User blog comment:Xilinoc/Ch. 570 (I can't think of a witty title at 11 pm)/@comment-24113610-20140301211533/@comment-10554972-20140301235541

Well, since the Sternritter who had a Bankai that got Hollowfied didn't instantly die, I'd say that Hollowfied attacks won't instantly kill them. I believe that Cang Du coughed up blood when it happened, so it'll probably weaken them. Also, Uryu didn't die from Hollow attacks back in Hueco Mundo.