BloodSweatxED
PRN Education · No. 022 · Procedures Series

The NG
Tube.

Patients rate the nasogastric tube among the worst things done to them awake — usually because it was done fast and dry. Topical preparation, the right head position, and a patient who's swallowing on cue turn a wrestling match into thirty seconds of unpleasant.

And nothing goes down the tube — not meds, not charcoal, not feeds — until position is confirmed. Every bad NG story starts with a skipped confirmation.

When it's indicated

Fewer than habit says

Place it

  • Bowel obstruction with distension and vomiting — decompression is real therapy and real relief
  • Ileus with intractable vomiting
  • Gastric decompression in the intubated patient (orogastric preferred once there's a tube in the trachea)
  • Enteral access when the gut works and the mouth can't be used — usually an inpatient decision

Don't, or not this way

  • Midface trauma or suspected basilar skull fracture — the tube can follow the fracture intracranially; go oral if needed
  • Recent nasal, esophageal, or gastric surgery; known esophageal obstruction or perforation — talk to the surgeon first
  • Esophageal varices are a caution, not an absolute — but be gentle and be sure it's indicated
  • Severe coagulopathy: the nose bleeds enthusiastically; weigh the indication

Setup

The prep is the kindness

Kit

16–18 Fr sump

Double-lumen sump for decompression. Lubricant, topical anesthetic per institutional reference (nasal spray/gel, time to work), cup of water with a straw, emesis basin, tape, 60 mL syringe, suction ready.

Position

Sitting up

High Fowler's, emesis basin in the patient's lap, and a plan agreed on: a raised hand means pause — not stop — and you honor it.

Measure

NEX

Nose → earlobe → xiphoid. Mark the length on the tube; most adults land around 55–65 cm. Check nostril patency and pick the more open side.

The technique

4 steps
MEASURE: NOSE → EAR → XIPHOID xiphoid nose earlobe mark this length: usually 55–65 cm CHIN TUCK · ONCE PAST THE NASOPHARYNX chin to chest: esophagus opens, airway shields head extended = tube aims at the trachea; coughing, gagging, coiling follow
Fig. 1 — NEX sets the depth; the chin tuck sets the direction. Sniffing position helps intubation and sabotages NG tubes.

Prepare the nose and the patient

Topical anesthetic with onset time honored · lubricate generously · brief the plan

Anesthetize the nostril and pharynx per your institutional reference and actually wait for onset — the minutes you skip here are repaid in gagging. Lubricate the distal tube thoroughly. Explain the swallow plan: water in hand, sips on your cue.

Enter along the floor of the nose

Straight back, not up · parallel to the palate · gentle rotation past resistance

The nasal passage runs straight posterior along the floor of the nose — aiming up toward the bridge finds turbinates and starts the bleeding. Advance until you feel the gentle give of the nasopharyngeal curve; a slight rotation helps the tip turn downward.

Tuck the chin and swallow it down

Chin to chest · sips of water · advance with each swallow to the mark

At the pharynx, have the patient tuck chin to chest and start sipping (Fig. 1). Each swallow closes the airway and carries the tube esophageal — advance in time with the swallows, smoothly, to your NEX mark. Brief gagging is expected; coughing, stridor, or a voice change is not.

Coughing, can't speak, condensation cycling in the tube: you're in the airway. Withdraw to the pharynx — not out of the nose — re-tuck the chin, and try again on a swallow.

Confirm, secure, connect

Aspirate gastric contents · x-ray before anything goes in · tape without nostril pressure

Aspirate — gastric contents support position; the x-ray proves it (tip below the diaphragm, in the stomach) and is mandatory before any medication, feed, or charcoal. Auscultating an air flush is not adequate confirmation. Tape the tube so it doesn't press on the nostril rim — pressure necrosis is a slow, preventable disfigurement. Connect the sump to low intermittent suction with the blue pigtail vented and above the stomach.

Confirmation & care

The tube's daily life
ItemStandardNotes
Position proofx-rayTip in the stomach, below the diaphragm. Required before anything is administered through the tube.
Auscultation "whoosh"not enoughA tube in the lung, esophagus, or pleura can all transmit the sound. Retired as sole confirmation.
Sump functionpigtail ventedBlue lumen stays open to air and above stomach level; if it gurgles or draws fluid, flush the vent with air
No drainage?troubleshootFlush the main lumen with water, reposition the patient, check the depth mark against your documentation
Skin checksevery shiftRe-tape before the nostril blanches, not after it ulcerates
Durationshortest possibleSinusitis, aspiration, and misery accumulate daily; reassess the indication like you would a central line

Pearls & pitfalls

Where this goes wrong
Pearl

The anesthetic wait is the technique

Most brutal NG placements are just impatient ones. Topical prep given its full onset time, a lubricated tube, and a coached swallow do more than any amount of confident pushing.

Pearl

Cold and curved helps

A floppy tube coils in the pharynx. A few minutes in ice water stiffens it; a pre-curved tip follows the nasopharyngeal bend. Small physics, large dividends.

Pitfall

The sniffing position reflex

Extending the neck — the instinct from airway training — aims the tube directly at the glottis. The NG tube wants the opposite: chin tucked to chest from the pharynx onward.

Pitfall

Trusting the aspirate alone

Feeding a lung kills. Aspirate supports, x-ray proves — and any tube that's been dislodged and re-advanced needs a new film, because "it was fine this morning" is not a position check.

Pitfall

The nose through the skull base

In midface trauma, a nasally placed tube can pass through a cribriform fracture into the cranium — a rare, famous, and fully preventable catastrophe. Facial trauma = orogastric route.

Pearl

Decompression is analgesia

In the obstructed patient, the NG tube often relieves pain and vomiting better than the medications do. Frame it that way for the patient — consent goes easier when the tube is the treatment.

Sample Epic documentation

Copy · edit · attest

A starting template for the procedure note. Text in brackets [ ] and pick-lists in { } are fields to complete. Save it as a SmartPhrase, then edit every field to match the actual procedure.

.procNGT
PROCEDURE: NASOGASTRIC TUBE PLACEMENT

Indication: [***]
Consent: {verbal} consent obtained; discomfort, epistaxis,
and malposition risks discussed. Operator: @ME@

Tube: *** Fr {sump : single lumen}, {right : left} nare.
Preparation: topical anesthetic per institutional protocol,
patient upright, NEX measurement *** cm.

Placement: passed along nasal floor without resistance;
advanced with swallows to *** cm. {Gastric contents
aspirated.} No respiratory distress or voice change during
placement. Attempts: ***

Confirmation: {CXR — tip below diaphragm in stomach :
pending — nothing administered via tube until confirmed}

Secured with {tape : securement device}, no pressure on
nostril rim. Connected to {low intermittent suction :
gravity : clamped}.

Complications: {none : minor epistaxis, resolved : ***}

Electronically signed: @ME@  @TD@ @NOW@

Sample template only — not a validated institutional SmartPhrase. Verify wording, consent, and attestation requirements against your department's documentation, coding, and compliance policies before clinical use.

PRN Education · Procedures Series

Keep your hands busy