Anæsthesia and anæsthetics general and local . stop-cockis recommended by Hewitt. The gas bag holds two gallons and isreplaced by the ordinary bag of the Clover inhaler when anaes-thesia is induced. The ether may be placed in the inhaler afterthe patient is insensible to its odor, and the transition from gasto ether is gradually made by opening the ether indicator slowly. SEQUENCE OF ANAESTHETICS 173 The gas bag may be filled in another room, and the patient neednot see it. The noise of gas escaping from a cylinder is patient should be fully anaesthetized before ether is admit-ted
Anæsthesia and anæsthetics general and local . stop-cockis recommended by Hewitt. The gas bag holds two gallons and isreplaced by the ordinary bag of the Clover inhaler when anaes-thesia is induced. The ether may be placed in the inhaler afterthe patient is insensible to its odor, and the transition from gasto ether is gradually made by opening the ether indicator slowly. SEQUENCE OF ANAESTHETICS 173 The gas bag may be filled in another room, and the patient neednot see it. The noise of gas escaping from a cylinder is patient should be fully anaesthetized before ether is admit-ted or there will be holding of the breath, spasm of the masseters,and struggling or excitement. When stertor is present a breathor two of air may be given. THE CHLOROFORM-ETHER SEQUENCE. This method has been considerably employed because the agree-able odor of chloroform adapts it for use as an initial agent, andbecause no special apparatus is necessary for administration. Theobjection is raised that a large proportion of chloroform fatalities. Fig. 52.—Hewitts Modification of Clovers Inhaler, for N20 and Ether. Fig. 52. Hewetts modification of Clovers inhaler was designed for thesuccessive administration of nitrous oxide gas and ether. It has the fol-lowing modifications from Clovers: (1) The air-way is much larger; (2)The central tube rotates within the fixed reservoir; (3) The face-piece isscrewed into the ether reservoir so that the latter cannot be unexpectedlydetached from the former; (4) The ether reservoir can be adjusted,with thepatient in any position, so that ether may be poured into it without remov-ing the inhaler from the patients face. There are two separate inner tubeswhich are made to revolve as one tube by the indicating handle which fitsinto each. 174 SEQUENCE OF ANESTHETICS occur during the initial stage of its administration, and thereforethe risk is practically as great as when chloroform is used for theentire period of anaesthesia. It is not necessary,
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