File:Anæsthesia and anæsthetics general and local (1903) (14780423864).jpg

Identifier: ansthesiaansthe00pat (find matches)
Title: Anæsthesia and anæsthetics general and local
Year: 1903 (1900s)
Authors: Patton, Joseph M(cIntyre), 1866- (from old catalog)
Subjects:
Publisher: Chicago, Cleveland press
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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unctival reflex is usually absent, while thecorneal reflex is retained except in protracted anaesthesia. An-aesthesia is evidenced by regular breathing, slightly snoring incharacter; by relaxation of the arms; by loss of conjunctival re-flex, and by fixed eyeballs. In administering nitrous oxide and oxygen the patient shouldbe in a sitting position, with the head in line with the body andnot extended. If the recumbent position is necessary, as in gen-eral surgery, the lateral position is probably the best, and a flatcouch or operating table should be used. The same preliminary NITROUS OXIDE 89 attention should be given to apparatus and patient as in the useof gas alone. Special attention should be given to the fit of theface-piece, as it is even more important in using both agentsthat the face-piece should fit closely than it is in using gas alone.(Figs. 20-23.) When the patient is breathing air freely the gas, with a smallpercentage of oxygen, is turned on. If too much oxygen is used
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Fig. 20.—Goldans Stop Cock. Figs. 20. 21, 22. The gas stop-cock (Fig. 20-I) contains two valves.The inspiratory valve is set in an inner cylindrical tube, which works by ahandle through a right-angled slit in an external cylinder supporting theexpiratory valve superiorly, and inferiorly giving attachment to the gas-bag for gas alone, or the inverted Y-shaped tube for gas and oxygen.The valves themselves are made of thin sheet hard rubber, and are there-fore indestructible. When the handle is turned down to the point indi-cated by air (see Fig. 1 diagrammatic plate, Fig. 21) the gas-bag is closedby means of the obturating function of the inner tube; when the handle isturned upward to the place indicated by gas air is excluded and gas isinhaled by means of the inspiratory valve. Expirations of the patient passout through the expiratory valve; at the same time the inspiratory valve isclosed. When the handle is pushed backward to the place indicated by novalves the valves are thrown out

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