graduation/measurement marks
Confirming the tube placement at the bedside can be done by checking the tube graduation/measurement marks. If the tube is at a different graduation point, the tube may not be in the correct position, and the care team should be notified. Other bedside methods of confirming tube placement, like air auscultation or gastric residual testing, are not as accurate. Obtaining an x-ray to confirm tube placement is the gold standard if there is any doubt, but this is not a routine method or commonly performed at the bedside.