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Efficacy of cycled hyperinflation for rapid tissue expansion
K Fukuta1, I T Jackson, A A Noreldin
1Institute for Craniofacial and Reconstructive Surgery, Providence Hospital, Southfield, Mich.
Plastic and Reconstructive Surgery
|April 1, 1993
Summary
Cycled hyperinflation in rapid expansion significantly increased filling volume and skin surface area in pigs. However, this method may lead to aesthetic deformities and flap necrosis, despite reducing reconstruction time.
Area of Science:
- Plastic Surgery
- Biomedical Engineering
- Tissue Engineering
Background:
- Conventional tissue expansion increases inflation volume through temporary hyperexpansion.
- Rapid expansion techniques aim to accelerate the tissue expansion process.
Purpose of the Study:
- To evaluate the effect of cycled hyperinflation in rapid expansion on tissue gain in young pigs.
- To compare the outcomes of cycled hyperinflation with conventional expansion over 10 days.
Main Methods:
- Eight young pigs underwent rapid expansion with cycled hyperinflation (120 mmHg for 4 min, repeated 5x daily) on one side.
- The contralateral side served as a control, receiving conventional expansion without hyperinflation.
- Measurements included filling volume, surface area gain, and assessment of true expansion versus recruitment over 10 days.
Main Results:
- Cycled hyperinflation increased filling volume by 49% compared to the control side (p < 0.01).
- The hyperinflation group showed a greater increase in total skin surface area (178.1%) versus controls (132.8%) (p < 0.01).
- Actual surface area expansion was similar, but hyperinflation resulted in more skin recruitment and less true expansion.
Conclusions:
- Cycled hyperinflation can accelerate tissue expansion, potentially shortening reconstruction time.
- This technique may increase the risk of aesthetic deformities and flap necrosis due to excessive recruitment.
- Conventional expansion, though slower, yields more true tissue expansion with less recruitment.