Mazhbiu B I, Pogodin A S
Biull Eksp Biol Med. 1979 Nov;88(11):520-2.
In experiments on anaesthetized cats with intact chest regional blood volume and flow in the lungs at horizontal and vertical body positions and under vagus and sympathetic nerve stimulation were studied using regional lung electroplethysmography. The regions of the lungs bearing more significant hydrostatic and hemodynamic load turn more labile to neurogen stimuli. The parasympathetic vasomotor reaction of the basal lung regions increases while the apical region reaction decreases at a vertical body position. The results obtained suggest the occurrence of regionally differentiated mechanisms of vasomotor control in the pulmonary circulation, directed to compensation of postural changes in pulmonary hemodynamics.
在对麻醉猫进行的实验中，利用局部肺电阻抗容积描记法研究了完整胸腔在水平和垂直体位以及迷走神经和交感神经刺激下肺内局部血容量和血流情况。承受更大静水压力和血流动力学负荷的肺区域对神经源性刺激更为敏感。在垂直体位时，肺底部区域的副交感舒血管反应增强，而肺尖部区域的反应减弱。所获结果表明，肺循环中存在血管运动控制的区域分化机制，旨在补偿肺血流动力学的体位变化。
