Page 257 - PJ MED OPS Handbook 8th Ed

Airway and Critical Care References
Endotracheal Tube Size

• Adult male: 8.0
• Adult female: 7.0
• Infant: 3.5 no cuff
• Toddler: 4.0 no cuff
• 2-year old: 4.5 no cuff
• Child: Age+16/4 cuff ok >5 yr

Endotracheal Tube Sizes/Airway Management
Size Distance@lip Inflation
Age (mmID) Blade (cm) LMA Volume
Premature (1–2.5kg) 2.5*–3.0* 0Miller 6–8 N/A
Term 60 mo. (2.5–4kg) 3.0*–3.5* 1Miller 9–11 #1 2–4mL
6–12 mo. (5–7kg) 3.5*–4.0* 1Miller 11 #1.5 2–7mL
12–20 mo. (7–10kg) 4.0*–4.5* 1.5 WisHip 12 #1.5 2–7mL
2 years (12kg) 4.5*–4.0* 1.5 WisHip 13 #2 2–10mL
4 years (14kg) 5.0*–4.5* 2Miller/Mac 14 #2 2–10mL
6 years (18kg) 5.0 2Miller/Mac 15–16 #2 2–14mL
8 years (24kg) 5.5 2Miller/Mac 16–17 #2.5 2–14mL
10 years (30kg) 6.5 2Miller/3Mac 17–18 #2.5 2–14mL
12 years (>30kg) 7.0 2Miller/3Mac 18–20 #3 20mL
Adult Normal (50–70kg) 7.0–8.0 2Miller/3Mac 20–22 #4 30mL
Adult Large (70–100kg) 8.0–9.0 3Miller/4Mac 22–24 #5 40mL
Pregnancy 6.5–7.0 2Miller/3Mac 20–22 #4 30mL
Adult Nasal Intubation 6.5–7.5 2–3Miller/3–4Mac add 2–3 to oral N/A
*uncuffed ETT Size (mm) = (age + 16) ÷ 4 Distance at lip (cm) = 3 × Size (mm), Nasal = 4 × Size

Chapter 23. Mnemonics, Conversion Charts and Cheat Sheets n 255