Operative surgery . o discomfort. ether narcosismay be obtained in from two to four minutes from the beginning of thegas, with entire absence of a stage of excitement. Chloroform before ether is frequently resorted to in order that thepatient may have the comfort of the more agreeable and less pungent odor of the former and to avoid themental effect often producedupon the patient by the moreformidable apparatus used inthe administration of the this plan it should not beforgotten that a large percent-age of the deaths from chloro-form have occurred during theearly part of it
Operative surgery . o discomfort. ether narcosismay be obtained in from two to four minutes from the beginning of thegas, with entire absence of a stage of excitement. Chloroform before ether is frequently resorted to in order that thepatient may have the comfort of the more agreeable and less pungent odor of the former and to avoid themental effect often producedupon the patient by the moreformidable apparatus used inthe administration of the this plan it should not beforgotten that a large percent-age of the deaths from chloro-form have occurred during theearly part of its mixtures beforeether are less dangerous andnearly as pleasant. Ethyl bro-mide and ethyl chloride beforeether produce unconsciousnessnearly as quickly as gas, butare less pleasant to inhale. The succession of gas, ether, and chloroform issuitable for those cases in which the latter agent is indicated, and in whichit is desirable to avoid the conditions noted during the stage of Fig. 20.—Bennetts gas and ether inhaler. THE GENERAL CONSIDERATIONS. 35 The condition of the respiration and circulation under nitrous oxide ren-ders the succession of gas and chloroform a dangerous procedure, and itshould not be undertaken. A change from one angesthetic to another is often advantageous duringan administration. Thus the sedative and depressing effects of chloroformare counteracted by those of the previous or subsequent administration ofether. The irritation or excessive stimulation of ether is overcome bychanging to chloroform. The administration of oxygen during anaesthesia has received muchattention, especially in conjunction with nitrous oxide, which when givenin a pure state is complicated by asphyxia resulting from deprivation ofoxygen. Oxygen has been recommended in conjunction with ether andchloroform by numerous observers, and while it is probable that oxygenis not an antidote to these agents, and will not prevent their fatal effectswhen
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