Norepinephrine Infusion During Cardiopulmonary Bypass

Patients undergoing different cardiac surgical procedures will receive a continuous intravenous infusion of Normal Saline 0.9% with a starting dose of 0.0025 ml/kg/min.

Patients undergoing different cardiac surgical procedures will receive a continuous intravenous infusion of norepinephrine (40 ug/ml) with a starting dose of 0.0025 ml/kg/min.

Infusion rate will be increased as needed in order to maintain a MAP ≥65 mmHg during cardiopulmonary bypass period as per the discretion of the anesthesiologist using 0.00125 ml/kg/min increments

Infusion rate will be decreased as needed in order to maintain a MAP ≥65 mmHg during cardiopulmonary bypass period as per the discretion of the anesthesiologist using 0.00125 ml/kg/min decrements