Not the tube: The machine (respirator) attached to the breathing tube is set to the appropriate parameters to breathe for you. The oxygen or anesthetic gas goes through the tube to your lungs.
Answered 8/1/2013
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Yes: The breathing tube, called an endotracheal tube, goes through your mouth and into your windpipe (trachea). This allows doctors to breathe for you using a ventilator that uses positive pressure to get air into your lungs. You can also get anesthetic gases to help you you asleep.
Answered 10/30/2017
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