Helliwell V, Gabbott D A
Department of Anaesthetics, Gloucester Royal Hospital, Great Western Road, Gloucester GL1 3NN, UK.
Resuscitation. 2001 Apr;49(1):53-7. doi: 10.1016/s0300-9572(00)00307-5.
Six adult cadavers had 40 N cricoid pressure applied using a cricoid 'yoke' whilst maintaining manual in-line stabilisation of the cervical spine. No other spinal supports were used. Lateral radiographs were taken before and after applying pressure to the cricoid cartilage and the degree of cervical spine movement accurately determined. The median vertical displacements measured from the body of C5 and two other reference points (A and B) on the cervical spine were 0.5 mm (range 0-1.5 mm) and 0.5 mm (range 0-3 mm), respectively. There was no disruption to the lines formed by the anterior or posterior borders of the cervical bodies. We have been unable to demonstrate that single-handed cricoid pressure causes clinically significant displacement of the cervical spine in a cadaver model. This conflicts with previous studies.
六具成年尸体在保持颈椎手动轴向稳定的同时，使用环状软骨“轭”施加40牛的环状软骨压迫。未使用其他脊柱支撑物。在对环状软骨施加压力前后拍摄侧位X线片，并准确测定颈椎的活动度。从C5椎体和颈椎上的另外两个参考点（A和B）测量的垂直位移中位数分别为0.5毫米（范围0 - 1.5毫米）和0.5毫米（范围0 - 3毫米）。颈椎椎体前缘或后缘形成的线没有中断。在尸体模型中，我们未能证明单手环状软骨压迫会导致颈椎发生具有临床意义的移位。这与之前的研究结果相矛盾。
