What size of Nasogastric Tube (NGT) is recommended for adult patients requiring nasogastric tube feeding?

Nasogastric Tube Size for Adult Feeding

For adult nasogastric tube feeding, use fine bore 5-8 French gauge tubes, as recommended by the European Society for Clinical Nutrition and Metabolism. 1, 2

Recommended Tube Size

• Fine bore 5-8 French gauge NG tubes should be used for feeding applications in adults 1, 2
• Small diameter tubes (8 French) are specifically recommended for stroke patients to minimize the risk of internal pressure sores 1
• Large bore PVC tubes must be avoided for feeding purposes, as they irritate the nose and esophagus and significantly increase risks of gastric reflux and aspiration 1, 2

When to Use Larger Tubes

• Tubes with greater diameter should only be placed if gastric decompression or aspiration is necessary 1
• Large bore tubes are not appropriate for routine enteral feeding 1

Critical Pitfalls to Avoid

• Do not use large bore PVC tubes for feeding - they cause mucosal irritation and increase aspiration risk 1, 2
• Ensure proper tube placement verification before initiating feeds via x-ray or aspiration of gastric content with pH measurement 1, 2
• If administering high fiber feeds or medications through the tube, a larger bore may be required, but this should be the exception rather than the rule 1

Duration Considerations

• Fine bore NG tubes are appropriate for feeding durations up to 4-6 weeks 1, 2
• For feeding needs exceeding 4-6 weeks, consider percutaneous gastrostomy tube placement instead 1, 2
• Long-term NG tubes should be changed every 4-6 weeks, alternating nostrils 3