Noninvasive cardiac output measurement in orthostasis: pulse contour analysis compared with acetylene rebreathing.
Noninvasive cardiac output measurement in orthostasis: pulse contour analysis compared with acetylene rebreathing.
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直立状态下的无创心输出量测量：脉搏轮廓分析与乙炔再呼吸的比较。
DOI：
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发表时间：
1999
影响因子：
3.3
通讯作者：
J. M. Karemaker
中科院分区：
文献类型：
--
作者：
W. Stok;R. Stringer;J. M. Karemaker
我们使用传输线模型（K. H. Wesseling， B. De Wit， J. a . P. Weber和N. T. Smith），通过脉冲轮廓分析（CO(pc)）测试了不同体位无创心输出量（CO）测量的可靠性。放置心功能杂志。物理5，补品。Ii: 16-52, 1983)。采用乙炔再呼吸法（CO(rebr)）作为参考方法。12名受试者（年龄21-34岁）：1)6名受试者在站立和6度头向下倾斜（HDT）姿势时测量CO（rebr）和CO(pc), 2) 6名受试者在倾斜台上测量30度HDT、仰卧、30度头向上倾斜（HUT）和70度HUT姿势时的CO。再呼吸时（接近）仰卧位的CO（rebr）与CO（pc）之比被用作CO（pc）测量的校准因子。校正后的CO(pc) （CO(cal sup)）始终高估了直立姿势的CO。直立姿势的一氧化碳下降被低估了大约50%。CO（cal sup）和CO（rebr）值在30度HDT位置没有差异。在不同的实验对象中，CO（rebr）与CO（pc）比值的变化随着姿势的改变而变化很大。因此，CO（pc）必须重新校准每个受试者在每个姿势。
We tested the reliability of noninvasive cardiac output (CO) measurement in different body positions by pulse contour analysis (CO(pc)) by using a transmission line model (K. H. Wesseling, B. De Wit, J. A. P. Weber, and N. T. Smith. Adv. Cardiol. Phys. 5, Suppl. II: 16-52, 1983). Acetylene rebreathing (CO(rebr)) was used as a reference method. Twelve subjects (age 21-34 yr) were studied: 1) six in whom CO(rebr) and CO(pc) were measured in the standing and 6 degrees head-down tilt (HDT) postures and 2) six in whom CO was measured in the 30 degrees HDT, supine, 30 degrees head up-tilt (HUT), and 70 degrees HUT postures on a tilt table. The CO(rebr)-to-CO(pc) ratio in (near) the supine position during rebreathing was used as the calibration factor for CO(pc) measurements. Calibrated CO(pc) (CO(cal sup)) consistently overestimated CO in the upright posture. The drop in CO with upright posture was underestimated by approximately 50%. CO(cal sup) and CO(rebr) values did not differ in the 30 degrees HDT position. Changes in the CO(rebr)-to-CO(pc) ratio are highly variable among subjects in response to a change in posture. Therefore, CO(pc) must be recalibrated for each subject in each posture.
肺血流量和组织体积：再呼吸估计方法的模型分析。
DOI：
10.1152/jappl.1983.55.1.205
发表时间：
1983
期刊：
Journal of applied physiology: respiratory, environmental and exercise physiology
影响因子：
--
作者：
Burma,GM;Saidel,GM
通讯作者：
Saidel,GM
平均压力对主动脉阻抗和全身动脉系统反射的影响。
DOI：
10.1152/ajpheart.1989.257.3.h969
发表时间：
1989
期刊：
The American journal of physiology
影响因子：
--
作者：
AlexanderJr,J;Burkhoff,D;Schipke,J;Sagawa,K
通讯作者：
Sagawa,K