Traffic light urine
Unusual Urine 007 from @KateTietjens. 15 min post methylene blue = traffic light urine!
Tag Methylene blue
Why so blue?
A 40-year-old man presented to the emergency department with shortness of breath, chest pain and reported a pre-syncopal episode. But why so blue?
Methylene blue
Methylene Blue is the treatment of choice for symptomatic drug-induced methaemoglobinaemia (signs of hypoxia with chest pain, dyspnoea or confusion) or consider in asymptomatic patients with methaemoglobin (MetHb) levels >20%.
Methylene Blue
CLASS MECHANISM OF ACTION (1) low concentrations: methylene blue -> NADPH-dependent reduction to leucomethylene blue (due to action of methaemoglobin reductase) -> reduces methaemoglobin -> Hb(2) high concentrations: methylene blue -> converts ferrous iron of reduced Hb to ferric ion…