Letter: Gas embolism during pneumoencephalography.
D000293:Adolescent; D006328:Cardiac Catheterization / Q000009:adverse effects; D004618:Embolism, Air / Q000209:etiology*; D006801:Humans; D008297:Male; D009609:Nitrous Oxide / Q000009:adverse effects; D011011:Pneumoencephalography / Q000009:adverse effects*
D009609:Nitrous Oxide