To explore the characteristics of pathogenic bacteria and risk factors of postoperative infection in patients with open hand injuries, so as to provide reference basis for infection prevention and control in patients with open hand injuries.

From January 2018 to December 2020, 1 526 patients with open hand injuries treated in the department of hand surgery of our hospital were retrospectively collected. According to whether there was infection, they were divided into infection group (86 cases) and control group (1 440 cases). The types and distribution of pathogenic bacteria in the infection group were analyzed. The general data, anesthesia, surgery and other related indicators of the two groups were collected. The related risk factors of open hand injury infection were screened by one-way ANOVA and multivariate Logistic regression analysis.

The postoperative infection rate of open hand injuries was 5.64%. The pathogenic bacteria were mostly Gram-negative bacteria (60.47%), and the infection strains were mainly Pseudomonas aeruginosa (17.44%), Staphylococcus aureus (15.12%) and Escherichia coli (13.95%). The results of One-way ANOVA and multivariate Logistic regression analysis showed that age (above 60 years), smoking history, diabetes mellitus, injury to operation time (more than 6 hours), wound contamination and vacuum sealing drainage were the 6 independent factors influencing postoperative infection of open hand injuries, and vacuum sealing drainage was the protective factor.

There is still a certain postoperative infection rate after open hand injuries, and there are many kinds of pathogenic bacteria and risk factors leading to infection. For patients with large age, smoking history, diabetes mellitus, long injury to operation time, and wound contamination, we should pay attention to the reference value of these factors, and make targeted prevention and control so as to reduce the infection rate of open hand injuries.

Hand injuries; Infection; Pathogenic bacteria; Risk factor