Accuracy of some algorithms to determine the oscillometric mean arterial pressure: a theoretical study
Accuracy of some algorithms to determine the oscillometric mean arterial pressure: a theoretical study
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DOI：
10.1097/mbp.0b013e32835d12f6
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发表时间：
2013-02-01
影响因子：
1.3
通讯作者：
Kivastik, Jana
中科院分区：
文献类型：
--
作者：
Raamat, Rein;Talts, Jaak;Kivastik, Jana
目的比较不同算法计算动脉平均压的准确性，方法采用计算机模型，比较最大振幅算法、33%和40%公式法以及两种基于振荡形状的算法的准确性。我们研究了在何种程度上测试算法的影响，在四个情感因素的变化：脉压，动脉压脉冲形状指数，和两个形状指数（对称性和陡度）的动脉袖带压力/容量的关系。结果基于振荡形状的算法的准确性高于基于振荡幅度的算法的准确性。与最大幅度算法相比，基于振荡平均形状指数的确定的误差范围几乎窄2-3倍。建模结果表明，平均动脉压的变化所造成的不同形状的动脉压波形不能使用基于振荡幅度的算法测量，而这些变化可以有效地确定使用基于振荡形状的algorithm.Conclusion最大幅度算法估计的平均动脉压的准确性相对较低。它的误差范围甚至比用33%或40%公式从动脉血压计测量的收缩压和舒张压计算的估计值的误差范围更大。通过应用基于振荡形状的算法可以实现相当高的精度。血压监测18：50-56（C）2013年沃尔特斯·克鲁沃健康垂直酒吧利平科特威廉姆斯&威尔金斯。血压监测2013，18：50-56
Objective To compare different algorithms to determine the oscillometric mean arterial pressure.Methods Using a computer-based model, the accuracy of five algorithms was studied: maximum amplitude algorithm, 33 and 40% formulas calculating the mean arterial pressure from oscillometrically measured systolic and diastolic pressures, and two oscillation shape-based algorithms. We examined to which extent the tested algorithms were influenced by variations in four affective factors: pulse pressure, arterial pressure pulse shape index, and two shape indices (symmetry and steepness) of the artery-cuff pressure/volume relationship. Different ranges of variation of affecting factors were applied.Results The accuracy of the oscillation shape-based algorithms was found to be higher than the accuracy of the oscillation amplitude-based algorithms. The oscillation mean shape index-based determination had an almost 2-3 times narrower error range compared with the maximum amplitude algorithm. Modeling showed that the mean arterial pressure changes resulting from the varying shape of the arterial pressure waveform cannot be measured using the oscillation amplitude-based algorithms, whereas these changes can be determined effectively using the oscillation shape-based algorithms.Conclusion The maximum amplitude algorithm has a relatively low accuracy for the estimation of the mean arterial pressure. Its error range is even larger than that of estimates calculated by the 33 or 40% formulas from the oscillometrically measured systolic and diastolic blood pressures. A considerably higher accuracy can be achieved by applying the oscillation shape-based algorithms. Blood Press Monit 18: 50-56 (C) 2013 Wolters Kluwer Health vertical bar Lippincott Williams & Wilkins. Blood Pressure Monitoring 2013, 18: 50-56