case_images: PMC11126755_01
case_images: chocolate-brown colour of the patient's blood in the sterile field after placing a femoral central venous catheter due to methemoglobinemia
case_images: PAMJ-47-92-g001.jpg
case_images: PMC11126755_01_PAMJ-47-92-g001.jpg
case_images: F1
case_images: The patient s blood colour was abnormally muddy brown (Figure 1) associated with dark orange urine.