Validation of respiratory inductive plethysmography using different calibration procedures.
Validation of respiratory inductive plethysmography using different calibration procedures.
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使用不同校准程序验证呼吸感应体积描记法。
DOI：
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发表时间：
1982
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通讯作者：
M. Sackner
中科院分区：
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作者：
T. Chadha;H. Watson;S. Birch;G. Jenouri;A. Schneider;M. A. Cohn;M. Sackner
我们设计了一种新的校准程序[最小二乘法（LSQ）]呼吸感应体积描记法（RIP），并将其与我们以前报道的分析2个体位数据的联立方程法（SEQ）和Stagg及其同事使用单个体位中单个呼吸分析的方法进行了比较。对20例正常人分别在站立位、仰卧位、坐位、俯卧位、半卧位、右侧卧位和左侧卧位下的RIP值与同步肺量测定法（SP）值进行比较。LSQ给出了最准确的结果，紧随其后的是SEQ。此外，还将LSQ与仰卧位（ISV-STD）和站立位（ISV-STD）的等容角动作（ISV）校准程序进行了比较。10名正常受试者中的每一个在直立和STD姿势下以250、750和1,250 ml的潮气量呼吸。在通过LSQ方法获得的值中，93%在SP和STD位置的+/- 10%范围内。在不改变进行校准的姿势的情况下，83%的ISV-STD值和90%的ISV-STD值在SP的+/- 10%范围内。当体位改变时，65%的ISV-STD值和38%的ISV-STD值在SP的+/- 10%范围内。使用LSQ，当体位从校准位置改变时，45%的体位和STD位置的等容角在45 +/- 3度范围内; 40%的ISV-体位和60%的ISV-STD等容角在45 +/- 3度范围内。估计胸腔和腹腔室的贡献率。LSQ在站立姿势下与ISV相当，但在仰卧姿势下的胸腔贡献值通常低于ISV。就受试者表现的准确性和易用性而言，呼吸感应体积描记法的最佳校准程序是最小二乘校准程序。
We devised a new calibration procedure [least squares method (LSQ)] for respiratory inductive plethysmography (RIP) and compared it with our previously reported simultaneous equation method (SEQ) of analyzing data in 2 body positions and with the method of Stagg and associates using the analysis of individual breaths in a single body position. The values from RIP were compared with simultaneous spirometry (SP) in 20 normal subjects placed in the standing (STD), supine (SUP), sitting, prone, semi-recumbent, right lateral decubitus, and left lateral decubitus postures. The LSQ gave the most accurate results followed closely by SEQ. In addition, LSQ was compared with the isovolume angle maneuver (ISV) calibration procedure in supine (ISV-SUP) and standing (ISV-STD) postures. Each of the 10 normal subjects breathed at tidal volumes of 250, 750, and 1,250 ml in the SUP and STD postures. Of the values obtained by the LSQ method, 93% were within +/- 10% of SP in SUP and STD positions. Without a change in the posture in which the calibration was made, 83% of values with ISV-SUP and 90% of values with ISV-STD were within +/- 10% of SP. When body position was changed, 65% of the values obtained with ISV-SUP and 38% of the values obtained with ISV-STD were within +/- 10% of SP. With the LSQ, 45% of isovolume angles in SUP and STD position were within 45 +/- 3 degrees; 40% of isovolume angles with ISV-SUP and 60% with ISV-STD were within 45 +/- 3 degrees when body position was changed from position calibrated. In estimating fractional contribution of rib cage and abdominal compartments. LSQ was comparable to ISV in the standing posture but generally gave lesser values for the rib cage contribution in the supine posture than ISV. The optimal calibration procedure for respiratory inductive plethysmography in terms of accuracy and ease of subject performance is the least squares calibration procedure.