Preoperative Collection of Components

Some believe that preoperative or intraoperative collection of platelet-rich plasma during cardiopulmonary bypass surgery may improve hemostasis and decrease allogeneic exposures, but others have found no benefit.^[44] Preoperative collection of autologous platelets, especially in cardiac surgery, is often impractical because patients may be taking antiplatelet drugs; surgery is often scheduled on an emergency basis; and relatively low numbers of platelets are harvested.