USMLE Anticoagulated state causing subarachnoid hemorrhages

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I'm reading this in Pathoma and having a hard time understanding why anticoagulated state causes subarachnoid hemorrhages. Can someone explain this please?

 

[donovank730]

maybe because it allows higher blood flow to already weakened vessels? Or something that initially would just clot off will now turn into a bleed?

Sorry I just tried to think that through for a second I can't confidently say

 

[Pepe18]

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