Purple Urine Bag Syndrome

Area of Science:

• Urology
• Microbiology
• Biochemistry

Background:

• Purple urine bag syndrome (PUBS) is a rare, benign condition characterized by purple discoloration of the urinary drainage bag and tubing.
• It typically affects elderly patients with long-term urinary catheterization, linked to bacterial metabolism of tryptophan.
• The exact mechanisms and risk factors, especially in younger populations, require further elucidation.

Purpose of the Study:

• To report an unusual case of PUBS in a young male patient with prolonged urinary catheterization.
• To investigate the potential contributing factors, including bacterial species and clinical conditions.
• To describe the management and outcome of this rare phenomenon.

Main Methods:

• Case presentation of a young male experiencing purple discoloration of his urinary bag.
• Analysis of urine culture to identify causative bacteria.
• Clinical assessment for contributing factors such as catheter duration and constipation.
• Intervention included urinary catheter and tubing replacement and antibiotic therapy.

Main Results:

• The patient presented with classic purple discoloration of the urinary bag and tubing.
• Urine culture confirmed the presence of Providencia species.
• Constipation was identified as an additional risk factor.
• Following catheter replacement and antibiotic treatment, urine color normalized.

Conclusions:

• This case demonstrates that PUBS can occur in younger individuals with prolonged urinary catheterization.
• Bacterial activity, particularly Providencia, and factors like constipation play a significant role.
• Prompt management involving catheter care and antibiotics effectively resolves the condition.