Measure the space from the bridge of the infants’ nose to the earlobe then to a point halfway between the xiphoid process and the umbilicus using a #8 or #10 feeding tube. If the child is older than 1 year of age, measure from the bridge of the nose to the earlobe to the xiphoid process.
Measuring the tube ensures it will be long enough to enter the stomach. If the tube is passed too long it will curl and end up in the esophagus, if not passed far enough, it will also be in the esophagus. Both situations could lead to aspiration of the feeding.