Minimum and optimum light output of Macintosh size 3 laryngoscopy blades: a manikin study *
Minimum and optimum light output of Macintosh size 3 laryngoscopy blades: a manikin study *
复制标题
Macintosh 3 号喉镜刀片的最小和最佳光输出：人体模型研究 *
作者：
A. Scholz;N. Farnum;A. Wilkes;M. Hampson;J. Hall
喉镜刀片提供的照明差别很大。目前还不知道喉镜检查时的最佳光照水平。到目前为止，还没有关于喉镜提供的光强度的公开标准。研究人员招募了50名麻醉师对一个假人进行喉镜检查，并将三个不同的喉镜连接到一个可变电压电源上。麻醉师被要求找到他们希望插管时的最低和最佳光线水平。这项研究表明，麻醉师可以在非常弱的光线下看到喉咙。最适水平显著大于最低水平。真空灯泡喉镜提供的光输出比卤素和氙气喉镜低得多。麻醉师对照明的要求有很大的不同，这可能会使制定标准变得困难。一些制造商建议的更亮的喉镜不一定是更好的喉镜。
Illumination provided by laryngoscope blades varies widely. It is not known what the optimum level of illumination should be during laryngoscopy. So far, no published standards exist for light intensity provided by laryngoscopes. Fifty anaesthetists were recruited to perform laryngoscopy on a manikin with three different laryngoscopes attached to a variable voltage supply. Anaesthetists were asked to find the minimum and optimum level of light they would wish to have for intubation. This study demonstrated that anaesthetists can see the larynx at very low light levels. The optimum level was significantly greater than the minimum level. The vacuum bulb laryngoscopes provides a significant lower light output than halogen and xenon laryngoscopes. There is a large variation in illumination requirements amongst anaesthetists which may make setting standards difficult. A brighter laryngoscope, as suggested by some manufacturers, may not necessarily be a better one.