一种利用激光位移传感器测量血液表面距离的静脉血容量监测新方法。

IF 1.3 4区 医学 Q4 ENGINEERING, BIOMEDICAL
Shinichi Fukuhara, Ken-Ichiro Yamamoto
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引用次数: 0

摘要

在体外循环(CPB)过程中,静脉储血池(VR)对安全的血容量调节至关重要。目前,vr中的血容量测量严重依赖于视觉检测,这限制了其准确性和响应性。本文提出了一种利用激光位移传感器进行vr血液表面距离变化检测的方法,该方法精度高,操作简单。它能够精确、非接触、实时测量血液表面的位移和位置分析。硬壳vr在血容量和血表面高度之间保持恒定的关系。因此,我们测量了血液表面的距离和传感器之间的距离。本研究的结果表明,血容量与从血液表面到传感器的距离相关,显示出每个VR特有的清晰的“血表面距离-体积特征”曲线。实验结果证实,即使在不同的条件下,如血液稀释和不同的环境光,也具有出色的再现性和低变异性。此外,CPB期间的血容量动态行为可以通过与理论预测很好地一致的测量来捕获。我们的研究结果证实了基于血表面距离测量的血容量估计的潜力,使其成为CPB期间实时血容量监测的有希望的替代方案。将这种方法集成到CPB系统中可以提高安全性,防止空气栓塞,改善流体管理,为更精确和自动化的循环血容量控制铺平道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A novel blood volume monitoring approach in a venous reservoir using a laser displacement sensor for blood surface distance measurement.

A venous reservoir (VR) is crucial for safe blood volume regulation during cardiopulmonary bypass (CPB) procedures. Currently, blood volume measurement in VRs relies heavily on visual inspection, which limits its accuracy and responsiveness. In this paper, a method that leverages a laser displacement sensor for blood surface distance change detection in VRs with high accuracy and simplicity is proposed. It enables precise, non-contact, real-time measurements for displacement and position analysis of blood surface. Hard-shell VRs maintain a constant relationship between blood volume and blood surface height. Therefore, we measured the blood surface distance and the distance between the sensors. The findings of this study demonstrate that blood volume correlates with the distance measured from the blood surface to the sensor, showing clear "blood surface distance-volume characteristic" curves specific to each VR. Experimental results confirm excellent reproducibility and low variability, even under different conditions, such as blood dilution and varying ambient light. In addition, the blood volume dynamic behavior during CPB can be captured with measurements that are in good agreement with theoretical predictions. Our findings confirm the potential of blood volume estimation based on blood surface distance measurements, making it a promising alternative for real-time blood volume monitoring during CPB. Integrating this method into CPB systems could improve safety, prevent air embolisms, and improve fluid management, paving the way for more precise and automated circulating blood volume control.

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来源期刊
Journal of Artificial Organs
Journal of Artificial Organs 医学-工程:生物医学
CiteScore
2.80
自引率
15.40%
发文量
68
审稿时长
6-12 weeks
期刊介绍: The aim of the Journal of Artificial Organs is to introduce to colleagues worldwide a broad spectrum of important new achievements in the field of artificial organs, ranging from fundamental research to clinical applications. The scope of the Journal of Artificial Organs encompasses but is not restricted to blood purification, cardiovascular intervention, biomaterials, and artificial metabolic organs. Additionally, the journal will cover technical and industrial innovations. Membership in the Japanese Society for Artificial Organs is not a prerequisite for submission.
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