Bailliart O, Bonnin P, Normand H, Marotte H, Vargas E
Laboratoire de physiologie, UER Biomedicale des Sts-Peres, Paris, France.
Aviat Space Environ Med. 1990 Dec;61(12):1102-6.
The aim of the work was to estimate the possible changes induced by high altitude in the distribution of the common carotid arterial blood flow towards the internal and external carotid arteries. Common carotid blood flow and internal and external blood velocities were measured in 20 lowlanders at sea level, in 5 of them over a 3-week period at 3800 m and in 20 permanent residents of this high altitude. Internal and external blood velocities were recorded with a continuous Doppler and blood flow was recorded by range-gated Doppler velocimeter. Common carotid blood flow was 15% higher in all subjects exposed to high altitude due to a lowering in downstream vascular resistance since systemic blood pressure did not change at high altitude. The increase of blood flow in the common carotid was the result of a rise mainly in the external carotid blood flow.
这项研究的目的是评估高海拔对颈总动脉流向颈内动脉和颈外动脉的血流分布可能产生的变化。在20名海平面的低海拔居民、其中5人在海拔3800米处为期3周以及20名该高海拔地区的常住居民中测量了颈总动脉血流以及颈内和颈外血流速度。使用连续多普勒记录颈内和颈外血流速度，并用距离选通多普勒测速仪记录血流。由于高海拔时全身血压未改变，下游血管阻力降低，所有暴露于高海拔的受试者颈总动脉血流均高出15%。颈总动脉血流增加主要是颈外动脉血流增加的结果。
