Smoking, obesity, hypertension, duration of diabetes, family history of coronary artery disease, pre-operative myocardial infarction, and pre-operative haemodynamic data were recorded. During the surgical procedure, haemodynamic parameters, including heart rate, mean arterial pressure, central venous pressure, arterial blood gasses and urine output were monitored. In the postoperative period in the ICU, cardiovascular and respiratory values and temperature were recorded every 15 minutes before extubation and then hourly until discharge from the ICU. The length of stay in the ICU was also recorded.