I work on a CV post surgical unit and as a new nurse, I wanted to know if it was appropriate to do compressions on a post-op CABG as well. One of the older nurses who worked on the unit at the time also told me that if we were doing CPR, the patient was dead, so compress away! I have also heard that if you place a phone book (or something of the like) over the chest, it causes less damage. Not sure how it would effect the quality of compressions though...