Background: Acute heart failure (AHF) is frequently complicated by renal dysfunction, leading to cardiorenal syndrome (CRS), and poses significant management challenges.
Objective: This study aimed to elucidate the interrelationships between cardiac function, renal impairment and key biomarkers: high-sensitivity troponin T (hs-Troponin T) and N-terminal pro-brain natriuretic peptide (NT-proBNP), in patients with AHF with and without CRS.
Methods: In this prospective observational study, 60 adult patients admitted with AHF were stratified into two groups based on renal function. Baseline clinical data, laboratory measurements, and echocardiographic assessments were performed within 48 h of admission.
Results: Patients with CRS exhibited a significantly lower left ventricular ejection fraction (34.73 ± 2.49% vs. 41.70 ± 5.08%, p<0.001), elevated serum creatinine levels, and a more deranged lipid profile than patients with AHF alone. Both hs-Troponin T and NT-proBNP levels were markedly higher in the CRS group, with significant inverse correlations between these biomarkers and the ejection fraction. Multivariate analysis revealed that elevated NT-proBNP levels (OR 9.465, p<0.01) were strong predictors of prolonged hospitalization.
Conclusion: These findings highlight the complex interplay between cardiac and renal dysfunction in patients with AHF. Elevated levels of hs-troponin T and NT-proBNP, particularly NT-proBNP, underscore their potential as valuable diagnostic and prognostic tools for early risk stratification and management in high-risk patients.