Why does the blood flow from the aorta with lower pressure to the peripheral arteries with higher pressure?
REN Rong
REN Zheng
WANG Zhen
YANG Yong
CAO Tiesheng
Abstract：Multi-edition traditional physiology books indicate that because of the energy loss during the blood flowing from the aorta to the peripheral arteries, the blood pressure gets lower. However, lots of studies reveal that in normal physiological state, the farther the artery from the heart, the higher the arterial blood pressure is. It is unclear whether the peripheral blood pressure is still higher than that of the central artery under pathological conditions. The purpose of this study was to find out the change of the blood pressure of the aorta and peripheral radial arteries in patients with cardiovascular disease. The blood pressure of the aorta and peripheral radial arteries in 43 patients with coronary heart disease were measured by heart puncture and the mean value was calculated. The systolic pressure of radial artery was significantly higher than that of the aorta in the same individual, and the difference was statistically significant (P＜0.000 1), while the diastolic pressure and mean arterial pressure did not change obviously (P＞0.05) in the same individual. Under physiological and pathological conditions, the systolic pressure and pulse pressure of the peripheral radial artery were significantly higher than those of the aorta in coronary heart disease patients without heart failure and peripheral vascular diseases. The Bernoulli equation may be the mechanism of this phenomenon.
Keywords：arterial blood pressurepulse wavefluidBernoulli equation
Publication Date：2018-01-01
Online Publishing Date：2026-08-26(First online date of this platform, not the publication date of the document)
Pages：3( 30-32 )