Perleĭ V E, Egurnov N I, Dundukov N N
Patol Fiziol Eksp Ter. 1989 Mar-Apr(2):28-31.
The venous blood flow in the jugular, cubital, and inferior cava veins was studied in 7 healthy individuals and in 22 patients with chronic obstructive bronchitis by means of bichamber Doppler ultrasonography and direct measurement of venous pressure. The diameter of the veins, blood flow rate, and venous pressure were found to be greatly determined by the intrathoracic pressure variations during the respiration cycle. It is suggested that distention of the peripheral veins, which is the commonly accepted sign of right-ventricular insufficiency, in patients with drastic bronchial obstruction is a consequence of disturbed mechanics of respiration, namely, increase of intrathoracic pressure during expiration, which impairs the return of venous blood to the right parts of the heart.
通过双腔多普勒超声检查和直接测量静脉压，对7名健康个体和22名慢性阻塞性支气管炎患者的颈静脉、肘静脉和下腔静脉的静脉血流进行了研究。发现静脉直径、血流速度和静脉压在很大程度上取决于呼吸周期中胸内压的变化。提示在严重支气管阻塞患者中，外周静脉扩张这一公认的右心室功能不全征象是呼吸力学紊乱的结果，即呼气时胸内压升高，这会损害静脉血回流至心脏右侧。
