• Stroke · Nov 1990

    Correlates of middle cerebral artery blood velocity in the elderly.

    • S F Ameriso, A Paganini-Hill, H J Meiselman, and M Fisher.
    • Department of Neurology, University of Southern California School of Medicine, Los Angeles 90033.
    • Stroke. 1990 Nov 1; 21 (11): 1579-83.

    AbstractWe analyzed the association between hematologic factors and blood velocity of the middle cerebral artery in 42 healthy ambulatory subjects aged 63-86 years. We found a significant inverse association between mean velocity and both hematocrit (r = -0.37, p less than 0.02) and fibrinogen concentration (r = -0.42, p less than 0.005). These two variables are independently associated with velocity and together explain 29% of the variance in mean velocity. Both hematocrit and fibrinogen concentration should be considered in the interpretation of transcranial Doppler findings in this population.

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