The art of anaesthesia . pend upon theuse of morphine, the preparation of the patient, the natureof the operation, the amount of ether used, and the degreeto which rebreathing is carried. Hysteria—use suggestion, and morphine combinedwith hyoscine. Hiccough—rare in nitrous oxide oxygen anaesthesia;increase gas and rebreathing. Headache during recovery—uneven anaesthesia withtoo much rebreathing. Corneal reflex gone—usually deep anaesthesia. Nvstagmus and active corneal-lid reflex—shallowanaesthesia. Hearing is acute during the early stages of nitrousoxide oxygen anaesthesia—be quiet. 230 ANEST
The art of anaesthesia . pend upon theuse of morphine, the preparation of the patient, the natureof the operation, the amount of ether used, and the degreeto which rebreathing is carried. Hysteria—use suggestion, and morphine combinedwith hyoscine. Hiccough—rare in nitrous oxide oxygen anaesthesia;increase gas and rebreathing. Headache during recovery—uneven anaesthesia withtoo much rebreathing. Corneal reflex gone—usually deep anaesthesia. Nvstagmus and active corneal-lid reflex—shallowanaesthesia. Hearing is acute during the early stages of nitrousoxide oxygen anaesthesia—be quiet. 230 ANESTHESIA The Administration of Gas Oxygen Ether Anaes-thesia by the Method of Constant Flow withRebreathing A constant flow of gases with limited rebreathing isemployed by A. H. Miller, of Providence, whose appara-tus (Fig. 105), represents a popular type. This apparatus is very ingenious, and simple in thework which it is expected to perform. The control issomewhat more ready and its employment does not require. FlQ. 104.—Face-piece and controlling valves. Fig. —Face-piece, controlling valves, reducing valves and gas cvlinders. (CourtesyDr. Miller.) so much mechanical sense on the part of the operator, asdoes the use of the intermittent flow. The Nitrous Oxide Oxygen Apparatus devised by H. Miller provides for a definite flow of nitrousoxide and of oxygen, each measured in litres per minute,to which may be added a definite flow of vaporized ether,measured in per minute. Two reducing valves, one for nitrous oxide, and onefor oxygen, are provided (Fig. 105). Each reducing valve is mounted on a double cylinders of each gas, clamped into their yokes, seton the floor, not requiring any other support. The reduc-ing valves provide a supply of nitrous oxide and of oxygen NITROUS OXIDE OXYGEN ETHER ANAESTHESIA 231 at a constant pressure of 10 pounds to the square reducing valves are connected with the controllingvalves by rubber tubing
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanesthe, bookyear1919
