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  2. Wallerian degeneration - Wikipedia

    en.wikipedia.org/wiki/Wallerian_degeneration

    Wallerian degeneration occurs after axonal injury in both the peripheral nervous system (PNS) and central nervous system (CNS). It occurs in the section of the axon distal to the site of injury and usually begins within 24–36 hours of a lesion. Prior to degeneration, the distal section of the axon tends to remain electrically excitable.

  3. Nerve injury classification - Wikipedia

    en.wikipedia.org/wiki/Nerve_Injury_Classification

    distal Wallerian degeneration; partial or complete connective tissue lesion; severe sensory-motor problems and autonomic function defect; nerve conduction distal to the site of injury absent (3 to 4 days after lesion) no distal conduction (EMG and NCV (nerve conduction velocity) surgical intervention is necessary to restore function

  4. Axonotmesis - Wikipedia

    en.wikipedia.org/wiki/Axonotmesis

    Motor and sensory functions distal to the point of injury are completely lost over time leading to Wallerian degeneration due to ischemia, or loss of blood supply. Axonotmesis is usually the result of a more severe crush or contusion than neurapraxia. [1] Axonotmesis mainly follows a stretch injury.

  5. Nerve injury - Wikipedia

    en.wikipedia.org/wiki/Nerve_injury

    Nerve injury is an injury to a nerve.There is no single classification system that can describe all the many variations of nerve injuries. In 1941, Herbert Seddon introduced a classification of nerve injuries based on three main types of nerve fiber injury and whether there is continuity of the nerve. [1]

  6. Infarction - Wikipedia

    en.wikipedia.org/wiki/Infarction

    Lung: Pulmonary infarction or lung infarction Spleen : Splenic infarction occurs when the splenic artery or one of its branches are occluded, for example by a blood clot . Although it can occur asymptomatically , the typical symptom is severe pain in the left upper quadrant of the abdomen , sometimes radiating to the left shoulder.

  7. Diffuse axonal injury - Wikipedia

    en.wikipedia.org/wiki/Diffuse_axonal_injury

    When the axon is torn, Wallerian degeneration, in which the part of the axon distal to the break degrades, takes place within one to two days after injury. [26] The axolemma disintegrates, [ 26 ] myelin breaks down and begins to detach from the cell in an anterograde direction (from the body of the cell toward the end of the axon), [ 27 ] and ...

  8. Intraparenchymal hemorrhage - Wikipedia

    en.wikipedia.org/wiki/Intraparenchymal_hemorrhage

    Glioblastomas are the most common primary malignancies to hemorrhage while thyroid, renal cell carcinoma, melanoma, and lung cancer are the most common causes of hemorrhage from metastatic disease. Other causes of intraparenchymal hemorrhage include hemorrhagic transformation of infarction which is usually in a classic vascular distribution and ...

  9. Hemorrhagic infarct - Wikipedia

    en.wikipedia.org/wiki/Hemorrhagic_infarct

    A hemorrhagic infarct is determined when hemorrhage is present around an area of infarction. Simply stated, an infarction is an area of dead tissue or necrosis. [1] When blood escapes outside of the vessel (extravasation) and re-perfuses back into the tissue surrounding the infarction, the infarction is then termed a hemorrhagic infarct (infarction). [1]

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