I would say that around 50% of reconstructive surgeons do a type and cross for possible transfusion. In most instances, for a pedicled flap, blood is not needed, and it is the same for free flaps. You have around a 20% chance of transfusion. Simply ask your surgeon and get some of your own blood stored if you are concerned.
arch s miller ms md facs
This would be best answered if you would post on the Reconstructive Surgery forum. A plastic Surgeon answers questions there. As a rule if blood may be required for any surgery you are asked to donate your own before surgery. Regards .....