Win N N, Kohase H, Miyamoto T, Umino M
Section of Anesthesiology and Clinical Physiology, Department of Oral Restitution, Division of Oral Sciences, Graduate School, Tokyo Medical and Dental University, 1-5-45, Yushima, Bunkyo-ku, Tokyo, Japan 113-8549.
Br J Anaesth. 2003 Nov;91(5):749-52. doi: 10.1093/bja/aeg238.
We report two cases who exhibited a decrease in their bispectral index (BIS) score, associated with syncope during venipuncture in patients with suspected needle phobia. In case 1, the reduction in BIS score occurred during the development of hypotension and bradycardia and may well have been caused by cerebral hypoperfusion. In case 2, the patient lost consciousness with decreasing BIS score before hypotension and bradycardia; this patient's condition could not be completely explained by cerebral hypoperfusion as a result of a vasovagal reflex because the patient's blood pressure and heart rate remained normal during the syncopal episode.
我们报告了两例疑似针头恐惧症患者在静脉穿刺过程中出现双谱指数(BIS)评分下降并伴有晕厥的病例。在病例1中,BIS评分下降发生在低血压和心动过缓发展过程中,很可能是由脑灌注不足引起的。在病例2中,患者在低血压和心动过缓之前随着BIS评分下降而失去意识;由于该患者在晕厥发作期间血压和心率保持正常,因此血管迷走反射导致的脑灌注不足无法完全解释该患者的病情。