[Bacteriological correlation of urinary stones and preoperative urine culture: Is there a significant impact on postoperative infectious risk? (Moroccan experience)]

Prog Urol. 2021 Feb;31(2):78-84. doi: 10.1016/j.purol.2020.05.013. Epub 2020 Jul 7.
[Article in French]

Abstract

Aim: The objectives of this study were to evaluate the impact of preoperative urine culture and the infected nature of stones on the occurrence of postoperative urinary sepsis.

Material and methods: A prospective monocentric study included 29 patients operated on for urolithiasis between January and June 2018.

Results: Postoperative urinary sepsis was observed in 4 patients (14%). Urinary colonization rate on preoperative CBU exam was 27.6% (8 of 29) while the rate of colonized stones was 31% (9 of 29). The occurrence of urinary sepsis was observed in 37.5% (3 of 8) of patients with urinary colonization, compared to 44.4% of patients with colonized stones (4 of 9). By comparing the bacteriological results observed during sepsis, the germs isolated in postoperative urine were the same found in the culture of stones. The chemical nature of the colonized stones was mainly calcium oxalate (monohydrate, dihydrate) P=0.02. There was a statistically significant correlation between the preoperative urine culture, the bacteriological culture of stones and the postoperative urinary sepsis (P=0.05, P=0.005) respectively.

Conclusion: Our study demonstrated a strong association between the bacteriological culture of stones and postoperative urinary sepsis superior to preoperative urine culture. It makes it possible to anticipate the occurrence of sepsis in patients requiring many endoscopic treatments. However, several multicentric prospective series may prove necessary to validate these results.

Level of evidence: 3.

Keywords: Bacteriological correlation; Calculs urinaires; Corrélation bactériologique; ECBU; Infectious risk; Risque infectieux; Urinary stones; Urine exam.

MeSH terms

  • Adult
  • Bacteria / isolation & purification*
  • Correlation of Data
  • Female
  • Humans
  • Male
  • Middle Aged
  • Morocco
  • Postoperative Complications / epidemiology*
  • Postoperative Complications / microbiology*
  • Preoperative Period
  • Prospective Studies
  • Risk Assessment
  • Sepsis / epidemiology*
  • Urinary Calculi / microbiology*
  • Urinary Calculi / surgery*
  • Urinary Calculi / urine
  • Urinary Tract Infections / epidemiology*
  • Urine / microbiology
  • Urolithiasis / microbiology
  • Urolithiasis / surgery
  • Urolithiasis / urine