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The primary purpose of this study is to investigate wether the measure of stroke volume (SV) variations by impedance cardiography during passive leg raising (PLR) can reliably predict preload dependency after cardiac surgery, in comparison to a reference parameter : velocity time integral (VTI) variation measured by transthoracical echocardiography.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 1 |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Impedance cardiography Physioflow ® | Device |
|
| Measure | Description | Time Frame |
|---|---|---|
| Area under ROC curve comparing SV variation (impedance cardiography) and VTI variation after PLR | Patients classified as responders and non responders to PLR : VTI variation ≥ 12% or < 12% | Within the 6 first hours after cardiac surgery |
| Measure | Description | Time Frame |
|---|---|---|
| Variation of central veinous pressure, left auricular pressure and left ventricular filling pressures after PLR (ROC curves, correlation tests) | Within the 6 first hours after cardiac surgery | |
| Respiratory variation of inferior vena cava | Within the 6 first hours after cardiac surgery |
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Inclusion Criteria:
Exclusion Criteria:
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Patients requiring cardiac surgery
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| Name | Affiliation | Role |
|---|---|---|
| Nassim HESHMATI, MD | Hôpitaux Universitaires de Strasbourg | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Service d'Anesthésiologie, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg | Strasbourg | 67091 | France |
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