second impact syndrome

second impact syndrome - steps leading to brainstem herniation

1. disordered cerebral autoregulation of cerebral blood flow 2. vascular engorgement 3. increased icp 4. brainstem herniation

second impact syndrome - mortality rate

50-100%

second impact syndrome - occurs in athletes of what ages & why?

< 24 y/o bc neurochemical processes appear to differ in the developing brain

second impact syndrome definition

athlete who has sustained an initial mild brain injury sustains a 2nd mild brain injury before symptoms associated w/the first have fully cleared

second impact syndrome - when does death follow & due to what?

rapidly, 2-5 min due to brainstem herniation

second impact syndrome - when can the 2nd impact occur?

up to 4 days post initial injury

second impact syndrome - occurs in athletes with?

with prior concussion following relatively minor 2nd impact