Correlation Between Echocardiographic and Hemodynamic Variables in Cardiothoracic Intensive Care Unit

Area of Science:

• Cardiology
• Critical Care Medicine
• Echocardiography

Background:

• Echocardiographic indices require validation in critically ill populations.
• Hemodynamic monitoring is crucial for managing severe circulatory and respiratory failure.

Purpose of the Study:

• To investigate the correlation between echocardiographic indices and hemodynamic parameters in critically ill patients.
• To determine the reliability of echocardiographic measures for assessing ventricular function in this population.

Main Methods:

• A prospective, observational study was conducted in an adult cardiothoracic intensive care unit.
• 117 critically ill patients with severe respiratory or cardiocirculatory failure, or post-aortic surgery, were included.
• Echocardiographic indices (t-IVT, MAPSE, LVEF) and hemodynamic parameters (SV, CO, MAP, CPI) were evaluated.

Main Results:

• t-IVT showed inverse correlations with SV, CO, MAP, and CPI (r -67% to -51%).
• MAPSE demonstrated positive correlations with SV, CO, MAP, and CPI (r 31% to 44%).
• LVEF did not correlate with hemodynamic parameters; t-IVT and MAPSE showed reproducible associations.

Conclusions:

• MAPSE and t-IVT are reproducible and reliable echocardiographic indices for assessing systolic function and ventricular efficacy in cardiothoracic critically ill patients.
• These indices are associated with key hemodynamic variables.
• LVEF was not found to be a reliable correlate of hemodynamic status in this cohort.