Conclusion: The critically emergent patients had higher gastric content and GP,lower LESP and UESP. They tended to reflux because of more effect from anesthesia.

• 结论:急重症病人胃内容量大、GP高,LESP和UESP易受麻醉有关用药的抑制,导致张力下降,是麻醉中易发生反流的主要原因。