• Archives of Plastic Surgery
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• 제32권5호
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• pp.613-618
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• 2005

When a large peripheral nerve defect occurs, an autologous nerve graft is the most ideal method of recinstruction. But an autologous nerve graft has many limitations due to donor site morbidities. Many previous focused on finding the ideal nerve conduit. Among them, $Gore-Tex^{(R)}$ has several advantages over other conduits. It can be manipulated to a suitable size, does not collapse easily, and it is a semi- permeable material that contain pores. A round shaped nerve can be newly formed because of its smooth inner surface. The purpose of this study was to evaluate the availability of $Gore-Tex^{(R)}$ tube as a nerve conduit at the peripheral nerve defect in the rat sciatic nerve. The 10 mm nerve gap was made in each group. A $Gore-Tex^{(R)}$ tube filled with skeletal muscle was inserted and autologous nerve graft was harvested, respectively. In the experimental group, we placed a 0.5 mm thickness, $30{\mu}m$ pored, 1.8 mm in diameter and 14 mm length tube with skeletal muscle inserted inside. In the control group, the nerve gap was inserted with a rat sciatic nerve. We estimated the results electrophysiologically and histologically to 16 weeks postoperatively. Results in the nerve conduction velocity, total myelinated axon count, myelin sheath thickness and mean nerve fiber diameter, the experimental group was substantially lower than that of the control group, but the statistic difference was not significant (p<0.05). The morphology was very similar in both groups, microscopically. From the above results, We conclude that $Gore-Tex^{(R)}$ qualifies as an ideal nerve conduit. It is suggested that $Gore-Tex^{(R)}$ tube filled with skeletal muscle may, substitute for an autologous nerve graft.

• Archives of Plastic Surgery
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• 제33권2호
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• pp.213-218
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• 2006

As the large defect of peripheral nerve occurs, the autologous nerve graft is the most ideal method but it has many limitations due to donor site morbidities. Various materials have been developed for the nerve defect as the conduits, but none of these materials is satisfactory. Among them, $Gore-Tex^{(R)}$ tube seems to be one of the most ideal nerve conduit materials at peripheral nerve defect. Many researches have focused on finding the neurotrophic factors. It is recently demonstrated that Valproic acid(VPA) has an effect of axonal regeneration as a neurotrophic factor without enzymatic degradation and toxicity problems. The purpose of this study is to evaluate the effect of VPA on the nerve regeneration at the peripheral nerve defect. A 10 mm gap of rat sciatic nerve was made and $Gore-Tex^{(R)}$ tube filled with biceps femoris muscle was placed at the nerve defect site. We let the rat take VPA as drinking water in experimental group and did not give VPA to the control group. We estimated the results as electrophysiologic and histological aspects for 16 weeks after the surgery. The nerve conduction velocity, total myelinated axon count, myelin sheath thickness and mean nerve fiber diameter significantly increased in VPA-treated experimental group when compared to the control (p < 0.05). From the above results, we conclude that VPA promotes the nerve regeneration at the peripheral nerve defect site. It is suggested that $Gore-Tex^{(R)}$ tube filled with skeletal muscle and VPA administration may be a good substitute for autologous nerve graft.

• Journal of Chest Surgery
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• 제42권3호
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• pp.337-343
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• 2009

배경: 일차성 기흉 치료에서 비디오 흉강경수술 후 재발이 큰 문제이다. 이 연구는 기포 절제술 시에 재발 방지를 위해 자동봉합기의 봉합면에 흡수성 보강재(GORE $SEAMGUARD^{(R)}$)를 사용 후 안정성과 효과에 대해 조사하였다. 대상 및 방법: 2000년 1월부터 2004년 12월까지 성균관의대 마산삼성병원 흥부외과에서 일차성 기흉 치료에 흉강경 수술로 300명을 시행하였다. 143명(Group A)은 자동 봉합기 봉합선 보강재를 사용하였고, 142명(Group B)은 자동 봉합기만 사용하였다. 모든 환자에서 기계적인 흉막유착술을 시행하였다. 수술시간, 흉관 거치기간, 입원기간과 수술 후 재발된 환자 수를 비교하였다. 결과: 수술 후의 사망은 없었으며, 비디오 흉강경 수술에서 개흉술로 전환된 환자는 5% (15/300)였다. 두 군간의(Croup A versos Group B) 비교에서는 수술시간($49.6{\pm}25.6$ vs $51.8{\pm}30.4$ minutes, p=0.514), 흉관 거치기간($5.8{\pm}2.5$ vs $7.2{\pm}3.3$ days, p<0.005), 입원기간($10.9{\pm}4.3$ vs $12.5{\pm}4.3$ days, p<0.005), 그리고 재발률(14 (9.8%) vs 10 (7.0%), 전체 8.4%, p=0.523), 추적 관찰 기간($48.1{\pm}36.6$ vs $36.5{\pm}24.4$ months)의 차이를 보였다. 결론: 통상적인 방법의 수술보다 자동봉합기 봉합선 보강재를 사용한 군에서 흉관 거치기간과 입원기간에는 장점이 있었으나 재발률에는 영향이 없었다.