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Biopsy Core Number Is the Independent Predictor of Febrile Urinary Tract Infection after Transrectal Ultrasound Guided Prostate Biopsy 前列腺切片針數為術後尿道感染的獨立預測因子. 蔡博超 1 、姜秉均 1 、蒲永孝 1 、劉詩彬 1 、姜宜妮 1,2 、 余宏政 1 、 王碩盟 1 、 張宏江 1 、 黃昭淵 1. 1 台大醫院 泌尿部 ; 2 署立基隆醫院 泌尿科. Introduction(1).
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Biopsy Core Number Is the Independent Predictor of Febrile Urinary Tract Infection after Transrectal Ultrasound Guided Prostate Biopsy前列腺切片針數為術後尿道感染的獨立預測因子 蔡博超1、姜秉均1、蒲永孝1、劉詩彬1、姜宜妮1,2 、余宏政1 、王碩盟1 、張宏江1 、黃昭淵1 1台大醫院 泌尿部;2署立基隆醫院 泌尿科
Introduction(1) • Infection is a well-known complication of transrectal ultrasound guided prostate biopsy (TRUSP-Bx). • Wide variability in antibiotics prophylaxis has been reported. • The European Association of Urology (EAU) guidelines on prostate cancer state that “quinolones are the drug of choice in TRUSP-Bx.”
Introduction(2) • Sieber et al reported the increase of the complicated UTI after TRUSP-Bx was insignificant from sextant biopsy to 10 or 12-core biopsy in a 1000 patients cohort. Urology. 70: 498-500, 2007 • Recent literatures have demonstrated an emergence of increasing infectious complications and fluoroquinolone (FQ)-resistant infections following TRUSP-Bx. • To determine whether the biopsy core number is associated with febrile urinary tract infection (fUTI) after transrectal ultrasound guided prostate biopsy (TRUSP-Bx).
Patients and methods(1) • Retrospectively reviewed the electronic medical records of consecutive males receiving levofloxacin 500mg single dose prophylaxis in TRUSP-Bx in National Taiwan University Hospital (NTUH) between January 2005 and December 2010 • Indications for biopsy: (1) an increased PSA level and/or (2) abnormal digital rectal examination (DRE). • Exclusion:(1)a pre-existing diagnosis of prostate cancer(2)thosewho did not follow the TRUSP-Bx protocol.
Patients and methods(2) • Definition of febrile UTI : • (1) Body temperature greater than 38。C in two weeks after biopsy, • (2) New-onset lower urinary tract symptoms or acute epididymitis, • (3) Absence of other sources of infection.
Patients and methods(3) Transrectal Ultrasound Guided Prostate Biopsy Protocol in NTUH Levofloxacin 500mg single dose one hour before biopsy. Inpatient setting, sextant biopsy or ≧12-core biopsy (with/without finger-guided nodular biopsy) with general anesthesia or spinal anesthesia. Outpatient setting, only sextant biopsy in consideration of discomfort related to solely perianal-intrarectal topical lidocaine gel anesthesia. DRE before the procedure to avoid “trans-fecal” biopsy. Rectal disinfection with iodine swab.
Result • A total of 2951 TRUSP-Bx was included between January 2005 and December 2010. • The median age was 68 years (ranges 25 to 95). • The median PSA level was 9.7 ng/ml (ranges 0.1 to 7500) • 962 (32.6%) males were diagnosed as prostate cancer after biopsy. • 92 (3.1%) males’ pathology reports revealed histological prostatitis
median test (1.12%)
Multivariate study • Multivariate model with logistic regression analysis which included biopsy core number and age. • Biopsy core number (≧12core) was still the predictor of febrile UTI with p value = 0.024.
Result • 35 (1.12%) patients experienced febrile UTI after TRUSP-Bx. • 24 (68.6%) had positive urine and/or blood cultures: • E. coli in 19 (79.2%) - 16 (84.2%) FQ-resistant. • Klebsialla pneumoniae in 2 (8.3%), • Enterobacter cloacae in 1 (4.2%), • Serratia marcescens in 1 (4.2%), • Enterococcus species in 1 (4.2%).
Discussion(1) 2010 EAU guidelines on prostate cancer, the cumulative infection rate following TRUSP biopsy was 2.5%. In our study, the febrile UTI rates after TRUSP biopsy range from 0.60 to 1.75 % from 2005 to 2010. (overall 1.12%) Our results suggest that levofloxacin remains an effective prophylaxis for TRUS-guided prostate biopsy.
Discussion(2) This is the largest study for examining the efficacy of single dose levofloxacin prophylaxis in TRUSP-Bx.(A total of 2951 cases) In our study, ≥12core biopsy was the independent predictor of febrile UTI compared to sextant biopsy. Sieber et al reported increase insignificantly in the complicated UTI from sextant biopsy to 10 to 12-core biopsy in a 1000 patients cohort. Urology. 70: 498-500, 2007
Discussion(3) • Retrospective study by reviewing electronic medical records in a tertiary referral center. • Failed to evaluate all the potential risk factors of infectious complications.
Conclusion • Biopsy core number serves as the predictor of febrile UTI following TRUSP-Bx.