Comparison of Two Dosages of Heparin Before Extracorporeal Circulation

Comparison of Two Dosages of Heparin Before Extracorporeal Circulation

In this study the investigators will study two dosages of heparin before extracorporeal circulation in open chest cardiac surgery.

In this study the investigators will study two dosages of heparin before extracorporeal circulation in open chest cardiac surgery. The first dosage will be 300 IU per kilogram of REAL weight, the second dosage will be 300 IU per kilogram of IDEAL weight.

Inclusion Criteria:

• All patients admitted for cardiac open chest surgery

Exclusion Criteria:

• Patient's refusal
• Antithrombin III factor < 75%
• Patient under treatment by heparin IV