We try to demonstrate the reduction of infection of the surgical site with the preventive use of negative pressure dressing in colorectal surgery.

Case-control study with 40 patients in each group. Both groups, baseline without differences. Test t-student was used for the comparison of means in variables of normal distribution, while the Wilcoxon test was used for the comparison of means of non-normal distribution. The multivariate analysis was used in the study of risk factors.

The wound infection is reduced with the use of negative pressure dressing from 25% to 7.5% p: 0.034 OR (0.006-0.964). The hospital stay is reduced from 12 to 8 days with the use of these dressings p: 0.22

The data have shown a significant reduction in the reduction of wound infection with the use of negative pressure dressings in a preventive manner in colorectal surgery