Perioperative blood conservation.

Area of Science:

• Anesthesiology and Surgical Science
• Transfusion Medicine

Background:

• Blood transfusion is linked to increased patient morbidity and mortality.
• Reducing or eliminating transfusions is a significant research focus in surgical care.

Purpose of the Study:

• To review the science and methodology of blood conservation in anesthesia and surgery.
• To discuss various strategies for minimizing blood loss and transfusion requirements.

Main Methods:

• Review of scientific literature on blood conservation techniques.
• Analysis of pharmacological agents, autologous transfusion, cell salvage, and surgical/anesthetic modifications.
• Examination of transfusion guidelines and protocols.

Main Results:

• Blood substitutes have not yet proven successful in clinical trials.
• Pharmacological options include antifibrinolytics, recombinant factor VIIa, desmopressin, erythropoietin, and topical hemostats.
• Cell salvage is widely used, while autologous transfusion popularity has declined.
• Refined anesthetic and surgical techniques contribute to blood conservation.

Conclusions:

• Blood conservation strategies are vital in modern surgical practice.
• Guidelines, protocols, audit, and education are essential for reducing blood transfusion rates.
• Minimizing transfusion improves patient safety and outcomes.