Cardiovascular Parameters Associated With Troponin I as Indicators for 14-Day Mortality in Patients With Septic Shock

Area of Science:

• Cardiology
• Intensive Care Medicine
• Biomarkers

Background:

• Troponin I is a key biomarker for cardiocyte damage and sepsis mortality.
• Hemodynamic factors may interact with cardiac function, influencing sepsis outcomes.
• Investigating these interactions is crucial for understanding sepsis pathophysiology.

Purpose of the Study:

• To investigate the interaction between cardiac function and hemodynamic parameters in sepsis.
• To determine the combined effect of cardiac function index (CFI) and other hemodynamic factors on mortality.
• To assess the role of Troponin I in predicting mortality in the context of sepsis and altered hemodynamics.

Main Methods:

• Patients with Troponin I tests and Sequential Organ Failure Assessment score ≥2 were analyzed.
• Pulse-induced contour cardiac output (PiCCO) parameters, including CFI and stroke volume variation (SVV), were measured.
• Patients were stratified into groups based on CFI, SVV, and mortality to identify interactions.

Main Results:

• High Troponin I levels correlated with increased mortality and low cardiac function (CFI < 4.5).
• Low CFI combined with high SVV (SVV > 10) was specifically associated with increased mortality.
• No significant correlation was found between Troponin I and global end-diastolic index (GEDI) or systemic vascular resistance index.

Conclusions:

• Interactions between cardiac and hemodynamic factors contribute to cardiocyte damage in sepsis.
• Evaluating multiple factors, such as low CFI and high SVV, is essential for accurate assessment of cardiocyte damage and mortality risk.
• This study highlights the importance of a multifactorial approach in managing sepsis patients.