Assertion: endotracheal tube | /r/AtLocation | the trachea
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text: For example, when a high frequency jet ventilation or insufflation catheter is inserted into an endotracheal tube that has been placed in the trachea, the distal end of the catheter can lie against the sidewall of the endotracheal tube lumen or sidewall of the trachea, depending upon how the catheter is inserted.