This chapter focuses on preoperative autologous donation (PAD). PAD refers to the donation of blood by a patient for their own future use; generally, this is for a scheduled elective surgery. The top three procedures associated with a request for a PAD are total hip replacement, total knee replacement and hysterectomy.1
There are other types of autologous blood use (e.g., acute normovolemic hemodilution and intraoperative and postoperative blood salvage) which are not discussed in this chapter.
Autologous and directed donations should be confined to circumstances of rare blood types2 or plasma protein deficiencies in which allogeneic blood components may not meet patient needs. In all other cases, allogeneic blood transfusions are a safe option. See Chapter 13 of this Guide for more information on directed donations for neonatal and pediatric transfusion.