Arnetoli G, Amadori A, Stefani P, Nuzzaci G
2nd Neurological Institute, University of Florence, Italy.
Angiology. 1989 Aug;40(8):716-20. doi: 10.1177/000331978904000805.
Two groups of subjects, matched for age, were studied. The first group consisted of 190 healthy subjects, the second, of 60 patients with vertebrobasilar transient ischemic attacks (TIAs), 22 of whom underwent angiography. After it was ascertained that the findings from continuous-wave (cw) Doppler of carotid and vertebral arteries, performed in the standard position, were normal, the examination was then done in De Kleyn's position, the velocity signal being detected at the mastoidal slopes. The abnormal findings were classified into two groups: "loss of diastolic velocity signal" and "absence of velocity signal." In the control group, changes of flow were detected in 6.31%, whereas in the group of patients abnormal Doppler parameters were detected in 33.33%. None of the patients who were submitted to angiography showed abnormal hemodynamic findings. The authors suggest that the detection of the velocity signal of the vertebral arteries in De Kleyn's position could be of help in revealing conditions that could cause, in time, signs and/or symptoms of vertebrobasilar insufficiency in subjects with possible asymptomatic anomalies of the circle of Willis.
对两组年龄匹配的受试者进行了研究。第一组由190名健康受试者组成，第二组由60名椎基底动脉短暂性脑缺血发作（TIA）患者组成，其中22人接受了血管造影。在确定标准体位下进行的颈动脉和椎动脉连续波（cw）多普勒检查结果正常后，然后在德克莱恩体位进行检查，在乳突斜坡处检测速度信号。异常发现分为两组：“舒张期速度信号消失”和“速度信号缺失”。在对照组中，6.31%检测到血流变化，而在患者组中，33.33%检测到异常多普勒参数。接受血管造影的患者均未显示异常血流动力学结果。作者认为，在德克莱恩体位检测椎动脉速度信号可能有助于发现那些可能因 Willis 环无症状异常而及时导致椎基底动脉供血不足体征和/或症状的情况。
