Types of nasogastric tubes
There are commonly two different types of nasogastric
tubes: fine-bore and wide-bore. The wide-bore tube, more
commonly known as Ryles tube, is used for aspiration of
gastric contents. It should not be used for enteral feeding.
A fine-bore nasogastric tube (size 12 Fr or less) is, due to
its smaller diameter, more comfortable for the patient and
minimises the risk of developing sinusitis, sore throat and
epistaxis (nose bleeds) associated with larger bore tubes
(Prabhakaran et al, 2012).
Fine-bore nasogastric tubes are made from polyvinyl
chloride (PVC) or polyurethane. PVC tubes are used where
feeding is required for no longer than 7–10 days. If needed
for longer periods, a polyurethane tube, which is softer and
more flexible, should be used. The choice of nasogastric
tube used often depends on cost or ease of use and may
change according to the clinical environment in which it
was inserted. Nevertheless, it should be fit for purpose and
be the smallest diameter able to cope with the safe delivery
of the patient’s nutritional and fluid needs.