Saitoh K, Saitoh J, Fukuda H, Igarashi T, Mitsuhata H, Hirabayashi Y, Hotta K, Shimizu R
Department of Anesthesiology, Jichi Medical School, Tochigi.
Masui. 1996 Aug;45(8):1015-7.
We anesthetized a patient who received an emergency internal carotid artery ligation. Regional cerebral oxygen saturation (rSO2) was measured with near infrared spectroscopy (NIRS) during the whole anesthetic course. The sensor was placed on the left forehead of the patient. Decrease in blood pressure was reflected in the decrease in rSO2. The rSO2 was not altered by internal carotid ligation. However, cerebral infarction in the middle cerebral artery region, the onset of which remained unclear, was revealed postoperatively, regardless of a stable rSO2 during the operation. This monitor may provide useful information regarding the cerebral circulation during the operation in such a case as the present one, but this monitor reflects only the oxygenation of the region on which the sensor was placed. Thus, we should keep in mind the limitation in detecting cerebral dysfunction using NIRS.
我们对一名接受紧急颈内动脉结扎术的患者实施了麻醉。在整个麻醉过程中，使用近红外光谱法（NIRS）测量局部脑氧饱和度（rSO2）。传感器置于患者左前额。血压下降反映在rSO2降低。颈内动脉结扎并未改变rSO2。然而，术后发现大脑中动脉区域发生了脑梗死，但其发病原因尚不清楚，尽管手术期间rSO2保持稳定。在当前这种情况下，该监测仪可能会为手术期间的脑循环提供有用信息，但该监测仪仅反映传感器所放置区域的氧合情况。因此，我们应牢记使用NIRS检测脑功能障碍的局限性。
