Vital signs

Foley catheters

Nasogastric tubes

Endotracheal tubes

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Typical weights and  tube sizes for age: Endotracheal tubes
 Endotracheal tubes in small children are uncuffed, because of the anatomic differences of the larynx: In adults (left), the vocal cords form the narrowest portion of the larynx and trachea, necessitating stabilization of the tube with a cuff. In small children (right), the cricoid ring is the narrowest portion, and its circular lumen stabilizes the tube without the need for a balloon cuff.  


 Weight (kg)

ET-tube (mm)
 0-6 months


 1 year


 2 years


 3 years


 5 years


 6 years


  8 years


 12 years





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