The purpose of this study is to present a simple Delivery System of Blood Cardioplegia for myocardial preservation during congenital cardiac operation. We prospectively analysed 71 patients (pts) with 10/12 kg of body mean weight, 34 were female and mean age was 2/1 years. From the arterial line, passing through a mini heat exchanger, blood at 8 C is aspirated to a 50 cc syringe, which is conected to a 10 cc syringe with a KCL + decimal solución using 2 stopcocks. The mixture originates a cold blood with 15 mEq/l of KCL + that is infused into the aortic root, according to the pts weight (10 cc/kg). In all pts cardiac arrest was obtained. The mean extracorporeal circulation time and crossclamping was 87.2 and 60.7 min. All pts recovered sinus rhythm with good ventricular function. Thirteen patients died, 6 with respiratory failure, 3 with low cardiac output, 2 with dysrhythmias, 1 with renal failure and 1 with hematologic disorder; the other 58 patients left the hospital with no complications. In conclusion, this method showed good results with efficient myocardial preservation and low morbi-mortality
Cardioplegia; Cardioplegia; Myocardial protection