Procedure is the same for nasogastric and orogastric tubes. As nasogastric tubes (NGT) are more commonly used in babies, the term nasogastric will be used throughout this guideline
INDICATIONS
- Contraindications to oral feeding, or baby unable to take full requirements orally
- Nasogastric or orogastric tube in place
EQUIPMENT
- Enteral syringes (see https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiv9OmUjpv4AhVFkFwKHTs-C68QFnoECAsQAQ&url=http%3A%2F%2Fwww.premiersafetyinstitute.org%2Fwp-content%2Fuploads%2FOral-medicines-alert.pdf&usg=AOvVaw3PSI2MSRu2c0MpD7lx8Z)
- pH testing strips
- Gravity/bolus feeding set
- Feed/fluids/medication according to prescription
- Prescription chart (for medication)
PROCEDURE
Preparation
- See (see Nasogastric tube insertion guideline)
- Discuss procedure with parents/carer
- Wash hands and prepare equipment
- Bring milk to room temperature by removing from fridge and warming in a waterless warmer or in hot water. Never deliver fridge-cold milk directly via nasogastric or orogastric tube (see Nutrition and enteral feeding guideline)
Position of baby for feeding
- Baby need not be lying down. It is preferable to feed baby whilst receiving kangaroo care
- An awake and stable baby can be held for tube feed
- preferably skin-to-skin with parents holding baby in an upright position
- baby can also be placed in elevated side lying feeding position (ESLP) if skin-to-skin not possible at time of feed
- If lying flat in a cot:
- elevate mattress to 30° before feeding and return to flat position within 1 hr
Checking pH
- Check pH before every feed/use of tube according to NPSA guidelines (see Nasogastric tube insertion guideline)
- if pH 0–5.5, commence feed and document pH
- if pH 5.0–5.5 confirm pH interpretation with a second person before commencing feed
- if pH ≥6, do not commence feed. Repeat aspiration and retest
- If repeated test ≥6, seek advice from senior clinician and undertake risk assessment following NPSA algorithm (see Nasogastric tube insertion guideline). Document decision made and rationale
- If no aspirate obtained, do not feed. Follow procedure outlined in NPSA guideline
Feeding
- Avoid rigid feeding patterns (e.g. 1 bottle/2 tube, alternate bottle/tube etc.) (see Bottle feeding guideline)
- When handling tubes, ensure clean technique. Pay careful attention to feed preparation and administration
- Administer feed by gravity
- Remove plunger, connect to tube, pour small volume of feed into barrel, raise level of barrel above baby’s stomach. Control speed of administration by raising or lowering barrel
- Do not plunge feed
- Ensure tube feed takes approximately the same time as a suckling feed e.g.:
- 20 min for 3-hrly full feed volume requirement
- 10 min for 50% volume
- 5 min for 25% volume
Monitoring
- Observe baby throughout feed for signs of deterioration or distress (change in colour, cyanosis, apnoea, bradycardia, vomiting, straining, squirming, grimacing and other avoidance behaviour)
- Observe for abdominal distension following a feed
- If appropriate developmental stage/capabilities, offer small drops of milk to mouth to taste, but avoid in babies with no swallow mechanism
- Consider offering baby mother’s breast for nuzzling or non-nutritive sucking during tube feed [see Non-nutritive sucking (NNS) guideline]
- On completion of feed, instil small amount of air into tube (0.5–1 mL)
DOCUMENTATION
- Document feed details:
- pH of aspirate
- type of feed
- volume of feed
- time of feed
- behaviour/response during feed
- adverse reactions (vomiting etc.)
- Ensure feed chart is signed
FURTHER MANAGEMENT
- For administration of medication, remember to check baby identity and prescription. Follow Trust policy for administration of medicines and British Association of Parenteral and Enteral Nutrition (BAPEN) guidance
- document administration of medication on prescription chart
- Flushing of NGT is not routine in preterm babies. To avoid medication remaining in NGT try to give medications pre-feed. Where this is not possible 1 mL of feed can be used to flush tube after inserting medication
FURTHER INFORMATION
- Nasogastric tube insertion guideline
Date updated: 2024-02-05