Effects of body position change on thoracoabdominal motion.
Effects of body position change on thoracoabdominal motion.
复制标题
体位变化对胸腹运动的影响。
DOI：
10.1152/jappl.1978.45.4.581
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发表时间：
1978
期刊：
影响因子：
--
通讯作者：
J. Sharp
中科院分区：
文献类型：
--
作者：
V. P. Vellody;M. Nassery;W. Druz;J. Sharp
使用线性呼吸磁力计，在潮式呼吸期间连续测量功能残余容量下的胸腔和腹部的前后和侧向直径。对 25 名呼吸系统正常的受试者进行了坐位、仰卧位、侧卧位和俯卧位的研究。当受试者从坐位变为仰卧位时，胸腔和腹部的前后径减小，而侧径增大。胸腔的前后和侧向潮汐偏移均减少；腹部的那些增加了。当受试者从仰卧位转为侧卧位时，前后径均增加，侧径均减小。这与侧向偏移的增加和腹部前后偏移的减少有关。俯卧位的直径和潮汐偏移与仰卧位的类似。直径的变化可以用重力效应来解释。伴随体位变化的潮汐偏移的差异可能与以下因素有关：1）呼吸肌力分布的差异，2）各种吸气肌的活动或机械优势的差异，以及3）胸腔和腹部部分的局部顺应性变化。
With a linearized respiratory magnetometer, measurements of anteroposterior and lateral diameters of both the rib cage and the abdomen were made at functional residual capacity and continuously during tidal breathing. Twenty-five subjects with normal respiratory systems were studied in the sitting, supine, lateral decubitus, and prone body positions. When subjects changed from sitting to supine position anteroposterior diameters of both rib cage and abdomen decreased while their lateral diameters increased. Both anteroposterior and lateral tidal excursions of the rib cage decreased; those of the abdomen increased. When subjects turned from supine to lateral decubitus position both anteroposterior diameters increased and the lateral diameters decreased. This was associated with an increase in both lateral excursions and a decrease in the abdominal anteroposterior excursions. Diameters and tidal excursions in the prone position resembled those in the supine position. Diameter changes could be explained by gravitational effects. Differences in tidal excursions accompanying body position change were probably related to 1) differences in the distribution of respiratory muscle force, 2) differences in the activity or mechanical advantage of various inspiratory muscles, and 3) local compliance changes in parts of the rib cage and abdomen.