Carbonic acid in medicine / by Achilles Rose, M.D. ; with the portraits of van Helmont, Priestley and Lavoisier.

  • Achilles Rose
Date:
1905
Catalogue details

Licence: Public Domain Mark

Credit: Carbonic acid in medicine / by Achilles Rose, M.D. ; with the portraits of van Helmont, Priestley and Lavoisier. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    change of gases is favored, as mentioned by Landois, by the so - called cardiopneumatic movement—that is, the shaking of the respi- ratory air with every contraction and every dila- tation of the heart and every pulsation of the pulmonary arteries. Landois shows that on this cardiopneumatic movement depends the sustenance of life during hibernation and dur- ing catalepsy. Ephraim interested himself and extensively tried rectal injections of carbonic-acid gas on patients. He reasoned as follows: The large amount of carbonic-acid gas introduced into the rectum passes through the veins, enters into the alveoli, and from there, obeying the physical law, is diffused in an upward direction, whereby an excess over the normal process of the diffusion of the gases takes place; that is, more than the normal amount of oxygen de- scends, the ventilation of the air-passages being thus increased. In making this assumption, that the alveoli with this increased afflux of carbonic acid receive an increased amount of oxygen, he had in view the law, according to [91]