title: Purple urine bag syndrome.
abstract: Purple urine bag syndrome is a rare disorder where the plastic urinary catheter bag and tubing turn purple. The discolouration is due to the presence of indigo and indirubin pigments which are metabolites of tryptophan. It is associated with urinary tract infection. Bacteria that produce sulphatase and phosphatase are involved in the formation of these pigments. Purple urine bag syndrome is associated with higher morbidity and mortality, compared to urinary tract infection without this phenomenon. We present a case report of this rare phenomenon occurring in a 68-year-old woman.
authors.affiliation: Department of Medicine, Raja Isteri Pengiran Anak Saleha Hospital, Bandar Seri Begawan, BA 1710, Brunei Darussalam.
authors.forename: B P
authors.initials: BP
authors.lastname: Pillai
authors.forename: V H
authors.initials: VH
authors.lastname: Chong
authors.forename: A M
authors.initials: AM
authors.lastname: Yong
mesh_terms: D000368:Aged; D018687:Antidepressive Agents, Second-Generation / Q000378:metabolism*; D004927:Escherichia coli Infections / Q000201:enzymology* / Q000382:microbiology; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007203:Indigo Carmine; D007211:Indoles; D014364:Tryptophan / Q000378:metabolism*; D014546:Urinary Catheterization / Q000009:adverse effects; D014552:Urinary Tract Infections / Q000201:enzymology* / Q000382:microbiology
chemical_list: D018687:Antidepressive Agents, Second-Generation; D007211:Indoles; D014364:Tryptophan; D007203:Indigo Carmine; C027185:indirubin