Duncan L A, Ruckley C V, Wildsmith J A
Department of Anaesthesia, Royal Infirmary, Edinburgh.
Anaesthesia. 1995 Dec;50(12):1041-5. doi: 10.1111/j.1365-2044.1995.tb05947.x.
Cerebral oximetry was evaluated as a monitor of oxygenation during carotid endarterectomy in 22 patients. The oximeter was a reliable continuous monitor, identifying changes in cerebral oxygenation during episodes of hypotension and after arterial occlusion. Changes in oxygenation correlated well with the surgical assessment of backbleeding after arterial clamping, but less well with other methods which are used to make a decision on insertion of an arterial shunt. There was no correlation between internal carotid artery stump pressure and change in cerebral oxygenation after application of the arterial cross clamp. However, cerebral oxygenation correlated weakly with the change in middle cerebral artery velocity as measured by transcranial Doppler ultrasonography (r = 0.49, p < 0.02).
对22例患者在颈动脉内膜切除术期间，将脑血氧饱和度测定作为氧合监测手段进行了评估。该血氧饱和度测定仪是一种可靠的连续监测设备，可识别低血压发作期间及动脉闭塞后大脑氧合的变化。氧合变化与动脉夹闭后回血的手术评估相关性良好，但与用于决定是否插入动脉分流管的其他方法相关性较差。应用动脉交叉夹闭后，颈内动脉残端压力与大脑氧合变化之间无相关性。然而，大脑氧合与经颅多普勒超声测量的大脑中动脉血流速度变化呈弱相关（r = 0.49，p < 0.02）。
