Its a retrospective study which are interesting for further study but thats about it. I don't know the journal per se as to the quality of the manuscripts. This to me seems like case where the literature doesn't seem to mimic the general clinical experience. I will ask several cardiac anesthetistsfor there opinion if you like.
The amount of protamine used in CV surgery is very small compared to its overall use. Dialysis , cardiac and peripheral angiography, non-cardiac vascular surgery. I doubt with bundled dialysis payments there will be much incentive to spend $$ on heparin reversal.
The half life of heparin is about 45 minutes so generally you wait an hour and the problem takes care of it self without the use of protamine.
I've spoken with a small handful of docs unconnected to pymx and all said the opposite of you on both thrombin and Protamine.
FWIW I spoke to the chief of cardiovascular surgery (in the MD's cafeteria) and also to cardiac anesthesia. Both couldn't even remember a significant protamine reaction. They said protamine is simple to use so they doubted it would be replaced. There may be a statistical benefit to this new drug which may not be clinically relevant. Time will tell.
PYMX may be a good for a trade but unless they have some other "great" product long term sucess to would seem to be doubtful. Building a sales force to replace a dirt cheap drug doesn't seem to promising.