Enteral Feeding Nursing Care
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Direct answer
"When the gut works, use it" is the rule that governs enteral feeding: nutrition is delivered into the stomach or jejunum through a nasogastric, nasojejunal, PEG or PEJ tube whenever swallowing is unsafe or intake insufficient, because enteral feeding preserves gut integrity, costs less and carries fewer complications than the parenteral route. Three nursing pillars hold the practice up: confirm tube position before every feed (gastric aspirate pH of 5.5 or less; radiography whenever doubt exists), sit the patient at 30-45 degrees during and after feeds to prevent aspiration, and run the ordered mode — continuous, intermittent or bolus — with water flushes between. Most complications are preventable with technique: diarrhoea (the commonest), tube blockage, aspiration, hyperglycaemia and refeeding syndrome in the malnourished.
What you must remember
- Routes by duration and risk: nasogastric for short-term gastric feeding; post-pyloric nasojejunal for aspiration risk or gastric paresis; PEG or PEJ when feeding will last beyond about four weeks.
- Placement verification: aspirate pH of 5.5 or less on indicator paper confirms gastric position (interpret cautiously on acid-suppressing drugs); X-ray is the gold standard after difficult insertion or for small-bore tubes; auscultation of insufflated air alone is unreliable.
- Aspiration prevention: head of bed 30-45 degrees during feeding and for 30-60 minutes afterwards; verify tube position and residual volume per policy before intermittent feeds.
- Flush discipline: at least 30 mL of water before, between and after feeds and medications — patency plus free-water provision.
- Medication rules: liquid formulations preferred; never crush enteric-coated or sustained-release drugs; give each drug separately with flushes between; never mix medications into the feed.
- Blocked tube: prevent with flushes; clear with warm-water flushes using a gentle push-pull technique — acidic juice "remedies" are discouraged.
- Complication map: diarrhoea commonest; then nausea and bloating, aspiration, tube displacement, hyperglycaemia, and refeeding syndrome — start feeds slowly in the malnourished with potassium, magnesium and phosphate monitored and thiamine given.
- Hang time and hygiene: open feeding systems are discarded within 4-8 hours, closed ready-to-hang systems per manufacturer commonly up to 24 hours; wash hands and clean the opening port before every connection.
A safe nasogastric feed, step by step
A 68-year-old with post-stroke dysphagia has a fine-bore nasogastric tube and an order for intermittent feeds. Walk it through: verify the order and formula; perform hand hygiene and collect the syringe and pH paper; sit the patient up at 30-45 degrees or higher. Confirm placement — aspirate gently and test the strip: pH 5.5 or less proceeds, no aspirate or a higher reading means stop and re-verify, with X-ray if still unsure. Check the residual volume per unit policy — a large residual prompts review and slower feeding rather than automatic cessation. Flush with 30 mL water, run the feed over 30-60 minutes by gravity or pump, keep the head elevated for an hour afterwards, and document the pH result, volume, tolerance and intake. Between feeds, teach the family three things: upright always, mouth care even though nothing is eaten, and never to advance the rate or dilute the formula themselves.
Where students slip
The wrong answers that persist: trusting the whoosh of auscultated air for placement (it is transmitted even from bronchial placements — never sole confirmation); crushing sustained-release tablets down the tube; and quoting the old ritual residuals — a fixed number like 100-150 mL above which feeds stop — when current practice treats residuals as unreliable and unit policy governs. The subtle fourth: a patient kept nil by mouth for swallowing assessment still gets full oral hygiene, because colonised saliva is what pneumonias feed on.
Frequently asked questions
How is nasogastric tube position confirmed before feeding?
Gastric aspirate pH of 5.5 or less on indicator paper, with chest radiography as the gold standard — auscultation of air alone is never sufficient.
What head elevation is required for enteral feeds?
Thirty to forty-five degrees during feeding and for at least 30 minutes afterwards, to prevent reflux and aspiration.
Can sustained-release tablets be crushed for tube feeding?
Never — crushing enteric-coated or sustained-release formulations causes dose dumping; liquid alternatives are requested from the prescriber.
What is the commonest complication of enteral feeding?
Diarrhoea — usually from too-fast infusion, contamination or medications rather than the formula itself.
What is refeeding syndrome and who is at risk?
Potentially fatal shifts of phosphate, potassium and magnesium when feeding restarts in the starved; feeds begin slowly with electrolyte monitoring and thiamine.