Gastrostomy (PEG) tube managment

🚨 Gastrostomy tube problems can be an emergency. Patients who rely on a gastrostomy tube for nutrition, hydration or medication must be assessed urgently if the tube blocks, leaks, becomes painful or falls out. Immediate supportive care, fluids, nutrition planning and alternative medication routes should be provided while definitive gastrostomy access is restored.

ℹ️ About Gastrostomy Tubes

• 🍽️ PEG - Percutaneous Endoscopic Gastrostomy - and RIG - Radiology-Inserted Gastrostomy - are used for patients needing long-term enteral feeding, hydration or medication administration.
• 🧠 They are commonly used in patients with neurological conditions such as stroke, traumatic brain injury, cerebral palsy, motor neurone disease or severe swallowing impairment.
• 🌀 A PEJ - Percutaneous Endoscopic Jejunostomy - is a narrow extension tube passed through the PEG into the jejunum.
• ⚠️ PEJ tubes are narrower and can block more easily, so they may need specialist replacement.

⚠️ Common Gastrostomy Tube Problems

• 🚫 Blocked tube
• 📤 Tube dislodgement or falling out
• 💧 Split or leaking tube
• 😖 Pain during flushing, feeding or medication administration
• 🔒 Tube stuck within the gastrostomy tract
• 🔥 Redness, discharge or infection around the stoma site

🚫 Blocked Tube

• Blocked tubes are common and may occur due to:
  • 🥣 Thick feeds
  • 💊 Poorly prepared or crushed medication
  • 🚰 Inadequate flushing
  • 📏 Narrow tube calibre, especially PEJ tubes
• 🧼 Prevention is better than rescue:
  • 💊 Crush and dissolve medicines fully in water where appropriate.
  • 🚰 Flush with 30–60 mL water after medication and at regular intervals.
  • ⏰ Flush at least every 4 hours during continuous feeding, according to local policy.
  • ❌ Avoid saline, as it may crystallise and worsen blockage.

🛠️ How to Try to Unblock the Tube

• 🚰 Use warm water from a running tap to gently flush the tube.
• ❌ Do not use Coca-Cola, fizzy drinks, saline or acidic fluids.
• 💉 Use an appropriate purple enteral/gastrostomy syringe, usually 10 mL, 20 mL or 50 mL.
• ⚠️ Avoid standard IV syringes with Luer-lock or slip tips, as these create wrong-route medication risks.
• 🔄 Try gentle push-pull aspiration to loosen debris - do not use excessive force.
• 🧪 If successful, confirm tube position where needed by aspirating gastric contents and checking pH.
• ✅ A gastric aspirate pH of ≤5.5 supports correct gastric placement.

🚨 If the Tube Remains Blocked

• 🚑 If the patient is fully dependent on the gastrostomy tube, treat as an emergency.
• 📞 Contact the gastroenterology registrar, nutrition team or local gastrostomy service urgently.
• 💧 Establish IV access and give IV fluids if hydration is at risk.
• 💊 Prescribe essential medications by an alternative route, such as IV, subcutaneous, transdermal, rectal or oral if safe.
• 🥣 If prolonged delay is expected, consider alternative feeding access such as NG feeding, with senior/dietetic input.
• 👩‍⚕️ Involve a dietitian early if nutrition or feed prescription is affected.

📤 Dislodged Tube

• 🚨 A recently placed gastrostomy tube falling out can be a surgical or gastroenterology emergency.
• ⏳ The tract may close quickly, especially if the tube is new.
• ❌ Do not blindly reinsert a tube if the tract is immature or there is uncertainty.
• 📞 Seek urgent specialist advice from gastroenterology, interventional radiology or surgery.
• ⚠️ Feeding into a misplaced tube can cause peritonitis.

🔥 Site Infection

• Stoma infection may occur, especially with poor hygiene, leakage, skin breakdown or an overly tight external flange.
• Look for:
  • 🔴 Redness or spreading cellulitis
  • 💧 Purulent discharge
  • 😖 Increasing pain
  • 🌡️ Fever or systemic upset
  • 👃 Offensive smell from the site
• 🧫 Take a swab if there is discharge.
• 💊 Treat confirmed or clinically significant infection with antibiotics according to local guidance.
• 🧼 Optimise stoma hygiene and check that the external flange is not too tight.

⚠️ Serious Complications

• 🚨 Suspect complications if there is severe pain, abdominal distension, fever, sepsis, vomiting, leakage into the abdomen or pain during feeding.
• Investigations may include:
  • 🖥️ CT abdomen
  • 🧪 Contrast study through the gastrostomy tube to assess position, leak or blockage
  • 🔪 Urgent surgical review if perforation, peritonitis or intra-abdominal leak is suspected

🧠 Exam Pearl

• 💡 Blocked tube: try warm water and gentle push-pull technique.
• 💡 Dependent patient: treat as an emergency if feeding or medication cannot be given.
• 💡 Newly dislodged tube: do not blindly replace - seek urgent specialist help.
• 💡 Pain on feeding: stop feeding and check position/complications.

📚 References

• 📄 Gastrostomy ('PEG') Tubes and the ED