Soluble ST2 as a Biomarker for Predicting Right Ventricular Dysfunction in Acute Pulmonary Embolism.

Area of Science:

• Cardiology
• Pulmonology
• Biomarker Research

Background:

• Soluble ST2 (sST2), an IL-1 superfamily member, is a biomarker for inflammatory responses and cardiovascular diseases.
• Elevated sST2 levels indicate cardiac stress and have prognostic value in conditions like heart failure and acute pulmonary embolism (APE).

Purpose of the Study:

• To evaluate sST2 as a biomarker for right heart dysfunction in APE patients.
• To assess the predictive value of sST2 for mortality and risk stratification in APE.

Main Methods:

• Patients with CTPA-confirmed APE were enrolled.
• Exclusion criteria targeted conditions known to elevate sST2 to ensure specificity for APE.
• sST2 levels were measured and correlated with APE and right ventricular function.

Main Results:

• 66 APE patients and 62 healthy controls were included.
• sST2 levels were significantly elevated in APE patients compared to controls.
• sST2 levels positively correlated with the presence of APE and were associated with right ventricular dysfunction.

Conclusions:

• sST2 demonstrates high sensitivity for detecting APE.
• Elevated sST2 in APE is associated with right ventricular dysfunction.
• sST2 does not independently predict mortality or risk stratification using PESI scores in APE.