Synopsis
Select enteral access appropriately, confirm tube position without unsafe shortcuts, prescribe feed and water coherently, and prevent aspiration, metabolic, mechanical and medication-related harm.
- Use enteral feeding when oral intake is unsafe or inadequate but the gastrointestinal tract is sufficiently accessible and functional; the indication and intended duration determine access.
- Nasogastric tubes generally suit short-term gastric feeding, post-pyloric tubes help selected gastric-intolerance or aspiration situations, and gastrostomy or jejunostomy may serve longer-term needs.
- Before first use of a nasogastric tube, accept only aspirate pH within the endorsed safe range or an appropriately obtained and interpreted X-ray; never use whoosh, bubble, litmus or fluid appearance tests.
- Recheck position after insertion and whenever displacement is possible, following local policy before feed, water or medicines enter the tube.
- The prescription includes formula, route, rate or bolus schedule, progression, water flushes and the contribution of medications and intravenous fluids, not merely a number of feed bags.
- Elevate the upper body during gastric feeding when possible, respond to vomiting or respiratory change, and address sedation, gastric delay and tube migration as aspiration determinants.
- Give medicines separately with suitable water flushes and pharmacy advice; crushing modified-release, enteric-coated, cytotoxic or hazardous preparations can injure the patient or staff.
- Diarrhoea during tube feeding is not automatically formula intolerance: review antibiotics, infection, sorbitol-containing liquids, laxatives, rate, contamination and underlying bowel disease.
Key red flags
Acute cough, cyanosis, desaturation or respiratory distress during tube use requires immediate cessation, airway assessment and confirmation that feeding access has not entered or migrated toward the airway.
A newly inserted nasogastric tube without an endorsed pH result or documented acceptable X-ray must not be used for feed, water or medication.
Severe abdominal pain, rigidity, rapid distension, haemodynamic instability or free-air concern suggests perforation, ischaemia or obstruction and requires urgent surgical assessment.
Pain on gastrostomy use, new leakage, inability to rotate when appropriate, bleeding or systemic infection can indicate a serious device complication needing prompt specialist review.
Weakness, arrhythmia, oedema, delirium or respiratory deterioration after feeding starts may represent refeeding syndrome and warrants urgent electrolyte and fluid evaluation.
Investigation priorities
Provide the first-line endorsed initial placement check when aspirate is obtainable.
Management branches
Oral intake is unsafe or insufficient and enteral feeding offers a proportionate benefit.
- Confirm indication, expected duration, gastrointestinal function, refeeding risk, capacity and the agreed goals of treatment.
- Choose gastric or post-pyloric access with the nutrition, endoscopy, radiology or surgical team according to anatomy and aspiration factors.
- Verify position using the device-specific approved method and document authorisation before the first feed, flush or medicine.
- Begin the prescribed regimen at an appropriate rate, adding water and electrolyte plans and monitoring tolerance against explicit targets.