The goal of this observational study is to assess in situ vascular function, glycocalyx and microcirculation in postoperative vasoplegic shock following cardiac surgery with cardiopulmonary bypass. The main question is to investigate the relationship between NO-dependent vasomotor reserve and the presence of vasoplegic shock following cardiac surgery with cardiopulmonary bypass. Participants will have two visits, during which a number of non-invasive examinations will be carried out to study glycocalyx, microcirculation and vascular function. Biological and morphological data will be collected up to 3 months after inclusion, as well as information on treatments administered and outcome. Researchers will compare a group of patients with vasoplegic shock against a group without vasoplegic shock in order to study possible alterations in function in the vasoplegic shock group.
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Association between the percentage of brachial artery variation measured by the flow-mediated vasodilation method and the presence of vasoplegic shock at incusion.
Timeframe: At inclusion