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The prevalence and predictive factors of urinary tract infection in patients undergoing renal transplantation: A meta-analysis

      Highlights

      • The prevalence of urinary tract infections (UTIs), risk factors and postoperative outcomes has been long investigated but the results were controversial.
      • Our study indicated that rate of UTIs was high in kidney transplant patients. Female sex, elderly age, long duration of catheter, acute rejection episodes and cadaveric donor will increase the risk of UTIs.
      • This study is an extension of our previous work on hospital-acquired infection of different disease, such as renal transplantation, haemodialysis and acute leukemia, etc.

      Background

      Urinary tract infections (UTIs) are the main cause of infectious complications in renal transplant (RTx) recipients and are considered as a potential risk factor for poorer graft outcomes. However, the risk factors of UTIs are controversial. We estimated the incidence and predisposing factors of UTIs in patients undergoing RTx.

      Methods

      Seventeen studies (6,671 patients) evaluated the prevalence and the risk factors of UTIs in patients with RTx published January 2000-October 2014 were included. The data were pooled using the fixed effect model or DerSimonian-Laird random effect model according to I2.

      Results

      Thirteen eligible articles with a total of 3,364 patients were evaluated and the pooled prevalence of UTIs was 38.0% (95% confidence interval [CI], 29%-47%; P < .01). The estimated risk factors for UTI include female sex (odds ratio [OR], 3.11; 95% CI, 2.10-4.13), older age (OR, 1.032; 95% CI, 1.01-1.04), duration of catheter (OR, 1.52; 95% CI, 1.03-2.03), acute rejection episodes (OR, 1.64; 95% CI, 1.11-2.41), and receiving a kidney from a deceased donor (OR, 1.28; 95% CI, 1.09-1.52).

      Conclusions

      More than one-third of RTx patients had at least 1 UTI after surgery. Female sex, older age of the recipient, long duration of catheter, acute rejection episodes, and cadaveric donor were associated with higher risk of UTI.

      Key Words

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