摘要
目的探讨经颅多普勒超声(TCD)检测单侧颈内动脉狭窄≥70%或闭塞患者颅内动脉侧支循环开放类型。方法比较51例单侧颈内动脉狭窄≥70%或闭塞患者双侧大脑中动脉(MCA)的收缩期峰值流速(PSV)、血管搏动指数(PI)。并分为无症状组9例、短暂性脑缺血发作(TIA)组14例及卒中组28例,经统计学分析颅内侧支循环类型与临床表现的相关性。结果①患侧PSVMCA和PIMCA明显低于健侧,分别为(66±21)cm/s、0.63±0.16与(138±54)cm/s、0.86±0.20,P=0.000。②无症状组及TIA组中,前、后交通动脉同时开放者占39.2%(20/51),卒中组单支开放或后交通动脉与颈内-外侧支同时开放者占29.4%(15/51),P=0.005。结论TCD对单侧颈内动脉闭塞性病变患者颅内血流动力学检测,可为临床提供侧支循环建立的评估依据。
Objective To explore the patient types of intracranial collateral circulation in patients with unilateral internal carotid arterial stenosis ≥70% or occlusion with transcranial Doppler （TCD） ultrasonography. Methods Fifty-one patients with unilateral internal carotid arterial stenosis or occlusion, whose peak systolic velocity （PSV） and pulsatility index （PI） of bilateral middle cerebral arteries （MCAs） were compared. The patients were divided into asymptomatic （n = 9 ）, transient ischemic attack （n = 14） and stroke （n = 28） groups. The correlation of the types of intracranial collateral circulation was analyzed with statistics. Results PSVMCA and PIMCA in the affected sides were significantly lower than those at the unaffected sides in all patients, they were 66 ± 21cm/s, 0. 63 ± 0. 16, and 138 ± 54 cm/s, 0. 86 ± 0. 20, respectively （ P = 0. 000）. The patients with both anterior and posterior communicating arteries patency were 39. 2% （20/51 ） in asymptomatic and TIA groups; the patients with monobranch patency or both posterior communicating artery and lateral branch of internal carotid patency were 29.4% （ 15/51 ） in stroke group （P = 0. 005 ）. Conclusion The intracranial hemodynamic detection with TCD in patients with severe unilateral internal carotid artery stenosis or occlusion may accurately evaluate the establishment of intracranial collateral circulation, and reflect the degrees of low perfusion pressure.
出处
《中国脑血管病杂志》
CAS
2006年第6期254-256,共3页
Chinese Journal of Cerebrovascular Diseases
关键词
超声检查
多普勒
经颅
颈动脉狭窄
侧支循环
Uhrasonography, Doppler, transcranial
Internal carotid
Stenosis
Collateral circula- tion
