Describe the proportion of patients who underwent cardiac surgery in France and benefiting from a monitoring cardiac output, describe the use of positive inotropic and vasoactive agents for cardiac surgery patients operated (type of catecholamines, their duration), describe the fluid replacement and transfusions of first 24 hours, describe the incidence of postoperative complications in patients undergoing cardiac surgery.

The perioperative management in cardiac surgery patients has changed dramatically in the last fifteen years with the development of new cardiac output monitoring devices, the availability of new inotropic molecules, and a modern treatment for cardio-circulatory failure.

However, few studies report the possible changes in practice. The last French national survey was conducted in 2001. Since then, the literature is poor on the subject, and the impact of new approaches has been only marginally addressed. Recently, a German postal survey was conducted among cardiac surgery anesthesiologists, but on purely declarative elements and without patient data.

The investigators offer a type of national prospective observational study to evaluate professional practices, morbidity and mortality in cardiac surgical patients. This study must include all patients undergoing cardiac surgery at the participating centers during 7 weeks.

The main objective of this work is to assess the proportion of patients undergoing cardiac surgery receiving a cardiac output monitoring.

Secondary objectives are to describe the relationship between the use of cardiac output monitoring and the use of positive inotropic agents and vasoactive (type molecules, duration), volume expansion and transfusions the first 24 hours, and the incidence postoperative complications for patients undergoing cardiac surgery.

Inclusion Criteria:

• Patients over 18 years old undergoing cardiac surgery during the study period

Non-inclusion Criteria:

• age under 18 years old
• Extracorporeal life support and others cardiac assistance
• congenital cardiac surgery
• TAVI procedures
• Pericardium surgical drainages
• Sternal sepsis surgery

Patients receiving elective cardiac surgery during the study period