In postoperative cardiac patients, the incidence of conduction disturbances is between 1 to 4% depending on the complexity of the surgical procedure, the intraoperatory complications and the need for reintervention. These disorders lead to the need for electrical support, transient or permanent by a pacemaker. So far, there are few data in the literature regarding the potential factors related to the need for a pacemaker in postoperative cardiac surgery.