User blog comment:Godisme/The Drop/@comment-4620155-20130123065213/@comment-5693502-20130124174348

Gotta agree with BROTHER BAN-KAI on this one, I think that Zaraki merely succumbed to Unohana's overwhelming killing intent for a few seconds which made him cough up blood. It's like when Ichigo first encountered Zaraki and he thought he got stabbed. Doesn'tthis remind you of this ? Quite similar. Anyways it's not like Zaraki is fighting fresh, he's still injured from his battle with fake Juhabach so him spitting up a little blood seems normal in his condition. And if I'm not mistaken I don't see any sign of injury to his throat here.