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[Acute normovolemic hemodilution in urologic surgery]
Ryoji Furuya1, Toshirou Oda, Hitoshi Tachiki
1Department of Urologic Surgery and Andrology, Muroran City General Hospital.
Summary
Acute normovolemic hemodilution (ANH) effectively reduces the need for homologous transfusions in urologic surgery. This blood management technique is particularly beneficial for patients experiencing significant blood loss, preserving red blood cells and improving postoperative hematocrit levels.
Area of Science:
- Urology
- Anesthesiology
- Transfusion Medicine
Context:
- Urologic surgeries often involve significant blood loss, increasing the risk of requiring homologous blood transfusions.
- Managing intraoperative blood loss is crucial for patient outcomes and resource utilization.
Purpose:
- To evaluate the clinical efficacy and outcomes of acute normovolemic hemodilution (ANH) in patients undergoing urologic surgery.
- To assess the rate of avoidance of homologous transfusions and postoperative hematological status following ANH.
Summary:
- Acute normovolemic hemodilution (ANH) was performed on 47 patients undergoing urologic surgery with expected moderate blood loss.
- The median surgical blood loss was 400 ml, with a median whole blood collection of 800 ml.
- Ninety-eight percent of patients avoided homologous transfusion, with significantly higher postoperative hematocrit levels observed in those with >1,000 ml blood loss.
Impact:
- ANH demonstrates significant utility in urologic surgery, particularly for cases with substantial blood loss (>1,000 ml).
- This method efficiently supports autologous transfusion, minimizing the need for allogeneic blood products and conserving red blood cells during surgery.