Lectures on general anaesthetics in dentistry, advocating painless dental operations by the use of nitrous oxid, nitrous oxid and oxygen, chloroform, ether, ethyl chloride and somnoform . d gas. The manufacturers have taken advantageof this discovery and have learned how to condensenitrous oxid. This is done under immense pressureat a low temperature, and, in order to confine the gasin this state, heavy steel cylinders are used. Cylin- warnis the gas before entering the air passages. The ana?sthetistholds the mask to the face, sets the oxygen and nitrous oxid per-centage valves for whatever mi
Lectures on general anaesthetics in dentistry, advocating painless dental operations by the use of nitrous oxid, nitrous oxid and oxygen, chloroform, ether, ethyl chloride and somnoform . d gas. The manufacturers have taken advantageof this discovery and have learned how to condensenitrous oxid. This is done under immense pressureat a low temperature, and, in order to confine the gasin this state, heavy steel cylinders are used. Cylin- warnis the gas before entering the air passages. The ana?sthetistholds the mask to the face, sets the oxygen and nitrous oxid per-centage valves for whatever mixture of these gases he desires,determines the volume of tidal respiration and sets the adjustablerebreathing bag for whatever portion he wants the patient torebreathe, if any. He then watches his patient for the sympjtomswhich will indicate whether the mixture is correct or not andmakes such corrections as are necessary. A beginner who isfamiliar with the properties of this anaesthetic and who is thor-oughly acquainted with other anaesthetics, will often give a suc-cessful gas-oxygen anKsthesia of an hour for major surgery onthe first trial. 114 General Anccsthctics in A € 1^^4 CXVGCN 1 - AN X-EAY VIEW OF THE MKESSON APPARATUS PROPER, SHOWING THE CONSTRUCTION IN DETAIL. 1. Automatic self-filling bags. 2. Square gas channels with valves which actually representthe percentage of each gas used. 3. Both NjO and O check valves are mounted on the sameshaft so that the oxygen cannot stick, but opens witheach inhalation, resulting in a smooth anaesthesia. 4. A separate, adjustable, graduated bag for rebreathing,which measures the tidal respiration in cubic centimeters (asource of valuable information) and permits of instantaneousadjustment for any amount of rebreathing to be performed auto-matically and uniformly. If desired the gas from the Bronchiatree only, amounting to 140 e. c, which contains no CO,, maybe stored at each exhalation, to be rebreathed at the ne
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1912
