Grossi D, Buonomo C, Mirizzi F, Santostasi R, Simone F
1st Department of Neurology, University of Bari, Italy.
Funct Neurol. 1990 Jul-Sep;5(3):257-60.
Two hundred and seventy-nine consecutive patients referred for transient loss of consciousness, compatible with syncope, underwent head-up tilt to 70 degrees during polygraphic (EEG, ECG, pneumographic) and blood pressure monitorings. Vasovagal syncopes occurred in 28 patients with the following EEG changes: progressive slowing until the appearance of middle or high amplitude delta waves generalized and synchronous in 9 patients; delta waves suddenly followed by transient flattening of EEG activity in 16 patients. In 2 patients EEG could not be interpreted because of muscle and/or movement artifacts. Fifteen out of 28 patients exhibited a marked cardioinhibition, expressed by long-lasting cardiac pauses; a relationship between duration of EEG flat and duration of asystole was not found.
279例因短暂意识丧失前来就诊且符合晕厥表现的连续患者，在多导记录（脑电图、心电图、呼吸描记图）和血压监测期间接受了70度头高位倾斜试验。28例患者发生血管迷走性晕厥，伴有以下脑电图变化：9例患者脑电图逐渐减慢，直至出现中波或高波幅广泛性同步的δ波；16例患者δ波后突然出现脑电图活动短暂平坦。2例患者因肌肉和/或运动伪迹无法解读脑电图。28例患者中有15例表现出明显的心抑制，表现为持续性心脏停搏；未发现脑电图平坦持续时间与心脏停搏持续时间之间的关系。
