Occurrence and significance of fluoroquinolone-resistant and ESBL-producing Escherichia coli and Klebsiella pneumoniae complex of the rectal flora in Ghanaian patients undergoing prostate biopsy
Abstract
BACKGROUND: Reports suggest that fluoroquinolone (FQ)-resistant and ESBL-producing rectal flora are associated with infectious complications in men undergoing transrectal ultrasound-guided prostate needle biopsy (TRUS-B).
OBJECTIVES: We investigated the relationship between carriage of FQ-resistant and ESBL-producing Escherichia coli and Klebsiella pneumoniae complex of the rectal flora, and the 30 day incidence rate of post-TRUS-B infectious complications.
METHODS: From 1 January 2018 to 30 April 2019, rectal swabs of 361 patients were cultured pre-TRUS-B for FQ-resistant and ESBL-producing flora. Patients were followed up for 30 days for infectious complications post-biopsy. Multivariable logistic regression analyses were used to identify risk factors.
RESULTS: Overall, 86.4% (n = 312/361) and 62.6% (n = 226/361) of patients carried FQ-resistant and ESBL-producing E. coli and K. pneumoniae complex, respectively. Approximately 60% (n = 289/483) of the FQ-resistant and 66.0% (n = 202/306) of the ESBL-positive isolates exhibited in vitro resistance to the pre-biopsy prophylactic antibiotic regimen of levofloxacin and gentamicin. Amikacin and meropenem were the most effective antibiotics against the MDR rectal E. coli and K. pneumoniae complex (78.7% and 84.3%, respectively). The 30 day incidence rate for post-biopsy infections was 3.1% (n = 11/361), with an overall high probability (96.9%) of staying free of infections within the 30 day period post-TRUS-B. Antibiotic use in…
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