For continuous feeding, a gravity based system is employed, with the solution placed higher than the patient's stomach.

[4] Suction drainage is also used for patients who have undergone a pneumonectomy in order to prevent anesthesia-related vomiting and possible aspiration of any stomach contents.

Before an NG tube is inserted, it must be measured from the tip of the patient's nose, loop around their ear and then down to roughly 3–5 cm (1–2 in) below the xiphoid process.

One method, according to the Australian Journal of Otolaryngology, is performed by a physician to pull a material through the nares and then tied with the ends shortened to prevent removal of the tube.

This device uses a magnet inserted into both nares that connects at the nasal septum and then pulled through to one side and tied.

A study conducted in the UK from 2014 through 2017, determined that 50% of feeding tubes secured with tape were lost inadvertently.

Future techniques may include measuring the concentration of enzymes such as trypsin, pepsin, and bilirubin to confirm the correct placement of the NG tube.

Only smaller diameter (12 Fr or less in adults) nasogastric tubes are appropriate for long-term feeding, so as to avoid irritation and erosion of the nasal mucosa.

[citation needed] Function of an NG tube properly placed and used for suction is maintained by flushing.

[13] The use of nasogastric intubation is contraindicated in patients with moderate-to-severe neck and facial fractures due to the increased risk of airway obstruction or improper tube placement.

[4] Alternative measures, such as an orogastric intubation, should be considered under these circumstances, or if the patient will be incapable of meeting their nutritional and caloric needs for an extended time period (usually >24 hours).

[14][4] Nasogastric tubes can also be mistakenly placed within the intracranial space; this is more likely to occur in patient who already have specific types of skull fractures.

[14][4] Fox News Digital reported about a voluntary field correction notice dated March 21, 2022, referenced 60 injuries and 23 deaths related to misplacement of a nasogastric tube.