脑梗死患者颈动脉超声检查及血流阻力指数的临床意义

Cerebral infarction and its relationship with carotid artery stenosis or occlusion and resistance index examined by color Doppler ultrasound

目的:探讨脑梗死患者超声检查时颅外段颈动脉狭窄、闭塞及RI的临床意义。方法:对89例脑梗死患者(脑梗死组)及68例非脑梗死患者(对照组)行颅外段颈部动脉的彩色多普勒超声检查,观察动脉有无狭窄、狭窄程度及RI。结果:脑梗死组患者颅外段颈动脉狭窄的发生率、≥50%狭窄的发生率及闭塞发生率均明显高于对照组;脑梗死组中双侧颈动脉狭窄的发生率也高于对照组;脑梗死组的狭窄部位以颈内动脉最多见,但2组间RI差异无统计学意义。结论:脑梗死与颅外段颈动脉狭窄或闭塞有关;双侧颈动脉尤其是颈内动脉的严重狭窄或闭塞更易导致脑梗死;颅外段动脉RI测量无助于脑梗死的诊断。

Objective：To investigate the relationship of cerebral infarction with extracranial carotid artery stenosis or occlusion and resistance index （RI） examined by color Doppler ultrasound .Methods ：The extracranial carotid arteries were examined by color Doppler ultrasound in 89 patients with cerebral infarction and 68 cases without cerebral infarction as control group .The appearance of stenosis ,the severity of stenosis ,RI and blood flow waveform were observed .Results：The incidence and severity of extracranial carotid arterial stenosis ,the prevalence of bilateral involvement and the incidence of internal carotid artery in-volvement were higher in cerebral infarction group than in the control group .But there was no statistically significance of re-sistance index between the two groups .Conclusion：Cerebral infarction is related with extracranial carotid arterial stenosis or occlusion .Severe stenosis or occlusion of bilateral carotid artery ,especially in the internal carotid artery ,will cause cerebral in-farction .But RI measurement of carotid artery is useless for diagnosis of cerebral infarction .