Red blood cell velocity changes with age and sex in the common carotid and supra-orbital arteries.
Doppler-shifted ultrasound and spectral analysis were used to assess signals from the resting supra-orbital artery and the common carotid artery at the base of the neck of 658 (270 male, 388 female) asymptomatic subjects aged 5 to 90 years. The sonagrams obtained showed two peaks (A and B) during cardiac systole. The ratio of these peaks (A/B) decreased from 20 to 50 years and then levelled out. The male A/B ratios from both arteries were higher than those for the females between 20 and 50 years, and for the common carotid these differences were highly significant (P less than 0.001).
D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D001783:Blood Flow Velocity; D002339:Carotid Arteries; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D014465:Ultrasonics