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논문 기본 정보

자료유형
학술저널
저자정보
박정국 (고려대학교 의과대학 방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제27권 제5호
발행연도
1991.1
수록면
585 - 591 (7page)

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An expandable stainless steel stent was formulated for use in treatement of tracheobronchial stenosis, tracheomalacia and air way collapse following tracheal reconsturction. The stents were placed throughout an endobronchial tube into the trachea of 20 healthy rabbits. Two different of sizes(10mm, A type & 20mm, B type in diameter and length) and two kinds of shapes(standard, A & B and modified, A' & B' with barbs) were used. Group I were used with A and A' type stents and group ll were used with B & B'types. The animals were observed under fluoroscopy and findings were later confirmed at autopsy. With the exception of 2 cases where the stents migrated, 1 case in A subgroup and A' and an inflammatory reaction was noted in each animal. Group ll rabbits were almost died within 2-4 weeks after stent placement. In the comparison of the pathohistologic findings between group I and ll , the tissue necrosis at the sites of stent placement in trachea is more severe & extensive in group ll than that of group l, and also reactive fibroblastic reaction is more severe in group ll. So the thickness of the tracheal wall in group ll is two or three times thicker than that of group l which seems to be a result of reactive fibrosis. So, A & A' type stent is safer than B & B' type stent in normal rabbit trachea. It is advisable to use stents in diameter under 2 times to tracheal width and the complication of stent placement in trachea may be reduced for appropriate reconstruction of stenotic lesion.

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