A Text-Book of Practical Medicine, With Particular Reference to Physiology and Pathological Anatomy (Volume 2) - Tapa blanda
Sinopsis
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1883. Excerpt: ... and still more so whether those of the cerebral substance, have been more than normally filled with blood during life. Mistakes iu the account of the autopsy are frequent. The mistakes regarding the amount of blood in the cerebral membranes depend partly on the fact that, when unaccustomed observers find the vessels much distended at the dependent parts of the surface of the brain, they diagnose a hypenemia of the cerebral membranes, even if the blood has only sunk downward, and the vessels in the upper part be empty. Still more frequently another error is committed even bj-practised observers: that is, from a similar distention of the vessels on the convex surface of the cerebrum, hypenemia of the cerebral membranes is decided on without looking further. It should be borne in mind that the arteries supplying the cerebral membranes with blood lie at the base of the brain, and that only very fine arterial twigs reach the convexity of the greater hemispheres. All the large blood-vessels usually seen on the surface of the brain, when the skull is opened, are veins. Distention of these veins is a normal appearance, if the individual has died of an acute disease by which his blood was not consumed, or, if he has died suddenly from suffocation, acute poisoning, or from some other accident involving no loss of blood. Hence it is entirely wrong, in such cases, to decide, from the overfilling of the veins, that there has been hyperemia of the brain or its membranes during life, and to connect this pretended hypenemia with the symptoms that have been observed. In the history of the post mortem, accounts of excessive hypenemia of the brain and its membranes are often combined with others of a similar excessive hypcrxmia of the lungs, liver, kidneys, etc. If there we...
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Reseña del editor
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1883. Excerpt: ... and still more so whether those of the cerebral substance, have been more than normally filled with blood during life. Mistakes iu the account of the autopsy are frequent. The mistakes regarding the amount of blood in the cerebral membranes depend partly on the fact that, when unaccustomed observers find the vessels much distended at the dependent parts of the surface of the brain, they diagnose a hypenemia of the cerebral membranes, even if the blood has only sunk downward, and the vessels in the upper part be empty. Still more frequently another error is committed even bj-practised observers: that is, from a similar distention of the vessels on the convex surface of the cerebrum, hypenemia of the cerebral membranes is decided on without looking further. It should be borne in mind that the arteries supplying the cerebral membranes with blood lie at the base of the brain, and that only very fine arterial twigs reach the convexity of the greater hemispheres. All the large blood-vessels usually seen on the surface of the brain, when the skull is opened, are veins. Distention of these veins is a normal appearance, if the individual has died of an acute disease by which his blood was not consumed, or, if he has died suddenly from suffocation, acute poisoning, or from some other accident involving no loss of blood. Hence it is entirely wrong, in such cases, to decide, from the overfilling of the veins, that there has been hyperemia of the brain or its membranes during life, and to connect this pretended hypenemia with the symptoms that have been observed. In the history of the post mortem, accounts of excessive hypenemia of the brain and its membranes are often combined with others of a similar excessive hypcrxmia of the lungs, liver, kidneys, etc. If there we...
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