Hemodynamic analysis of subclavian steal syndrome in patients undergoing transcranial doppler examination
10.3760/cma.j.issn.0254-9026.2013.08.020
- VernacularTitle:锁骨下动脉盗血综合征患者经颅多普勒检查的血流动力学分析
- Author:
Delin YU
;
Yu WANG
;
Wei LI
;
Zhijuan YANG
;
Qian YANG
- Publication Type:Journal Article
- Keywords:
Subclavian steal syndrome;
Hemodynamics;
Ultrasonography,doppler,transcranial
- From:
Chinese Journal of Geriatrics
2013;32(8):867-868
- CountryChina
- Language:Chinese
-
Abstract:
Objective To improve the theoretical basis for the typical hemodynamic changes in subclavian steal syndrome (SSS) patients underwent transcranial doppler (TCD) by detailed hemodynamic analysis.Methods Patients with SSS were examined by transcranial doppler and some patients performed tourniquet test.Flow spectrum,flow velocity and pulsatility index (PI) of vertebral artery,basilar artery and middle cerebral artery (MCA) were recorded.Results The flow spectrum of steal side vertebral artery showed that there were 14 cases with systolic notch,18 cases with systolic reverse flow and 3 cases with flow completely reversed.The flow spectrum showed high resistance spectrum in vertebral artery and basilar artery and ipsilateral basilar artery vortex or turbulence in 32 cases.The PI value was higher in contralateral vertebral artery and basilar artery than in anterior circulation (q =9.56,9.98,both P ＜ 0.01),and there was no difference between contralateral vertebral artery and basilar artery (q=0.416,P＞0.05).The tourniquet test were positive in all 22 patients.Conclusions TCD is a convenient,fast,accurate and non-invasive method for hemodynamic examination,which is the first choice for the diagnosis of SSS.
