Antibiotic Prophylaxis for Cystoscopy with Stone Retrieval

Introduction to Prophylaxis

• The American Urological Association recommends antimicrobial prophylaxis for cystoscopy with stone manipulation or retrieval, consisting of a single dose of either oral fluoroquinolone or trimethoprim-sulfamethoxazole administered 1-2 hours before the procedure 1, 2, 3

First-Line Antibiotic Options

• The European Association of Urology suggests ciprofloxacin 500 mg as a single oral dose for prophylaxis 1, 3
• The American Urological Association recommends levofloxacin 500 mg as a single oral dose for prophylaxis 1, 3
• Trimethoprim-sulfamethoxazole 160/800 mg is a cost-effective alternative with efficacy similar to fluoroquinolones 1, 3

Alternative Agents When Fluoroquinolones Cannot Be Used

• First-generation or second-generation cephalosporins, such as cefazolin 1 g IV or cefuroxime 500 mg oral, can be used as alternative agents 1
• Aminopenicillin with beta-lactamase inhibitor, such as ampicillin-sulbactam 1.5-3 g IV or amoxicillin-clavulanate 875 mg oral, can be used as alternative agents 1

Critical Timing and Administration

• The American Urological Association recommends administering oral antibiotics 1-2 hours before the procedure to ensure adequate tissue levels at the time of instrumentation 1, 4
• The European Association of Urology suggests administering IV antibiotics within 60 minutes before the procedure, ideally at induction if using anesthesia 2
• Single-dose prophylaxis is sufficient, and extended courses are not indicated and violate antimicrobial stewardship principles 1, 2, 3

Special Circumstances Requiring Modified Approach

• If purulent urine is encountered during cystoscopy, the procedure should be aborted, and broad-spectrum antibiotics should be continued pending culture results 2
• In cases of pre-existing bacteriuria, antibiotic selection should be based on prior urine culture results and local antibiogram patterns when available 1, 2

Common Pitfalls to Avoid

• Prophylaxis should not be skipped for "simple" stone retrieval, as any stone manipulation increases bacteremia risk and requires prophylaxis 1, 4
• Fluoroquinolones should not be used indiscriminately, and local resistance patterns and recent patient antibiotic exposure should be checked 4
• Antibiotics should not be continued beyond 24 hours post-procedure unless treating an established infection rather than providing prophylaxis 1, 3