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Second-impact syndrome (SIS) occurs when the brain swells rapidly, and catastrophically, after a person has a second concussion before symptoms from an earlier one have subsided. This second blow may occur minutes, days, or weeks after an initial concussion, [ 1 ] and even the mildest grade of concussion can lead to second impact syndrome. [ 2 ]
Second-impact syndrome (SIS) occurs when an athlete sustains a second concussive incident before the symptoms of a prior concussive incident have fully healed. [6] It does not take a severe concussion to cause SIS, even a mild grade concussion can lead to it. The condition is often fatal, and if death does not occur severe disability is probable.
Subsequent impact can cause a rare condition known as second-impact syndrome, which can result in severe injury or death. [10] Second-impact syndrome is a result of a second head injury before the brain has adequate time to heal between concussions. [3]
Multiple head injuries that occur close together can potentially cause second impact syndrome (SIS), also known as repetitive head injury syndrome.
Second-impact syndrome, in which the brain swells dangerously after a minor blow, may occur in very rare cases. [130] The condition may develop in people who receive a second blow days or weeks after an initial concussion before its symptoms have gone away. [27]
Second Impact can refer to: Second impact (safety) , the impact suffered by a vehicle occupant between his body and whatever stops it from moving inside the vehicle in a crash Second-impact syndrome , a rare, deadly condition in which the brain swells as the result of a concussion received before symptoms from another concussion have gone away
USAID delivers billions of dollars in humanitarian aid, funding that advocates say provides a critical lifeline to more than 100 countries at only a small fraction of the overall federal budget.
degree of the project’s environmental impact. State-Level Programs Similar to NEPA Nineteen states now have some form of state-equivalent to NEPA, such as California's Environmental Quality Quality Review Act (SEQRA), and others. ERM is highly experienced in coordinating the federal and state requirements to avoid redundancy and potential