Meixensberger J, Hamelbeck B, Dings J, Ernemann U, Roosen K
Department for Neurosurgery, University of Würzburg.
Zentralbl Neurochir. 1996;57(2):70-5.
Thirty cases of subarachnoid haemorrhage (SAH), who underwent early aneurysm clipping, were studied to clarify the significance of a critical increase of blood flow velocities in correlation to neurological disability and cerebral blood flow. Three different groups of patients could be distinguished: 57% (17) of the cases showed increased TCD-values at the affected side corresponding to secondary neurological deficits (Vasospasm-group). The CBF-results pointed out a side difference according to the flow acceleration. In 7 patients (23%) we detected a similar side difference in blood flow velocity, but no secondary deficit appeared. The corresponding CBF-measurements showed risen values with no side difference (Hyperaemia-group). The third group of patients (20% i.e.6 cases) developed neurological deficits and corresponding side difference in CBF-measurements, but the transcranial Doppler sonography could not detect a significant side difference and even showed normal values (Blind-TCD-group). Critical increased blood flow velocities after SAH without secondary neurological deficits does not indicate vasospasm but hyperaemia.
对30例接受早期动脉瘤夹闭术的蛛网膜下腔出血（SAH）患者进行研究，以阐明血流速度的临界增加与神经功能障碍及脑血流量之间的关系。可将患者分为三组：57%（17例）患者患侧经颅多普勒（TCD）值升高，伴有继发性神经功能缺损（血管痉挛组）。脑血流量（CBF）结果显示，根据血流加速情况存在侧别差异。7例患者（23%）血流速度存在类似侧别差异，但未出现继发性缺损。相应的CBF测量显示值升高，无侧别差异（充血组）。第三组患者（20%，即6例）出现神经功能缺损及CBF测量的相应侧别差异，但经颅多普勒超声未检测到明显侧别差异，甚至显示正常数值（TCD盲组）。SAH后血流速度临界增加但无继发性神经功能缺损并不表明血管痉挛，而是充血。
