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Nasogastric Tubes
 
 

Confirmation

 
 
 
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Confirming NG Placement

Instil air - use a syringe to inject air into the NG while auscultating over the epigastrium, listening for a gurgling sound. This should not be used as the sole method of checking placement.
Aspirate - aspirate stomach contents and check the pH (<5.5) using litmus paper.
Chest x-ray - ensure that the distal tip and side hole are below the diaphgram.
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