case_images: PMC11806928_01
case_images: Venous blood sample with chocolate brown color appearance from a patient with poppers-induced methemoglobinemia
case_images: cureus-0017-00000077190-i01.jpg
case_images: PMC11806928_01_cureus-0017-00000077190-i01.jpg
case_images: FIG1
case_images: The patient's venous blood sample was noted to have a chocolate-brown appearance (Figure 1).
case_images: Initial electrocardiogram of a patient with poppers-induced methemoglobinemia showing sinus tachycardia with rate of 104 bpm, and ST-segment elevations in leads AvR and AvL with ST-segment depressions in leads II, III, avF, and V3-V6
case_images: cureus-0017-00000077190-i02.jpg
case_images: PMC11806928_01_cureus-0017-00000077190-i02.jpg
case_images: FIG2
case_images: Chest X-ray of a patient with poppers-induced methemoglobinemia after intubation showed no acute abnormality
case_images: cureus-0017-00000077190-i03.jpg
case_images: PMC11806928_01_cureus-0017-00000077190-i03.jpg
case_images: FIG3
case_images: Chest X-ray after intubation showed no acute abnormality (Figure 3).
case_images: A non-contrast computed tomography (CT) of the head of a patient with poppers-induced methemoglobinemia showed no acute intracranial abnormality
case_images: cureus-0017-00000077190-i04.jpg
case_images: PMC11806928_01_cureus-0017-00000077190-i04.jpg
case_images: FIG4
case_images: Electrocardiogram of a patient with poppers-induced methemoglobinemia drastically improved after administration of methylene blue, with resolution of ST changes
case_images: cureus-0017-00000077190-i05.jpg
case_images: PMC11806928_01_cureus-0017-00000077190-i05.jpg
case_images: FIG5
case_images: ECG drastically improved with the resolution of ST changes (Figure 5).