Investigations into the Pathogenic Bacterial Infection of Wounds and Its Analysis

OBJECTIVE. This paper investigates the pathogenic bacterial infection status of wound, and evaluates the effects and effectual time of silver dressings on different pathogens, in order to provide scientific guidance for the clinical treatment of wounds. METHODS. Researchers chose 165 chronic wound patients who were in our hospital from August 2015 to September 2016. Retrospective survey was made on the basic information of all these patients. After debridement, silver dressings were applied to their wounds. The results of intervention were analyzed retrospectively. RESULTS. Before the intervention, the positive rate of pathogenic bacteria was 78.18% in 165 samples, and the positive rate of drug resistance bacteria was 71.52%. 9 kinds of pathogenic bacteria were found, among which staphylococcus aureus and pseudomonas aeruginosa accounted for the largest proportion. After 1 week, 2 weeks and 4 weeks of intervention, pathogen positive rates of all patients greatly declined, and the differences were statistically significant (P < 0.05). Escherichia coli and staphylococcus aureus decreased most significantly. After statistical analyses, the differences of patients' wound areas and pain scores before and after the intervention were significantly different (P < 0.05). CONCLUSIONS. Through the investigation and analysis of common pathogenic bacteria in wounds, it has been found that high positive rate of pathogens can impact the healing of wounds. Meanwhile, silver dressing has different antibacterial effects on different bacteria. So it should be applied to wounds continuously. When applying silver dressings, medical persons should take comprehensive factors, like the types of patients' wounds and bacterial species into consideration. The scientific and rational usage of silver dressing can reduce infection rates and improve patients' health qualities.