# Association of NT-proBNP and sST2 with Diastolic Dysfunction in Cirrhotic Patients and Its Therapeutic Implications

## TL;DR

This study finds that combining NT-proBNP and sST2 biomarkers improves diagnosing heart issues in cirrhosis patients, helping guide treatment decisions.

## Contribution

The study introduces a multimarker model combining NT-proBNP and sST2 for improved diagnostic accuracy of diastolic dysfunction in cirrhotic patients.

## Key findings

- Cirrhotic patients had significantly higher NT-proBNP and sST2 levels compared to healthy controls.
- A multimarker model combining age, NT-proBNP, and sST2 improved diagnostic accuracy for diastolic dysfunction to 75%.
- NT-proBNP levels correlated with congestion markers like left atrial volume and pulmonary artery systolic pressure.

## Abstract

Cirrhotic cardiomyopathy encompasses structural and functional cardiac abnormalities occurring in patients with liver cirrhosis despite the absence of pre-existing heart disease, yet its diagnosis remains challenging. Although echocardiography is the standard diagnostic tool, circulating biomarkers may provide complementary value when imaging findings are inconclusive. This study evaluated the association between N-terminal pro-B-type natriuretic Peptide (NT-proBNP), soluble Suppression of Tumorigenicity 2 (sST2), and diastolic dysfunction in cirrhotic patients without known cardiac disease. We conducted a prospective case–control study including 83 participants (43 patients with non-alcoholic cirrhosis and 40 healthy controls), assessed clinically, biochemically, and echocardiographically between June 2020 and July 2021. Cirrhotic patients showed significantly higher NT-proBNP (94.17 ± 151.36 pg/mL vs. 19.2 ± 5.47 pg/mL, p < 0.001) and sST2 levels (5.4 ± 2.31 ng/mL vs. 2.4 ± 0.99 ng/mL, p < 0.001). NT-proBNP demonstrated limited diagnostic accuracy for diastolic dysfunction (accuracy 52.6%, sensitivity 50%, specificity 60%, AUC 0.51), but it correlated modestly with congestion markers such as left atrial volume and pulmonary artery systolic pressure. A multimarker model combining age, NT-proBNP, and sST2 substantially improved diagnostic performance for diastolic dysfunction (accuracy 75%, sensitivity 77.1%, specificity 71.4%, AUC 0.925). In conclusion, NT-proBNP is associated with diastolic dysfunction but is influenced by cirrhosis congestion status. A combined NT-proBNP and sST2 assessment enhances diagnostic precision and may aid therapeutic decision-making, particularly regarding congestion and diuretic management in cirrhotic patients.