1. Deep wound infection: lay open of the wound was mandatory |
2. Intra-abdominal abscess: confirmed by laparotomy or percutaneous drainage |
3. Anastomotic leak: confirmed by intraluminal contrast studies and/or laparotomy |
4. Re-bleeding or significant wound haematoma |
5. Pneumonia: confirmed by chest X-ray and/or mucus cultures |
6. Thrombosis and/or pulmonary emboli: confirmed by either venography, duplex sonography and computed tomography scan |
7. Pressure ulcer (grade II, III and IV were scored) |
8. Urinary tract: infections confirmed by urine cultures |
9. Cardiac (acute coronary syndromes, decompensated heart disease, arrhythmias): confirmed by electrocardiography and/or CK/CKMB studies or by chest X-ray |
10. Ischemic or hemorrhagic stroke: confirmed by computed tomography scan |
11. Sepsis (SIRS caused by an infection) |
12. Miscellaneous |
13. Multiple organ failure (altered organ function in an acutely ill patient such that homeostasis cannot be maintained without intervention) |