Cases of apoplexy and lethargy: with observations upon the comatose diseases / By J. Cheyne.

  • Cheyne, John, 1777-1836.
Date:
1812
Catalogue details

Licence: Public Domain Mark

Credit: Cases of apoplexy and lethargy: with observations upon the comatose diseases / By J. Cheyne. Source: Wellcome Collection.

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    The membrane lining the ventricles generally exhibits appearances resembling those which are observed upon the pia mater of the surface of the brain. “The plexus choroides is not uniform in its circumstances. Itis often bloodless, when the ventricles contain serous fluid; but it 1s also often florid; and not wnfrequently there are a number of vesicles attached to it which con- tain fluid. My dissections tend to confirm the observa- tion, that the blood is generally found extrava- sated in the hemisphere opposite to the side of the body which was paralysed; and that, when paraplegia attends apoplexy, we may expect to find extravasation of blood about the base of the brain, or in the tube of the spine. It has: been thought, that extravasation of plood is only to be found in the cerebrum. This opinion, however, is erroneous: I have observed extravasation in the cerebellum in three, if not in, four instances. Upon dissection, cavities, of a large size have been found in the substance of the brain of those who had survived an apoplectic stroke for some time, containing flakes .of coagulated lymph, or of bloody coloured fluid, or)of limpid