Dr . Rupak Bhattarai
Taishan Medical University
Tracheal tube can be used to deliver anesthetic gases directly
into the trachea and allow the most control of ventilation and
oxygenation.
Tracheal tubes are most commonly made up of polyvinyl
chloride.
The shape and rigidity of TT’s can be altered by inserting a
stylet.
PARTS OF ETT
It consists of the
following parts :
• BEVELED TIP
• MURPHY EYE
• CUFF
• CONNECTOR
• PILOT BALLOON
• VALVE
ENDOTRACHEAL
TUBE
DIFFERENT SIZES
ENDOTRACHEAL
TUBES
o The BEVELED TIP aid visualisation and insertion through
the vocal cords.
o MURPHY EYE is a hole to decrease the risk of occlusion.
o CUFF reduces the likelihood of aspiration.
o The INFLATING TUBE connects the valve to the cuff
through the Endotracheal tubes.
o The PILOT BALLOON provides the gross indication of cuff
inflation.
o The VALVE prevents air loss after cuff has been inflated.
•FULL TERM INFANT : 3.5 mm
•CHILD : 4+age /4 (mm)
•ADULT :
FEMALE : 7.0-7.5 (mm)
MALE : 7.5-9.0 (mm)