生物阻抗法评估肺循环血流调节功能的研究
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1.沈阳工业大学电气工程学院沈阳110870; 2.营口理工学院电气工程学院营口115014

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TH789

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国家自然科学基金(52077143)项目资助


Research on the bioelectrical impedance method for assessing the regulation of pulmonary circulation blood flow
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1.School of Electrical Engineering, Shenyang University of Technology, Shenyang 110870, China; 2.College of Electrical Engineering, Yingkou Institute of Technology, Yingkou 115014, China

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    摘要:

    右心灌注情况对肺循环的正常功能至关重要。通过评估右心灌注可以判断肺循环健康状态。肺循环血流调节是指肺动脉在右心室血流灌注变化期间,为维持适当的右心室-肺动脉耦合关系而进行的肺循环供血调节过程。旨在利用生物阻抗技术研究右心灌注期间心血管血流调节情况,评估肺循环过程中动脉弹性和血流阻力参数的变化。基于生物阻抗技术检测区域血流,利用肺血流阻抗舒张波波幅与重搏波深度的比值、最大收缩波变化速率表征动脉弹性参数和血流阻力参数。最后探讨急性运动条件下的肺血流阻抗参数变化,并与静息条件下的肺血流阻抗参数变化进行对比。相对于静息状态,急性运动条件下动脉血管弹性和血流阻力变化比分别为77.78%、11.46%,统计学分析显示两个参数在运动前后均存在显著性差异(P<0.001)。生物阻抗技术可以有效检测肺循环过程中肺动脉血流调节变化,通过分析肺血流阻抗图量化动脉血管弹性与血流阻力指标,实现右心室-肺动脉耦合血流调节功能的评估。生物阻抗技术可以有效检测肺循环过程中右心室血流调节变化,通过分析肺血流阻抗图量化弹性与阻力指标,实现对血流调节功能的评估。该方法为无创肺循环活动生物阻抗检测奠定基础。

    Abstract:

    The right heart perfusion is essential for the normal functioning of the pulmonary circulation. Assessing right heart perfusion provides critical insights into the health status of the pulmonary circulation. Pulmonary blood flow regulation refers to the adjustment of blood supply by the pulmonary artery during changes in right ventricular perfusion to maintain proper right ventricular-pulmonary artery coupling. This study aims to investigate cardiovascular blood flow regulation during right ventricular perfusion using bioimpedance technology and to assess changes in arterial elasticity and flow resistance parameters in the pulmonary circulation. Regional blood flow is assessed using bioimpedance technology, characterizing arterial elasticity and flow resistance parameters through the ratio of diastolic wave amplitude to the depth of the rebound wave and the rate of change of the maximum systolic wave. The discussion focuses on changes in pulmonary blood flow impedance parameters under acute exercise conditions, comparing them with changes in pulmonary blood flow impedance parameters at rest. Compared with the resting state, the changes in arterial elasticity and flow resistance under acute exercise conditions were 77.78% and 11.46%, respectively. Statistical analysis revealed significant differences in both parameters before and after exercise (P < 0.001). Bioimpedance technology effectively detects changes in pulmonary arterial blood flow regulation during pulmonary circulation. By analyzing the pulmonary blood flow impedance waveform to quantify arterial vascular elasticity and flow resistance, facilitating the assessment of right ventricular-pulmonary artery coupling and flow regulation. Bioimpedance technology effectively detects changes in right ventricular flow regulation during pulmonary circulation. By analyzing the pulmonary blood flow impedance graph to quantify the indices of elasticity and resistance, the function of blood flow regulation can be assessed. This method establishes a foundation for non-invasive bioimpedance assessment of pulmonary circulation dynamics.

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贾静,杜强,柯丽,任自艳,位俊梅.生物阻抗法评估肺循环血流调节功能的研究[J].仪器仪表学报,2025,46(2):165-173

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  • 在线发布日期: 2025-04-28
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