Table 2
Infant weight and suggested insertion length of an appropriate NPA
Body Weight (Kg)
Nosetip–Earlobe distance (cm)
Nares-Vocal cord distance (cm)
Approximate insertion length (cm)
<3
7.6 +/− 1.3
7.6 +/− 0.8
7.0
3–6
8.8 +/− 1.0
8.8 +/− 0.7
8.0
6–9
10.0 +/− 0.8
9.6 +/− 0.6
9.0
9–12
10.1 +/− 0.9
10.2 +/− 0.5
9.5