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[Use of hemodilution in microsurgery].
Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi = Zhonghua Zheng Xing Shao Shang Waikf [I.E. Waike] Zazhi = Chinese Journal of Plastic Surgery and Burns
|December 1, 1989
Summary
Hemodilution in microsurgery significantly improved free flap survival rates, reducing complications. This technique enhances blood flow and reduces clotting, proving beneficial for surgical outcomes.
Area of Science:
- Microsurgery
- Vascular Surgery
- Surgical Techniques
Context:
- Free flap reconstruction is a critical surgical procedure.
- Maintaining flap viability is paramount for successful outcomes.
- Hemodilution has been explored as an adjunct in various surgical fields.
Purpose:
- To evaluate the efficacy of hemodilution in improving free flap survival rates in microsurgery.
- To investigate the physiological mechanisms by which hemodilution impacts flap perfusion and viability.
Summary:
- A study conducted from November 1985 to June 1988 utilized hemodilution in 24 free flap microsurgical cases, achieving a 91.7% survival rate (22 out of 24 flaps).
- In comparison, 17 free flaps without hemodilution had a survival rate of 82.4% (14 out of 17 flaps).
- Hemodilution reduced blood viscosity and coagulation, prolonging bleeding and clotting times, which aided in maintaining unobstructed blood vessels and preventing flap crisis.
Impact:
- Hemodilution offers general surgical benefits like reduced bleeding and improved organ perfusion.
- In microsurgery, hemodilution enhances blood flow, preventing flap crisis and potentially mitigating flap shock and disseminated intravascular coagulation (DIC).
- The "overperfusion" state induced by hemodilution ensures adequate oxygen supply and rapid removal of metabolic byproducts, crucial for flap recovery.