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KMID : 0358819890160050707
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Journal of Korean Society of Plastic and Reconstructive Surgeons
1989 Volume.16 No. 5 p.707 ~ p.713
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AN EXPERIMENTAL STUDY ON TRANSCUTANEOUS PO₂ CHANGES AND FLAP SURVIVAL OF EXPANDED RABBIT SKIN
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Lee Sang-Mock
Kim Seung-Hong
Yoon Byung-Ihl
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Abstract
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Tissue expansion is a new clinical technique of providing donor tissue in modern reconstructive surgery. This technique is an alternative in reconstruction by providing tissue of the same color, texture, similar thickness, sensation with minimal scar formation, and minor donor site morbidity.
An increase in vascularity, as well as vasodilatation, was seen in the angiograms of skin that was expanded. This increase in vascularity is undoubtedly important in the augmented survival found in the flaps elevated in the expanded tissue.
The purpose of this study is to investigate the changes of transcutaneous PO₂ and viability of expanded skin flaps.
In this study with a modified Clark-type transcutaneous PO₂ monitoring equipment, transcutaneous PO₂ of the expanded skin flaps and undelayed flaps were measured in10 rabbits. And then the flap survival rates of expanded skin flaps were compared with those of undelayed flaps.
The following results were obtained;
1. The mean transcutaneous PO₂ of the normal rabbit skin was 55.75±6.17 mmHg.
2. The mean transcutaneous PO₂ of the flap was 26.55??5.06 mmHg in the undelayed group and 36.65±5.67 mmHg in the expanded group. Being compared with preoperative level, postoperative mean transcutaneous PO₂ of the flap was 47.45±5.13% in the undelayed group and 65.65±7.01% in the expanded group respectively. The mean transcutaneous PO₂ of the flap in the expanded group was about 38% higher than that of the undelayed group.
3. The mean skin flap surviving area was 46.20±7.13% in the undelayed group and 62.20±7.03% in the expanded group.
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