title: Purple Urine Bag Syndrome.
abstract: Purple urine bag syndrome (PUBS) is a rare disorder seen in elderly persons, wherein the urinary bag and the tubing turn in to purple colour. It is usually seen in patients who are on urinary catheters for a long time. Purple coloured urine occurs due to the accumulation of indigo and indirubin, which are the end products of tryptophan metabolism due to the action of sulfatases and phosphatases formed by bacteria like Providencia, Citrobacter, Enterobacter, Klebsiella etc. We present this interesting phenomenon of purple urine in a young male who was on prolonged urinary catheterization. The urine culture was positive for Providencia and constipation was an added risk factor for the purple urine. The urinary catheter and tubing was changed along with a course of antibiotics which lead to the normalization of the urine colour.
authors.affiliation: Assistant Professor, Department of General Medicine, Saveetha Medical College and Hospital, Saveetha University , Saveetha Nagar, Thandalam, Chennai, Tamil Nadu, India .
authors.forename: Naufal Rizwan Taraganar
authors.initials: NR
authors.lastname: Abubacker
authors.affiliation: Assistant Professor, Department of General Medicine, Saveetha Medical College and Hospital, Saveetha University , Saveetha Nagar, Thandalam, Chennai, Tamil Nadu, India .
authors.forename: Senthil Manikandan Thirumanilayur
authors.initials: SM
authors.lastname: Jayaraman
authors.affiliation: Associate Professor, Department of General Medicine, Saveetha Medical College and Hospital, Saveetha University , Saveetha Nagar, Thandalam, Chennai, Tamil Nadu, India .
authors.forename: Kannan
authors.initials: K
authors.lastname: R
authors.affiliation: Professor, Department of General Medicine, Saveetha Medical College and Hospital, Saveetha University , Saveetha Nagar, Tamil Nadu, Chennai, Tamil Nadu, India .
authors.forename: Magesh Kumar
authors.initials: MK
authors.lastname: Sivanesan
authors.affiliation: Professor, Department of Microbiology, Saveetha Medical College and Hospital, Saveetha University , Saveetha Nagar, Thandalam, Chennai, Tamil Nadu, India .
authors.forename: Renu
authors.initials: R
authors.lastname: Mathew
keywords: Indigo; Indirubin; Pink purple urine; Providencia; Tryptophan