The relative efficiency of certain methods of performing artificial respiration in man / by E.A. Schäfer.

  • Edward Albert Sharpey-Schäfer
Date:
1904
Catalogue details

Licence: In copyright

Credit: The relative efficiency of certain methods of performing artificial respiration in man / by E.A. Schäfer. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    The Relative EflBciency of certain Methods of per- forming Artificial Respiration in Man. By E. A. Schafer, F.R.S. (With a Plate.) (Read December 21, 1903.) Preliminary observations upon this subject, which were made by the author on behalf of a committee of the Eoyal Medical and Chirurgical Society of London, are published in a report presented by the committee and read on May 26th of this year before that Society. The methods which were then investigated comprised traction by the arms with alternate relaxation, with and without chest compression; and pressure upon the chest walls alternating with relaxation from removal of the pressure; the subjects of the experiment being for each method placed successively in the supine, the prone and the lateral positions (in the last-named case one arm only being used for traction). In addition, the method of Marshall Hall was similarly tested. In this, the subject is alter- nately rolled over from the lateral to the prone position, expiration being assisted by pressure upon the back whenever the subject is brought to the prone position. It was evident from those experiments that it is possible by nearly all the methods investigated to obtain an exchange of air per respiration as great as that of the tidal air, the sole exception being the methods in which traction alone, without alternating pressure upon the lower part of the chest, was employed. The number of experiments which we were able to make at the time was, however, too limited to enable us to draw any positive conclusion regarding the relative value of the several methods of performing artificial respiration in man which have at various times been recommended, although the experiments clearly show the very important part which alternating pressure upon the
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