Rhythmic oscillations with a wavelength of 0.5–2 min in transcranial Doppler recordings
Rhythmic oscillations with a wavelength of 0.5–2 min in transcranial Doppler recordings
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经颅多普勒记录中波长为 0.5-2 分钟的节律振荡
DOI：
10.1111/j.1600-0404.1994.tb02687.x
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发表时间：
1994
影响因子：
3.5
通讯作者：
Martin M. Brown
中科院分区：
文献类型：
--
作者：
D. W. Droste;Joachim K. Krauss;W. Berger;E. Schuler;Martin M. Brown
我们通过经颅多普勒超声（TCD）监测研究了颅内压（ICP）B波及其与血流速度（B波等效值）节律性变化的相关性。在10名正常青年人的夜间TCD记录中，这些血流速度的节律性变化在REM睡眠和睡眠阶段1比其他睡眠阶段更高，更频繁。B波在快速眼动睡眠期间也有较长的波长。在这些正常受试者中，一夜之间的相对频率为35%至73%。外周阻力（通过Pourcelot指数评估）较低，心率在这些振荡的峰值较高。这些结果支持ICP B-波由血管舒张引起的假设。在11例疑似NPH患者中的9例中，发现ICP与B波血流速度之间存在非线性关系。我们的研究结果对以下建议提出了质疑，即相对频率低于80%的B波活动可以作为疑似正常压力脑积水（NPH）患者分流反应性的有效指标。疑似NPH患者的ICP记录应伴随多导睡眠图，以避免由于B波外观依赖于睡眠模式的变异性而导致的误导性结果。
We have studied intracranial pressure (ICP) B‐waves and their association with rhythmic changes in blood flow velocity (B‐wave equivalents) by transcranial Doppler sonography (TCD) monitoring. In overnight TCD recordings in 10 normal young adults, these rhythmic changes in blood flow velocity were higher and more frequent during REM sleep and sleep stage 1 than during other sleep stages. B‐wave equivalents also had a longer wavelength during REM sleep. Their relative frequency in these normal subjects over one night ranged from 35 to 73%. Peripheral resistance (assessed by the Pourcelot index) was lower and heart rate was higher at the peak of these oscillations. These results support the hypothesis that ICP B‐waves are caused by vasodilation. A non‐linear relationship between ICP and blood flow velocity was found during B‐waves in 9 of 11 patients with suspected NPH. Our results throw doubt on the suggestion that a relative frequency of less than 80% B‐wave activity can be a valid indicator for shunt responsiveness in patients with suspected normal pressure hydrocephalus (NPH). ICP recordings in suspected NPH should be accompanied by polysomnography to avoid misleading results due to variability of B‐wave appearance dependant on sleep pattern.
脑脊液分流治疗痴呆、失禁和步态障碍。
DOI：
--
发表时间：
1985
期刊：
Clinical neurosurgery
影响因子：
--
作者：
Black,PM;Ojemann,RG;Tzouras,A
通讯作者：
Tzouras,A