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Updated: Aug 5, 2026

A Murine Model of Hyperlipidemia-Induced Heart Failure with Preserved Ejection Fraction
Published on: March 29, 2024
Hyperuricemia Reflects Cardiometabolic Burden Rather than Left Ventricular Systolic Dysfunction Across Heart Failure
Raluca Ibănescu1,2,3,4, Sebastian Ciurescu4, Roxana Buzaș1,2,3
1Advanced Cardiology and Haemostaseology Research Center, "Victor Babeș" University of Medicine and Pharmacy, No. 2 Eftimie Murgu Square, 300041 Timișoara, Romania.
Insights
Serum uric acid does not independently predict reduced ejection fraction in acute heart failure (AHF). Elevated uric acid levels reflect metabolic distress and congestion, not direct heart dysfunction.
Area of Science:
- Cardiology
- Biochemistry
- Internal Medicine
Background:
- Acute heart failure (AHF) is a major cause of illness worldwide, requiring effective biomarkers for risk assessment.
- Hyperuricemia is common in heart failure patients; it may indicate cardiometabolic distress rather than cause heart dysfunction.
Purpose of the Study:
- To investigate if serum uric acid independently predicts left ventricular ejection fraction (LVEF) in patients with AHF.
- To assess the diagnostic utility of uric acid in differentiating heart failure phenotypes.
Main Methods:
- Retrospective analysis of 306 AHF patients from a tertiary hospital.
- Statistical analysis included correlation, t-tests, and multivariable linear/logistic regression.
- Adjusted for comorbidities and diuretic use when analyzing LVEF predictors.
Main Results:
- Hyperuricemia was observed in 64.6% of the study cohort.
- Serum uric acid did not significantly predict LVEF variance (p=0.356).
- Uric acid showed no diagnostic utility in classifying heart failure phenotypes (OR=0.995, p=0.973).
Conclusions:
- Serum uric acid is not an independent predictor of reduced LVEF in AHF.
- Elevated uric acid likely reflects systemic metabolic issues and diuretic effects, not direct cardiac pathology.
Abstract:
Background/Objectives: Acute heart failure (AHF) is a leading cause of global morbidity, necessitating the search for reliable biomarkers to guide risk stratification. While hyperuricemia is highly prevalent in heart failure patients and historically considered a potential "cardiotoxin", contemporary evidence suggests that it may function as a surrogate biomarker for cardiometabolic distress rather than an independent driver of myocardial dysfunction. This study aimed to determine whether serum uric acid acts as an independent predictor of left ventricular ejection fraction (LVEF) in a high-risk cardiometabolic cohort. Methods: This retrospective, cross-sectional study analyzed 306 patients hospitalized for acute heart failure at a tertiary hospital in Timisoara, Romania. Data were analyzed using JASP (v0.96). Statistical methods included Shapiro-Wilk testing, Spearman's rank-order correlation, and independent samples t-tests. Multivariable ordinary least squares linear regression and maximum likelihood logistic regression were employed to identify predictors of LVEF and diagnostic classification, adjusting for comorbidities and diuretic administration. Results: Hyperuricemia was present in 64.6% of the cohort. Multivariable linear regression demonstrated that while age, sex, and diuretic use significantly predicted LVEF variance, serum uric acid did not (p = 0.356). Furthermore, logistic regression confirmed uric acid possessed no diagnostic utility in differentiating heart failure phenotypes (OR = 0.995; p = 0.973). Conclusions: Serum uric acid is not an independent predictor of reduced ejection fraction in acute heart failure patients. Elevated uric acid appears to be a biochemical shadow of generalized metabolic distress, systemic congestion, and the pharmacokinetic effects of diuretic therapy rather than a pathological driver of contractile dysfunction.
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