The Contralateral Variation of Peak Systolic Velocity in Common Carotid Arteries

左右兩側總頸動脈血流速的差異

10.6452/KJMS.199205.0277

吳重慶(Chung-Chieng Wu)；童家淦(Jia-Kan Torng)

Doppler ultrasound ； common carotid artery ； contralateral variation

The Kaohsiung Journal of Medical Sciences

8卷5期（1992 / 05 / 01）

277 - 279

英文

In order to evaluate the contralateral variation of the peak systolic velocity (Vmax) in common carotid (CCAs), 9 clinically healthey persons (Group A), 11 patients with imple goiter (Group B) and 16 patients with diffuse toxic goiter (Graves’ disease, Group C) were referred for radionuclide scanning, duplex Doppler ultrasonography (duplex US) and determination of serum level of the thyroid homones (T3, T4, T3U) by radioimmunoassay. In group A, Vmax of right CCA was 98.8±34.5 cm/sec and that of left CCA was 113.4±28.9 cm/sec;; the left CCA had a higher blood flow velocity than the right one in normal subjects (p＜0.01). However, the left and right CCA Vmaxes did not significantly differ to each other in Group B (93.5±21.4 cm/sec vs 98.6±21.4 cm/sec, p＞0.05) and Group C (146.9±29.3 cm/sec vs 149.9±28.9 cm/sec, p＞0.05). We conclude that there is a contralateral difference of blood flow velocity of common carotid arteries with the left value higher than the rith one in healthy persons and this should be kept in mind in evaluation of thyroid functional and carotid arterial diseases.

In order to evaluate the contralateral variation of the peak systolic velocity (Vmax) in common carotid (CCAs), 9 clinically healthey persons (Group A), 11 patients with imple goiter (Group B) and 16 patients with diffuse toxic goiter (Graves’ disease, Group C) were referred for radionuclide scanning, duplex Doppler ultrasonography (duplex US) and determination of serum level of the thyroid homones (T3, T4, T3U) by radioimmunoassay. In group A, Vmax of right CCA was 98.8±34.5 cm/sec and that of left CCA was 113.4±28.9 cm/sec;; the left CCA had a higher blood flow velocity than the right one in normal subjects (p＜0.01). However, the left and right CCA Vmaxes did not significantly differ to each other in Group B (93.5±21.4 cm/sec vs 98.6±21.4 cm/sec, p＞0.05) and Group C (146.9±29.3 cm/sec vs 149.9±28.9 cm/sec, p＞0.05). We conclude that there is a contralateral difference of blood flow velocity of common carotid arteries with the left value higher than the rith one in healthy persons and this should be kept in mind in evaluation of thyroid functional and carotid arterial diseases.