A patient who is 188cm (6ft 2in) tall is intubated with an 8…

A patient who is 188cm (6ft 2in) tall is intubated with an 8.0-mm ID endotracheal tube that is secured with a 18-cm mark adjacent to the incisor. A respiratory therapist hears a gurgling sound with each inhalation and observes the exhaled Vt is 300mL less than the inhaled Vt. The therapist increases the cuff pressure from 16cmH2O to 24cmH2O. There is no change in the sound or the exhaled Vt.  The therapist should: