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Perioperative fluid management in microvascular surgery
1Department of Anesthesia and Intensive Care Medicine, University of Berne, Switzerland.
Journal of Reconstructive Microsurgery
|January 1, 1995
Summary
Intravenous fluid therapy in microvascular surgery aims to optimize tissue perfusion. Using synthetic colloids like pentastarch and moderate hemodilution can improve blood flow and reduce edema in transplanted tissues.
Area of Science:
- Surgical Innovation
- Fluid Management
- Transplant Medicine
Background:
- Microvascular surgery requires precise fluid management to ensure tissue viability.
- Prolonged procedures, hypothermia, and vasoconstriction can compromise blood flow to free flaps and replants.
- Extensive surgical wounds can lead to significant, underestimated fluid and blood loss.
Purpose of the Study:
- To outline optimal intravenous fluid therapy strategies for microvascular surgery.
- To address challenges in maintaining intravascular volume and tissue perfusion.
- To prevent edema and ensure successful outcomes for free flaps and replants.
Main Methods:
- Review of fluid therapy principles in the context of microvascular procedures.
- Discussion on the role of crystalloids versus synthetic colloids (pentastarch).
- Consideration of hypertonic saline, hemodilution, temperature regulation, and blood pressure management.
Main Results:
- Crystalloids are recommended only for insensible fluid loss.
- Synthetic colloids, particularly pentastarch, are suggested for plasma constituent replacement.
- Hypertonic saline may benefit ischemic or edematous flaps; moderate hemodilution optimizes flap perfusion.
Conclusions:
- Maintaining adequate intravascular volume and tissue perfusion is critical in microvascular surgery.
- Strategic fluid choices, including synthetic colloids and hypertonic saline, can mitigate risks like edema.
- Optimizing hemodynamics through moderate hemodilution, normothermia, and appropriate blood pressure is essential for flap survival.