Evaluation of the Variation of the Sub-pulmonary Velocity-time Integral to Predict Fluid Responsiveness

Exclusion Criteria

• •Severe left ventricular dysfunction defined by left ventricular ejection fraction (LVEF) \< 30%.
• •Severe right ventricular dysfunction defined by TAPSE \< 12 mm.
• •Cardiac arrhythmia or atrial fibrillation.
• •Abdominal compartment syndrome.
• •Amputation of one or both lower limbs.
• •Intracranial hypertension.
• •Pregnant women (ruled out by systematic pregnancy test at ICU admission).
• •Minors.