Lin Chia-Hung, Chen Wei-Ling, Kan Chung-Dann, Wu Ming-Jui, Mai Yi-Chen
Department of Electrical Engineering , Kao-Yuan University , Kaohsiung City 82151 , Taiwan.
Department of Engineering and Maintenance , Kaohsiung Veterans General Hospital , Kaohsiung City 81362 , Taiwan.
Healthc Technol Lett. 2015 Nov 19;2(6):149-55. doi: 10.1049/htl.2015.0022. eCollection 2015 Dec.
Venous needle dislodgement (VND) is a life-threatening complication during haemodialysis (HD) treatment. When VND occurs, it only takes a few minutes for blood loss in an adult patient. According to the ANNA (American Nephrology Nurses' Association) VND survey reports, VND is a concerning issue for the nephrology nurses/staff and patients. To ensure HD care and an effective treatment environment, this Letter proposes a combination of fractional order shape index ratio (SIR) and fuzzy colour relation analysis (CRA) to detect VND. If the venous needle drops out, clinical examinations show that both heart pulses and pressure wave variations have a low correlation at the venous anatomic site. Therefore, fractional order SIR is used to quantify the differences in transverse vibration pressures (TVPs) between the normal condition and meter reading. Linear regression shows that the fractional order SIR has a high correlation with the TVP variation. Fuzzy CRA is designed in a simple and visual message manner to identify the risk levels. A worst-case study demonstrated that the proposed model can be used for VND detection in clinical applications.
静脉穿刺针移位（VND）是血液透析（HD）治疗期间一种危及生命的并发症。当发生VND时，成年患者失血只需几分钟。根据美国肾脏病护士协会（ANNA）的VND调查报告，VND是肾脏病护士/工作人员和患者关注的问题。为确保HD护理和有效的治疗环境，本信函提出结合分数阶形状指数比（SIR）和模糊颜色关系分析（CRA）来检测VND。如果静脉穿刺针脱落，临床检查表明，在静脉解剖部位，心脏脉搏和压力波变化的相关性都很低。因此，分数阶SIR用于量化正常状态与仪表读数之间横向振动压力（TVP）的差异。线性回归表明，分数阶SIR与TVP变化具有高度相关性。模糊CRA以简单直观的信息方式设计，以识别风险水平。一个最坏情况研究表明，所提出的模型可用于临床应用中的VND检测。
