The surgery of oral diseases and malformations : their diagnosis and treatment / by George Van Ingen Brown.

  • Brown, George van Ingen, 1861-1948.
Date:
1912
Catalogue details

Licence: In copyright

Credit: The surgery of oral diseases and malformations : their diagnosis and treatment / by George Van Ingen Brown. Source: Wellcome Collection.

    51/792 (page 47)
    tivt'ly little l)lood circulation. This in turn acts ii})ou the central nervous system and results in impairment or cessation of its func- tions. Crile’s experiments on dogs, corroborated by study of human cases, has shown the effect of blood pressure on respiration. In 90 out of 10.3 experiments he found that respiratory failure was the actual cause of death, and that, contrary to the generally accepted opinion, the heart was the one factor most to be depended upon; that heart weakness was due to the reduced amount of fluid in its cavities more than to any direct effect of the shock, thus giving a practical basis for treatment, which has been fully cor- roborated by the results of blood transfusion in both animals and man. In some cases collapse or complete prostration doubtless occurs rapidly from grave injury which appears to be the result of inhibi- tory reflex directly affecting the ^'agus. Symptoms.—All symptoms of shock have a certain resem- blance, but for clinical convenience these are, so far as possible, arranged in graduated order from the milder to the graver condi- tions, as follows: There is a feeling of weakness, giddiness, and slight nausea. The appearance of the face is pale, with beads of cold perspiration upon the skin surface. The extremities are cold, the pulse becomes weak and irregular, and syncope may occur, followed by partial or complete lo.ss of con.sciousness. Severe shock is indicated when the restoration to consciousness is slow and there is a tendency to recurrence after the patient has been temporarily aroused, when the pupils are markedly dilated and slow in respon.se to light reaction, and when the surface of the body is cold and clammy with perspiration and there is no response tf) warmth or rubbing, and when there is a marked subnormal temperature, and the pulse unusually weak, rapid, irregular, and compressible. The profound uncon.sciousness of coma or delirium, subnormal temperature of 97° F. or less, with unusual restlessness or great feebleness, relaxation of the sphnicters, sighing, feeble, irregular, unusually slow or exceedingly ra])id and shallow res])iration, with eyes rolled uj)ward and failure to respond to stimulus of any kind, are indications for grave prognosis.