One thing I learned to ameliorate the volume changes that can occur within the ETT cuff is to utilize normal saline or sterile water instead of air. Have a good day, Happy Holidays, and fly safe!
Anthony N. Cascio
Paramedic
Lake Hiawatha, NJ USA
"Watch your thoughts, for they become words. Choose your words, for they become actions. Understand your actions, for they become habits. Study your habits, for they will become your character. Develop your character, for it becomes your destiny."