Discolored ureteral stents: Findings in urinalysis and urine culture

Takashi Kawahara, Hiroshi Miyamoto, Hiroki Ito, Hideyuki Terao, Hiroji Uemura, Yoshinobu Kubota, Junichi Matsuzaki

Research output: Contribution to journalArticle

Abstract

Objective: Discolored ureteral stents are sometimes encountered in daily clinical practice; however, the mechanism(s) underlying the development of discolored ureteral stents remain unknown. In this study, we retrospectively analyzed the characteristics of discolored ureteral stents based on the results of a urinalysis and urine culture. Materials & Methods: We identified a total of 26 patients with discolored ureteral stents and compared the findings in the urinalyses and urine culture in 21 discolored versus 45 non-colored ureteral stents. Results: The median and mean (±SD) duration of stenting time was 78.0 and 81.3 (± 21.3) days for the discolored ureteral stents and 69.0 and 74.9 (± 19.8) days for the non-colored ureteral stents, respectively (P = 0.25). The discolored ureteral stents were associated with a higher mean urine pH than the non-colored ureteral stents (mean: 6.4 vs 6.0, P<0.05). There were no significant differences between the two groups in the RBC (P = 0.51) and WBC (P = 0.35) counts in the urinalyses. In addition, the rate of a positive culture in the patients with discolored stents [20 of 21 (95.2%)] was significantly (P

Original languageEnglish (US)
Article numbere0122984
JournalPLoS One
Volume10
Issue number4
DOIs
StatePublished - Apr 7 2015

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Stents
Urinalysis
urinalysis
urine
Urine
duration
methodology

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Kawahara, T., Miyamoto, H., Ito, H., Terao, H., Uemura, H., Kubota, Y., & Matsuzaki, J. (2015). Discolored ureteral stents: Findings in urinalysis and urine culture. PLoS One, 10(4), [e0122984]. https://doi.org/10.1371/journal.pone.0122984

Discolored ureteral stents : Findings in urinalysis and urine culture. / Kawahara, Takashi; Miyamoto, Hiroshi; Ito, Hiroki; Terao, Hideyuki; Uemura, Hiroji; Kubota, Yoshinobu; Matsuzaki, Junichi.

In: PLoS One, Vol. 10, No. 4, e0122984, 07.04.2015.

Research output: Contribution to journalArticle

Kawahara, T, Miyamoto, H, Ito, H, Terao, H, Uemura, H, Kubota, Y & Matsuzaki, J 2015, 'Discolored ureteral stents: Findings in urinalysis and urine culture', PLoS One, vol. 10, no. 4, e0122984. https://doi.org/10.1371/journal.pone.0122984
Kawahara T, Miyamoto H, Ito H, Terao H, Uemura H, Kubota Y et al. Discolored ureteral stents: Findings in urinalysis and urine culture. PLoS One. 2015 Apr 7;10(4). e0122984. https://doi.org/10.1371/journal.pone.0122984
Kawahara, Takashi ; Miyamoto, Hiroshi ; Ito, Hiroki ; Terao, Hideyuki ; Uemura, Hiroji ; Kubota, Yoshinobu ; Matsuzaki, Junichi. / Discolored ureteral stents : Findings in urinalysis and urine culture. In: PLoS One. 2015 ; Vol. 10, No. 4.
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