HAN Zhi-hong,WEN Cun-ning,PANG Shuo,et al.Pathogenic bacteria and local antibiotic treatment of deep surgical site infection after posterior lumbar fusion and internal fixation[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2023,32(11):1017-1020.
HAN Zhi-hong,WEN Cun-ning,PANG Shuo,et al.Pathogenic bacteria and local antibiotic treatment of deep surgical site infection after posterior lumbar fusion and internal fixation[J].JOURNAL OF REGIONAL ANATOMY AND OPERATIVE SURGERY,2023,32(11):1017-1020. DOI: 10.11659/jjssx.11E022032.
Pathogenic bacteria and local antibiotic treatment of deep surgical site infection after posterior lumbar fusion and internal fixation
To investigate the distribution characteristics of pathogenic bacteria in early deep surgical site infection after posterior lumbar fusion and internal fixation and the effect of local antibiotic treatment.
Methods
2
A total of 60 patients with early infection after posterior lumbar fusion and internal fixation in our hospital from May 2020 to May 2022 were prospectively selected. The secretions of the infected site of patients were collected for bacterial culture, and the distribution characteristic of pathogenic bacteria and the drug resistance of main pathogenic bacteria were analyzed. The patients were randomly divided into the control group and the observation group. The observation group (30 cases) was treated with debridement combined with antibiotics local continuous perfusion and drainage, while the control group (30 cases)was treated with debridement combined with perfusion of equal amount of normal saline.The treatment effects of the two groups were compared.
Results
2
A total of 90 strains of pathogenic bacteria were detected in 60 samples, including 30 strains (33.33%)of Gram-positive bacteria, of which Staphylococcus aureus was the main pathogenic bacteria (20.00%); there were 56 strains (62.22%) of Gram-negative bacteria, of which Pseudomonas aeruginosa was the main pathogenic bacteria (28.89%); 4 strains (4.44%) of fungi. Among gram-negative bacteria
Pseudomonas aeruginosa was highly resistant to gentamicin
ciprofloxacin and ampicillin
Escherichia coli was highly resistant to cefazolin
and Klebsiella pneumoniae was highly resistant to gentamicin. Among gram-positive bacteria
Staphylococcus aureus was highly resistant to ampicillin and penicillin
Staphylococcus epidermidis was highly resistant to vancomycin
and Coagulase-negative staphylococcus was highly resistant to ampicillin and erythromycin. After treatment, the VAS score and ODI of patients in the two groups decreased significantly(
P
<
0.05), and the body temperature, WBC, CRP, PCT and ESR were significantly improved (
P
<
0.05), and the improvements in the observation group were better than those in the control group. Compared with the control group, the perfusion drainage time, drainage tube placement time, intravenous antibiotic use time and hospitalization time of patients in the observation group were significantly shortened (
P
<
0.05); but there was no significant difference in the wound healing time between the two groups (
P
>
0.05).
Conclusion
2
Staphylococcus aureus and Pseudomonas aeruginosa are the main pathogenic bacteria in early deep surgical site infection after posterior lumbar fusion and internal fixation, and debridement combined with antibiotics local continuous perfusion and drainage have a reliable effect on infection.
关键词
腰椎后路融合内固定术切口感染病原菌耐药性抗菌药物清创
Keywords
posterior lumbar fusion and internal fixationsurgical site infectionpathogenic bacteriadrug resistanceantibioticsdebridement
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