Urinary Tract Infection, Complicated (UTI)

Michael Melia, M.D., James DeMaio, M.D.

Urinary Tract Infection, Complicated (UTI) is a topic covered in the Johns Hopkins ABX Guide.

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PATHOGENS

Among the most common, resistant strains frequently encountered:
- Enterobacteriaceae
- Pseudomonas aeruginosa
- Acinetobacterspp.
Less common:
- MSSA or MRSA
  - Most due to invasion of urinary tract (secondary to catheters, stents)
  - Consider presentations of staphylococcal bacteremia with findings of S. aureus in urine.
- Enterococcus spp. (including VRE)
- Candida spp.
- Fastidious organisms possible.
Infections may be polymicrobial, especially if chronic urinary catheter or stents are present.

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PATHOGENS

Among the most common, resistant strains frequently encountered:
- Enterobacteriaceae
- Pseudomonas aeruginosa
- Acinetobacterspp.
Less common:
- MSSA or MRSA
  - Most due to invasion of urinary tract (secondary to catheters, stents)
  - Consider presentations of staphylococcal bacteremia with findings of S. aureus in urine.
- Enterococcus spp. (including VRE)
- Candida spp.
- Fastidious organisms possible.
Infections may be polymicrobial, especially if chronic urinary catheter or stents are present.

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