Prognostic Assessment of Diastolic and Systolic Left Ventricular Function in Septic Shock

Inclusion Criteria: * Patient hospitalized in ICU for septic shock: * Documented or highly suspected infection (clinically or microbiologically) * Causing an organ failure defined as an acute change in total SOFA score ≥ 2 points (baseline SOFA score can be assumed to be zero in the absence of pre-existing organ dysfunction) * And low blood pressure (sBP \< 90 mmHg or a decrease of more than 40 mmHg compared to baseline, or mBP \< 65 mmHg) despite a fluid loading of 30 mL/kg (except if clinical or radiological sign of pulmonary fluid overload) requiring vasopressor infusion to maintain mBP \> 65 mmHg * And lactate level \> 2 mmol/L * Patient older than 18 years old affiliated to the French Social Security * Non-opposition of the patient (or of its next-of-kin) to participate in the study Exclusion Criteria: * Ongoing dobutamine or epinephrine infusion * Severe left valvular disease (severe stenosis, severe regurgitation ≥ grade 3) * Constrictive pericarditis (invalidate the mitral tissue Doppler imaging) * Pregnant women * Patient with estimated life expectancy \< 24h.