Breathing tube pressure during bypass surgery may prevent swelling

This study looked at 76 adults having heart bypass surgery to see if changing the pressure in the breathing tube's cuff (the balloon that holds it in place) during the heart-lung machine phase affects swelling in the airway. One group had the cuff pressure lowered to zero, while the other kept it at normal levels. The researchers used ultrasound to measure airway swelling at different times. The goal was to find a safer way to manage the breathing tube and reduce complications.