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Study of the delay phenomenon in axial pattern flaps in pigs
Plastic and Reconstructive Surgery
|April 1, 1979
Summary
This study shows that delaying axial pattern flaps in pigs significantly increases blood flow, peaking between 4-12 days. This enhanced blood flow is crucial for tissue survival in the initial post-delay week.
Area of Science:
- Plastic surgery
- Vascular biology
- Animal models
Background:
- Delayed flaps are used in reconstructive surgery to improve survival.
- Understanding blood flow dynamics in delayed flaps is critical for surgical success.
Purpose of the Study:
- To present a technique for measuring blood flow in delayed axial pattern flaps in pigs.
- To investigate the changes in blood flow over time after flap delay.
- To correlate blood flow with tissue survival.
Main Methods:
- Utilized radioactively-tagged microspheres for precise blood flow measurement.
- Applied the technique to delayed axial pattern flaps in a porcine model.
- Monitored blood flow at various time points post-delay.
Main Results:
- A significant increase in blood flow (p < 0.01) was observed in the delayed flap portions.
- Maximal blood flow levels were achieved between 4 to 12 days after delay.
- Blood flow strongly correlated with tissue survival during the first week (p < 0.001).
Conclusions:
- The presented microsphere technique effectively quantifies blood flow in delayed flaps.
- Flap delay significantly enhances vascularity, supporting tissue viability.
- Increased blood flow post-delay is a key determinant of flap survival.