指数函数
顺从(心理学)
袖口
血压
曲线拟合
肱动脉
压力测量
脉冲压力
舒张期
生物医学工程
数学
控制理论(社会学)
数学分析
医学
物理
外科
计算机科学
内科学
热力学
统计
心理学
社会心理学
控制(管理)
人工智能
作者
Vishaal Dhamotharan,Anand Chandrasekhar,Hao‐Min Cheng,Chen‐Huan Chen,Shih‐Hsien Sung,Cederick Landry,Jin‐Oh Hahn,Aman Mahajan,Sanjeev G. Shroff,Ramakrishna Mukkamala
出处
期刊:IEEE Transactions on Biomedical Engineering
[Institute of Electrical and Electronics Engineers]
日期:2023-02-01
卷期号:70 (2): 715-722
被引量:2
标识
DOI:10.1109/tbme.2022.3201433
摘要
Oscillogram modeling is a powerful tool for understanding and advancing popular oscillometric blood pressure (BP) measurement. A reduced oscillogram model relating cuff pressure oscillation amplitude ( ∆O) to external cuff pressure of the artery ( Pe) is: [Formula: see text], where g(P) is the arterial compliance versus transmural pressure ( P) curve, Ps and Pd are systolic and diastolic BP, and k is the reciprocal of the cuff compliance. The objective was to determine an optimal functional form for the arterial compliance curve.Eight prospective, three-parameter functions of the brachial artery compliance curve were compared. The study data included oscillometric arm cuff pressure waveforms and invasive brachial BP from 122 patients covering a 20-120 mmHg pulse pressure range. The oscillogram measurements were constructed from the cuff pressure waveforms. Reduced oscillogram models, inputted with measured systolic and diastolic BP and each parametric brachial artery compliance curve function, were optimally fitted to the oscillogram measurements in the least squares sense.An exponential-linear function yielded as good or better model fits compared to the other functions, with errors of 7.9±0.3 and 5.1±0.2% for tail-trimmed and lower half-trimmed oscillogram measurements. Importantly, this function was also the most tractable mathematically.A three-parameter exponential-linear function is an optimal form for the arterial compliance curve in the reduced oscillogram model and may thus serve as the standard function for this model henceforth.The complete, reduced oscillogram model determined herein can potentially improve oscillometric BP measurement accuracy while advancing foundational knowledge.
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