We found no associations between vasomotor reactivity and risk of stroke.Ĭonclusions- Risk of stroke increased strongly with increasing middle cerebral artery flow velocity as measured with transcranial Doppler in the general population. The side of highest flow velocity was not associated with the side of stroke. These estimates increased 10% to 26% when only ischemic strokes were included. Results- Risk of stroke (n=122) and ischemic stroke (n=89) increased with increasing middle cerebral artery flow velocity when comparing the tertile with highest velocity to the tertile with lowest velocity, the hazard ratio was 1.74 (95% CI: 1.09 to 2.77) for the association between mean flow velocity and stroke, 1.63 (95% CI: 1.03 to 2.58) for end diastolic flow velocity and stroke, and 1.33 (95% CI: 0.86 to 2.08) for peak systolic flow velocity and stroke. We calculated hazard ratios for the association between hemodynamic parameters and risk of stroke using Cox proportional hazards models with adjustment for age, sex, systolic blood pressure, antihypertensive drug use, diabetes mellitus, ever smoking, current smoking, carotid intima media thickness, and carotid distensibility.
#Transcranial doppler free#
All participants, who at baseline were free from previous stroke, were subsequently followed for occurrence of stroke (average follow-up time 5.1 years). Methods- At baseline, we assessed mean flow velocity, peak systolic flow velocity, end diastolic flow velocity, and vasomotor reactivity with transcranial Doppler in 2022 Rotterdam Study participants aged 61 years and over in both middle cerebral arteries. Customer Service and Ordering Informationīackground and Purpose- We explored the association between transcranial Doppler hemodynamic parameters and the risk of stroke in the general population.
Stroke: Vascular and Interventional Neurology.Journal of the American Heart Association (JAHA).
Circ: Cardiovascular Quality & Outcomes.Arteriosclerosis, Thrombosis, and Vascular Biology (ATVB).
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