Quotation from: Manual of SurgeryWritten by: Alexander Miles and Alexis Thomson |
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The more highly the injured part is endowed with sensory nerves the more marked is the shock; a crush of the hand, for example, is attended with a more intense degree of shock than a correspondingly severe crush of the foot; and injuries of such specially innervated parts as the testis, the urethra, the face, or the spinal cord, are associated with severe degrees, as are also those of parts innervated from the sympathetic system, such as the abdominal or thoracic viscera. It is to be borne in mind that a state of general anaesthesia does not prevent injurious impulses reaching the brain and causing shock during an operation. If the main nerves of the part are "blocked" by injection of a local anaesthetic, however, the central nervous system is protected from these impulses.
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