# Management of Pseudomonas Urinary Tract Infections (UTIs) in the Context of Extensive Antibiotic Anaphylaxis: A Case-Based Perspective

## TL;DR

This case report describes a patient with severe antibiotic allergies successfully treated for a Pseudomonas UTI using aztreonam.

## Contribution

The paper presents aztreonam as a viable treatment option for Pseudomonas UTIs in patients with extensive antibiotic allergies.

## Key findings

- Aztreonam effectively resolved symptoms in a patient with Pseudomonas UTI and multiple antibiotic allergies.
- Individualized antibiotic oversight is crucial for managing infections in patients with complex allergy histories.
- Pseudomonas UTIs can be treated successfully with IV aztreonam when other options are unavailable.

## Abstract

This case report discusses a 56-year-old African American woman with a history of recurrent urinary tract infections (UTIs) and repeated anaphylactic reactions to multiple antibiotics. She presented with dysuria and foul-smelling urine but denied fever or catheter use. Notably, she had a recent hospitalization for methicillin-resistant Staphylococcus aureus (MRSA) skin infection of the scalp. Physical examination revealed right costovertebral angle (CVA) tenderness. Urine dipstick showed positive nitrites and large leukocyte esterase. Culture identified Pseudomonas aeruginosa (P. aeruginosa), sensitive to several intravenous antibiotics, including aztreonam. Due to her extensive antibiotic allergies, she was referred to the emergency department, where she received IV aztreonam with resolution of her symptoms. This case highlights the clinical challenge of managing Pseudomonas UTIs in patients with limited antibiotic options and underscores aztreonam as a valuable therapeutic alternative in such settings. It also emphasizes the importance of individualized antibiotic oversight in patients with complex allergies.