Study: NCT05898269

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.

Intervention type: DIAGNOSTIC_TEST
Group type: EXPERIMENTAL
Intervention: Fluid bolus (reference diagnostic method)
Description: After the 4 tests, the patient will receive a 500-ml fluid bolus of crystalloids in less than 15 minutes.~Evaluator (reference method): cardiac index measured by transpulmonary thermodilution before and immediately after the fluid bolus. Patients with a relative change in cardiac index \> 15% will be identified as being fluid responders, and the others as non-responders.