Janbu T, Koss K S, Nesheim B I, Wesche J
Acta Physiol Scand. 1985 Jun;124(2):153-61. doi: 10.1111/j.1748-1716.1985.tb07647.x.
Blood velocities in the uterine arteries were measured during labour in humans, by means of the pulsed ultrasound Doppler velocity meter (UNIDOP). The uterine arteries were approached through the abdominal wall at the lateral border of the uterus and through the lateral vaginal fornix. At a depth of 0.5-1.5 cm from the lateral vaginal fornix there were three different arteries in each woman. One of these arteries had similar velocity spectra to the uterine artery as measured through the abdominal wall higher up along the uterus, and the velocities were in the same range. The mean velocities were high and the velocities in diastole were high compared to those in systole. During uterine contractions the velocities were reduced during diastole, reducing mean velocities by 20-40% as measured through the vagina and by 50-60% when measured higher up through the abdominal wall. A second artery, which we believe is a branch of the uterine artery traversing the myometrium, had lower mean velocities and a greater difference between systole and diastole. During contractions the velocities were reduced by 100%. A third artery, which we believe is the descending branch of the uterine artery, supplying the cervix and vagina, had the lowest mean velocities, with backflow during diastole. During contractions the velocities increased 100-140%.
在人类分娩过程中，通过脉冲超声多普勒速度仪（UNIDOP）测量子宫动脉的血流速度。子宫动脉可经子宫外侧缘的腹壁以及阴道侧穹窿进入。在距阴道侧穹窿0.5 - 1.5厘米深处，每位女性有三条不同的动脉。其中一条动脉的速度频谱与经子宫上方腹壁测量的子宫动脉相似，且速度处于相同范围。平均速度较高，与收缩期相比，舒张期速度也较高。在子宫收缩期间，舒张期速度降低，经阴道测量时平均速度降低20 - 40%，经腹壁上方测量时降低50 - 60%。第二条动脉，我们认为是穿过肌层的子宫动脉分支，其平均速度较低，收缩期与舒张期之间的差异较大。在收缩期间，速度降低100%。第三条动脉，我们认为是子宫动脉的下行分支，为宫颈和阴道供血，其平均速度最低，舒张期有逆流。在收缩期间，速度增加100 - 140%。
