This study aimed to analyze factors affecting the outcome of cardiac operations. A number of variables can affect the autcome of cardiac surgical procedures. The success of a cardiac operation is determined by the successful execution of appropiate management. Cardiac dysfunction during the postoperative period after cardiac surgery is a frequent disorders, causing a more prolonged hospital stay, increasing risk of death and larger costs...We studied the incidence of the different dysfunction of the cardiac rhythm, the involved pathophysiological mechanisms, and the management employed