Jeong In cheol, Finkelstein Joseph
Chronic Disease Informatics Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Stud Health Technol Inform. 2013;192:1198.
Continuous blood pressure (BP) monitoring during exercise is an important means to ensure exercise safety, particularly in seniors and individuals with various comorbidities. Use of automated BP monitors is limited during exercise. Pulse transit time (PTT) has been suggested for non-invasive BP monitoring however its implementation into clinical practice was hampered by lack of non-expensive practical solutions. The goal of this project was to introduce and to test a practical low-cost solution for using PTT to estimate BP during exercise. Our approach was based on obtaining 3 calibration points during different levels of exertion for each subject and utilizing the resulting individualized BP estimation equitation for patient-specific monitoring of BP during home-based exercise. Evaluation of the proposed approach showed that the mean difference between reference systolic BP (SBP) and estimated systolic BP was 0.0 mmHg. The optimal way to calculate PTT has been established by comparison of three main characteristic points used to derive PTT.
运动期间连续血压监测是确保运动安全的重要手段，尤其对于老年人和患有各种合并症的个体。运动期间自动血压监测仪的使用受到限制。脉搏传输时间（PTT）已被建议用于无创血压监测，然而，由于缺乏低成本的实用解决方案，其在临床实践中的应用受到阻碍。本项目的目标是引入并测试一种实用的低成本解决方案，用于在运动期间使用PTT估计血压。我们的方法是在每个受试者的不同运动水平下获得3个校准点，并利用由此产生的个体化血压估计方程，在家中运动期间对患者进行特定的血压监测。对所提出方法的评估表明，参考收缩压（SBP）与估计收缩压之间的平均差异为0.0 mmHg。通过比较用于推导PTT的三个主要特征点，确定了计算PTT的最佳方法。
