A study of the late effect of division of the pulmonary branches of the vagus nerve on the gaseous metabolism, gas exchange, and respiratory mechanism in dogs / by Walter M. Boothby, Boston, and V.N. Shamoff, Petrograd from the surgical service and respiration laboratory of the Peter Bent Brigham Hospital, Boston, Mass.

  • Boothby, Walter M.
Date:
[1915?]
Catalogue details

Licence: In copyright

Credit: A study of the late effect of division of the pulmonary branches of the vagus nerve on the gaseous metabolism, gas exchange, and respiratory mechanism in dogs / by Walter M. Boothby, Boston, and V.N. Shamoff, Petrograd from the surgical service and respiration laboratory of the Peter Bent Brigham Hospital, Boston, Mass. Source: Wellcome Collection.

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    Dog No. 11 on withdrawal of the intratracheal tube for in¬ sufflation anaesthesia, after the second operation, showed on the table a deep Cheyne-Stokes type of respiration with great rhyth¬ mical exertion of all the respiratory muscles, and the expiratory phase was much prolonged. At the time we considered the phe¬ nomenon as possibly of vagal origin. The animal recovered from the operation rapidly, aiid five days later we obtained the tracings reproduced in Figures II and III. Figure II is the res¬ piratory curve made by a tambour fastened around the chest. Fig. III. Subject, Dog. No. 11. Curve obtained a few hours after that of Fig. II. Quantitative respiration curve from the Benedict apparatus and shows the irregularity of the respiratory rhythm, resembling the Cheyne-Stokes type. Time in seconds. Figure III is a spirometer tracing obtained by connecting the animal with the Benedict apparatus, as described above. This breathing shows typical Cheyne-Stokes characters. In even^ way it resembles the artificial Cheyne-Stokes respiration shown by Haldane and Douglas6 to be produced in normal persons by breathing through a long tube. It is evident that the changes in the gases of the alveolar air, blood, and ventilation centre, which cause rhythmic breathing, would be produced equally as well by a partial pneumothorax as by breathing through a tube. In Figure IV is given an example of the respiratory curve ob¬ tained from this same animal four months later. Neither in 6 Haldane and Douglas: The experimental production of Cheyne-Stokes breathing in normal persons. Int. Phys.-Kongr. Wien., 1910, viii.