Phase angle determined by bioelectrical impedance analysis is a strong prognostic factor in several medical areas as clinical nutrition, nephrology, infectious disease, oncology. Inflammation, frailty status and fluid overload can lead to a phase angle decreased. Some studies support its use for risk stratification in intensive care unit and other in preoperative for cardiac surgery. The investigators would like to evaluate its relevance for risk stratification at intensive care unit admission in the context of postoperative cardiac surgery with cardiopulmonary bypass.

Inclusion Criteria:

• Age higher than 18
• Cardiac surgery with cardiopulmonary bypass
• Bioelectrical impedance analysis the day of the admission in intensive care unit

Exclusion Criteria:

• Left ventricular assist device
• Limitations des thérapeutiques actives en place pour le patient
• Patient opposition to the use of his health data
• Invalid bioelectrical impedance analysis
• Advanced directives to withhold or withdraw life-sustaining treatment

Adults patients admitted in intensive care unit for postoperative care after cardiac surgery with cardiopulmonary bypass.