In the esophagus, the mucosa collapses against the distal end of the endotracheal tube, thereby limiting the ability to fully pull back on a syringe or for a flexible compressed bulb to reexpand.

在食道，靠近气管导管远端的粘膜溃烂，因此限制了注射器回抽的能力或弹性可压缩容器的膨胀性。