实验组以带管芯的气管导管行盲探经鼻气管插管术，对照组则不带管芯。

The catheters with core was selected in experiment group, and without core in control group.

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实验组以带管芯的气管导管行盲探经鼻气管插管术，对照组则不带管芯。

The catheters with core was selected in experiment group, and without core in control group.

youdao