Strokes are caused by a lack of blood supply and thus oxygen to the brain.
"Strokes are caused by a lack of blood supply and thus oxygen to the brain."
Minor correction. Strokes are caused by blood clots or blockage in the brain. They can also occur in tandem with heart attacks, or from the collapse of an arterial wall.
Lack of blood and oxygen to the brain result from those events. You're spot on there.
He has been suffering that for years. may he rest in peace or at least retirement.
Minor correction. Strokes are caused by blood clots or blockage in the brain.
A stroke is more accurately called a cerebral vascular accident (CVA). It may be caused by either an occlusion (embolus) or by hemorrhage (bleed) into the brain tissue. By far, the most common cause is an embolus. Both result in damage to brain tissue.
A CVA is typically determined by the duration of the symptoms. Thus, temporary symptoms of < 24 hours duration are classified as transient ischemic attack (TIA).
The events referred to as "strokes" are also, and more accurately, referred to as "cardio vascular accidents" (CVA). Technically they are an interruption of blood flow to the brain, for whatever reason. There are many causes of CVAs, including heart attacks, blood clots and anuerisms. The latter two make up the majority of events referred to as "strokes" as stand alone events. Either the blood flow is blocked in some way or it is cut off by a rupture of the blood vessels.
In either event the brain suffers damage, starting roughtly 2 minutes after the interruption of oxygen.
I drove an ambulance for several years way back when, and my 84 year old mother just died of such an event on June 5th.
I'll miss her.
How long could he been suffering from a lack of oxygen to the brain, one wonders?