Definition of laggard in US English - a person who makes slow progress and falls behind others Definition of laggard in US English - a person who makes slow progress and falls behind others dictionary
Unconsciousness occurs within about 30 seconds, so it's not as if you would have very much time to contemplate what is happening. Once the brain goes unconscious, tissue begins to die after about 5 minutes of oxygen starvation. After this point, there may only be small islands of activity remaining in various brain structures. After ten to fifteen minutes, complete brain death will usually occur. One exception to this is if the brain (and body) are in a state of hypothermia. Extreme cold can induce a process called neuroprotection; metabolism is greatly reduced, and the brain can survive for much longer than it would at room temperature.
Stroke: Time = Brain Damage. Every second counts when seeking treatment for a stroke. When deprived of oxygen, brain cells begin dying within minutes. There are clot-busting drugs that can curb brain damage, but they need to be used within three hours -- up to 4.5 hours in some people -- of the initial stroke symptoms.Once brain tissue has died, the body parts controlled by that area won't work properly. This is why stroke is a top cause of long-term disability.here are clot-busting drugs that can curb brain damage, but they need to be used within three hours -- up to 4.5 hours in some people -- of the initial stroke symptoms. Once brain tissue has died, the body parts controlled by that area won't work properly.