Final answer:
To determine the length of an NG tube to reach the stomach, use the NEX technique by measuring from the nose to the earlobe and then to the midpoint between the xiphoid process and the umbilicus.
Step-by-step explanation:
Determining the Length of an NG Tube
To determine the length of a nasogastric (NG) tube that must reach the stomach, the tube is measured from the nose to the earlobe and then to the midpoint between the xiphoid process and the umbilicus. This method is known as the NEX (nose, earlobe, xiphoid) technique. By using this technique, healthcare professionals can ensure that the NG tube reaches the stomach accurately and safely.
For example, if a patient's nose to earlobe distance is 30 cm and the earlobe to umbilicus distance is 40 cm, the NG tube length would be 70 cm.