Association between Left Ventricular Systolic Dysfunction and Mortality in Patients with Septic Shock

Area of Science:

• Cardiology
• Critical Care Medicine
• Echocardiography

Background:

• Myocardial damage impact on septic shock prognosis is unclear due to complex hemodynamics.
• Evaluating left ventricular (LV) conditions independent of hemodynamic changes is crucial.
• This study assesses LV conditions reflecting myocardial damage and their prognostic value in septic shock.

Purpose of the Study:

• To evaluate left ventricular (LV) conditions that indicate myocardial damage in septic shock.
• To determine the influence of these LV conditions on patient prognosis.
• To assess the predictive value of echocardiography in septic shock.

Main Methods:

• Retrospective analysis of 208 adult ICU patients with septic shock.
• Echocardiography performed within 7 days of septic shock diagnosis.
• Exclusion of patients with pre-existing structural or coronary artery disease.
• Categorization of left ventricular ejection fraction (LVEF) and LV wall motion patterns.

Main Results:

• Severe LV systolic dysfunction (LVEF < 30%) was associated with higher in-hospital mortality (HR, 1.97).
• Diffuse pattern of LV wall motion impairment also significantly increased mortality risk (HR, 2.28).
• Normal LVEF was observed in 141 patients; diffuse and ballooning patterns were most common among those with impaired motion.

Conclusions:

• Severe LV systolic dysfunction and diffuse LV wall motion impairment are significant predictors of in-hospital mortality in septic shock.
• Conventional echocardiography provides valuable information on myocardial damage.
• Echocardiographic findings accurately predict septic shock patient prognosis.