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Chinese Journal of Experimental and Clinical Infectious Diseases(Electronic Edition) ›› 2024, Vol. 18 ›› Issue (04): 229-236. doi: 10.3877/cma.j.issn.1674-1358.2024.04.006

• Research Articles • Previous Articles     Next Articles

Distribution and influencing factors of urinary tract infection during intermittent catheterization in patients with spinal cord injury and neurogenic bladder

Dan Yuan1,(), Xiao Zhong1, Mingsong Wang1, Kang Jia1   

  1. 1.Department of Urology, 363rd Hospital, Chengdu 610041, China
  • Received:2024-02-02 Online:2024-08-08 Published:2024-11-01
  • Contact: Dan Yuan

Abstract:

Objective

To investigate the distribution and influencing factors of urinary tract infection during intermittent catheterization (IC) in patients with spinal cord injury neurogenic bladder (SCI-NB).

Methods

Total of 76 patients with SCI-NB admitted to 363rd Hospital from May 2021 to June 2023 were collected. The status of urinary tract infection and the distribution of pathogens during IC were analyzed. The influencing factors of urinary tract infection during IC of patients with SCI-NB were analyzed, and a risk assessment scale for urinary tract infection during IC of patients with SCI-NB was established.

Results

The incidence of urinary tract infection during IC period of patients with SCI-NB was 46.05% (35/76). Total of 55 strains of pathogenic bacteria were detected in urine samples from infected patients, including 70.91%(39/55) strains of Gram negative bacteria, 21.82% (12/55) strains of Gram positive bacteria, and 7.27% (4/55)strains of fungi. Logistic regression analysis combined with random forest algorithm showed that age ≥50 years old (OR = 5.075, 95%CI: 5.067-5.575, P = 0.003), frequency of intermittent catheterization ≥ 3 times/day(OR = 3.278, 95%CI: 2.915-3.306, P = 0.017), disease course ≥ 6 months (OR = 7.629, 95%CI: 7.047-7.922,P = 0.006), antibacterial drugs used > 2 kinds (OR = 3.529, 95%CI: 2.908-3.741, P = 0.010), PCT ≥ 2.07 μg/L(OR = 35.489, 95%CI: 35.201-36.105, P < 0.001), CRP ≥ 14.98 mg/L (OR = 46.216, 95%CI: 45.458-46.340,P < 0.001), IL-6 ≥ 12.72 ng/L (OR = 39.137, 95%CI: 38.865-39.671, P < 0.001) and TNF-α ≥ 126.43 μg/L(OR = 23.356, 95%CI: 22.294-22.472, P < 0.001) were all independent risk factors of urinary tract infection during IC of patients with SCI-NB. The scores in the risk assessment scale were 0.80, 0.58, 1.00, 0.62, 1.76,1.89, 1.80 and 1.55, respectively. The sensitivity of the risk assessment scale was 78.90%, the specificity was 71.70%, the predictive value of infection was 85.29%, and the predictive value of non-infection was 87.50%.

Conclusions

The main distribution of pathogenic bacteria for urinary tract infection of patients with SCINB during IC period are Escherichia coli, Enterococcus and Klebsiella pneumoniae. Clinically, the relevant factors causing urinary tract infection should be focused on, nursing supervision of patients with SCI-NB during IC period should be strengthened, and corresponding interventions were taken to prevent urinary tract infections.

Key words: Spinal cord injury neurogenic bladder, Intermittent catheterization, Urinary tract infection, Pathogenic bacteria, Related factor

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