Anaesthesia e anestesia generale e locale . come e spegnere la valvola del cilindro.Vedere che le valvole nell'inalatore funzionino correttamente. Se thepatient ha una barba, inumidire i capelli attorno alla bocca beforeapplying facciale. Spiegare al paziente che esiste nodanger o sofferenza connessi con la somministrazione di gas.e mostrargli come respirare profondamente e regolarmente attraverso themouth. Applicare il facciale e vedere che non si adatta correttamente byhaving il paziente respire aria in e fuori attraverso le valvole essere-fore accendendo il gas (Fig. 17), spiegando nel frattempo a thepatient che egli è simpl

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Anæsthesia and anæsthetics general and local . as and shut off the cylinder valve.See that the valves in the inhaler are working properly. If thepatient has a beard, moisten the hair about the mouth beforeapplying the face-piece. Explain to the patient that there is nodanger or suffering connected with the administration of gas.and show him how to breathe deeply and regularly through themouth. Apply the face-piece and see that it fits properly byhaving the patient respire air in and out through the valves be-fore turning on the gas (Fig. 17), explaining meanwhile to thepatient that he is simply breathing air. The regular sound of NITROUS OXIDE 79 the valves will show that the face-piece fits properly (Fig. 18).The pneumatic face-piece is probably the most easily adjustedand satisfactory. If the face-piece fits properly and the patient is breathingfreely the gas should be turned on. The bag at this time shouldbe about two-thirds full, and should be kept nearly full through-out the administration by allowing a small amount of gas to. Fig. 17.—Inhaler No. 3. (White Dent. Co.) Fig. 17. The sectional view shows the internal construction. An open-ing, B, underneath the body of the Inhaler admits the gas through a similaropening, A, in a sliding tube GG, fitting inside of and projecting beyond therear portion of the main body. The projecting portion is perforated forthe admission of air, and its outer end is closed by a cap. At the inner endof the sliding tube is a coil spring EE, abutting against a shoulder in thebody of the Inhaler. This spring holds the sliding tube in the positionshown in the cuts, closing the inlet B when the gas is not being used.Pressure on the cap compresses the spring, closes the perforations for theadmission of air, and brings the opening A over B, affording a free flowof gas to the mouth-piece through the inhaling valve. The sliding tube isprevented from rotating by the screw-pin D, which works in a slot, C. Theinhaling and exhaling valves

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• bookcentury1900
• bookdecade1900
• bookpublisherchica
• bookyear1903