Figure 1 Quiz of the Week An 80-year-old female with a history of diabetes and chronic constipation presents to the emergency department with a purple urine bag. She is currently bedridden and uses an indwelling catheter. On examination, she is hypotensive and confused. Blood cultures are positive for Proteus vulgaris. Image credit: @ctip. Answer: Ciprofloxacin…
Why is this urine bag purple?
