Estimates of ventilation from body surface measurements in unrestrained subjects.
Estimates of ventilation from body surface measurements in unrestrained subjects.
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根据不受约束的受试者的体表测量估算通气量。
DOI：
10.1152/jappl.1986.61.3.1114
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Mead,J
中科院分区：
文献类型：
--
作者：
McCool,FD;Kelly,KB;Loring,SH;Greaves,IA;Mead,J
为了通过测量无约束受试者的体表运动来估计通气情况，我们测量了6名健康无约束受试者在各种运动过程中胸腔（RC）和腹部（AB）的线性尺寸和横截面积的变化。用磁力计测量头尾轴的RC和AB正位直径和腹长（轴向位移），用呼吸感应容积描记仪测量RC和AB横截面积。在口部用气测仪测量流量，并用电集成来测量体积。体积和体表测量采用多元线性回归分析。将轴向测量添加到RC和AB的正位尺寸或横截面积中，可以改善所有受试者对潮汐体积的估计（P < 0.01）。通过测量RC和AB的轴向位移和截面积，可以可靠地估计潮汐量，其值在实际通风的20%以内。我们的结论是，轴向位移的测量改善了对无约束受试者通气的估计。
To make estimates of ventilation from measurements of body surface movements in unrestrained subjects, we measured changes in linear dimensions and cross-sectional areas of the rib cage (RC) and abdomen (AB) of six healthy unrestrained subjects during a variety of maneuvers. RC and AB anteroposterior diameters and abdominal length in the cephalocaudal axis (axial displacement) were measured with magnetometers, and RC and AB cross-sectional areas were measured with a respiratory inductance plethysmograph. Flow was measured at the mouth with a pneumotachograph and integrated electrically to give volume. Volume and body surface measurements were analyzed by multiple linear regression. Addition of the axial measurements to either the anteroposterior dimensions or cross-sectional areas of RC and AB improved estimates of tidal volume in all subjects (P less than 0.01). With measurements of axial displacement and cross-sectional area of the RC and AB, tidal volume could be reliably estimated to within 20% of actual ventilation. We conclude that measurement of axial displacements improves estimates of ventilation in unrestrained subjects.