 µmol/L or ≥ 25% increase from baseline Serum creatinine within 48-72 hours after contrast medium exposure, and that was not attributable to other causes.In hospital incidences of CIN and the major adverse cardiac events were compared between the two groups. The relationship between the incidence of CIN and hyperuricemia was evaluated by multivariate logistic regression analysis.
Results:
CIN occurred in 16.6% (74/446) of patients, and incidence of CIN was significantly higher in the hyperuricemic group than in the normouricemic group [23.9% (49/446) vs. 10.4% (25/446) , P = 0.000]. Patients who developed CIN had higher in hospital mortality [14.9% (11/74) vs. 1.3% (5/372), P = 0.000]. Need for renal replacement therapy, acute heart failure, intra-aortic balloon pump use and the hypotension after PCI were significantly higher in the hyperuricemic group compared with normouricemic group (P < 0.01 or P < 0.05) . Multivariate analysis indicates that hyperuricemia (OR = 1.9, 95%CI:1.1-3.5, P = 0.037), age > 75 years (OR = 3.2, 95%CI:1.8-5.7, P = 0.000) , emergent PCI (OR = 2.9, 95%CI:1.6-5.1, P = 0.000) and anemia (OR = 2.1, 95%CI:1.2-3.8, P = 0.012) were predictors of CIN in patients with CKD.
Conclusion:
Hyperuricemia is the independent risk predictor of CIN in patients with CKD undergoing PCI.
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