Purple urine bag syndrome
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urinary tract infections

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Villarraga Márquez NJ, Franco Pineda SM, Guarín Loaiza GM, Bastidas SJ, Castillo Mercado JS. Purple urine bag syndrome: Síndrome de la bolsa de orina púrpura. Rev. Colomb. Nefrol. [Internet]. 2020 Nov. 20 [cited 2022 May 18];8(1):e496. Available from: https://revistanefrologia.org/index.php/rcn/article/view/496


Purple urine bag syndrome is a rare clinical condition, of unknown prevalence, with few reports published in our country that presents exclusively in catheterized patients with multiple risk factors, such as chronic kidney disease, neurological pathologies, residents of nursing homes and affects more females than males. The purple discoloration of urine is generated by indoxyl-sulfate degradation to indigo and indirubin lead by phosphatases/sulphatases enzymes produced by specific bacteria, associated to an alkaline urine environment, those two pigments combine which turns to purple discoloration appreciated in the urinary bag and catheter. The present case report is about a 75-year-old male, which appears with a classic clinical presentation. This case report has the objective, for health care workers, to remember the importance of basic care of urinary catheters, understand the underlying physiopathology and in consequence improve patient care.

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