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© 1985 Oxford University Press

research-article

RED BLOOD CELL VELOCITY CHANGES WITH AGE AND SEX IN THE COMMON CAROTID AND SUPRA-ORBITAL ARTERIES

J. J. BASKETT, Consultant Physician1,2,, R. R. LEWIS, Consultant Physician1,2,, M. G. BEASLEY, Research Fellow1 and R. G. GOSLING, Chairman1

Middlemore Hospital Otahuhu, Auckland 6, New Zealand
1Ultrasonic Angiology Research Group, Clinical Science Laboratories 17th Floor, Guy's Tower, Guy's Hospital London SE1 9RT
2Guy's Department of Geriatric and General Medicine, New Cross Hospital Avonley Road, London SE14 5ER

*Address Correspondence to: Dr R. R. Lewis, Guy's Department of Geriatric and General Medicine.

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<<0.001).

accepted in revised form September 29, 1984.


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