Postoperative Critical Care of the Adult Cardiac Surgical Patient.  Part I: Routine Postoperative Care. 
Cardiac surgery, including coronary artery bypass, cardiac valve, and aortic procedures, is among the most common surgical procedures performed in the United States.  Successful outcomes after cardiac surgery depend on optimum postoperative critical care.  The cardiac intensivist must have a comprehensive understanding of cardiopulmonary physiology and the sequelae of cardiopulmonary bypass.  In this concise review, targeted at intensivists and surgeons, we discuss the routine management of the postoperative cardiac surgical patient.  Narrative review of relevant English-language peer-reviewed medical literature.  Critical care of the cardiac surgical patient is a complex and dynamic endeavor.  Adequate fluid resuscitation, appropriate inotropic support, attention to rewarming, and ventilator management are key components.  Patient safety is enhanced by experienced personnel, a structured handover between the operating room and ICU teams, and appropriate transfusion strategies.