What question did this study set out to answer?

To assess the correlation between blood flow velocity changes in cerebral arteries during carotid compression and cerebrovascular resistance.

July 1, 1981Stroke

Evaluation of cross-circulation through circle of Willis using an ultrasonic Doppler technique. Part II. Comparison between blood flow velocity by ultrasonic Doppler flowmetry and cerebrovascular resistance.

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Why the study?

Does ultrasonic Doppler flowmetry correlate with cerebrovascular resistance during carotid compression in patients with and without ischemic cerebrovascular disease?

Population

15 patients (11 with chronic ischemic cerebrovascular disease and 4 without organic brain lesions)

Design

Cross-sectional

Authors

SYS YonedaKansai Medical University TNT NukadaFukushima Medical University KKKazufumi KimuraDorn Research Institute

Discussion

Member takes

Implication

May support subgroup-specific Doppler utility for CVR assessment; leaves open broad correlation and clinical adoption pending validation.

Key Points

To assess the correlation between blood flow velocity changes in cerebral arteries during carotid compression and cerebrovascular resistance.
Evaluated 15 individuals, comprising 11 patients with chronic ischemic cerebrovascular disease and 4 controls without organic brain lesions.
Measured blood flow velocity in internal carotid and vertebral arteries using ultrasonic Doppler flowmetry during carotid compression, calculating cerebrovascular resistance from cerebral blood flow and arterial pressure.
No linear correlation was observed between cerebrovascular resistance and the increase in arterial blood flow velocity across all participants.
Blood flow velocity increases during compression were significantly higher in patients with low cerebrovascular resistance compared to those with high cerebrovascular resistance.

Structured PICO

Does ultrasonic Doppler flowmetry correlate with cerebrovascular resistance during carotid compression in patients with and without ischemic cerebrovascular disease?

Population

15 patients (11 with chronic ischemic cerebrovascular disease and 4 without organic brain lesions)

Intervention

Measurement of blood flow velocity by ultrasonic Doppler flowmeter during carotid compression

Outcome

Correlation between the increase in velocity of blood flow in internal carotid and vertebral arteries and cerebrovascular resistance (CVR)surrogate

Ultrasonic Doppler flowmetry during carotid compression may be a useful non-invasive method to detect changes in cerebral vascular resistance.

Cite This Study

Yoneda et al. (1981) studied this question.

synapsesocial.com/papers/6a87ee21f762332bf8fe8e55 https://doi.org/10.1161/01.str.12.4.484

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Evaluation of cross-circulation through circle of Willis using an ultrasonic Doppler technique. Part II. Comparison between blood flow velocity by ultrasonic Doppler flowmetry and cerebrovascular resistance.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Evaluation of cross-circulation through circle of Willis using an ultrasonic Doppler technique. Part II. Comparison between blood flow velocity by ultrasonic Doppler flowmetry and cerebrovascular resistance.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider