Treatment of Providencia stuartii Urinary Tract Infections

Antimicrobial Selection

• Ciprofloxacin should only be used empirically if local resistance rates are <10% 1
• Consider third-generation cephalosporins (intravenous) as empirical treatment for complicated UTI with systemic symptoms 1
• Aminoglycosides combined with amoxicillin or second-generation cephalosporins can be used for complicated UTI 1

Critical Clinical Context

• Catheter removal or replacement is essential, as antibiotic therapy alone cannot clear biofilm on indwelling catheters and will only suppress symptoms temporarily 2
• Relapse is highly likely if the catheter remains in place after treatment completion 2

Treatment Duration

• 7-14 days is the recommended duration for complicated UTI 1
• Use 14 days for men when prostatitis cannot be excluded 1
• Shorter 7-day courses may be considered when the patient is hemodynamically stable and afebrile for at least 48 hours 1

Important Caveats

• Always obtain urine culture and susceptibility testing before finalizing antibiotic selection 1, 3
• Distinguish true infection from colonization before initiating antimicrobial therapy 4
• Asymptomatic bacteriuria should not be treated except before urological procedures breaching the mucosa 3, 5
• Look for systemic symptoms: fever, rigors, altered mental status, flank pain, costovertebral angle tenderness, or signs of sepsis 1

Clinical Significance of Providencia stuartii Infections

Infection Sites and Transmission

• The urinary tract is the primary site of colonization and infection, often associated with catheter-associated urinary tract infections, according to the Infectious Diseases Society of America 6

Antimicrobial Resistance and Clinical Significance

• The American College of Clinical Pharmacy recommends ciprofloxacin for susceptible strains, especially in urinary tract infections, and piperacillin-tazobactam for polymicrobial infections, with a strength of evidence based on clinical guidelines 7