CHRONIC METHEMOGLOBINEMIA - IMPROVING HEMOGLOBIN SATURATION MONITORING DURING ANESTHESIA

Methemoglobin interferes with the accuracy of pulse oximetry data. Met hemoglobinemia is caused by many factors, both congenital and acquired . However, the increasing usage of dapsone, which converts hemoglobin to methemoglobin, is increasing the number of patients with methemoglo binemia. We present the case of a patient with dapsone-induced methemo globinemia who was successfully treated with methylene blue, which con verts methemoglobin back to hemoglobin.