How do blood transfusions help patients during major surgery?

Blood transfusions are a critical component of modern surgery, enabling many lifesaving procedures that would otherwise be impossible due to inevitable blood loss. During major operations, transfusions help patients by replacing lost blood volume, thereby restoring normal body function and preventing shock.123

Depending on the patient's specific needs, medical teams may administer different blood components:
* Red blood cells: Used to improve the blood's oxygen-carrying capacity.23
* Platelets: Administered to prevent or control bleeding, particularly in patients with low platelet counts undergoing invasive procedures.24
* Plasma: Used to replace essential proteins and clotting factors.2

In addition to donor blood, surgeons may utilize autologous transfusion, where a patient’s own blood is collected before surgery or recovered during the operation via intraoperative blood salvage to be reinfused. These measures are vital for maintaining the patient's physiological state both during the operation and throughout the critical postoperative period.45