Analysis of miRNAs Expression in Vasoplegic Syndrome After On-pump Coronary Artery Bypass Surgery

"In all included patients, 3 milliliters of venous blood will be collected before cardiopulmonary bypass, 3 milliliters of venous blood 15 minutes after the reversal of heparin with protamine and a small fragment of aortic tissue. Samples of biological material will be compared between the control and vasoplegic groups for the difference in amount and type of miRNA present.~For the diagnosis of vasospastic syndrome, the following criteria were adopted: mean arterial pressure \< 65 mmHg, cardiac index \< 2.2 L / min / m2, refractory to replacement of at least 1000 milliliters of crystalloid, excluding other causes such as tamponade, bleeding and cardiogenic shock"