Fluid REsponsiveness and Arterial ELASTANCE in Patients With Septic Shock or After Aortic Surgery

Inclusion Criteria

• •Age at least 18 years
• •Septic shock (according to Sepsis-3 definition) or patients who underwent elective or emergent abdominal aortic surgery
• •Invasive blood pressure (radial or femoral) and Mostcare monitoring
• •Stroke volume between 20 and 50 mL/beat on the Mostcare system
• •Indication for a fluid challenge: hypotension (Mean arterial pressure under 65mmHg) or oliguria (urine flow rate \< 0,5mL/kg/h for more than 12h), mottling, hyperlactatemia \> 2 mmol/l