Operative surgery . of ether administered can be increased or di-minished during the operation. The smallamount of ether con-sumed renders thisinhaler very econom-ical for hospital andfield service. Onnshi/s Inhaler(Fig. 14). — Orms-bys inhaler is the simplest device for givingether by the close method. It is not a regulat-ing inhaler, such as Clovers, and is, therefore,inferior to the latter for the induction of nar-cosis, but is considered preferable for continuingthe administration, being smaller, and having anair tap for regulating the air supply. The amount of ether required to produce in
Operative surgery . of ether administered can be increased or di-minished during the operation. The smallamount of ether con-sumed renders thisinhaler very econom-ical for hospital andfield service. Onnshi/s Inhaler(Fig. 14). — Orms-bys inhaler is the simplest device for givingether by the close method. It is not a regulat-ing inhaler, such as Clovers, and is, therefore,inferior to the latter for the induction of nar-cosis, but is considered preferable for continuingthe administration, being smaller, and having anair tap for regulating the air supply. The amount of ether required to produce in-sensibility depends upon several conditions, themost important of. Fig. 13.—Clovers inhaler. which are the suscep-tibility of the patient, the manner of adminis-tering, and the purity of the anesthetic. Somepersons can be completely anaesthetized by anounce, and even less; on the other hand, oneoccasionally meets with those who take etherbadly, and can not be rendered quiet unlessan unusual amount be given; rarely, indeed,a case is encountered wliich apparently willnot yield to its influence, and the surgeon isforced to desist in the interest of the patientssafety. It is not prudent to predicate in ad-vance the definite amount of ether that willbe required, except possibly in some peculiarcases. AuEesthesia is never to be attempted un-less the surgeon is certain he has a sufficientquantity of the anaesthetic to complete theoperation, for nothing can be more humiliat-ing than to be obliged to discontinue an oper-ation for the purpose of procuring an addi-tional amount. It is not wise to begin an operation that requires muchtime and care unless at le
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