Friday June 15, 2007
ETT size for Bronchoscope !

It is no brainer to have reasonably wide diameter of endotracheal tube (ETT) to accomodate bronchoscope. Size 8 (mm in internal diameter) is said to be a good and acceptable ETT for adult bronchoscopy. But to be precise:

the internal diameter of ETT should be aleast more than (or =) 2 mm of external diameter of bronchoscope.

Reference: clickable

British Thoracic Society guidelines on diagnostic flexible bronchoscopy - British Thoracic Society Bronchoscopy Guidelines Committee, a Subcommittee of the Standards of Care Committee of the British Thoracic Society Thorax 2001;56(Suppl 1):i1-i21 ( February )