Abstract
On this study limiting to gastrointestinal tract surgery, the relationships between postoperative infections and each factor such as age, type of disease, operative stress, prophylactic antibiotics, serum total protein value, serum albumin value and Iymphocyte counts were examined.
1) The outbreak incidence of postoperative infections in patients with cancer was higher than in those without cancer.
2) There was no significant difference between incidence of infections and kind of prophylactic antibiotics used.
3) With an aging, the incidence of infections increased in patients with benign diseases such as gastroduodenal ulcer and cholelithiais.
4) With an increase in the degree of oparative stress, a higher incidence of infections was observed in patients with malignant diseases such as gastric and colorectal cancers.
5) Postoperative infectious patients showed lowered serum total protein and albumin values before surgery. In addition, these values remarkably decreased in aged patients postoperatively, and their recoveries were delayed.
6) Lowered lymphocyte counts from preoperative period were often found in aged or cancer patients. A significant decrease in this parameter was observed in postoperative infectious patients.
