Preoperative Bladder Urine Culture as a Predictor of Intraoperative Stone Culture Results: Clinical Implications and Relationship to Stone Composition

Jessica E Paonessa, Ehud Gnessin, Naeem Bhojani, James C Williams, James E Lingeman

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

PURPOSE: We examine the relationship between urine and stone cultures in a large cohort of patients undergoing percutaneous stone removal and compare the findings in infectious vs metabolic calculi.

MATERIALS AND METHODS: A total of 776 patients treated with percutaneous nephrolithotomy who had preoperative urine cultures and intraoperative stone cultures were included in the study. Statistical analysis used chi-square or logistic fit analysis as appropriate.

RESULTS: Preoperative urine culture was positive in 352 patients (45.4%) and stone cultures were positive in 300 patients (38.7%). There were 75 patients (9.7%) with negative preoperative cultures who had positive stone cultures, and in patients with both cultures positive the organisms differed in 103 (13.3%). Gram-positive organisms predominated in preoperative urine and stone cultures.

CONCLUSIONS: Preoperative urine cultures in patients undergoing percutaneous nephrolithotomy are unreliable as there is a discordance with intraoperative stone cultures in almost a quarter of cases. There has been a notable shift toward gram-positive organisms in this cohort of patients.

Original languageEnglish
JournalJournal of Urology
Volume196
Issue number3
Pages (from-to)769-774
ISSN0022-5347
DOIs
Publication statusPublished - 2016
Externally publishedYes

Keywords

  • Journal Article

Fingerprint

Dive into the research topics of 'Preoperative Bladder Urine Culture as a Predictor of Intraoperative Stone Culture Results: Clinical Implications and Relationship to Stone Composition'. Together they form a unique fingerprint.

Cite this