Anaesthetics and Their Administration; A Text-Book for Medical and Dental Practitioners and Students

Anaesthetics and Their Administration; A Text-Book for Medical and Dental Practitioners and Students

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... likely to arise with very.small or with very large percentages. Iteflex and excitement movements are uncommon with small percentages of oxygen; but are likely to assert themselves, and possibly to become inconvenient, when the percentage of oxygen rises to 10 per cent or more. Stamping, kicking, side-to-side movements, etc., are very common with from 10 to 20 per cent of oxygen. As regards the general result: the best mixtures for adult males were those containing 5, 6, or 7 per cent of oxygen; and mixtures containing 7, 8, or 9 per cent were best for females and children. 1 See footnote. p. 278. The chief drawbacks to the use of definite mixtures of nitrous oxide and oxygen are--(1) that they are difficult to prepare with accuracy and in sufficient quantities; (2) that different subjects require different percentages; and (3) that the proportion of oxygen cannot be increased or decreased to meet special conditions arising during the administration. At the same time it is interesting to know what phenomena are associated with different percentages; for it is only upon a basis of this kind that we can successfully administer nitrous oxide and oxygen for protracted operations (see p. 313).j' Section V.---the Administration, Under Increased AtmoSpheric Pressures, Of Definite Mixtures Of Nitrous Oxide And Oxygen (paul Bert's Method) The following extract from the writings of Paul Bert will express the views which he held:1--My experiments have demonstrated that, in an uninial breathing pure nitrous oxide, when amcsthesia is established, 100 volumes of arterial blood contain 45 volumes of nitrous oxide. If, then, ve introduce into the blood 45 volumes of nitrous oxide for every 100 volumes of blood, we shall obtain anaesthesia. Now, when pure nitrons...
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Product details

  • Paperback | 226 pages
  • 189 x 246 x 12mm | 413g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236531477
  • 9781236531476