Characterization of Endothelial Dysfunction as a Function of Hyperaemia of the Brachial Artery During Cardiac Surgery

The glycocalyx is a layer of proteins and complex sugars covering the endothelium of vessels. Its role as capillary filtration control is important. In case of alteration of the glycocalyx, experimental models and some clinical studies show an increased capillary leak responsible for interstitial edema. The analysis of glycocalyx in routine care is important to guide volume expansion. Indeed, the literature provides evidence about the poor prognosis of excess water and its impact on organ. This analysis challenge is to justify filling solution of choice according to the characteristic of this capillary leakage.

Inclusion Criteria: * cardiac surgery Exclusion Criteria: * auricular fibrillation * endocarditis * aortic dissection * end stage chronic renal disease