Nevus comedonicus: An image to remember

tent placement of an NG tube into the airways may be associated with cough and dyspnoea, the absence of these does not preclude this possibility. If the tube is being placed for the administration of medications or nutrition, intragastric placement must be confirmed beforehand. Correct location is often made obvious by aspirating out a large amount of gastric contents. Pushing 50 cc of air through the tube using a large syringe while auscultating the stomach with a stethoscope is a commonly described manoeuvre to determine the location of the tube, but it is of questionable efficacy. Misplaced NG tubes placed in the left mainstem bronchus and small bowel can sound similar to adequately placed NG tubes. Taking a plain X-ray which includes both airways and the upper gastro-intestinal tract is therefore the best way to confirm the location of the tube. References