November 1, 1985Stroke
Pulsed Doppler: an evaluation of diameter, blood velocity and blood flow of the common carotid artery in patients with isolated unilateral stenosis of the internal carotid artery.
Key result
Common carotid artery blood flow on the involved side was significantly reduced compared to the opposite side and negatively correlated with stenosis severity (r=-0.78, p<0.001).
Why the study?
Does pulsed Doppler evaluation detect differences in diameter, blood velocity, and blood flow between the involved and opposite common carotid arteries in patients with isolated unilateral internal carotid artery stenosis?
Population
24 patients with isolated unilateral internal carotid artery stenosis, without any other significant lesion…
Comparison
Pulsed Doppler system evaluation vs Opposite side
Design
Cross-sectional
Authors
Discussion
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Implication
May aid noninvasive flow assessment in unilateral stenosis; leaves open prospective validation for refining severity grading.
Study Design
Type
Observational (n=24)
Structured PICO
Does pulsed Doppler evaluation detect differences in diameter, blood velocity, and blood flow between the involved and opposite common carotid arteries in patients with isolated unilateral internal carotid artery stenosis?
P
Population
24 patients with isolated unilateral internal carotid artery stenosis without any other significant lesion of the carotid system.
E
Exposure
Pulsed Doppler system evaluation (adjustable range-gated system and double transducer probe)
C
Comparator
Opposite side (contralateral common carotid artery)
O
Outcome
Arterial diameter, blood velocity, and blood flow of the common carotid arterysurrogate
Main Result
Effect estimate: r = -0.78
p-value: p=<0.001
Pulsed Doppler evaluation can quantitatively detect reduced diameter, velocity, and flow in the common carotid artery ipsilateral to an isolated internal carotid artery stenosis, correlating with angiographic severity.
Cite This Study
Bénétos et al. (1985) conducted an observational in isolated unilateral internal carotid artery stenosis (n=24). Unilateral internal carotid artery stenosis vs. Opposite uninvolved side was evaluated on Arterial diameter, blood velocity and blood flow of the common carotid artery (r = -0.78, p=<0.001). Common carotid artery blood flow on the involved side was significantly reduced compared to the opposite side and negatively correlated with stenosis severity (r=-0.78, p<0.001).