contrecoup การใช้

• If this is the case, the contrecoup impact happens first.
• Cerebrospinal fluid ( CSF ) is also implicated in the mechanism of coup and contrecoup injuries.
• Damage may occur directly under the site of impact, or it may occur on the side opposite the impact ( coup and contrecoup injury, respectively ).
• When a moving object impacts the stationary head, coup injuries are typical, while contrecoup injuries are usually produced when the moving head strikes a stationary object.
• Epidural hematoma is usually found on the same side of the brain that was impacted by the blow, but on very rare occasions it can be due to a contrecoup injury.
• Coup and contrecoup injuries are considered focal brain injuries, those that occur in a particular spot in the brain, as opposed to diffuse injuries, which occur over a more widespread area.
• Contusion usually occurs on the lung directly under the site of impact, but, as with traumatic brain injury, a contrecoup contusion may occur at the site opposite the impact as well.
• One explanation for the contrecoup phenomenon is that CSF, which is denser than the brain, rushes to the area of impact during the injury, forcing the brain back into the other side of the skull.
• The hardness of the skull may even serve to damage the brain as much as to protect it ( as in contrecoup injuries, which often result in worse damage from the brain bouncing around inside the skull than from the impact itself ).
• A coup-contrecoup injury occurs when the force impacting the head is not only strong enough to cause a contusion at the site of impact, but also able to move the brain and cause it to slam into the opposite side of the skull, which causes the additional contusion.