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The first of these points on anesthesia has to do with the use of ethyl chlorid prior to the administration of ether. Since the safety of this very pleasant method has been demonstrated it has rapidly grown in popularity. Dr. V. C. Pedersen, anesthetist to Roosevelt Hospital, has informed me that, unless otherwise directed by the surgeon, this is now always his preference instead of beginning the anesthesia with liquid laughing-gas.
Six months ago a certain New York firm informed me that hereafter they intended to manufacture their own ethyl chlorid instead of importing it; and, through their representative, asked my advice as to the best size of tube to supply. After som experimenting I advised a 5 c.c. tube. This is drawn to a fine point at one end, easily broken off and sealed by a blowpipe flame.
I also recommend the following method of usage: Assuming that the
DAWBARN RHM. FOUR POINTS OF INTEREST IN MAJOR ANESTHESIA. JAMA. 1906;XLVI(16):1161–1162. doi:10.1001/jama.1906.62510430011001d
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