It is illegal and unethical to use nitrous oxide/ oxygen conscious sedation without scavenging.
Gillman
Mark
M
D000397:Air Pollution / Q000517:prevention & control; D000766:Anesthesia, Dental / Q000941:ethics / Q000379:methods / Q000592:standards*; D018685:Anesthetics, Inhalation / Q000633:toxicity*; D016292:Procedural Sedation / Q000592:standards*; D005260:Female; D015920:Gas Scavengers / Q000941:ethics / Q000592:standards* / Q000706:statistics & numerical data; D015386:Hazardous Substances / Q000633:toxicity; D006801:Humans; D009609:Nitrous Oxide / Q000008:administration & dosage / Q000633:toxicity*; D016273:Occupational Exposure / Q000331:legislation & jurisprudence / Q000517:prevention & control; D010100:Oxygen / Q000008:administration & dosage
D018685:Anesthetics, Inhalation; D015386:Hazardous Substances; D009609:Nitrous Oxide; D010100:Oxygen