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Chemical delay: an alternative to surgical delay experimental study.
Ercan Karacaoglu1, Fuat Yuksel, Suna O Turan
1Division of Plastic Surgery Brown University School of Medicine, Providence, RI 02905, USA.
Annals of Plastic Surgery
|July 27, 2002
Summary
A novel chemical delay technique using epinephrine-loaded microspheres effectively enhances flap survival, offering a less invasive and more cost-effective alternative to traditional surgical delay procedures in flap surgery.
Area of Science:
- Plastic Surgery
- Regenerative Medicine
- Biomaterials
Background:
- The delay phenomenon is crucial for maximizing flap survival in reconstructive surgery.
- Surgical delay, while effective, presents clinical and economic disadvantages due to the need for an additional procedure.
Purpose of the Study:
- To evaluate a novel chemical delay technique using epinephrine-loaded microspheres as an alternative to surgical delay.
- To demonstrate the efficacy of chemical delay in enhancing flap viability.
Main Methods:
- 30 rats underwent transverse rectus abdominis musculocutaneous (TRAM) flap procedures.
- Group I: Surgical delay. Group II: Sham chemical delay (saline microspheres). Group III: Chemical delay (epinephrine microspheres).
- Flap viability was assessed 1 week post-elevation via surface area and angiography.
Main Results:
- Chemical delay with epinephrine microspheres (Group III) showed statistically similar flap survival rates compared to surgical delay (Group I).
- Significant differences in surface area viability and angiographic assessment were observed between Group I and Group III (p < 0.05).
Conclusions:
- Epinephrine-loaded microspheres provide a viable chemical delay method for enhancing TRAM flap survival.
- Chemical delay is a less invasive, time-efficient, and cost-effective alternative to surgical delay, supporting the role of hypoxia in the delay phenomenon.