A Provocative Suggestion: Inhalant Equimolar O2/N2O Solution

摘要

The Nitrous Oxide is a medical gas known for over 150 years for its analgesic effects.It was discovered in 1772 by PRIESTLEY, but Humprey DAVY first realised that this gas had anaesthetic effects and defined it "Laughing Gas" for its effects on the experimenting people.In 1868 it was introduced in Dentistry in Great Britain, but the English Society declared it an asphyxiating gas: that was caused by the use still near absolute of the gas (100 % solution).In 1893 HILLISCHER invented the first -almost- exact fluxometer, but the users still believed Oxygen had not to be superior to 9 % in the inhalatory solution: so in the Thirties of XX century the Nitrous Oxide was given up because of many hypoxic deaths.In the Fifties the non hypoxic inhalatory solution N2O/O2 came in as anaesthetic agent in surgery and dentistry.