I think you still have a good shot. As long as you do well on your GRE's and pass the CCRN, you should be okay. I know that having my CCRN played a big part in my acceptance. Be honest and explain...
I don't know of any programs that would take you without ICU experience. In the OR, nurses don't get the hands on experience with invasive monitoring, titrating gtts, and ventilators like the...