The length of the feeding tube to be inserted for transpyloric feeding is measured from the tip of -
Nose to the umbilicus.
Ear lobe to the umbilicus.
Nose to the knee joint.
Ear lobe to the knee joint.
The feeding tube length can be measured by following the normal route for tube i.e.
Nasal ala → to ear lobe → to epigastium
Since the distance between the nasal ala and ear lobe is almost equal to the distance between the epigastrium and umbilicus, the length can be measured from ear lobe to umbilicus.