The patient’s blood pressure was brought back down to normal levels; however, she was complaining of a **burning sensation** in her throat and mouth followed by **nausea** and **vomiting**, **diaphoresis**, **agitation**, and **dyspnea**. The nurse noticed a sweet **almond smell** in her breath. An arterial blood gas revealed a significant **metabolic acidosis**. A serum test suggests a metabolite of **nitroprusside**, **thiocyanate**, is at toxic levels.
1. What is the likely cause of her symptoms?
2. What is the biochemical mechanism of this problem?
3. What is the treatment for this condition?