Tracheal size and shape: effects of change in intraluminal pressure.
Tracheal size and shape: effects of change in intraluminal pressure.
复制标题
气管大小和形状：腔内压力变化的影响。
DOI：
10.1148/radiology.149.1.6611936
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发表时间：
1983
期刊：
影响因子：
19.7
通讯作者：
Wohl,ME
中科院分区：
文献类型：
--
作者：
Griscom,NT;Wohl,ME
我们使用CT检查两名健康成人的气管功能残气量，首先在气管内压为+20-cm H2O，然后在-20-cm H2O。在气管的胸内部分，两种压力之间的横截面积变化不大。然而，在颈部的横截面积减少了约三分之一，从较高的压力到较低。该女性胸外气管的膜状后壁在较高压力下明显向后隆起，但在较低压力下被吸入气管腔。在较低压力下，两支气管分别缩短6%和12%，气管内容积减少17%~ 23%，表明正常成人气管胸外段的大小和形状对管腔内压力的适度变化有很强的反应。
We used CT to examine the tracheas of two healthy adults at functional residual capacity, first at an intratracheal pressure of +20-cm H2O and then at -20-cm H2O. In the intrathoracic portions of the tracheas there was little change in cross-sectional area between the two pressures. However, in the neck the cross-sectional areas decreased by about one third from the higher pressure to the lower. The membranous posterior wall of the woman's extrathoracic trachea bulged backwards strikingly at the higher pressure but was drawn well into the tracheal lumen at the lower pressure. The two tracheas were 6% and 12% shorter at the lower pressure, and the intratracheal volume was 17% to 23% less. The data show that the size and shape of the extrathoracic portion of the normal adult trachea are very responsive to moderate changes in intraluminal pressure.