Establishment of an objective evaluation method for the granulation tissue of pressure ulcers using echo and construction of an automatic discrimination system.

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K10765
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 58050:Fundamental of nursing-related
• Research Institution: University of Fukui
• Principal Investigator: Yotsuya Junko 福井大学, 学術研究院医学系部門, 教授 (10507370)
• Co-Investigator(Kenkyū-buntansha): 田邉 将之 熊本大学, 大学院先端科学研究部(工), 助教 (00613374)
• Project Period (FY): 2019-04-01 – 2024-03-31
• Keywords: 褥瘡 / 肉芽組織 / DESIGN-R2020 / 超音波診断装置 / 機械学習

Outline of Final Research Achievements

This study validated a method to quantitatively assess the condition of granulation tissue as benign or bad granulation using echo. First, the state of the granulation tissue was classified histopathologically and its characteristics were extracted. The granulation tissue was characterised by a low number of blood vessels, no fibrin matrix or angiogenesis on the surface of the granulation, and no myofibroblast layer in the underlying layer. For the echo evaluation, the images of the pressure sore area of interest were extracted from the echo images of the pressure sore and a histogram was calculated. The frequency of occurrence of each intensity value was normalised by image size and compared for each site. The results showed that there were significant differences in the mean and standard deviation of the histograms of the pressure ulcer and surrounding areas compared with normal areas in the echo images.

Free Research Field

高齢者看護

Academic Significance and Societal Importance of the Research Achievements

看護ケアにエコーを用いた褥瘡の肉芽組織状態の定量的評価を行うことで，早期に適切な治療，看護ケアが提供され，褥瘡の治癒遅延や停滞予防対策とともに看護ケアによる改善の評価に活用が期待できる．