Snapshot A 25-year-old woman is brought to the emergency room by her boyfriend after being found unconscious in her car in the garage while it was turned on. He reports that he is unsure but less than an hour had passed since he saw her in their kitchen. He denies any knowledge of suicidal ideation on her part. Her pulse oximetry is normal. Upon evaluation by the emergency medicine physician, she regains consciousness and reports a slight headache. She appears confused initially. After administration of 100% oxygen, she is alert and oriented to person, place, and time, and reports feeling better. Introduction Clinical definition login to view 1 more bullet Epidemiology login to view 13 more bullets Pathogenesis login to view 6 more bullets Associated conditions login to view 1 more bullet Prognosis login to view 2 more bullets Presentation Symptoms login to view 4 more bullets Physical exam login to view 7 more bullets Studies Pulse oximetry login to view 1 more bullet Labs login to view 11 more bullets Making the diagnosis login to view 2 more bullets Differential Cyanide poisoning login to view 3 more bullets Treatment Management approach login to view 2 more bullets Medical login to view 13 more bullets Complications Myocarditis Acute respiratory distress syndrome