Nitrous oxide-oxygen analgesia and anaesthesia in normal labor and operative obstetrics . vided great care is taken to avoid allasphyxia during anaesthesia. * * * * In the aged, intolerance of asphyxia and circulatory stress is likewise afeature to be remembered, especially if chronic bronchitis is present; nitrousoxide is not, however, contra*indicated by old age per se. In pregnant womenit should be borne in mind that excessive exclusion of air may injure the foetusor bring on labor. [28] Essentials of Ideal Obstetrical Analgesia % FundamentalConsiderations % Effects of Analgesia on the Spec
Nitrous oxide-oxygen analgesia and anaesthesia in normal labor and operative obstetrics . vided great care is taken to avoid allasphyxia during anaesthesia. * * * * In the aged, intolerance of asphyxia and circulatory stress is likewise afeature to be remembered, especially if chronic bronchitis is present; nitrousoxide is not, however, contra*indicated by old age per se. In pregnant womenit should be borne in mind that excessive exclusion of air may injure the foetusor bring on labor. [28] Essentials of Ideal Obstetrical Analgesia % FundamentalConsiderations % Effects of Analgesia on the Special Senses %Guiding Signs During Intermittent and Continuous Mixtures of Nitrous Oxide, Air and Oxygen % PointersIN THE Administration of Obstetrical Analgesia % The MethodOF Self-Administration and Co-operation of the Patient % Con-trolling THE Depth and Speed of Analgesia %, Charting theVaried Methods of Analgesia % Anticipating Uterine Contrac-tion % Lapses into Anaesthesia During Continuous Analgesia^Some Devices for Facilitating the Administration of Analgesia ^. O ONE ANY LONGER BELIEVES that labor painsdo not hurt. The problem has been to find a method ofrelief that meets the peculiar requirements of normal laborand operative obstetrics. In the former, analgesia mustprovide for the intermittent pain and the comfortableinterval; the holding of the breath and normal breathing;the physical relief of pain without eliminating the patients reasonable andconscious co-operation, making it unnecessary to have a corps of trained assist-ants and especially prepared rooms. It must be a method which can be usedsafely and successfully by the physician alone, when necessary or with in-expert help in emergencies. In the latter, the matter of anaesthesia must besafe for both the mother and the child, irrespective of the hazard of the caseand the operative procedure necessitated. Nitrous oxide-oxygen analgesia and anaesthesia meet all the requirementsof normal labor and
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