Ninguna institución sanitaria lo reconoce como medicamento y advierten de sus graves efectos adversos.Whilst oxygen saturation (SpO2 ) fluctuated at roughly 95% just after intubation, arterial oxygen strain (PaO2 ) was high on arterial blood gas Assessment. We suspected methemoglobinemia depending on the gap between SpO2 and PaO2 , and subsequentl