内胸動脈露出に対するCUSAの応用 : 血管壁に与える病理組織学的検討

概要

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In order to evaluate the effect of CUSA on the vessel wall, the internal mammary arteries (IMAs) of the ten adult dogs were exposed with CUSA. Its amplitude was changed from 40% to 100% by 10% interval. Right IMAs of the seven dogs were gaken out just after the exposure and left IMAs of these dogs were taken out seven das lated. IMAs of the rest three dogs were examined three months later, and the pathohistological changes of the vessel walls were examined photomicroscopicaly. Results are the following. 1) In order to expose the vessles which can ve ligated and divided, 60% of amplitude had the best advantage in terms of shortening operation time. 2) Over 60% of amplitude, the adventitia suffered from hyaline degeneration and was dissected. 3) Over 70% of amplitude, small branches were amputated with the result of massive bledding. 4) Seven days later, the elastic fibers were torn outer one third of the media whose adventitia got degenerated. 5) In the specimen gotten three months later, degenerated adventitia had more collagen fibers and degenerated elastic fibers dropped out.Therefore, 50% of amplitude is supposed to be aplicated without any remarkable changes for the exposure of blood vessels which are to be anastomosed.
日本医療機器学会の論文
1987-12-01