Doust J W
Dis Nerv Syst. 1977 May;38(5):344-8.
Thirty-one healthy subjects and nineteen neurological patients covering a range of chronic neurological and neurovascular syndromes were examined by an electrical impedance method. Two estimates of carotid-vertebral artery transit times were measured: one time taken between the Q wave of the EKG to the commencement of the next succeeding impedance pulse-volume wave (CT1), and the other, this estimate together with the time to maximum point of the impedance wave (CT2). Results indicated prolonged circulation times for the patients as compared with the controls without relevance to age in the case of CT1, although transit times did increase with age for CT2. It is suggested that this impedance technique may be valuable in the initial screening of transient cerebral ischaemia.
采用电阻抗法对31名健康受试者和19名患有一系列慢性神经和神经血管综合征的神经科患者进行了检查。测量了两种颈动脉 - 椎动脉传输时间的估计值：一种是从心电图的Q波到下一个连续阻抗脉搏容积波开始的时间（CT1），另一种是这个估计值加上阻抗波达到最大点的时间（CT2）。结果表明，与对照组相比，患者的循环时间延长，就CT1而言与年龄无关，尽管CT2的传输时间确实随年龄增加。有人认为，这种阻抗技术在短暂性脑缺血的初步筛查中可能有价值。
