title: Oxygen needle valve obstruction.
authors: M G
authors: MG
authors: Beudoin
mesh_terms: D000776:Anesthesiology / Q000295:instrumentation*; D004868:Equipment Failure; D006801:Humans; D010100:Oxygen / Q000008:administration & dosage*; D011229:Preanesthetic Medication
chemical_list: D010100:Oxygen