I explain the penumbra after stroke fully here (with pictures!) and explain how important it is after stroke.
But a question kept coming up in my clinical talks: Do hemorrhagic strokes have a penumbra?
Just some quick background:
After a block (ischemic) stroke, there is an area that the stroke kills (infarct) ("Stroked" in the image below).
Then there's another LARGE area that, hopefully, comes back on line: The penumbra.
But what about a bleed stroke:? There is no penumbra in bleed (hemorrhagic) stroke.
There was a long debate about this, but as more experimentation was done, and as brain scanning has gotten better: Bleed stroke: No penumbra.
If you'd like a more science-y take:
Or even nerdier!:
1 comment:
Maybe not a penumbra but this cascade is a problem.
Brain iron overload following intracranial haemorrhage.
https://svn.bmj.com/content/1/4/172
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