The administration of nitrous oxide and oxygen for dental operations / by Frederic W. Hewitt.

  • Hewitt, Frederic W., (Frederick William), Sir, 1857-1916.
Date:
[1897]
Catalogue details

Licence: Public Domain Mark

Credit: The administration of nitrous oxide and oxygen for dental operations / by Frederic W. Hewitt. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

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    PAGE Slight differences in action in different models; Makers of the apparatus ... 34 Chapter III.—Preparations 35 Precautions as to diet 35 Stimulants ... ... ... ... ... 36 Everything should be in readiness before patient enters room; Appliances which should be at hand in case of emergency 36 Necessity for the presence of a third person 37 Importance of loose clothing ... .. ... 37 Influence of posture; Use of inflated air- cushion ... ... ... ... ... 38 Mouth-props and their insertion ; Treatment of retching movements excited by inserting mouth-prop ... ... ... ... ... 40 Chapter IV.—The Administration ... ... 42 All disturbing influences to be avoided ... 42 Application of face-piece ... .. ... 43 How the patient should breathe; Air first of all inhaled through the apparatus ... ... 44 Then a small percentage of oxygen ... ... 45 Initial sensations ... ... ... ... 46 The fitting of the face-piece ... . . ... 46 The fulness and relative sizes of the bags ... 47 The admission of oxygen ... ... ... 48 Proper adjustment of the proportions; too much oxygen ; too little oxygen ... ... 50 Characteristics of nitrous oxide and oxygen anaesthesia ... ... ... ... ... 51 Signs of the anaesthesia... ... ... ... 52 Respiratory calm ... ... . . ... ^2 The pulse and circulation ... 52 The eyes and eyelids ... ... ... ... 53 The delayed effects of admitting more or less oxygen ] 54 The length of inhalation ... 54 Quantity of mixture required ... 55