Measure the tube for distance to be inserted.
(a) Find the target distance for inserting the tube by measuring
from the tip of the nose to the tip of the ear, and then to the tip of the xiphoid process
(see Figure 4-3. Mark it with a small piece of tape.
Figure 4-3. NEX -- Nose to Ear to Xiphoid.
(b) A scale (commercial) is available that measures the distance
more precisely since NEX may be too long for short patients and too short for taller
Some tubes have approximate target marking on them.
1 One black band indicating the length of the tubing needed to
reach the stomach.
2 Two bands for the pylorus.
3 Three bands for the duodenum.
Lubricate the tip of the tube and insert it in the patient's nose.
Aim the tube down and toward the ear.
(b) For easier insertion, use water or a water-base lubricant to
moisten the tip of the tube.