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首页> 外文会议>2016 IEEE Healthcare Innovation Point-Of-Care Technologies Conference >Assessment of pulse transit/arrival time as noninvasive blood pressure predictors in finger and earlobe sites
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Assessment of pulse transit/arrival time as noninvasive blood pressure predictors in finger and earlobe sites

机译：评估脉冲传播/到达时间作为手指和耳垂部位的无创血压预测指标

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Development of wearable medical devices to measure noninvasive blood pressure (NIBP) has recently been evolving at finger/wrist and earlobe locations. The study investigates the predictive power of pulse transit time (PTT) and pulse arrival time (PAT) measured at finger and earlobe sites for BP measurement during two unique physiological interventions: handgrip test (HGT) and modified Valsalva test (mVT). Single-lead electrocardiogram, impedance cardiogram, infrared photoplethysmogram (PPG) from finger and earlobe, and CNAP® NIBP were simultaneously acquired in 14 heathy subjects (39±11 years); beat-to-beat BP, PAT and PTT were extracted; linear regression, correlation and statistical analyses were carried out. The results show that both the BP interventions caused significant increase (P<;0.05) in diastolic blood pressure (DBP), but concurrent significant decrease (P<;0.01) in PTT was observed only during mVT in both finger and earlobe sites. On the other hand, PAT did not change significantly during both the BP interventions. PTT showed highest correlation (R2) of 0.47±0.26 and negative regression slope of - 0.39±0.31 with DBP in finger during mVT compared to earlobe. Thus, the predictive power of PTT for NIBP monitoring vary broadly in distinct BP regulation mechanisms, and found to be moderate in finger site and relatively weak in earlobe site.
机译：用于测量无创血压（NIBP）的可穿戴医疗设备的开发最近在手指/手腕和耳垂位置不断发展。这项研究调查了在两种独特的生理干预措施中，在手指和耳垂部位测量的脉搏传播时间（PTT）和脉搏到达时间（PAT）的预测能力：手握力测试（HGT）和改良的Valsalva测试（mVT）。同时从14个健康受试者（39±11岁）中获得了手指和耳垂的单导联心电图，阻抗心电图，红外光体积描记图（PPG）和CNAP®NIBP。提取了逐搏BP，PAT和PTT；进行线性回归，相关和统计分析。结果表明，两种BP干预均导致舒张压（DBP）显着升高（P <; 0.05），但仅在手指和耳垂部位的mVT期间才观察到PTT的同时显着降低（P <; 0.01）。另一方面，在两次BP干预期间，PAT均未发生明显变化。与耳垂相比，PTT显示mVT期间手指与DBP的最高相关性（R2）为0.47±0.26，负回归斜率为-0.39±0.31。因此，PTT对NIBP监测的预测能力在不同的BP调节机制中差异很大，并且在手指部位适中，在耳垂部位相对较弱。

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