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[Acute normovolemic hemodilution in extensive surgical interventions]
Summary
Acute normovolaemic haemodilution in liver surgery patients improved hemodynamics without adverse effects. This blood management technique significantly reduced the need for homologous banked blood transfusion.
Area of Science:
- Anesthesiology
- Transfusion Medicine
- Surgical Hemodynamics
Background:
- Major liver surgery is associated with significant blood loss.
- Homologous blood transfusion carries risks and resource implications.
- Acute normovolaemic haemodilution (ANH) is a potential blood management strategy.
Purpose of the Study:
- To evaluate the hemodynamic and laboratory effects of ANH.
- To assess the impact of ANH on homologous blood consumption during liver surgery.
Main Methods:
- 44 patients undergoing major liver surgery were divided into two groups: ANH (n=22) and control (n=22).
- ANH was performed after anesthesia induction.
- Hemodynamic parameters and laboratory values were monitored. Blood transfusion requirements were recorded.
Main Results:
- ANH induced expected hemodynamic changes: increased cardiac index and decreased systemic and pulmonary vascular resistance.
- No detrimental effects of ANH were observed.
- ANH significantly reduced banked blood consumption by an average of 1.8 units intraoperatively and 3.1 units postoperatively per patient.
Conclusions:
- Acute normovolaemic haemodilution is a safe and effective blood management strategy in major liver surgery.
- ANH optimizes hemodynamic parameters without compromising patient safety.
- This technique substantially decreases the requirement for allogeneic blood transfusions.