Modern surgery, general and operative . ined by the ether. It was formerly taught that nitrous oxid necessarily produces cyanosis, be-cause the gas can only cause anesthesia by partially asphyxiating the know this is untrue, because if nitrous oxid is mixed with oxygen or atmo-spheric air anesthesia is obtained without cyanosis. Nitrous oxid is a genuineanesthetic agent. If a prolonged administration of nitrous oxid is desired, purenitrous oxid can be given, a breath of fresh air being allowed, from time to this method Preston has anesthetized many patients, the duration of
Modern surgery, general and operative . ined by the ether. It was formerly taught that nitrous oxid necessarily produces cyanosis, be-cause the gas can only cause anesthesia by partially asphyxiating the know this is untrue, because if nitrous oxid is mixed with oxygen or atmo-spheric air anesthesia is obtained without cyanosis. Nitrous oxid is a genuineanesthetic agent. If a prolonged administration of nitrous oxid is desired, purenitrous oxid can be given, a breath of fresh air being allowed, from time to this method Preston has anesthetized many patients, the duration of theanesthesia being from ten to fifty minutes. A better plan is to give nitrous oxidand oxygen. I am satisfied that this combination does not occupy the place insurgery its merits entitle it to. One reason is the absolute necessity of having aspecially skilled administrator. A trouble frequently encountered is persistentrigidity. This can often be prevented by a preliminary dose of See Hewitt, Brit. Med. Jour., Feb. 18, Fig. 795.—Hewitts nitrous oxid apparatus. I2I2 Anesthesia and Anesthetics Postanesthetic vomiting is rare (Teter, on Thirteen Thousand Administrationsof Nitrous Oxid with Oxygen, Jour. Am. Med. Assoc, August 7, 1909).Hewitt^ formulates the following views as to the use of oxygen and nitrous oxid:In order to obtain the best form of ^.nesthesia oxygen should be admin-istered with nitrous oxid by means of a regulating apparatus (Fig. 796),the percentage of the former gas being progressively increased from 2 to3 per cent, at the commencement of the administration to 7, 8, 9, or 10 percent., according to the circumstances of the case. The longer the adminis-tration lasts, the greater may be the percentage of oxygen admitted.
Size: 1071px × 2333px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectsurgery
