Cardiac surgery requires :
1° On the same site, echocardiography, transthoracic echography, transoesophageal echography and digital angiography equipment, usable and accessible at all times for the cardiac surgery activity;
2° A medical biology analysis laboratory capable of carrying out the tests required for cardiac surgery, either located on the same site or linked by agreement; test results, particularly those relating to haemostasis and blood gases, must be accessible within a timeframe compatible with a life-threatening emergency;
3° Labile blood products, including in emergencies, 24 hours a day, every day of the year. These products are delivered within a timeframe compatible with the life-threatening emergency.