PDF(Pubmed)
Abstract：
OBJECTIVE: Nasogastric tube use can lead to pressure injury. Some nasogastric tube securement devices (NG-SD) include hard plastic components. In the current study, we assessed the differences in strain profiles for two NG-SD, one with hard segments and one without hard segments, using finite element analysis (FEA) to measure strain and deformation occurring at the nasogastric tube-tissue interface.
METHODS: FEA in silico models of devices were based on device mechanical test data and clinically relevant placements. Peak strain values were determined by modelling different scenarios using Abaqus software whereby the tubing is moved during wear.
RESULTS: The modelling showed peak strains ranging from 52% to 434% for the two NG-SD depending on the tubing placement and device type. Peak strain was always higher for the hard plastic device. Tissue strain energy was a minimum of 133.8 mJ for the NG-SD with no hard parts and a maximum of 311.6 mJ for the NG-SD with hard parts.
CONCLUSIONS: This study provided evidence through in silico modelling that NG-SD without hard components may impart less strain and stress to tissues which may provide an option for tube securement that is less likely to cause medical device-related pressure injury.
METHODS: FEA in silico models of devices were based on device mechanical test data and clinically relevant placements. Peak strain values were determined by modelling different scenarios using Abaqus software whereby the tubing is moved during wear.
RESULTS: The modelling showed peak strains ranging from 52% to 434% for the two NG-SD depending on the tubing placement and device type. Peak strain was always higher for the hard plastic device. Tissue strain energy was a minimum of 133.8 mJ for the NG-SD with no hard parts and a maximum of 311.6 mJ for the NG-SD with hard parts.
CONCLUSIONS: This study provided evidence through in silico modelling that NG-SD without hard components may impart less strain and stress to tissues which may provide an option for tube securement that is less likely to cause medical device-related pressure injury.
摘要：
目的：使用鼻胃管会导致压力损伤。一些鼻胃管固定装置(NG-SD)包括硬塑料部件。在目前的研究中,我们评估了两种NG-SD的菌株分布差异，一个有硬段，一个没有硬段，使用有限元分析（FEA）来测量在鼻胃管-组织界面处发生的应变和变形。
方法：器械的计算机模拟模型FEA基于器械机械测试数据和临床相关位置。通过使用Abaqus软件对不同情况进行建模来确定峰值应变值，从而在磨损过程中移动管道。
结果：模型显示，两种NG-SD的峰值应变范围为52％至434％，具体取决于管道放置和设备类型。硬塑料装置的峰值应变总是较高。对于没有硬质部件的NG-SD，组织应变能最小为133.8mJ，对于具有硬质部件的NG-SD，最大为311.6mJ。
结论：这项研究通过计算机模拟提供了证据，表明没有硬成分的NG-SD可能会给组织带来较少的应变和应力，这可能为管道固定提供了一种选择，不太可能导致医疗设备相关的压力损伤。
方法：器械的计算机模拟模型FEA基于器械机械测试数据和临床相关位置。通过使用Abaqus软件对不同情况进行建模来确定峰值应变值，从而在磨损过程中移动管道。
结果：模型显示，两种NG-SD的峰值应变范围为52％至434％，具体取决于管道放置和设备类型。硬塑料装置的峰值应变总是较高。对于没有硬质部件的NG-SD，组织应变能最小为133.8mJ，对于具有硬质部件的NG-SD，最大为311.6mJ。
结论：这项研究通过计算机模拟提供了证据，表明没有硬成分的NG-SD可能会给组织带来较少的应变和应力，这可能为管道固定提供了一种选择，不太可能导致医疗设备相关的压力损伤。
