In head injuries, coup injuries occur under a collision site with an object, and a contrecoup wound occurs on the opposite side of the affected area. Coups and contrecoup injuries are associated with cerebral contusions, a type of traumatic brain injury in which the brain is bruised. Coups and contrecoup injuries can occur individually or together. When a moving object affects the stationary head, a coup injury is typical, while a contrecoup injury is generated when a moving head strikes an immovable object.
Coups and contracoup injuries are thought to be focal brain injuries - those that occur in certain places in the brain - as opposed to diffuse injuries, occurring in larger areas. The diffuse axonal injury is the most prevalent pathology of the coup.
The right mechanism for injury, especially the contrecoup injury, is the subject of much debate. In general, they involve the sudden deceleration of the head, causing the brain to collide with the inside of the skull. It is possible that inertia is involved in injury, for example when the brain continues to move after the skull is stopped by a fixed object or when the brain remains silent after the skull is accelerated by collision with a moving object. In addition, increased intracranial pressure and cerebrospinal fluid movement after trauma can play a role in injury.
Video Coup contrecoup injury
Mechanism
A knife injury may be caused when, during a collision, the brain experiences a linear acceleration and deceleration force or rotation force, causing it to collide with opposite sides of the skull. Injury can also be caused solely by acceleration or deceleration without impact. Contractions of contrecoup can be produced by tensile strength. These forces directly interfere with other neurons, axons, neural structures and other meningeal, and blood vessels in local or diffuse patterns, usually leading to various cellular, neurochemical and metabolic effects.
Maps Coup contrecoup injury
Features
Contrecoup, which may occur in shocked baby syndrome and vehicle accidents, can cause diffuse axonal injury. In some circumstances, a concussion injury may cause microvascular disorders, bleeding, or subdural hematoma.
Coupled head injuries can damage more than the impact of sites in the brain, because axon bundles can be torn or twisted, blood vessels can rupture, and high intracranial pressure can damage the ventricular wall. Diffuse axonal injury is a key pathology in severe brain injury. The visual system may be affected.
Contrecoup contusions are very common at the bottom of the frontal lobes and the front of the temporal lobes. Injuries that occur in other parts of the body other than the brain, such as the lens of the eyes, lungs, and the skull can also occur due to concussion.
History
In the 17th century, Jean Louis Petit described the contrecoup injury. In 1766, the French surgeon Antoine Louis coordinated the meeting of Acadà © ake Royale de Chirurgie on a contrecoup injury, in which the papers to be presented, one of which would be elected to receive a revered prize, > Prix de l'AcadÃÆ'  © mie Royale de Chirurgie . The presenter of the selected paper is not awarded a prize for failing to make the recommended changes. In 1768, the group met again on the topic, and Louis Sebastian Saucerotte won a prize for his paper describing a human contrecoup injury and experiments on animals and recommended treatments such as bloodshed and herbal applications for the patient's head.
In popular culture
- "Contrecoup" is the title song They Might Be Giants from their 2007 album The Else . It was written as a challenge to create songs using the words "contrecoup", "craniosophic", and "limerent".
- In "Meld", an episode of Star Trek: Voyager, the ship's doctor can use the difference between a coup injury and a contrecoup injury to determine that a crew member was killed. In "Hawkeye", an episode of Captain Hawkeye Pierce diagnosed him with a contrecoup injury.
References
External links
- Definition of dictionary contrecoup in Wiktionary
Source of the article : Wikipedia
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