What should the RT do if a high-pressure alarm sounds after adjusting the ET tube cuff pressure?

The appropriate action when a high-pressure alarm sounds after adjusting the ET tube cuff pressure is to attempt to pass a suction catheter through the ET tube. This alarm indicates that there may be increased resistance to airflow, which can result from various factors including secretions blocking the airway, the ET tube being partially obstructed, or the placement of the tube itself. By attempting to pass a suction catheter through the ET tube, the respiratory therapist can assess for and potentially alleviate any obstruction that may be causing the high-pressure alarm, thereby ensuring that the airway is clear and the patient can breathe effectively.

This approach is proactive and addresses the possibility of a critical airway issue, as opposed to simply silencing the alarm, which would not resolve the underlying problem. Removing the ET tube is generally a drastic measure that is not warranted at this stage unless absolutely necessary. Readjusting the cuff using the minimal leak technique is not indicated in this scenario, as it is essential first to confirm that the airway is not obstructed before making additional adjustments to cuff pressure.