for the group of patients , we considered age , sex , hospital environment ( different locations of our surgical facilities over the years ) , interval between hospital admission and operation , antibiotic prophylaxis , type of surgical procedure , elective or emergency surgical procedure , reoperation , duration of surgical procedures , duration of cardiopulmonary bypass , amount of blood transfused , postoperative blood loss , chest reexploration , rewiring of a sterile sternal dehiscence , duration of mechanical ventilation , and days of treatment in the intensive care unit .
C0817096
chest
C0038293
sternal