Sizing Comparison Chart
Neonatal and Pediatric Tracheostomy Tubes

Bivona Shiley
Size I.D. O.D. Length 
mm
Suction 
Catheter
Size I.D. O.D. Length 
mm
Suction 
Catheter
2.5 NEO 2.5 4.0 30 6  
3.0 NEO  3.0 4.7 32 6 or 8 3.0 NEO 3.0 4.5 30 6
3.5 NEO 3.5 5.3 34 6 or 8 3.5 NEO 3.5 5.2 32 6 or 8
4.0 NEO 4.0 6.0 36 6 or 8 4.0 NEO 4.0 5.9 34 6 or 8
  4.5 NEO 4.5 6.5 36 6 or 8
2.5 PED 2.5 4.0 38 6  
3.0 PED 3.0 4.7 39 6 or 8 3.0 PED 3.0 4.5 39 6
3.5 PED 3.5 5.3 40 6 or 8 3.5 PED 3.5 5.2 40 6 or 8
4.0 PED 4.0 6.0 41 6 or 8 4.0 PED 4.0 5.9 41 6 or 8
4.5 PED 4.5 6.7 42 6 or 8 4.5 PED 4.5 6.5 42 6 or 8
5.0 PED 5.0 7.3 44 8 or 10 5.0 PED 5.0 7.1 44 8 or 10
5.5 PED 5.5 8.0 46 10 or 12 5.5 PED 5.5 7.7 46 10 or 12
 

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