Konishi A, Sakai T, Nishiyama T, Higashizawa T, Bito H
Department of Anesthesia, Shin Tokyo Hospital, Matsudo.
Masui. 1997 Jan;46(1):124-7.
The movement of cervical spine during orotracheal intubation was compared using the McCoy, Macintosh or Miller laryngoscope blade. Twenty ASA 1-2 patients requiring tracheal intubation were studied. Following induction of anesthesia and obtaining muscle relaxation, the cross-table lateral X-ray was taken before and during laryngoscopy using three types of laryngoscopes. Degree of cervical spine movement was evaluated by measuring the distance between the spinous processes of C1 and the occiput, and the amount of displacement of C1 and C5 against C3 by tracing on each films. The results indicated that delta C1-occiput was larger and delta C1 + C5 smaller with the McCoy laryngoscope compared with the others. The use of the McCoy laryngoscope results in less cervical spine movement during laryngoscopy and therefore should be of particular benefit in the presence of cervical spine instability as well as in the normal patients.
使用麦考伊喉镜、麦金托什喉镜或米勒喉镜叶片，比较经口气管插管期间颈椎的活动情况。研究了20例需要气管插管的美国麻醉医师协会（ASA）1-2级患者。在麻醉诱导并获得肌肉松弛后，使用三种类型的喉镜在喉镜检查前和检查期间拍摄交叉台面侧位X线片。通过测量C1棘突与枕骨之间的距离，以及在每张胶片上进行追踪来评估C1和C5相对于C3的位移量，从而评估颈椎的活动程度。结果表明，与其他喉镜相比，使用麦考伊喉镜时C1与枕骨之间的差值更大，C1 + C5的差值更小。使用麦考伊喉镜可减少喉镜检查期间颈椎的活动，因此，对于颈椎不稳定的患者以及正常患者都特别有益。
