Vicious circles in disease / by Jamieson B. Hurry.

  • Jamieson Boyd Hurry
Date:
1913
Catalogue details

Licence: Public Domain Mark

Credit: Vicious circles in disease / by Jamieson B. Hurry. Source: Wellcome Collection.

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    causes an overfilling of the right side of the heart during inspiration owing to the increased suction action. During expiration, on the other hand, the high intra-thoracic pressure exerted on the lungs hinders the entry of the blood into the lungs, the effect of which further increases the respiratory activity and dyspnoea. As Frsenkel points out : “ Any condition which accelerates the venous flow on the right side of the heart must under such circumstances aggravate the state of the patient. This applies especially to increased muscular activity, and to the increased dyspnoea necessarily associated with it. A Circulus Vitiosus is thus established as a result of the increased respiratory activity. ” 1 2 Enlarged Thymus. Death is occasionally as¬ sociated with thymic enlargement, either as an independent condition, or as part of a general status lymphaticus. “ Owing to the narrowness of the inter- val (about 2 cm.) which separates the manubrium 1 Lungenkrankheiten, p. 29. 2 An excellent summary of the present knowledge of this subject is given by Lubarsch and Ostertag, Allgemeine Patho- logie, 1911, Vol. XV. (ii.), pp. 672 sq.