The Role of Dexmedetomidine As Myocardial Protection In Pediatric Cyanotic Congenital Heart Disease Undergoing Open Cardiac Surgery Using Cardiopulmonary Bypass Machine: A Preliminary Study

50 ml of Ringer acetate will be added to the priming solution and followed by a continuous 50 ml infusion of Ringer acetate running at 25 ml/hour.

1 mcg/kg diluted DEX will be added to the priming solution and followed by a continuous infusion of 50 ml Ringer acetate running at 25 ml/hour.

0.5 mcg/kg DEX will be added to the priming solution and followed by a continuous infusion of 0.25 mcg/kg/hour DEX diluted in 50 ml of ringer acetate running at 25 ml/hour.